Features - Suitable for protecting circuit boards.
- Flameproof construction in a ceramic case, resistant to humidity
and insulation.
- In high resistance value, the winding cores are replaced by power
film cores.
- Excellent anti-surge characteristics and accurate fusibility.
Product Positioning and Core Applications The SQF series thermally fusible cement resistor is a functional
component integrating power resistance, thermal fusibility
protection, and circuit safety protection. The product adopts a
flame-retardant ceramic shell and winding structure design,
providing stable resistance control under normal operating
conditions. When abnormal overload or temperature rise reaches the
set operating temperature, it can achieve rapid fusing protection,
effectively protecting PCBs, power modules, and electronic
equipment. As a professional fusible resistor manufacturer, this series
combines the dual functions of a flameproof fusible resistor and a
circuit protection resistor, and is widely used in industrial
control, power supply equipment, home appliances, and electronic
control systems. Product Parameter Table | Item | Specifications |
|---|
| Product Type | Thermal Fuse Cement Resistor | | Structure Form | Ceramic Cement Wire Wound | | Resistance Range | 0.1Ω – 50KΩ | | Resistance Tolerance | ±5% (J) | | Temperature Coefficient | 300ppm/℃, 600ppm/℃ | | Rated Operating Temperature | 132℃ / 145℃ / 185℃ | | Rated Current | 3A / 5A / 10A | | Insulation Resistance | ≥1000MΩ @ DC500V | | Withstand Voltage | AC1000V / 1min | | Surface Temperature | ≤130℃ | | Short-Time Overload Capacity | 10 times rated power for 5 seconds | | Fuse Overload Capacity | 16 times rated power for 5 minutes | | Operating Temperature | -25℃ ～ +155℃ (Derating) |
Application Areas Power Supply and Power Electronic Equipment Used for overload and temperature rise protection in switching
power supplies, AC/DC power modules, UPS systems, and power
protection circuits. Industrial Automation Control Systems Suitable for PLC controllers, industrial drives, frequency
converters, and control boards, and other electronic systems
requiring safety protection. Home Appliances and Consumer Electronics Widely used in air conditioners, induction cookers, washing
machines, televisions, and smart home appliances. Communication and Network Equipment Used for circuit protection design in communication power supplies,
network switching equipment, and data transmission systems. PCB Circuit Board Protection As a high-reliability fusible wire wound resistor supplier
solution, it can achieve accurate fuse protection under abnormal
operating conditions, improving system safety.
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