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Mechanical Key Switch
Double-sealing Construction Assures Water-tight/Dust-tight Protection 8 x 8 mm compact size Allows the use of radial-taping part
insertion machines
B3WN
Conforms to IEC529 IP67
Ordering Information
Size 8 x 8 mm
Height x pitch 13 x 5 mm
Operating force (OF) 200 gf
Part Number B3WN-6002
Note: Orders must be made in units of 1,000 pieces.
CONSTRUCTION
Pushbutton Case
Rubber seal Film Plunger Disc spring
Base Terminal
B3WN
B3WN
Characteristics
Switching capacity Insulation voltage Contact configuration Contact material Contact resistance Insulation resistance Dielectric strength Bounce time Vibration resistance Shock resistance Life expectancy Ambient temperature Ambient humidity Weight Operating Operating 50 mA, 12 VDC (resistive load) 30 VDC SPST-NO Silver plating 100 m max. (initial value) (rated: 1 mA, 5 VDC) 100 M min. (at 100 VDC) 250 VAC, 50/60Hz for 1 min 10 ms max. Malfunction: 10 to 55 Hz, 1.5-mm double amplitude Destruction: 784 m/s2 min. {approx. 80G min.} Malfunction: 100 m/s2 min. {approx. 10G min.} 100,000 operations min. --25C to 85C (--13F to 185F) with no icing 35% to 85% Approx. 0.7 g
CHARACTERISTIC DATA
Operating force (gf)
Stroke S (mm)
OPERATING CHARACTERISTICS
B3WN-6002 Operating force (OF) Releasing force (RF) Pretravel (PT) 20070 gf 50 gf min. 0.3 --0.1 mm
+0.2
B3WN
B3WN
Dimensions
Unit: mm (inch)
B3WN-6002
80.2 (0.310.008) 80.2 (0.310.008) 3.8 (0.15) dia. Recommended mounting holes and internal connection (PCB thickness t=1.6 mm) 6.351.0 (0.250.04)
12.71.0 (0.500.04)
0.2 (0.008) max.
130.2 (0.510.008) 9 (0.35)
0.9 (0.04)
Fixed tape
0.9 (0.04)
0.5 (0.02) max.
0.6 (0.02) 50.2 (0.200.008)
0.3 (0.01)
0.2 (0.008) max.
0.6 18+1 0 (0.02) (0.71+0.04 )
0
18+1
--0.5
(0.71+0.04 )
--0.02
PCB Pad Terminal Arrangement/ (Top View) Internal Connection (One-side PCB t=1.6) (Top View)
Two, 1 +0.1 dia. 0
40.3 dia. (0.160.01 dia.) 3.850.5 (0.150.02) 12.70.3 12.70.3 (0.500.01) (0.500.01) Master tape
50.1 (0.200.004)
Note: 1. In accordance with EIAJ RC-1008, unless otherwise specified. 2. Switch fixing direction (A and B) on the tape may change.
Precautions
OPERATION
Do not repeatedly operate the Switch with high force, apply additional force to the pushbutton once it has stopped moving, or operate the Switch with excessive force, otherwise the disc spring of the Switch may deform and the Switch may malfunction. Be sure to set the Switch so that the pushbutton will be pressed straight. A decrease in the life of the Switch may result if the pushbutton is pressed off-center or from an acute angle.
PCB
The Switch is designed for a 1.6-mm-thick, single-sided PCB as a standard PCB. The Switch may not be mounted to any other type of PCB, such as a double-sided, through-hole PCB, or any other one that is different in thickness. Furthermore, the Switch may not operate properly or withstand the soldering heat if it is mounted to such a PCB. Be sure to test the PCB before use.
SOLDERING
The Switch can be soldered automatically or manually. The automatic soldering of the Switch on a 1.6-mm-thick, single-sided PCB must be completed within five seconds at a soldering temperature of 260C maximum. The manual soldering of the Switch on a 1.6-mm-thick, single-sided PCB must be completed within three seconds at a soldering iron tip temperature of 350C maximum. When using a multi-layer PCB, test the PCB in advance because the Switch mounted to the PCB may be deformed by heat if the pattern or land design is improper. Soldering may be repeated only once at a minimum interval of five minutes if the Switch is not soldered properly. Make sure that no flux will rise on the mounting surface of the PCB.
B3WN
B3WN
PACKAGE
B3WN Switches are packed on tape as shown below.
B3WN Switches on tape
OTHER PRECAUTIONS
When using the Switch in a very humid environment or where condensation may occur: mount switch first, then completely cover the terminals with coating in order to prevent current leakage from terminals. Do not use coating materials that contain toluene or xylene.
Package Stored zigzag 350
326 53
Do not press strongly, vibrate, or drop the package, otherwise the terminals of the Switches may deform. Pull out the tape slowly. Make sure that the tape is not entangled while pulling it out, otherwise the terminals of the Switches may deform. Do not store the package in locations with high temperature or high humidity. Use the Switches as soon as possible. The package made of paper is not tightly sealed. Storing the package in locations with high temperature or high humidity for a long time may result in the discoloration of the Switch terminals.
NOTE: DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters to inches divide by 25.4.
Omron Europe B.V. EMA-ISD, tel:+31 23 5681390, fax:+31 23 5681397, http://www.eu.omron.com/ema
Cat. No. A112-E3-1
12/98
Specifications subject to change without notice.
Printed in U.S.A.

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