CB Series
Ceramic Housed with Axial Leads Wirewound Resistor
Features:
•
•
•
•
•
Fireproof power wirewound
High thermal conductivity
Non-inductive styles available
Body standoffs available; add “F” after CB
RoHS compliant / lead-free
Stackpole Electronics, Inc.
Resistive Product Solutions
Electrical Specifications
Type / Code
CB2
CB3
CB5
CB7
CB10
CB15
CB20
CB22
CB25
CB30
WCB2
WCB3
WCB5
WCB7
WCB10
WCB15
MCB3
MCB5
MCB7
Power Rating
(Watts) @ 70ºC
2W
3W
5W
7W
10W
15W
20W
22W
25W
30W
2W
3W
5W
7W
10W
15W
3W
5W
7W
±200ppm/ºC
0.1Ω to 10Ω = ±50ppm/ºC
>10Ω = ±20ppm/ºC
<1Ω = ±800ppm/ºC
≥1Ω
= ±300ppm/ºC
TCR (ppm/ºC)
Ohmic Range(Ω) and Tolerance
0.5%
-
-
-
-
-
-
-
-
-
-
1 - 5K
1 - 10K
1 - 10K
1 - 15K
1 - 20K
1 - 20K
-
-
-
1%
-
-
-
-
-
-
-
-
-
-
0.1 - 5K
0.1 - 10K
0.1 - 10K
0.1 - 15K
0.1 - 20K
0.1 - 20K
-
-
-
5%
0.1 - 300
0.1 - 680
0.1 - 680
0.1 - 1.5K
0.1 - 2K
0.15 - 2K
0.2 - 2K
1 - 250
0.2 - 2K
1 - 250
0.1 - 5K
0.1 - 10K
0.1 - 10K
0.1 - 15K
0.1 - 20K
0.1 - 20K
1 - 500K
1 - 500K
1 - 500K
10%
0.1 - 300
0.1 - 680
0.1 - 680
0.1 - 1.5K
0.1 - 2K
0.15 - 2K
0.2 - 2K
1 - 250
0.2 - 2K
1 - 250
-
-
-
-
-
-
-
-
-
Rev Date: 07/23/2012
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
CB Series
Ceramic Housed with Axial Leads Wirewound Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Mechanical Specifications
Type / Code
CB2, WCB2
CB3, WCB3,
MCB3
CB5, WCB5,
MCB5
CB7, WCB7,
MCB7
CB10, WCB10
CB15, WCB15
CB20
CB22
CB25
CB30
A
Body Length
0.700
17.8
0.875
22.2
0.875
22.2
1.400
35.6
1.875
47.6
1.875
47.6
2.500
63.5
2.500
63.5
2.500
63.5
2.500
63.5
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
B
Height
0.245
6.2
0.312
7.9
0.375
9.5
0.375
9.5
0.375
9.5
0.500
12.7
0.500
12.7
0.500
12.7
0.500
12.7
0.625
15.9
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
C
Width
0.255
6.5
0.312
7.9
0.375
9.5
0.375
9.5
0.375
9.5
0.500
12.7
0.500
12.7
0.500
12.7
0.500
12.7
0.625
15.9
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
D
Lead Diameter
0.032
0.8
0.032
0.8
0.032
0.8
0.036
0.9
0.036
0.9
0.036
0.9
0.036
0.9
0.036
0.9
0.036
0.9
0.036
0.9
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
0.002
0.1
0.002
0.1
0.002
0.1
0.002
0.1
0.002
0.1
0.002
0.1
0.002
0.1
0.002
0.1
0.002
0.1
0.002
0.1
E
Height with
Standoff
0.300
7.6
0.375
9.5
0.437
11.1
0.500
12.7
0.500
12.7
0.625
15.9
0.625
15.9
0.625
15.9
0.625
15.9
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
-
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
F
Lead Length
1.500
38.1
1.500
38.1
1.500
38.1
1.500
38.1
1.500
38.1
1.500
38.1
1.500
38.1
1.500
38.1
1.500
38.1
1.500
38.1
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
0.250
6.4
0.250
6.4
0.250
6.4
0.250
6.4
0.250
6.4
0.250
6.4
0.250
6.4
0.250
6.4
0.250
6.4
0.250
6.4
Unit
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
Performance Characteristics
Test
Moisture Resistance
Thermal Shock
Load Life @ 70°C - 1,000 hrs.
Resistance to Soldering Heat
Short Time Overload - 5xPn for 5sec
Dielectric Withstanding Voltage
Operating Temperature Range: -55°C to +275°C
120
Test Results
± 5%
± 2%
± 5%
± 2%
± 2%
± 2%
Power Derating Curve:
Percent Rated Power (%)
100
80
60
40
20
25
75
125
175
225
275
325
Ambient Temperature (ºC)
Rev Date: 07/23/2012
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
CB Series
Ceramic Housed with Axial Leads Wirewound Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
How to Order
1
2
3
4
5
6
7
8
9
C
Product Series
CB
WCB
MCB
CBF
WCBF
MCBF
NCB
NCBF
Standard
B
Series Code
2
3
5
7
10
CB
15
20
22
25
30
2
3
5
WCB
7
10
15
3
MCB
5
7
2
Power
2W
3W
5W
7W
10W
15W
20W
22W
25W
30W
2W
3W
5W
7W
10W
15W
3W
5W
7W
J
Tolerance
Tol
Code
0.5%
D
1%
F
5%
J
10%
K
B
1
0
0
R
Resistance Value
Four characters with
the multiplier used as
the decimal holder.
0.1 ohm = R100
33 ohm = 33R0
3.32 Kohm = 3K32
Code Description
With standoff
Non-inductive
Non-inductive with standoff
B
Bulk
Packaging
Size
Quantity
CB2, CB3, CB5
750
MCB3, MCB5
WCB2, WCB3, WCB5
500
CB7, CB10, CB15
250
WCB7, WCB10, WCB15
MCB 7
CB20, CB22, CB25, CB30
100
Legacy Part Number (before January 3, 2011):
Nominal
Resistance
SEI Type
Code
Tolerance
Packaging
CB
Code
CB
WCB
MCB
CBF
WCBF
MCBF
NCB
NCBF
Description
Standard
2
Code
2
3
5
7
10
15
20
22
25
30
100
5%
Tolerance
0.5%
1%
5%
10%
SEI Types
CB2,CB3,CB5,MCB3,MCB5
WCB2,WCB3,WCB5
CB7,CB10,CB15,WCB7
WCB10,WCB15,MCB7
CB20,CB22,CB25,CB30
B
Pkg Qty
750
500
250
100
Description
Code
Bulk
B
With standoff
Non inductive
Non inductive
with standoff
Rev Date: 07/23/2012
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
3
www.seielect.com
marketing@seielect.com
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