Product Overview
This product catalog details Low Power Type Resistors, specifically Carbon Film resistors. These general-purpose, lead-type resistors are designed for automatic insertion and come in various forming types. They offer superior pulse resistance compared to chip resistors of the same power rating and are EU RoHS compliant. Available in compact 1/4W sizes (CFS 1/4), these resistors are suitable for a wide range of applications. However, for critical applications involving human safety or significant potential loss, such as automotive, medical, and aerospace equipment, direct contact with the company is mandatory prior to use.
Product Attributes
- Brand: KOA (implied by www.koaglobal.com)
- Type: Carbon Film Resistors
- Certifications: EU RoHS compliant
- Coating Color: CFS1/4 - Ivory, Others - Venetian Red
- Marking: Color code
Technical Specifications
| Model | Power Rating | Resistance Range () E24 | T.C.R. (10-6/K) | Max. Working Voltage (V) | Max. Overload Voltage (V) | Dielectric Withstanding Voltage (V) | Weight (g/1000pcs) |
|---|---|---|---|---|---|---|---|
| CFS1/4 | 0.25W | 10330k (G: 2%) 2.21M (J: 5%) | +350-450 (2.247k) 0-700 (51k100k) 0-1000 (110k330k) 0-1300 (360k1M) | 250 | 500 | 300 | 80 |
| CF1/4 | 0.25W | 101M (G: 2%) 2.25.1M (J: 5%) | +350-450 (2.2100k) 0-700 (110k330k) 0-1000 (360k1M) 0-1300 (1.1M5.1M) | 300 | 600 | 500 | 160 |
| CFS1/2 | 0.5W | 1.05.1M (G: 2%) 1.091k (J: 5%) | +350-450 (1.091k) 0-700 (100k1M) 0-1000 (1.1M2.2M) 0-1300 (2.4M5.1M) | 350 | 700 | 700 | 290 |
| CFB1/2 | 0.5W | 2.25.1M (G: 2%) 2.2100k (J: 5%) | +350-450 (2.2100k) 0-700 (110k1M) 0-1000 (1.1M2.2M) 0-1300 (2.4M5.1M) | 400 | 800 | - | 520 |
| Model | Dimensions (mm) | Lead Wire Diameter (d Nominal) | Taping & Forming | Packaging (pcs/AMMO) |
|---|---|---|---|---|
| L 0.2 / C Max. / D 0.3 | (Nominal) | |||
| CFS1/4 | 3.2 0.2 / 3.4 / 1.7 +0.2 0.1 | 0.45 | T26A, T52A (5,000 pcs) U Forming (M5F) | 5,000 |
| CF1/4 | 6.1 0.5 / 7.1 / 2.3 0.3 | 0.6 | T26A, T52A (2,000 pcs) U Forming (M10H, M12.5H) M Forming (M5, M10, M12.5) | 2,000 |
| CFS1/2 | 6.3 0.5 / 7.1 / 2.85 0.3 | 0.6 | Axial Taping (2,000 pcs) U Forming (M10H) M Forming (M10) | 2,000 |
| CFB1/2 | 9.0 1.0 / 11.0 / 3.5 0.5 | 0.7 | Axial Taping (Custom-made) M Forming (M12.5K) | - |
| Test Item | Performance Requirements (Limit) | Test Method |
|---|---|---|
| Resistance | Within specified tolerance | Measuring points are at 10mm1mm from the end cap. |
| T.C.R. | Within specified T.C.R. | Room temperature100 |
| Overload (Short time) | 1% (Typical 0.5%) | Rated voltage2.5 or Max. overload vol., whichever is lower, for 5s. |
| Resistance to soldering heat | 1% (Typical 0.5%) | 2605, 10s1s |
| Terminal strength | No lead-coming off and loose terminals | Twist 360, 5 times |
| Rapid change of temperature | 1% (Typical 0.5%) | -5530min./12530min.5 cycles |
| Moisture resistance | 5% (Typical 2.5%) | 402, 90%95%RH, 1000h (1.5h ON/0.5h OFF cycle) |
| Endurance at 70 | 3% (Typical 1.5%) | 702, 1000h (1.5h ON/0.5h OFF cycle) |
Reference Standards: IEC 60115-2, JIS C 5201-2, EIAJ RC-2136
Operating Temperature Range: -55+155
Rated Ambient Temperature: +70
Environmental Considerations: For details on environmental hazardous materials beyond EU-RoHS, please contact the company. Cleaning is recommended to remove ionic impurities from flux, perspiration, or salt, which can affect moisture and corrosion resistance.
2410121646_KOA-CF1-4CT52A182J_C719289.pdf
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