
Rev Date: 01/14/2015 1 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
Welded Ceramic Housed Axial Leaded Wirewound Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Features:
• Welded element on ceramic core
• Low noise, high reliability compared to fiberglass core wirewounds
• Fireproof power wirewound
• High thermal conductivity
• NWCB – Non-inductively Ayrton Perry winding
• Body standoffs available; add “F” after WCB
• RoHS compliant / lead-free
Electrical Specifications
WCB5, WCBF5 5W
1
- 10K
WCB7, WCBF7 7W
1 - 15K
WCB10, WCBF10 10W
1
-
20K
WCB15, WCBF15 15W 1
- 20K
WCB20, WCBF20 20W 1
- 20K
WCB25, WCBF25 25W
1 - 20K
NWCB5 5W
0.1 - 4.7K
NWCB7 7W
0.1 - 7.5K
NWCB10
10W 0.1 -
10K
NWCB15
15W 0.1
- 10K
NWCB20 20W
0.1 -
10K
NWCB25
25W 0.1
- 10K
0.
1Ω
to 10
Ω
=
±
50
ppm
/ºC
>
10
Ω
= ±
20ppm/ºC
Ohmic Range(Ω) and Tolerance
Power Rating
(Watts) @ 70ºC
Mechanical Specifications
0.875 ± 0.039 0.375 ± 0.039 0.375 ± 0.039 0.036 ± 0.002 0.437 ± 0.039 1.500 ± 0.250 inches
22.23 ± 0.99 9.53 ± 0.99 9.53 ± 0.99 0.91 ± 0.05 11.10 ± 0.99 38.10 ± 6.35 mm
1.400 ± 0.039 0.375 ± 0.039 0.375 ± 0.039 0.036 ± 0.002 0.500 ± 0.039 1.500 ± 0.250 inches
35.56 ± 0.99 9.53 ± 0.99 9.53 ± 0.99 0.91 ± 0.05 12.70 ± 0.99 38.10 ± 6.35 mm
1.875 ± 0.039 0.375 ± 0.039 0.375 ± 0.039 0.036 ± 0.002 0.500 ± 0.039 1.500 ± 0.250 inches
47.63 ± 0.99 9.53 ± 0.99 9.53 ± 0.99 0.91 ± 0.05 12.70 ± 0.99 38.10 ± 6.35 mm
1.875 ± 0.039 0.500 ± 0.039 0.500 ± 0.039 0.036 ± 0.002 0.625 ± 0.039 1.500 ± 0.250 inches
47.63 ± 0.99 12.70 ± 0.99 12.70 ± 0.99 0.91 ± 0.05 15.88 ± 0.99 38.10 ± 6.35 mm
2.500 ± 0.039 0.500 ± 0.039 0.500 ± 0.039 0.036 ± 0.002 0.625 ± 0.039 1.500 ± 0.250 inches
63.50 ± 0.99 12.70 ± 0.99 12.70 ± 0.99 0.91 ± 0.05 15.88 ± 0.99 38.10 ± 6.35 mm
2.500 ± 0.039 0.500 ± 0.039 0.500 ± 0.039 0.036 ± 0.002 0.625 ± 0.039 1.500 ± 0.250 inches
63.50 ± 0.99 12.70 ± 0.99 12.70 ± 0.99 0.91 ± 0.05 15.88 ± 0.99 38.10 ± 6.35 mm