Surface Mounted
Resistors
CR Series
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Electrical Data
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
© Welwyn Components Limited
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Commercial
Power rating at 70°C
Resistance range
Limiting element voltage
TCR -55° to +155°C
Resistance tolerance
Ambient temperature range
Approved CECC 40401-004
Power rating at 70°C
Resistance range
Limiting element voltage
TCR -55°C to +125°C
TCR +20°C to +70°C
Resistance tolerance
Ambient temperature range
Approved CECC 40401-008
Power rating at 70°C
Resistance range
Limiting element voltage
TCR -55°C to +155°C
Resistance tolerance
Ambient temperature range
Approved CECC 40401-003
Power rating at 70°C
Resistance range
Limiting element voltage
TCR -55°C to +125°C
Resistance tolerance
Ambient temperature range
Values
Thermal impedance
CECC released products
Custom designs/sizes available
Any resistance value available within specified range
Terminations available for wire bonding or soldering
Available in sizes down to 0503
Resistance range 1 ohm to100M ohms
Tolerances down to 0.1%
Solder terminations have a nickel barrier layer
Shorting Links available
ppm/°C
ppm/°C
ppm/°C
ppm/°C
ppm/°C
°C/watt
· Bedlington, Northumberland NE22 7AA, UK
watts
ohms
watts
ohms
watts
ohms
watts
ohms
volts
volts
volts
volts
°C
°C
°C
°C
%
%
%
%
1R to 10M
CR0503
0.063
800
50
1R to 10M
1R to 3M
CR0805
CR0805
CR0805
CR0805
0.125
0.125
0.125
0.063
100
100
100
100
360
<10 ohms 200: 10 to 1M 100: >1M 200
<10 ohms 200: 10 to 1M 50: >1M 100
<10 ohms 350: 10 to 100 ohms 200:
10 to 3M ohms 100: >3M ohms 250
<10 ohms 200: 10 to 1M ohms 100:
100 to 1M ohm 100: >1M ohm 250
<5 ohms 500: 5 to 10 ohms 350:
1R to 100M
1R to 10M
0.1, 0.25, 0.5, 1, 2, 5
0.1, 0.25, 0.5, 1, 2, 5
CR1005
E24 & E96 preferred
0.125
150
0.25, 0.5, 1, 2, 5
290
>1M ohms 250
-55 to +125
0.5, 1, 2, 5
-55 to 155
-55 to 155
-55 to 125
1R to 10M
1R to 5M
CR1206
CR1206
CR1206
CR1206
0.125
0.25
0.25
0.25
200
200
200
200
200
1R to 1M
CR2010
CR2010
400
400
0.5
0.5
80
1R to 1M
Welwyn Components
1R to 1M
CR2512
CR2512
500
500
1.0
1.0
70
See table of value ranges
See table of value ranges
See table of value ranges
See table of value ranges
Mounted on custom
Any value to order
designed PCB’s
Notes
TT electronics plc
A subsidiary of
Issue F · 10.05
17