Carbon Resistors

GENERAL RESISTORS INDEX
CR Series - Carbon Resistors
PGM Series - Light Dependent Resistor (LDR), Photo Resistors (CDS)
FRN, FKN, FSQ Series - Metal Film, Wirewound, Cement Fusible Resistors
SQP, SQM, SQT, SQH, SQZ Series - Non-Corrosive Cement Resistors
BWW Series - High Precision Wirewound Axial Moulded Resistors
KNP-VE Series - Vitreous Enamel Coated Wirewound Resistors
KNP, KNPN Series - Wirewound Low-Inductance Resistors
ZO, JW Series - Zero Ohm and Jumper Wire Resistors
CCR Series - Carbon Composition Resistors
FKU, FRU Series - Cement Resistors with Thermal Cut-offs
MF Series - Metal Film Precision Resistors
RSS, RSN Series - Metal Oxide Resistors
RCR Series - Anti-Surge Resistors
RESISTORS - TECHNICAL STANDARDS AND USAGE METHODS
Resistor Precaution Usage
Resistor Forming and Dimensions
Glossary - Terminology of Resistors
Marking System - Resistor Color Code

CR Series are the earliest and a still popular type made by breaking down hydrocarbon gases at high temperature in a vacuum to form a carbonic deposit on the surface of a cylindrical substrate. Trimming to value is accomplished by the cutting of spiral grooves. The material is painted on the substrate in a spiral pattern and cured at a moderately elevated temperature. Token offers competitive prices and widely used in the electronics, and consumer electrical industries.

General Specifications

Type RD	Power Rating		Dimension (mm)				Maximum Working Voltage	Maximum Overload Voltage	Resistance Tolerance
Type RD	RD	RDS	L	D	H	d±0.05	Maximum Working Voltage	Maximum Overload Voltage	± 2%(G)	± 5%(J)
CR-12	1/8 W	.	3.2±0.2	1.5±0.2	26±1	0.40~0.45	200	400	10Ω-470K	1Ω-4.7M
CR-16	1/6 W	1/4 W	3.2±0.2	1.5±0.2	26±1	0.40~0.45	200	400	1Ω-10M	0.5Ω-22M
CR-25	1/4 W	1/2 W	6.2±0.5	2.3±0.3	26±1	0.40~0.50	250	500	1Ω-10M	0.5Ω-22M
CR-33	1/3 W	1/2 W	8.5±0.5	2.8±0.3	26±1	0.50~0.55	250	500	1Ω-10M	0.5Ω-22M
CR-50	1/2 W	1 W	9.0±0.5	3.0±0.5	26±1	0.50~0.55	350	700	1Ω-10M	0.5Ω-22M
CR-100	1 W	2 W	11±1.0	4.0±0.5	35±3	0.75~0.80	500	1000	1Ω-10M	0.5Ω-22M
CR-200	2 W	3 W	15±1.0	5.0±0.5	35±3	0.75~0.80	500	1000	1Ω-10M	0.5Ω-22M
CR-300	3 W	5 W	17±1.0	6.0±0.5	35±3	0.75~0.80	500	1000	1Ω-10M	0.5Ω-22M

Electrical Performance

Test Items	Condition	Spec
Short Time Over Load	2.5 Times of rated voltage for 5sec.	± 1%
Load Life	70 °C on-off cycle 1,000hrs.	± 5%
Moisture-Proof Load Life	40 °C 95% RH on-off cycle 1,000hrs	± 5%
Soldering After Resistance	350 °C for 3sec.	± 0.5%
Temperature Cycle	-30 °C~85 °C 5cycles	± 2%
Resistance Temperature Coefficient	1Ω~22KΩ 22KΩ~510KΩ 510KΩ~1MΩ 1MΩ~2.2MΩ 2.2MΩ~5.1MΩ	± 300PPM / °C ± 450PPM / °C ± 800PPM / °C ± 1000PPM / °C ± 1400PPM / °C

How to Order

CR-12	0.125W	470KR	J	TB

Product type	Rated Power (W)	Resistance Value (Ω)	Resistance Tolerance	Packaging

- To Top Page

Direct Electronics Tech. Co., Ltd.
Taiwan Tel:+886-2-29810109 Fax:+886-2-29887487
China Tel:+86-755-26055363 Fax:+86-755-26055365