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Data Sheet INTEGRATED CIRCUIT 2002 Nov 08
OM5428
General purpose triggering circuit
INTEGRATED ELECTRONIC SOLUTIONS 1BUTLER DRIVE HENDON SA 5014 AUSTRALIA
Integrated Electronic Solutions, Hendon, South Australia
Data Sheet
General purpose triggering circuit
CONTENTS 1 2 3 4 5 5.1 5.2 6 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 8 9 10 11 12 13 13.1 13.2 13.2.1 13.2.2 13.3 13.3.1 13.3.2 13.3.3 14 15 16 FEATURES GENERAL DESCRIPTION QUICK REFERENCE DATA ORDERING INFORMATION PINNING INFORMATION Pinning layout Pin description BLOCK DIAGRAM FUNCTIONAL DESCRIPTION Supply Reset Gate sense Zero-crossing detector Difference amplifier Sawtooth generator Output stage LIMITING VALUES CHARACTERISTICS IMPORTANT: ELECTRICAL SAFETY WARNING APPLICATION INFORMATION PACKAGE OUTLINES SOLDERING Introduction DIP Soldering by dipping or by wave Repairing soldered joints SO Reflow soldering Wave soldering Repairing soldered joints DEFINITIONS IES INFORMATION DISCLAIMER(1)
OM5428
(1) The contents of this document are subject to the disclaimer on page 16
2002 Nov 08
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Integrated Electronic Solutions, Hendon, South Australia
Data Sheet
General purpose triggering circuit
1 FEATURES 2 GENERAL DESCRIPTION
OM5428
* Adjustable proportional range * Adjustable hysteresis * Adjustable firing burst repetition time * Adjustable pulse width * Supplied from the mains * Provides supply for external temperature bridge * Low supply current, low dissipation
The OM5428 is a bipolar integrated circuit delivering negative pulses for triggering a triac. The flexibility of the circuit makes it suitable for a variety of applications, such as: * Synchronous on/off switching * Phase control * Time-proportional control * Temperature control * Motor speed control
3 QUICK REFERENCE DATA Tamb = 25C SYMBOL -VEE -IEE ITRIG tw Ptot Tamb PARAMETER DC supply voltage supply current output current zero crossing pulse width sawtooth pulse width total power dissipation operating ambient temperature range CONDITIONS derived from mains voltage - quiescent current set via gate resistor (Rg) Rz = 500KRC (R = 300KW; C = 5nF) maximum - - - - - 0 MIN TYP 14 200 - 100 100 - - - - 80 - - 300 +125 MAX V A mA s s mW C UNIT
4
ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DIP16 SO16 DESCRIPTION plastic dual in-line package; 16 leads (300 mil) plastic small outline package; 16 leads; body width 3.9 mm 3 VERSION SOT38-1 SOT109-1
OM5428 P OM5428 T 2002 Nov 08
Integrated Electronic Solutions, Hendon, South Australia
Data Sheet
General purpose triggering circuit
5 5.1 PINNING INFORMATION Pinning layout 5.2 Pin description PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
OM5428
SYMBOL PW
PW XOUT 1 16 XDIS
DESCRIPTION pulse width control input zero-crossing detector output difference amplifier enable output comparator non-inverting output comparator non-inverting input comparator inverting input comparator inverting output triac gate sense disable input output stage input output stage output negative supply positive supply external power resistor sawtooth generator trigger input sawtooth generator output zero crossing detector disable input
XOUT DIFFEN QC+ IC+ IC- QC-
2
15
FLY
DIFFEN
3
14 SAW
QC+ IC+
4
13
RMNS
OM5428
5 12 VCC
SDIS AMPIN TRIG VEE VCC RMNS SAW FLY XDIS
IC-
6
11
VEE TRIG AMPIN
QC-
7
10
SDIS
8
9
Fig.1 Pin configuration
6
BLOCK DIAGRAM
external mains resistor (Rs) RMNS 13 negative supply VEE 11 vcc
supply common VCC 12
SUPPLY
REGULATOR
ready from regulator
RESET
output amplifier reset
10 TRIG OUTPUT AMPLIFIER
output stage output
9 AMPIN output stage input
OM5428
pull up on pin IC+
pull up on pin SAW pull down on pin ICSAWTOOTH GENERATOR 7 QC14 SAW sawtooth generator input
output amplifier inhibit
gate sense
pulse width (Rz) PW 1 control input XDIS 16 enable input
ZEROCROSSING DETECTOR 2 XOUT 4 3 DIFFEN QC+ external resistor zero-crossing detector output
DIFFERENCE AMPLIFIER 5 IC+ 6 IC-
GATE SENSE
8 SDIS
gate sense inhibiting input
15 FLY
comparator noninverting input
comparator inverting output
comparator noninverting output
comparator inverting input
sawtooth generator output
Fig.2 Block diagram of the OM5428
2002 Nov 08
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Integrated Electronic Solutions, Hendon, South Australia
Data Sheet
General purpose triggering circuit
7 FUNCTIONAL DESCRIPTION by recharging the smoothing capacitor C1 on the mains negative half cycles. Any excess current is bypassed through the shunt transistor of the regulator. The maximum rated current must not be exceeded. During the positive half of the mains cycle the external smoothing capacitor C1 supplies the circuit. Its capacitance must be large enough to maintain the supply voltage above the minimum specified limit. A suitable VDR may be connected across the mains to provide protection for the OM5428 and the triac against mains-born transients. 7.2 Reset
OM5428
that coincide with the zero crossings of the mains voltage to minimise RF interference and transients on the mains supply. If the load to be driven is purely resistive, the synchronization voltage is obtained direct from the mains via a resistor. As a result trigger pulses start shortly before, and end shortly after, each zero-crossing of the mains voltage. In this manner radio interference is reduced to a minimum. If the load contains an inductive component, the synchronization will be produced by the internal gate sense circuit rather than the zero-crossing detector. The trigger pulse is then produced at the earliest possible moment, i.e. immediately following zero-crossing of the phase-shifted load current. During phase control the zerocrossing detector is used to generate a sawtooth voltage synchronous with the mains. As soon as the d.c. control voltage corresponding to a preset trigger angle is exceeded the output is pulsed. The pulse width control input PW (pin 1) allows adjustment of the pulse width at output XOUT (pin 2), to the value required for the triac. This is done by choosing the value of external synchronization resistor Rz between PW and the AC mains. The pulse width is determined by the amount of current flowing to or from pin PW. Any current exceeding 9uA will result in the output of the zero-crossing detector being disabled. The zero-crossing detector output is also inhibited when the XDIS input (pin 16) is HIGH, and enabled when LOW, e.g. connected to VEE. The pulse width can be determined using the following formula:
o / / /o oo
Fig.2 shows the functional block diagram of the OM5428. It comprises the following sections: * d.c. supply derived from the mains via a dropping resistor (Rs); * reset to ensure correct startup; * gate sense for reduction in the number of pulses produced when firing the triac; * zero-crossing detector for synchronization of the trigger pulses; * difference amplifier passing a signal from a sensor, or indication of a potentiometer setting or switch position, etc.; * ramp function generator operating as the sawtooth oscillator in time proportional or phase control; * output amplifier amplifying trigger pulses and driving the triac gate. 7.1 Supply
A reset circuit providing four reset functions throughout the OM5428 has been included. Initially the reset signal ensures that trigger pulses are not produced until VEE has reached its minimum value and C1 is fully charged. The input SAW (pin14) to the sawtooth generator is also held at a low state until the reset threshold has been reached. During start-up the reset is also responsible for holding the input pins to the difference amplifier, IC+ (pin 5) at a high state and IC- (pin 6) at a low state. As a result, functions such as soft and hard start while phase firing can be realised. 7.3 Gate sense
The OM5428 has been designed so that it is supplied directly from mains voltage. For this purpose a regulator circuit is included to limit the DC supply voltage. An external resistor Rs (mains voltage rated) is connected between the mains active and pin RMNS; VCC is connected to the neutral line. A smoothing capacitor C1 is connected between VCC and VEE. The circuit produces a negative supply voltage at VEE, which may be used to supply an external circuit such as a temperature sensing bridge. During the negative half of mains, current through the external voltage dropping resistor Rs charges the external smoothing capacitor C1 to the shunt voltage of the regulator. The value of Rs should be chosen such that it can supply the current for the OM5428, plus the charge required to drive the triac gate and any external (peripheral) circuits connected to VEE 2002 Nov 08
Included in the OM5428 is a function that is capable of determining the state of the triac. Used to inhibit the output amplifier, the gate sense circuit ensures that multiple gate pulses are not produced, hence reducing overall current consumption. 7.4 Zero-crossing detector
The OM5428 contains a zerocrossing detector to produce pulses 5
( 9 x10 Rz ) asin ----------------------------------- rad Vmains ( pk ) P W = 2 -------------------------------------------------------------100
e ae e c c c ae
-6
s
Integrated Electronic Solutions, Hendon, South Australia
Data Sheet
General purpose triggering circuit
Output XOUT, which produces negative-going output pulses, is an n-p-n open-collector output that for some applications may require an external pull-up resistor connected to VCC. 7.5 Difference amplifier current drawn from pin 3 determines the drive for the comparator outputs. 7.6 Sawtooth generator 7.7 Output stage
OM5428
IC+ and IC- (pins 5 and 6) are differential inputs of the comparator or differential amplifier, with QC+ and QC- (pins 4 and 7) as complementary outputs. QC+ and QC- are n-p-n open collector outputs requiring external collector resistors to VCC. QC+ will be HIGH and QC- will be LOW when IC+ is higher than IC-. IC+ and IC- are both the base drive of separate p-n-p transistors. In order for correct operation of the comparator, the input voltage on these pins should be set up such that current is able to be drawn from them. Such arrangements may involve a pot controlled voltage divider. The comparator contains a current mirror source that is activated by a current out of DIFFEN (pin 3). The
The sawtooth generator may be used to produce bursts of trigger pulses, with the net effect that the load is periodically switched on and off. The firing burst repetition time is usually determined by an external resistor and capacitor connected to the sawtooth generator trigger input SAW (pin 14). The repetition time is approximately 0.4 x RC. With a time-proportional switch, the ramp voltage produced by the sawtooth generator serves to provide the repetition frequency of load switching that can be adjusted with the control voltage. In phase control, the flyback of the sawtooth is used as the drive signal for generating the trigger pulse. The output FLY (pin 15) is an n-p-n open-collector output. During the flyback period of the sawtooth pulse the transistor is ON and is capable of sinking current.
The output stage is driven via an internal pull-up and therefore may be inhibited by drawing current from input AMPIN (pin 9). The output has been designed to produce negative going pulses with respect to mains neutral. This allows a triac to be fired in its more sensitive regions, reducing the amount of gate current needed to latch the triac and hence reducing the overall current consumption. The output TRIG (pin 10) is an n-p-n open-collector output capable of sinking current i.e. conventional current flow into the circuit. A gate resistor Rg should be connected between the output TRIG and the triac gate to limit the output current to the minimum required by the triac. By doing this, the total supply current and the power dissipation of the IC are minimised. Output TRIG is protected with a diode to VEE (pin 11) against damage by undershoot of the output voltage, e.g. caused by an inductive load.
8 LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). All voltages specified with respect to VCC, Common. SYMBOL -VEE VI VI II IRMNS(AV) IRMNS(RM) ITRIG Ptot Tstg Tamb 2002 Nov 08 supply voltage supply current input voltage, all inputs excluding pins RMNS and PW input voltage, pins RMNS and PW input current, all inputs excluding pin RMNS and TRIG rectified average repetitive peak output current total power dissipation storage temperature operating ambient temperature 6 t < 300 s I < 15mA I < 15mA PARAMETER CONDITIONS - - VEE - 0.5 VEE - 18 -1 - - - - -40 0 MIN. 18 15 VEE + 18 VEE + 18 1 15 50 300 300 +150 +125 MAX. UNIT V mA V V mA mA mA mA mW C C
Integrated Electronic Solutions, Hendon, South Australia
Data Sheet
General purpose triggering circuit
9 CHARACTERISTICS At Tamb = 25C; Voltages are specified with respect to VCC, Common. SYMBOL Power Supply -VEE -IEE VPW IPW(Peak) tw VXDIS IXDIS VXOUT IXOUT VID IIC+ IIC- VQC IQC IDIFFEN VSAW(H) VSAW(L) ISAW(L) IFLY ISDIS VAMPIN IAMPIN VTRIG ITRIG 2002 Nov 08 supply voltage (operating) quiescent current ICC = 1 mA All function pins open cct IPW = 100 A IPW = -100 A peak value 13.4 - - -1.2 - 14.0 200 - - - 100 PARAMETER CONDITIONS MIN TYP
OM5428
MAX
UNIT
14.6 300
V A V V mA s V A V mA V A A V mA A V V A A A V A V mA
Pulse width control input PW (pin 1) input voltage input current pulse width 1.2 - 1 - - 30 - 40 7 -10 -10 - - - - - 60
V = 230Vac, Rz = 500K - inhibit
Zero-crossing detector disable input XDIS (pin 16) input voltage input current VEE + VBE - - -
Zero-crossing detector output XOUT (pin 2) output voltage (pull-down) max pull down current differential input voltage input bias current input bias current output voltage output current (pull-down) enable current (pull-down) vIC+ > vIC- + 1V vIC- > vIC+ + 1V IDIFFEN = 15 A IDIFFEN = 15 A VEE + VBE - - - - - VEE - - - - - - 3.0 - 3 - - - - - 1 15 -9.0 -12.8 50
Comparator input IC+ and IC- (pins 5 and 6)
Comparator outputs QC+ and QC- (pins 4 and 7)
Comparator enable DIFFEN (pin 3) Sawtooth generator trigger input SAW (pin 14) input trigger voltage HIGH input trigger voltage LOW max pull-down @ low voltage
Sawtooth generator output FLY (pin 15) output current (pull-down) 150 225 - - - - 80
Gate sense inhibiting input SDIS (pin 8) input current (pull-up) 6.0
Output stage input AMPIN (pin 9) output drive disable (internal pull-up) output drive enable (pull-down) AMPIN pin open cct VAMPIN = VEE VEE + 2VBE - - -
Output stage output TRIG (pin 10) output voltage output current (pull-down) VEE = -14V, VAMPIN = VEE VEE Vsat < 1V 7 -
Integrated Electronic Solutions, Hendon, South Australia
Data Sheet
General purpose triggering circuit
10 IMPORTANT: ELECTRICAL SAFETY WARNING OM5428 circuit is connected to the mains electrical supply and operates at voltages which need to be protected by proper enclosure and protective covering. Application circuits for OM5428 should be designed to conform to relevant standards (such as IEC 65, or Australian Standards AS3100, AS3250 and AS3300), it should only be used in a manner that ensures the appliance in which they are used complies with all relevant national safety and other Standards. It is recommended that a printed circuit board using this integrated circuit be mounted with non-conductive clips, and positioned such that the minimum creepage distances from the assembly to accessible metal parts, and between high voltage points cannot be transgressed.
OM5428
It should be noted that as there are Mains Voltages on the circuit board adequate labelling should be attached to warn service personnel, and others, that this danger exists. A control board assembly should be mounted, preferably vertically, with sufficient free air flow across its surface to prevent the heat dissipated in various components from causing an unacceptable rise in the ambient temperature. The triac also needs to have an adequate heatsink, as exceeding its rated maximum junction temperature can result in loss of control, unpredictable behaviour, and possible dangerous conditions. The board should be mounted in a place that is clean and dry at all times, not subject to condensation or the accumulation of dust and other contaminants.
11 APPLICATION INFORMATION The reliability of modern triacs has given a strong impetus to the introduction of electronic power control in industrial as well as non-industrial areas. Because of the low cost of these devices and simplification in trigger circuitry, electronic power control now enjoys a host of applications such as electronic household cookers, panel radiators, fans, hobby tools, and even vacuum cleaners. The general purpose trigger circuit OM5428, referred to as a trigger module, supplies the pulses for gate triggering triacs. This module is connected to the mains via a dropping resistor hence removing the need for an expensive external supply. The OM5428 is an inexpensive, versatile trigger module and, being a monolithic IC in 16-pin dual in-line package, it takes up hardly any space at all. It is ideally suited for applications such as:
1. On/off control: static switch. On/off control is a method of power control where triggering should preferably occur symmetrically with respect to the zero crossing of the triac current to avoid RF interference. That is, triggering must start before the current has dropped to the holding value, and must continue until the current has risen again above the latching level. Under these conditions radio interference is kept at a minimum. 2. Time proportional control: temperature and motor speed control. Time proportional control is on/off control with a fixed repetition rate of load switching. The system is called time proportional because the power in the load averaged over the repetition period is varied. This system provides more accurate temperature control, avoiding the overshoot which is inherent in on/off control. Triggering conditions are the same as for on/off control.
3. Phase control: single phase control (full cycle). Phase control is stepless control of output power by varying the conduction angle of the triac, 180 degree conduction corresponding to full output power. Step changes in triac voltage and current during turn-on give rise to RF interference. Appropriate RF interference suppression methods need to be applied for all phase triggered loads. It should be noted that phase control is not permitted for heating purposes.
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2002 Nov 08
Active 230 Vac Rz 500K VR25 Rs 100K VR37 LOAD T1 Triac Neutral R1 1M PW XOUT C1 220F 16V DIFFEN R2 500K QC+ IC+ R3 500K ICQCSDIS 1 2 3 4 5 6 7 8 16 15 14 13 XDIS FLY SAW RMNS VCC VEE TRIG AMPIN Rg 250
Integrated Electronic Solutions, Hendon, South Australia
General purpose triggering circuit
9
OM5428
12 11 10 9
Vcontrol = 0-10V
OM5428
Fig.3 Typical application of the OM5428 as a static switch for resistive loads. The arrangement gives triggering around the zero crossings of the mains voltage. The values shown for Rs, Rg, Rz and C1 give a gate current IGT = 50 mA typical at VGT = 1.5 V and a trigger pulse duration tw = 100 s typical.
Data Sheet
2002 Nov 08 10
Integrated Electronic Solutions, Hendon, South Australia
General purpose triggering circuit
Active
230 Vac
Rz 500K VR25
Rs 100K VR37
LOAD
T1 Triac
Neutral R1 1M R2 168K 1 2 3 4 5 6 7 8 16 15 14 13 R3 750K Rg 250
PW XOUT C1 220F 16V R4 1M DIFFEN QC+ IC+ VR1 50K lin ICQCSDIS
XDIS FLY SAW RMNS VCC VEE TRIG AMPIN
OM5428
12 11 10 9
NTC 100K
C2 100F 16V
Fig.4 Typical application of the OM5428 as a time proportional temperature controller. The arrangement gives triggering around the zero crossings of the mains voltage as long as the voltage produced by the temperature bridge connected to IC+ (pin 5) is higher than the voltage on IC- (pin 6). The voltage on IC- is a sawtooth with a repetition time of approximately 30 s; this time is determined by the RC network formed by R3 and C2. The values shown for Rs, Rg, Rz and C1 give a gate current IGT = 50 mA typical at VGT = 1.5 V and a trigger pulse duration tw = 100 s typical.
OM5428
Data Sheet
2002 Nov 08
Active 230 Vac Rz 500K VR25 Rs 100K VR37 LOAD T1 Triac Neutral R1 1M 1 2 3 4 5 6 7 8 16 15 14 13 R2 300K Rg 250 PW XOUT C1 220F 16V R3 1M DIFFEN QC+ IC+ ICQCSDIS C2 5nF XDIS FLY SAW RMNS VCC VEE TRIG AMPIN
Integrated Electronic Solutions, Hendon, South Australia
General purpose triggering circuit
11
OM5428
12 11 10 9
C3 5nF
Vcontrol
OM5428
Fig.5 Typical application of the OM5428 as a single-phase control circuit. The circuit produces a trigger pulse at the gate of the triac. The pulse is produced when the voltage on pin IC- (related to mains zero crossing) becomes greater than the control voltage. The arrangement forms a full-wave AC controller.
Data Sheet
Integrated Electronic Solutions, Hendon, South Australia
Data Sheet
General purpose triggering circuit
12 PACKAGE OUTLINES
OM5428
DIP16: plastic dual in-line package; 16 leads (300 mil); long body
SOT38-1
D
ME
seating plane
A2
A
L
A1
c Z e b1 b 16 9 MH wM (e 1)
pin 1 index E
1
8
0
5 scale
10 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches A max. 4.7 0.19 A1 min. 0.51 0.020 A2 max. 3.7 0.15 b 1.40 1.14 0.055 0.045 b1 0.53 0.38 0.021 0.015 c 0.32 0.23 0.013 0.009 D (1) 21.8 21.4 0.86 0.84 E (1) 6.48 6.20 0.26 0.24 e 2.54 0.10 e1 7.62 0.30 L 3.9 3.4 0.15 0.13 ME 8.25 7.80 0.32 0.31 MH 9.5 8.3 0.37 0.33 w 0.254 0.01 Z (1) max. 2.2 0.087
Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT38-1 REFERENCES IEC 050G09 JEDEC MO-001AE EIAJ EUROPEAN PROJECTION
ISSUE DATE 92-10-02 95-01-19
2002 Nov 08
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Integrated Electronic Solutions, Hendon, South Australia
Data Sheet
General purpose triggering circuit
OM5428
SO16: plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
D
E
A X
c y HE vMA
Z
16 9
Q A2 pin 1 index Lp
1 8
A1
(A 3)
A
L wM detail X
e
bp
0
2.5 scale
5 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches A max. 1.75 0.069 A1 0.25 0.10 A2 1.45 1.25 A3 0.25 0.01 bp 0.49 0.36 c 0.25 0.19 D (1) 10.0 9.8 E (1) 4.0 3.8 0.16 0.15 e 1.27 0.050 HE 6.2 5.8 L 1.05 Lp 1.0 0.4 0.039 0.016 Q 0.7 0.6 0.028 0.020 v 0.25 0.01 w 0.25 0.01 y 0.1 0.004 Z (1) 0.7 0.3 0.028 0.012
0.010 0.057 0.004 0.049
0.019 0.0100 0.39 0.014 0.0075 0.38
0.244 0.041 0.228
8 0o
o
Note 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. OUTLINE VERSION SOT109-1 REFERENCES IEC 076E07S JEDEC MS-012AC EIAJ EUROPEAN PROJECTION
ISSUE DATE 95-01-23 97-05-22
2002 Nov 08
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Integrated Electronic Solutions, Hendon, South Australia
Data Sheet
General purpose triggering circuit
13 SOLDERING 13.1 Introduction 300 and 400 C, contact may be up to 5 seconds. 13.3 13.3.1 SO REFLOW
SOLDERING
OM5428
dispensing. The package can be soldered after the adhesive is cured. Maximum permissible solder temperature is 260 C, and maximum duration of package immersion in solder is 10 seconds, if cooled to less than 150 C within 6 seconds. Typical dwell time is 4 seconds at 250 C. A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. 13.3.3 REPAIRING
SOLDERED JOINTS
There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used. This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our "IC Package Data book" (order code 9398 652 90011). 13.2 13.2.1 DIP SOLDERING BY DIPPING OR BY
WAVE
Reflow soldering techniques are suitable for all SO packages. Reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. Several techniques exist for reflowing; for example, thermal conduction by heated belt. Dwell times vary between 50 and 300 seconds depending on heating method. Typical reflow temperatures range from 215 to 250 C. Preheating is necessary to dry the paste and evaporate the binding agent. Preheating duration: 45 minutes at 45 C. 13.3.2 WAVE SOLDERING
Fix the component by first soldering two diagonally- opposite end leads. Use only a low voltage soldering iron (less than 24 V) applied to the flat part of the lead. Contact time must be limited to 10 seconds at up to 300 C. When using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 C.
The maximum permissible temperature of the solder is 260 C; solder at this temperature must not be in contact with the joint for more than 5 seconds. The total contact time of successive solder waves must not exceed 5 seconds. The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (Tstg max). If the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit. 13.2.2 REPAIRING
SOLDERED JOINTS
Wave soldering techniques can be used for all SO packages if the following conditions are observed: * A double-wave (a turbulent wave with high upward pressure followed by a smooth laminar wave) soldering technique should be used. * The longitudinal axis of the package footprint must be parallel to the solder flow. * The package footprint must incorporate solder thieves at the downstream end. During placement and before soldering, the package must be fixed with a droplet of adhesive. The adhesive can be applied by screen printing, pin transfer or syringe
Apply a low voltage soldering iron (less than 24 V) to the lead(s) of the package, below the seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is less than 300 C it may remain in contact for up to 10 seconds. If the bit temperature is between 2002 Nov 08
14
Integrated Electronic Solutions, Hendon, South Australia
Data Sheet
General purpose triggering circuit
14 DEFINITIONS Data sheet status Engineering sample information Objective specification
OM5428
This contains draft information describing an engineering sample provided to demonstrate possible function and feasibility.Engineering samples have no guarantee that they will perform as described in all details. This data sheet contains target or goal specifications for product development. Engineering samples have no guarantee that they will function as described in all details. This data sheet contains preliminary data; supplementary data may be published later. Products to this data may not yet have been fully tested, and their performance fully documented. This data sheet contains final product specifications.
Preliminary specification
Product specification Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. 15 IES INFORMATION INTEGRATED ELECTRONIC SOLUTIONS PTY. LTD. ABN 17 080 879 616
Postal address: Integrated Electronic Solutions PO Box 2226 Port Adelaide SA 5015 AUSTRALIA Street Address: Integrated Electronic Solutions 1 Butler Drive Hendon SA 5014 AUSTRALIA Telephone: +61 8 8348 5200 Facsimile: +61 8 8243 1048 World Wide Web: www.ies-sa.com Email: IES@ies.sa.com.au
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Integrated Electronic Solutions, Hendon, South Australia
Data Sheet
General purpose triggering circuit
16 DISCLAIMER
OM5428
Integrated Electronic Solutions Pty. Ltd. ABN 17 080 879 616 ("IES") reserves the right to make changes to both its products and product data without notice. IES makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does IES assume any liability arising out of the use or application of any IES product. IES specifically disclaims any and all liability, including without limitation incidental or consequential damages. Typical performance figures, where quoted may depend on the application and therefore must be validated by the customer in each particular application. It is the responsibility of customers to ensure that any designs using IES products comply with good practice, applicable standards and approvals. IES accepts no responsibility for incorrect or non-compliant use of its products, failure to meet appropriate standards and approvals in the application of IES products, or for the correct engineering choice of other connected components, layout and operation of IES products. Any customer purchasing or using IES product(s) for an unintended or unauthorised application shall indemnify and hold IES and its officers, employees, related companies, affiliates and distributors harmless against all claims, costs, damages, expenses, and reasonable legal fees arising out of, directly or indirectly, any claim of loss, personal injury or death associated with such unintended or unauthorised use, even if such claim alleges that IES was negligent regarding the design or manufacture of the relevant product(s).
Life Support Applications Products of Integrated Electronic Solutions Pty Ltd (IES) are not designed for use in life support appliances, devices or systems, where malfunction can result in personal injury. Customers using or selling IES products for use in such applications do so at their own risk and agree to fully indemnify IES for any damages resulting from such improper use or sale.
2002 Nov 08
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