Product Overview
The Low Power Type Resistors, specifically the Coat-Insulated Fixed Carbon Film Resistors (CF series), are general-purpose, lead-type resistors designed for automatic insertion and available in various forming types. They offer superior pulse resistance compared to chip resistors of the same power rating and include a compact 1/4W option (CFS 1/4). These resistors comply with EU-RoHS requirements and are suitable for a wide range of electronic applications. For critical applications such as automotive, medical, and aerospace equipment, direct contact with the company is required due to the potential for severe consequences in case of malfunction.
Product Attributes
- Product Type: Low Power Type Resistors
- Series: Carbon Film (CF)
- Construction: Coat-Insulated Fixed Carbon Film Resistors
- Coating Color: CFS1/4 - Ivory, Others - Venetian Red
- Marking: Color code
- Certifications: EU-RoHS compliant
- Origin: Not specified
- Brand: KOA (implied by www.koaglobal.com)
Technical Specifications
| Type | Dimensions (mm) L | Dimensions (mm) C Max. | Dimensions (mm) D | Dimensions (mm) d (Nominal) | Weight (g) (1000pcs) | Reference Standards | Power Rating | Resistance Range () (E24) | T.C.R. (10-6/K) | Max. Working Voltage (V) | Max. Overload Voltage (V) | Dielectric Withstanding Voltage (V) | Taping & Q'ty/AMMO (pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CFS1/4 | 3.20.2 | 3.4 | 1.7 +0.2 0.1 | 0.45 | 80 | IEC 60115-2, JIS C 5201-2, EIAJ RC-2136 | 0.25W | 10330k (G: 2%), 2.21M (J: 5%) | +350-450 (G), 0-700 (J) | 250 | 500 | 300 | T26A: 5,000, T52A: 3,000 |
| CF1/4 | 6.10.5 | 7.1 | 2.30.3 | 0.6 | 160 | IEC 60115-2, JIS C 5201-2, EIAJ RC-2136 | 0.25W | 101M (G: 2%), 2.25.1M (J: 5%) | 0-1000 (G), 0-1300 (J) | 300 | 600 | 500 | 2,000 |
| CFS1/2 | 6.30.5 | 7.1 | 2.850.3 | 0.6 | 290 | IEC 60115-2, JIS C 5201-2, EIAJ RC-2136 | 0.5W | 1.05.1M (G: 2%), 1.091k (J: 5%) | +350-450 (G), 0-700 (J) | 350 | 700 | 700 | 2,000 |
| CFB1/2 | 9.01.0 | 11.0 | 3.50.5 | 0.7 | 520 | IEC 60115-2, JIS C 5201-2, EIAJ RC-2136 | 0.5W | 2.25.1M (G: 2%), 2.2100k (J: 5%) | +350-450 (G), 0-700 (J) | 400 | 800 | - | - |
Rated Ambient Temperature: +70
Operating Temperature Range: -55+155
Rated voltage: Power RatingResistance value or Max. working voltage, whichever is lower.
Performance
| Test Items | Performance Requirements R0.05 | Test Methods | Limit | Typical |
|---|---|---|---|---|
| Resistance | Within specified tolerance | Measuring points are at 10mm1mm from the end cap. | ||
| T.C.R. | Within specified T.C.R. | +25/125 | ||
| Overload (Short time) | 1 | Rated voltage2.5 or Max. overload vol., whichever is lower, for 5s. | 0.5 | |
| Resistance to soldering heat | 1 | 2605, 10s1s | 0.5 | |
| Terminal strength | No lead-coming off and loose terminals | Twist 360, 5 times | ||
| Rapid change of temperature | 1 | 5530min./12530min.5 cycles | 0.5 | |
| Moisture resistance | 5 | 402, 90%95%RH, 1000h (1.5h ON/0.5h OFF cycle) | 2.5 | |
| Endurance at 70 | 3 | 702, 1000h (1.5h ON/0.5h OFF cycle) | 1.5 |
Precautions for Use
Ionic impurities such as flux etc. that are attached to these products or those mounted onto a PCB, negatively affect their moisture resistance, corrosion resistance, etc. The flux may contain ionic substances like chlorine, acid, etc. Please wash them to get rid of these ionic substances, especially when using lead-free solder that may contain much of the said substances for improving a wetting characteristic. Using RMA solder or RMA flux, or well-washing is needed. Also, attaching ionic substances such as perspiration, salt etc. by storage environments or mounting conditions/environments negatively affects their moisture resistance, corrosion resistance etc. Please wash them to remove the ionic substances when they are polluted.
2410121646_KOA-CFS1-4CT26A101J_C367443.pdf
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