Fusible Resistors (FRN, FKN, FSQ)
Fusible resistor features best of both worlds.
Designers of small power supplies and battery chargers for consumer products can benefit from a fusible resistor with superior lightning strike and pulse abilities in a cost effective package.
DeMint Electronics offers a combination resistor/fuses series of metal/carbon film Fusible resistor (FRN), wirewound fuse resistor (FKN) and cement encased fusing resistors (FSQ). DeMint offers Fusible FRN series a low-cost alternative to traditional solutions for applications that require surge protection.
The robust ceramic encased cement resistor (FSQ) and wirewound resistor (FKN) are ideal for power supply applications across the telecomms, military and industrial markets which require a replacement for carbon composition resistors within the circuit design.
As part of the DeMint input protection range, this resistor provides a key fusible solution and is completely customisable to suit the individual application design requirements. Key design engineers with a need for a robust resistor, will find the FRN, FKN and FSQ series are a multifaceted product, providing comparable pulse performance with added fusing capabilities.
Our custom solutions are designed to address your need for technical and economic success in a timely manner.
Contact us with your specific needs.
Download complete PDF Fusible Resistors (FRN, FKN, FSQ).
- Low Cost
- Low Noise
- Reduced numbers of parts used in circuits
- Products with Pb-free Terminations and RoHS compliant
- Telecommunications
- Household appliances
- Inrush Pulse protection
- Lightning strike protection
- Input protection for small power supplies and battery chargers
| Specifications & Dimensions (Unit: mm) Thin-Film Fusible Resistor (FRN) | |||||||
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| Type | Rated Wattage | Dimension (mm) | Resistance Range | Dielectric Withstanding Voltage | |||
| L ± 1.5 | D ± 1 | H ± 3 | d ± 0.05 | ||||
| FRN | 1/4W 1/2W 1W 2W 3W |
6 6 9 11 15 |
2.3 2.3 3.0 4.0 5.0 |
26 26 26 26 35 |
0.40~0.50 0.50~0.55 0.50~0.55 0.75~0.80 0.75~0.80 |
0.22Ω~100KΩ 0.22Ω~100KΩ 0.22Ω~100KΩ 0.3Ω~100KΩ 0.3Ω~100KΩ |
300V 300V 350V 500V 500V |
| Specifications & Dimensions (Unit: mm) Wirewound Fuse Resistor (FKN) | |||||||
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| Type | Rated Wattage | Dimension (mm) | Resistance Range | Dielectric Withstanding Voltage | |||
| L ± 1.5 | D ± 1 | H ± 3 | d ± 0.05 | ||||
| FKN | 1W 2W 3W 5W 6W |
9 11 15 17 24 |
4.5 5.0 5.5 6.5 8.5 |
26 26 35 35 38 |
0.50~0.55 0.75~0.80 0.75~0.80 0.75~0.80 0.75~0.80 |
0.1Ω~22Ω 0.1Ω~60Ω 0.1Ω~100Ω 0.2Ω~200Ω 0.3Ω~250Ω |
500V 500V 500V 500V 500V |
| Specifications & Dimensions (Unit: mm) Cement Fusing Resistor (FSQ) | ||||||||
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| Type | Rated Wattage | Dimension (mm) | Resistance Range | Dielectric Withstanding Voltage | ||||
| L ± 1.5 | H ± 0.5 | W ± 0.5 | H ± 3 | d ± 0.05 | ||||
| FSQ | 2W 3W 5W 7W 10W |
18 22 22 35 48 |
7 8 9 9 9 |
7 8 10 10 10 |
35 35 35 35 35 |
0.50~0.55 0.75~0.80 0.75~0.80 0.75~0.80 0.75~0.80 |
0.1Ω~22Ω 0.1Ω~120Ω 0.2Ω~120Ω 0.3Ω~250Ω 0.3Ω~500Ω |
1000V 1000V 1000V 1000V 1000V |
| Electrical Characteristics (FRN, FKN, FSQ) | ||
| Test Items | Condition | Spec. |
| Operating Temp. | -30°C~155°C | |
| Resistance Temp. Coeff. | -30°C~150°C | ± 200PPM / °C |
| Short Time Overload | 2 times of rated voltage for 5 sec. | ± 2 % |
| Temp. Cycle | -30°C~85°C for 5 cycles | ± 1 % |
| Load Life | 25°C on-off cycle 1,000 hrs. | ± 5 % |
| Moisture-Proof Load Life | 40°C 95°C RH on-off cycle 1,000 hrs. | ± 5 % |
| Solder Pot | 270°C for 3 sec. | ± 1 % |
| Incombustibility | 16 times of rated wattage for 5 min. | not flamed |
| Fusing Characteristics (FRN, FKN, FSQ) | |
| POWER WATTAGE | FUSING TIME |
| 16 X Rated Wattage | Within 2 min |
| 24 X Rated Wattage | Within 1 min |
| 32 X Rated Wattage | Within 30 sec. |
| Order Codes (FRN, FKN, FSQ) | ||||||||||||||||||||||||||||||||
| FRN | 1/2W | 0.47R | J | TB | ||||||||||||||||||||||||||||
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