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SD1542
RF & MICROWAVE TRANSISTORS AVIONICS APPLICATIONS
.DESI .600 .550 .5. .REFRACTORY .BALLASTI .30: .I
DESCRIPTION
GNED FOR HIGH POWER PULSED IFF AND DME APPLICATIONS WATTS (typ.) IFF 1030/1090 MHz WATTS (min.) DME 1025 - 1150 MHz 6 dB MIN. GAIN GOLD METALLIZATION NG AND LOW THERMAL RESISTANCE FOR RELIABILITY AND RUGGEDNESS 1 LOAD VSWR CAPABILITY AT SPECIFIED OPERATING CONDITIONS NTERNAL INPUT/OUTPUT MATCHED, COMMON BASE CONFIGURATION
.400 x .500 2LFL (M112) hermetically sealed ORDER CODE SD1542 BRANDING SD1542
PIN CONNECTION
The SD1542 is a hermetically sealed, gold metallized, silicon NPN power transistor. The SD1542 is designed for applications requiring high peak power and low duty cycles such as IFF and DME. The SD1542 is packaged in a hermetic metal/ceramic package with internal input/output matching, resulting in improved broadband performance and a low thermal resistance. ABSOLUTE MAXIMUM RATINGS (T case = 25 C)
Symbol Parameter
1. Collector 2. Base
3. Emitter 4. Base
Value
Unit
VCBO VCES VEBO IC PDISS TJ TSTG
Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Device Current Power Dissipation Junction Temperature Storage Temperature
65 65 3.5 40 1350 +200 - 65 to +200
V V V A W C C
THERMAL DATA RTH(j-c)
November 1992
Junction-Case Thermal Resistance
0.06
C/W
1/4
SD1542
ELECTRICAL SPECIFICATIONS (T case = 25 C) STATIC
Symbol Test Conditions Value Min. Typ. Max. Unit
BVCBO BVCES BVEBO ICES hFE
IC = 25mA IC = 50mA IE = 10mA VCE = 50V VCE = 5V
IE = 0mA VBE = 0V IC = 0mA IE = 0mA IC = .25A
65 65 3.5 -- 5
-- -- -- -- --
-- -- -- 35 200
V V V mA --
DYNAMIC
Symbol Test Conditions Value Min. Typ. Max. Unit
POUT GP
Note:
f = 1025 -- 1150MHz PIN = 150 W f = 1025 -- 1150MHz PIN = 150 W = 10Sec, Duty Cycle = 1%
VCE = 50 V VCE = 50 V
550 5.6
-- --
-- --
W dB
Pulse Width
IMPEDANCE DATA
TYPICAL INPUT IMPEDANCE
TYPICAL COLLECTOR LOAD IMPEDANCE
FREQ. 1020 MHz 1090 MHz 1150 MHz PIN = 150 W VCE = 50 V
2/4
ZIN () 1.78 + j 3.0 1.57 + j 2.1 1.55 + j 1.4
ZCL () 1.33 - j 2.7 1.64 - j 3.4 1.93 - j 4.0
SD1542
TEST CIRCUIT
All Dimensions are in inches Unless Otherwise Specified C1 : C2, C3, C4 : C5 : C6 : C7 : L1 L2 0.4 - 2.5pF Johanson Gigatrim 0.6 - 4.5pF Johanson Gigatrim 82pF Chip Capacitor, .055 Sq. Pair of 820pF Chip Capacitors, .11 Sq. 1000F Electrolytic
Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z9
: : : : : : : : :
50 (.02 Wide) .250 x .120 50, .020 x .330; C1 Tapped .15 From Load .145 x .920 .325 x .180 .730 x .315 .710 x .425 with .140 x .150 Cutout .035 x .780; C4 Tapped .36 from Center 50 (.02 Wide)
: Loop, #18 Tinned, .36 Wide x .27 Above Circuit : 4 3/4 Turns, #24 Enameled, Close Wound, .075 I.D.
C1, C4 : Cold End Terminated Through Eyelet
PC BOARD LAYOUT
3/4
SD1542
PACKAGE MECHANICAL DATA Ref.: Dwg. No.12-0112
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectonics. (c) 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A
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