Rev Date: 01/28/2010 81 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.
CB Series
Ceramic Housed Wirewound with Axial Leads
Stackpole Electronics, Inc.
Resistive Product Solutions
Features:
Fireproof power wirewound
High thermal conductivity
Different element(resistor) available:
precision / ceramic & metal oxide
Non-inductive styles available
Body standoffs available; add “F” after CB
RoHS compliant / lead-free
0.5% 1% 5% 10%
CB 2 2 - - 0.1 - 300 0.1 - 300
CB 3 3 - - 0.1 - 680 0.1 - 680
CB 5 5 - - 0.1 - 680 0.1 - 680
CB 7 7 - - 0.1 - 1.5K 0.1 - 1.5K
CB 10 10 - - 0.1 - 2K 0.1 - 2K
CB 15 15 - - 0.15 - 2K 0.15 - 2K
CB 20 20 - - 0.2 - 2K 0.2 - 2K
CB 22 22 - - 1 - 250 1 - 250
CB 25 25 - - 0.2 - 2K 0.2 - 2K
CB 30 30 - - 1 - 250 1 - 250
WCB 2 2 1 - 5K 1 - 5K 1 - 5K -
WCB 3 3 1 - 10K 1 - 10K 1 - 10K -
WCB 5 5 1 - 10K 1 - 10K 1 - 10K -
WCB 7 7 1 - 15K 1 - 15K 1 - 15K -
WCB 10 10 1 - 20K 1 - 20K 1 - 20K -
WCB 15 15 1 - 20K 1 - 20K 1 - 20K -
MCB 3 3 - - 1 - 500K -
MCB 5 5 - - 1 - 500K -
MCB 7 7 - - 1 - 500K -
Resistance Temperature Coefficient Standard:
CB series: ±800ppm below 1 & ±300ppm for 1 and above;
WCB series: ±50ppm from 1 to 10 & ±20ppm above 10;
MCB series: ±200ppm
Ohmic Range() and Tolerance
Type / Code Power Rating
(Watts) @ 70ºC
Electrical Specifications
Nominal
Resistance Tolerance
100 5%
Code Description Tolerance SEI Types Pkg Qty Description Code
CB 2 3 0.5% CB 2, CB 3, CB 5, MCB 3, MCB 5 750
WCB 5 7 1% WCB 2, WCB 3, WCB 5 500
MCB 10 15 5%
CBF 20 22 10%
WCBF 25 30 CB 20, CB 22, CB 25, CB 30 100
MCBF
NWCB Non inductive
NWCBF Non inductive
with standoff
Bulk B
CB 2 B
Code
Standard
With standoff
CB 7, CB 10, CB 15, WCB 7,
WCB 10, WCB 15, MCB 7 250
SEI Type Code Packaging
How to Order
Rev Date: 01/28/2010 82 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.
CB Series
Ceramic Housed Wirewound with Axial Leads
Stackpole Electronics, Inc.
Resistive Product Solutions
0.709 ± 0.039 0.276 ± 0.039 0.276 ± 0.039 0.025 ± 0.039 0.3 ± 0.039 inches
18 ± 1 7 ± 1 7 ± 1 0.65 ± 1 7.6 ± 1 mm
0.866 ± 0.039 0.312 ± 0.039 0.312 ± 0.039 0.032 ± 0.039 0.375 ± 0.039 inches
22 ± 1 8 ± 1 8 ± 1 0.81 ± 1 9.5 ± 1 mm
0.866 ± 0.039 0.394 ± 0.039 0.394 ± 0.039 0.032 ± 0.039 0.437 ± 0.039 inches
22 ± 1 10 ± 1 10 ± 1 0.81 ± 1 11.1 ± 1 mm
1.378 ± 0.039 0.394 ± 0.039 0.394 ± 0.039 0.032 ± 0.039 0.5 ± 0.039 inches
35 ± 1 10 ± 1 10 ± 1 0.81 ± 1 12.7 ± 1 mm
1.89 ± 0.039 0.394 ± 0.039 0.394 ± 0.039 0.032 ± 0.039 0.5 ± 0.039 inches
48 ± 1 10 ± 1 10 ± 1 0.81 ± 1 12.7 ± 1 mm
1.89 ± 0.039 0.492 ± 0.039 0.492 ± 0.039 0.032 ± 0.039 0.625 ± 0.039 inches
48 ± 1 12.5 ± 1 12.5 ± 1 0.81 ± 1 15.9 ± 1 mm
2.362 ± 0.039 0.571 ± 0.039 0.531 ± 0.039 0.032 ± 0.039 0.625 ± 0.039 inches
60 ± 1 14.5 ± 1 13.5 ± 1 0.81 ± 1 15.9 ± 1 mm
2.5 ± 0.039 0.5 ± 0.039 0.5 ± 0.039 0.036 ± 0.039 0.625 ± 0.039 inches
63.5 ± 1 12.7 ± 1 12.7 ± 1 0.91 ± 1 15.9 ± 1 mm
2.362 ± 0.039 0.571 ± 0.039 0.531 ± 0.039 0.032 ± 0.039 0.625 ± 0.039 inches
60 ± 1 14.5 ± 1 13.5 ± 1 0.81 ± 1 15.9 ± 1 mm
2.5 ± 0.039 0.625 ± 0.039 0.625 ± 0.039 0.036 ± 0.039 inches
63.5 ± 1 15.9 ± 1 15.9 ± 1 0.91 ± 1 mm
0.7 ± 0.039 0.245 ± 0.039 0.255 ± 0.039 0.032 ± 0.039 0.3 ± 0.039 inches
17.8 ± 1 6.2 ± 1 6.5 ± 1 0.81 ± 1 7.6 ± 1 mm
0.875 ± 0.039 0.312 ± 0.039 0.312 ± 0.039 0.032 ± 0.039 0.375 ± 0.039 inches
22.2 ± 1 7.9 ± 1 7.9 ± 1 0.81 ± 1 9.5 ± 1 mm
0.875 ± 0.039 0.375 ± 0.039 0.375 ± 0.039 0.032 ± 0.039 0.437 ± 0.039 inches
22.2 ± 1 9.5 ± 1 9.5 ± 1 0.81 ± 1 11.1 ± 1 mm
1.4 ± 0.039 0.375 ± 0.039 0.375 ± 0.039 0.036 ± 0.039 0.5 ± 0.039 inches
35.6 ± 1 9.5 ± 1 9.5 ± 1 0.91 ± 1 12.7 ± 1 mm
1.875 ± 0.039 0.375 ± 0.039 0.375 ± 0.039 0.036 ± 0.039 0.5 ± 0.039 inches
47.6 ± 1 9.5 ± 1 9.5 ± 1 0.91 ± 1 12.7 ± 1 mm
1.875 ± 0.039 0.5 ± 0.039 0.5 ± 0.039 0.036 ± 0.039 0.625 ± 0.039 inches
47.6 ± 1 12.7 ± 1 12.7 ± 1 0.91 ± 1 15.9 ± 1 mm
EUnAB C D
WCB 15
CB 2
CB 3
CB 20
CB 22
CB 25
CB 30
WCB 10
WCB 7 / MCB 7
CB 7
CB 10
CB 15
CB 5
Type / Code
-
WCB 2
WCB 3 / MCB 3
WCB 5 / MCB 5
its
Mechanical Specifications
Rev Date: 01/28/2010 83 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.
CB Series
Ceramic Housed Wirewound with Axial Leads
Stackpole Electronics, Inc.
Resistive Product Solutions
± 5%
± 2%
± 5%
± 2%
± 2%
± 2%
Thermal Shock
Load Life @ 70°C - 1,000 hrs.
Test Test Results
Moisture Resistance
Operating Temperature Range: -55°C to +275°C
Dielectric Withstanding Voltage
Resistance to Soldering Heat
Short Time Overload - 5xPn for 5sec
Performance Characteristics