WRC Series
Conformal Coated Welded Wirewound
Features:
•
•
•
•
Conformal coating
Flameproof construction
Cut and formed product is available on select sizes
Contact factory for details
RoHS compliant / lead-free
Stackpole Electronics, Inc.
Resistive Product Solutions
Electrical Specifications
Type / Code
WRC 1S
WRC 1
WRC 2A
WRC 3A
WRC 4A
WRC 5A
WRC 3B
WRC 4B
WRC 5B
Size
0309
0410
0416
0416
0416
0416
0617
0617
0617
Power Rating
(Watts) @ 25ºC
1W
1W
2W
3W
4W
5W
3W
4W
5.5W
Maximum
Working
Voltage
√PR
√PR
√PR
√PR
√PR
√PR
√PR
√PR
√PR
Dielectric
Withstanding
Voltage (RMS)
700V
700V
700V
700V
700V
700V
700V
700V
700V
Resistance Temperature
Coefficient
-80 ppm/ºC ~ +900 ppm/ºC
-80 ppm/ºC ~ +900 ppm/ºC
-80 ppm/ºC ~ +900 ppm/ºC
-80 ppm/ºC ~ +900 ppm/ºC
-80 ppm/ºC ~ +900 ppm/ºC
-80 ppm/ºC ~ +900 ppm/ºC
-80 ppm/ºC ~ +900 ppm/ºC
-80 ppm/ºC ~ +900 ppm/ºC
-80 ppm/ºC ~ +900 ppm/ºC
Ohmic Range and
Tolerance
5%
0.1Ω - 100Ω
0.1Ω - 470Ω
0.1Ω - 470Ω
0.1Ω - 470Ω
0.1Ω - 470Ω
0.1Ω - 470Ω
0.1Ω - 680Ω
0.1Ω - 680Ω
0.1Ω - 680Ω
Mechanical Specifications
Type / Code
WRC 1S
WRC 1
WRC 2A, 3A, 4A, 5A
WRC 3B, 4B, 5B
A
Body Length
0.35 max
9 max
0.39 max
10 max
0.49 max
12.5 max
0.63 max
16 max
B
Body Width
0.138 max
3.5 max
0.16 max
4.1 max
0.22 max
5.5 max
0.24 max
6 max
C
Lead Length (Bulk)
1.1 ± 0.08
28 ± 2
1.1 ± 0.08
28 ± 2
1.1 ± 0.12
28 ± 3
1.1 ± 0.12
28 ± 3
D
Lead Diameter
0.024 ± 0.002
0.6 ± 0.05
0.028 ± 0.002
0.72 ± 0.05
0.028 ± 0.002
0.72 ± 0.05
0.028 ± 0.002
0.72 ± 0.05
Units
inches
mm
inches
mm
inches
mm
inches
mm
How to Order
SEI Type
Code
Nominal
Resistance
Tolerance
Packaging
WRC
Type
WRC
Description
Standard
2A
Code
1S
4A
1
5A
2A
3B
3A
4B
5B
300
5%
Tolerance
5%
Values
E24
Type
1S
1
2A, 3A, 4A, 5A, 3B, 4B, 5B
1S
1, 2A, 3A, 4A, 5A, 3B, 4B, 5B
A
Pkg Qty
5,000
2,000
1,000
2,000
1,000
Description
Reel
Ammo
Code
R
A
Rev Date: 9/30/2009
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
1
www.seielect.com
marketing@seielect.com
WRC Series
Conformal Coated Welded Wirewound
Stackpole Electronics, Inc.
Resistive Product Solutions
Performance Characteristics
Test
Moisture Resistance
Thermal Shock
Load Life @ 70ºC - 1,000 hrs.
Shock and Vibration
Resistance to Soldering Heat
Short Time Overload
Operating Temperature Range
Test Results
± 5% + 0.05Ω
± 2% + 0.05Ω
± 5% + 0.05Ω
± 1% + 0.05Ω
± 2% + 0.05Ω
± 3% + 0.05Ω
-55ºC to +250ºC
Power Derating
120
100
80
60
40
20
0
25
50
% of Rated Power
85ºC
2A, 3A, 4A, 5A
3B, 4B, 5B
1S, 1
100
150
200
Ambient Temp. (ºC)
225
250
Rev Date: 9/30/2009
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
2
www.seielect.com
marketing@seielect.com