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IRC's Allen Bradley Carbon Comp Cross Reference
| Commercial Models |
Allen Bradley |
IRC Replacements |
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| 1/8 Watt |
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| Model |
BB (5%) |
RG 1/8 |
T0-, T2-, T9-50 |
TF-05 |
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| Construction |
Carbon Comp |
Metal Glaze |
Metal Glaze |
Metal Glaze |
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| Body Length |
0.145" |
0.150" |
0.150" |
0.150" |
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| Body Diameter |
0.062" |
0.066" |
0.066" |
0.066" |
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| Lead Diameter |
0.015" |
0.015" |
0.015" |
0.015" |
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| Resistance Range |
2.7 - 100M |
4.3 - 1.5M |
10 - 1M |
1 - 9.9 |
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| Max Oper Voltage |
150V |
200V |
200V |
200V |
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| 1/4 Watt |
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| Model |
CB (5%) |
IBT 1/4 |
RG 1/4 |
TF-05 |
AS 1/4 |
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| Construction |
Carbon Comp |
Carbon Comp |
Metal Glaze |
Metal Glaze |
Wirewound |
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| Body Length |
0.250" |
0.248" |
0.250" |
0.150" |
0.250" |
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| Body Diameter |
0.090" |
0.094" |
0.090" |
0.066" |
0.094" |
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| Lead Diameter |
0.025" |
0.024" |
0.025" |
0.015" |
0.020" |
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| Resistance Range |
2.7 - 100M |
1 - 5.6M |
4.3 - 5.1M |
1 - 9.9 |
0.1 - 1K |
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| Max Oper Voltage |
150V |
325V |
250V |
200V |
(P x R)1/2 |
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| 1/2 Watt |
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| Model |
EB (5%) |
IBT 1/2 |
RG 1/2 |
TF-20 |
AS 1/2 |
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| Construction |
Carbon Comp |
Carbon Comp |
Metal Glaze |
Metal Glaze |
Wirewound |
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| Body Length |
0.375" |
0.374" |
0.390" |
0.390" |
0.312" |
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| Body Diameter |
0.140" |
0.142" |
0.140" |
0.140" |
0.094" |
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| Lead Diameter |
0.033" |
0.0275" |
0.032" |
0.032" |
0.020" |
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| Resistance Range |
1 - 100M |
1 - 20M |
4.3 - 5.1M |
1 - 9.9 |
0.1 - 6K |
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| Max Oper Voltage |
350V |
325V |
350V |
350V |
(P x R)1/2 |
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| 1 Watt |
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| Model |
GB (5%) |
GS 3 |
LAS-1 |
AS-1 |
AS-1C |
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| Construction |
Carbon Comp |
Metal Glaze |
Wirewound |
Wirewound |
Wirewound |
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| Body Length |
0.562" |
0.515" |
0.348" |
0.367" |
0.256" |
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| Body Diameter |
0.225" |
0.225" |
0.110" |
0.125" |
0.115" |
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| Lead Diameter |
0.041" |
0.032" |
0.020" |
0.020", 0.025" |
0.020", 0.025" |
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| Resistance Range |
1 - 100M |
1 - 3M |
0.1 - 7.5K |
0.1 - 7.5K |
0.1 - 7.5K |
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| Max Oper Voltage |
500V |
1000V |
(P x R)1/2 |
(P x R)1/2 |
(P x R)1/2 |
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| 2 Watt |
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| Model |
HB (5%) |
GS 3 |
LAS-3 |
AS-2 |
AS-2B |
AS-2C |
AS-3 |
| Construction |
Carbon Comp |
Metal Glaze |
Wirewound |
Wirewound |
Wirewound |
Wirewound |
Wirewound |
| Body Length |
0.688" |
0.515" |
0.491" |
0.480" |
0.540" |
0.489" |
0.687" |
| Body Diameter |
0.312" |
0.225" |
0.149" |
0.250" |
0.219" |
0.157" |
0.282" |
| Lead Diameter |
0.045" |
0.032" |
0.032" |
0.032" |
0.032" |
0.032" |
0.032" |
| Resistance Range |
10 - 100M |
1 - 3M |
0.1 - 18K |
0.1 - 20K |
0.1 - 24K |
0.1 - 18K |
0.1 - 30K |
| Military Models |
Allen Bradley |
IRC Replacement |
| 1/8 Watt |
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| Model |
RC05 (5%) |
RN50 |
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| Military Specification |
MIL-R-11 |
MIL-R-10509 |
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| Construction |
Carbon Comp |
Metal Glaze |
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| Military Specification |
MIL-R-11 |
MIL-R-10509 |
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| Body Length |
0.145" |
0.150" |
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| Body Diameter |
0.062" |
0.066" |
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| Lead Diameter |
0.015" |
0.015" |
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| Resistance Range |
2.7 - 100M |
10 - 100K |
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| Max Oper Voltage |
150V |
200V |
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| 1/4 Watt |
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| Model |
RC07 (5%) |
RN55 |
RL07 |
CMH-1/4 |
| Military Specification |
MIL-R-11 |
MIL-R-10509 |
MIL-R-22684 |
MIL-R-49462 |
| Construction |
Carbon Comp |
Metal Glaze |
Metal Glaze |
Metal Glaze |
| Body Length |
0.250" |
0.250" |
0.250" |
0.275" |
| Body Diameter |
0.090" |
0.090" |
0.090" |
0.088" |
| Lead Diameter |
0.025" |
0.025" |
0.025" |
0.032" |
| Resistance Range |
2.7 - 100M |
10 - 301K |
51 - 150K |
330K - 100M |
| Max Oper Voltage |
150V |
200V |
250V |
750V |
| 1/2 Watt |
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| Model |
RC20 (5%) |
RN60 |
RL20 |
CMH-1/2 |
| Construction |
Carbon Comp |
Metal Glaze |
Metal Glaze |
Metal Glaze |
| Military Specification |
MIL-R-11 |
MIL-R-10509 |
MIL-R-22684 |
MIL-R-49462 |
| Body Length |
0.375" |
0.390" |
0.390" |
0.400" |
| Body Diameter |
0.140" |
0.140" |
0.140" |
0.138" |
| Lead Diameter |
0.033" |
0.032" |
0.032" |
0.032" |
| Resistance Range |
1 - 100M |
10 - 1M |
4.3 - 470K |
330K - 392M |
| Max Oper Voltage |
350V |
300V |
350V |
1500V |
| 1 Watt |
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| Model |
RC32 (5%) |
CMH-1 |
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| Construction |
Carbon Comp |
Metal Glaze |
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| Military Specification |
MIL-R-11 |
MIL-R-49462 |
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| Body Length |
0.562" |
0.690" |
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| Body Diameter |
0.225" |
0.237" |
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| Lead Diameter |
0.041" |
0.032" |
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| Resistance Range |
1 - 100M |
330K - 499M |
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| Max Oper Voltage |
500V |
3000V |
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| 2 Watt |
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| Model |
RC42 (5%) |
CMH-1 |
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| Construction |
Carbon Comp |
Metal Glaze |
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| Military Specification |
MIL-R-11 |
MIL-R-49462 |
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| Body Length |
0.688" |
0.400" |
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| Body Diameter |
0.312" |
0.138" |
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| Lead Diameter |
0.045" |
0.032" |
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| Resistance Range |
10 - 100M |
330K - 392M |
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| Max Oper Voltage |
500/750 V |
(P x R)1/2 |
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| High-Rel Models |
Allen Bradley |
IRC Replacement |
| 1/8 Watt |
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| Model |
RCR05 (5%) |
RNC50 |
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| Military Specification |
MIL-R-39008 |
MIL-R-55182 |
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| Construction |
Carbon Comp |
Metal Glaze |
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| Military Specification |
MIL-R-39008 |
MIL-R-55182 |
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| Body Length |
0.145" |
0.150" |
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| Body Diameter |
0.062" |
0.066" |
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| Lead Diameter |
0.015" |
0.015" |
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| Resistance Range |
2.7 - 100M |
10 - 301K |
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| Max Oper Voltage |
150V |
200V |
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| 1/4 Watt |
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| Model |
RCR07 (5%) |
RNC55 |
RLR07 |
| Military Specification |
MIL-R-39008 |
MIL-R-55182 |
MIL-R-39017 |
| Construction |
Carbon Comp |
Metal Glaze |
Metal Glaze |
| Body Length |
0.250" |
0.250" |
0.250" |
| Body Diameter |
0.090" |
0.090" |
0.090" |
| Lead Diameter |
0.025" |
0.025" |
0.025" |
| Resistance Range |
2.7 - 100M |
10 - 2M |
51 - 150K |
| Max Oper Voltage |
150V |
250V |
200V |
| 1/2 Watt |
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| Model |
RCR20 (5%) |
RNC60 |
RLR20 |
| Construction |
Carbon Comp |
Metal Glaze |
Metal Glaze |
| Military Specification |
MIL-R-39008 |
MIL-R-55182 |
MIL-R-39017 |
| Body Length |
0.375" |
0.390" |
0.390" |
| Body Diameter |
0.140" |
0.140" |
0.140" |
| Lead Diameter |
0.033" |
0.032" |
0.032" |
| Resistance Range |
1 - 100M |
10 - 100K |
4.3 - 470K |
| Max Oper Voltage |
350V |
250 |
350V |
| 1 Watt |
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| Model |
RCR32 (5%) |
CMH-1 |
GS 3 |
| Construction |
Carbon Comp |
Metal Glaze |
Metal Glaze |
| Military Specification |
MIL-R-11 |
MIL-R-49462 |
No |
| Body Length |
0.562" |
0.690" |
0.515" |
| Body Diameter |
0.225" |
0.237" |
0.225" |
| Lead Diameter |
0.041" |
0.032" |
0.032" |
| Resistance Range |
1 - 100M |
330K - 499M |
1 - 3M |
| Max Oper Voltage |
500V |
3000V |
1000V |
| 2 Watt |
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| Model |
RCR42 (5%) |
CMH-1 |
GS 3 |
| Construction |
Carbon Comp |
Metal Glaze |
Metal Glaze |
| Military Specification |
MIL-R-11 |
MIL-R-49462 |
No |
| Body Length |
0.688" |
0.400" |
0.515" |
| Body Diameter |
0.312" |
0.138" |
0.225" |
| Lead Diameter |
0.045" |
0.032" |
0.032" |
| Resistance Range |
10 - 100M |
330K - 392M |
1 - 3M |
| Max Oper Voltage |
500/750 V |
(P x R)1/2 |
1000V |
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