Carbon Film Fixed Resistors
Dersonic's Carbon Film Fixed Resistors (CF series) offer high quality and reliability, meeting the performance requirements of CNS 2320 standards. Available in standard tolerances of 2% and 5%, these resistors are suitable for a wide range of applications due to their high resistance range (1-10M) and various packaging options including bulk, tape, and formed lead configurations. The resistors are constructed with a high-conductivity ceramic core, a stable carbon film, and a high-reliability end cap, coated with an insulative and solvent-proof epoxy resin. Small-sized models utilize selected high-performance ceramics, making them ideal for compact electronic devices.
Product Attributes
- Brand: Dersonic
- Origin: China
- Material: Carbon Film
- Certifications: CNS 2320
- Packaging: Bulk, Tape, Formed Leads
Technical Specifications
| Item | Power Rate | Max Working Voltage | Max Overload Voltage | Max Pulse Overload Voltage | Dielectric Withstanding Voltage | Resistance Tolerance | Resistance Range () |
| CF (1/8W) | 0.125W | 200V | 400V | 500V | 300V (AC) | J (5%) | 1.0 - 4.7M |
| CF (1/4W) | 0.25W | 250V | 500V | 600V | 350V (AC) | J (5%) | 1.0 - 4.7M |
| CF (1/4WS) | 0.25W | 250V | 500V | 600V | 350V (AC) | J (5%) | 1.0 - 4.7M |
| CF (1/2W) | 0.5W | 350V | 700V | 1000V | 350V (AC) | J (5%) | 1.0 - 10M |
| CF (1/2WS) | 0.5W | 350V | 700V | 1000V | 350V (AC) | J (5%) | 1.0 - 10M |
| CF (1W) | 1W | 500V | 1000V | 1500V | 350V (AC) | J (5%) | 1.0 - 10M |
| CF (1WS) | 1W | 500V | 1000V | 1500V | 350V (AC) | J (5%) | 1.0 - 10M |
| CF (2W) | 2W | 750V | 1500V | 2000V | 350V (AC) | J (5%) | 1.0 - 4.7M |
| CF (2WS) | 2W | 750V | 1500V | 2000V | 350V (AC) | J (5%) | 1.0 - 4.7M |
| CF (3W) | 3W | 500V | 1000V | 1500V | 350V (AC) | J (5%) | 1.0 - 4.7M |
| CF (3WS) | 3W | 500V | 1000V | 1500V | 350V (AC) | J (5%) | 1.0 - 4.7M |
| CF (5W) | 5W | 750V | 1500V | 2000V | 350V (AC) | J (5%) | 1.0 - 4.7M |
| CF (5WS) | 5W | 750V | 1500V | 2000V | 350V (AC) | J (5%) | 1.0 - 4.7M |
| Characteristic | Specification | Test Method |
| DC Resistance | J (5%), G (2%) | Room Temp 25 |
| Temperature Coefficient (T.C.R.) | | Test resistance at room temp, then at room temp + 100 |
| 4.7-910: 300 PPM/ |
| 1K-62K: 500 PPM/ |
| 68K-200K: 700 PPM/ |
| > 200K: 1000 PPM/ |
| Temperature Coefficient (T.C.R.) | | Test resistance at room temp, then at room temp + 100 |
| 4.7-51K: 300 PPM/ |
| 56K-430K: 500 PPM/ |
| 470K-910K: 700 PPM/ |
| > 1M: 1000 PPM/ |
| (Applies to 1/4W, 1/2W, 1/2WS, 1W, 1WS, 2W, 2WS, 3W, 3WS, 5W, 5WS) |
| Load Life in Humidity | | 40, 90-95% RH, 1000 hrs |
| Load Life | | 70, 1000 hrs |
| Short Time Overload | (1%+0.05) | 2.5 times rated voltage, 5 sec |
| Insulation Resistance | 1000M | V-block test |
| Dielectric Withstanding Voltage | (0.5%+0.05) | Voltage specified in rating table |
| Temperature Cycling | (1%+0.05) | -25 ~ 85, 5 cycles |
| Resistance to Soldering Heat | (1%+0.05) | 2355, 5 sec |
| Solderability | 90% coverage minimum | 2355, 5 sec |
| Terminal Strength (Tensile) | Leads no damage | Direct load twist test |
| Part No. | L0.5 (mm) | D0.5 (mm) | d0.05 (mm) | H2.0 (mm) |
| 0.125W (1/8W) | 3.5 | 1.5 | 0.41 | 28 |
| 0.25WS (1/4WS) | 3.5 | 1.5 | 0.41 | 28 |
| 0.25W (1/4W) | 6.0 | 2.3 | 0.41 | 27 |
| 0.5WS (1/2WS) | 6.0 | 2.3 | 0.41 | 27 |
| 0.5W (1/2W) | 9.0 | 3.2 | 0.50 | 26 |
| 1WS | 9.0 | 3.2 | 0.50 | 26 |
| 1W | 11.0 | 4.0 | 0.65 | 25 |
| 2WS | 11.0 | 4.0 | 0.65 | 25 |
| 2W | 15.0 | 5.0 | 0.65 | 22 |
| 3WS | 15.0 | 5.0 | 0.65 | 22 |
| 3W | 17.0 | 6.0 | 0.70 | 34 |
| 5WS | 17.0 | 6.0 | 0.70 | 34 |
| 5W | 24.0 | 8.0 | 0.70 | 30 |
| 7WS | 24.0 | 8.0 | 0.70 | 30 |
