ENGINEERING DATA SHEET
WB260
RELAY - NONLATCH
2 PDT, 2 AMP, BIFILAR COIL
Non polarized, non latching hermetically sealed relay with bifilar coil
Contact arrangement
Coil supply
Accordance with
2 PDT
Direct current
MIL-PRF-39016/22
PRINCIPLE TECHNICAL CHARACTERISTICS
Contacts rated at
Weight
Dimensions of case
2 Amp / 28Vdc
10 grams max
20.6mm x 12.5m x 10.4mm max
Hermetically sealed, corrosion protected metal can.
APPLICATION NOTES:
001
007
APPLICABLE SOCKETS:
HRCW
SO9005
SF250-R4
CONTACT ELECTRICAL CHARACTERISTICS
Minimum
operating cycles
100,000 cycles
100,000 cycles
500,000 cycles
100 cycles
Contact rating per
pole and load type
resistive load
inductive load
low level (D option)
resistive overload
Load Current in Amps
@28Vdc
2
0.5
-
4
@115Vac/60-400Hz
0.1
-
-
-
LEACH
®
INTERNATIONAL
Solutions for Power Switching and Control
North America
6900 Orangethorpe Ave.
P.O. Box 5032
Buena Park, CA 90622 USA
Tel: (01) 714-736-7599
Fax: (01) 714-670-1145
Europe, SA
2 Rue Goethe
57430 Sarralbe
France
Tel: (33) 3 87 97 98 97
Fax: (33) 3 87 97 84 04
Asia-Pacific Ltd.
20/F Shing Hing Commercial Bldg.
21-27 Wing Kut Street
Central, Hong Kong
Tel: (852) 2 191 2886
Fax: (852) 2 389 5803
www.leachintl.com
Date of issue: 6/00
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Page 1 of 4
COIL CHARACTERISTICS (Vdc)
CODE
Nominal operating voltage
Maximum operating voltage
Maximum pickup voltage at +125° C
Guaranteed drop-out voltage at -65° C
Coil resistance in
Ω
±10% at +25° C
Maximum exported spikes (Vdc)
A
26.5
32
20
1
700
48
B
12
15
9, 6
0.5
160
24
C
6
7.5
4.8
0.25
40
12
WB260
GENERAL CHARACTERISTICS
Temperature range
Dielectric strength at sea level all points
-between coil and case
-between coil and contats
-between contacts poles
-between open contacts
-between contacts and case
-65°C to +125°C
500 Vrms / 50 Hz
1000 Vrms / 50 Hz
1000 Vrms / 50 Hz
500 Vrms / 50 Hz
1000 Vrms / 50 Hz
Dielectric strength at altitude 80,000 ft, all terminals to ground
Initial insulation resistance at 100 Vdc
Sinusoidal vibration
Shock
Maximum contact opening time under vibration and shock
Operate time at nominal voltage
Release time
Bounce time
Contact resistance at nominal current
350 Vrms / 50 Hz
>10000 M
Ω
30 G / 10 to 3000 Hz
100 G / 6 ms
10 µs
4 ms max
4 ms max
2 ms max
50 mΩ max
Date of issue: 6/00
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Page 2 of 4
MOUNTING STYLES
WB260
Dimensions in mm
Tolerances unless otherwise specified ±0.25mm
TERMINAL TYPES
Date of issue: 6/00
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Page 3 of 4
SCHEMATIC DIAGRAM
WB260
NUMBERING SYSTEM
WB260 A
4
A
D
Basic series designation__________________________|
|
|
|
|
1-Mounting Style (A,B,F,R,T)__________________________|
|
|
|
2-Terminal Types(1,2,4)___________________________________|
|
|
3-Coil Voltage (A,B,C,________________________________________|
|
4-Option D: Dry Circuit Capability_________________________________|
10µA/10mV, contact resistance
≤
50
Ω
NOTES
1.
Socket:
1.2 HRCW - 1M With mounting hardware and solder connections.
1.2 SF 250 R4 With mounting hardware and crimping contacts.
1.3 SO-9005 for printed circuit board.
2.
Isolation spacer pads for PCB mounting available on request
3.
Ultra sonic cleaning may adversely effect the normally closed contacts
TYPICAL CHARACTERISTICS
q
Coil resistance/temperature change: See application note no. 001
Date of issue: 6/00
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Page 4 of 4
Application notes
N°001
CORRECTION DUE TO COIL COPPER WIRE RESISTANCE
CHANGE IN TEMPERATURE
Example: Coil resistance at 25°C: 935 ohms. What is it at 125°C?
Correction coefficient on diagram is: 1.39 at 125°C. R becomes: 935x1.39=1299 Ohms
Correction also applies to operating voltages
Date of issue: 6/00
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