The ROP series cylindrical cement wire-wound resistors are high-reliability power resistors designed specifically for industrial electronic equipment, power systems, automated control equipment, and electronic control boards. The products utilize a flame-retardant ceramic tube structure and wire-wound resistor technology, ensuring stable electrical performance while possessing excellent insulation and moisture resistance.
As a professional wire wound resistor manufacturer providing industrial-grade solutions, this series of products is manufactured through a fully automated production process and a strict quality control system, meeting the stability, consistency, and safety requirements of equipment operating continuously for extended periods.
Its maximum withstand voltage of AC1000V makes it suitable for applications such as power protection, voltage division, current limiting, and industrial control circuits.

| Item | Specifications |
|---|---|
| Product Series | ROP Series |
| Product Type | Cylindrical Cement Wire Wound Resistor |
| Rated Power | 1W / 2W / 3W / 5W |
| Resistance Range (Wire Wound Type) | 0.1Ω~150Ω |
| Resistance Range (Power Film Type) | 48Ω~50KΩ |
| Resistance Tolerance | ±5% (J) |
| Temperature Coefficient | ±300ppm/℃ |
| Maximum Withstand Voltage | AC 1000V / 1 Minute |
| Insulation Resistance | ≥1000MΩ |
| Operating Voltage | 150V~350V |
| Operating Temperature | -55℃~+155℃ |
| Fire Resistance | Flameproof Construction |
| Damp Heat Life | 40℃ / 95%RH / 1000 Hours |
| Load Life | 70℃ / 1000 Hours |
| Package Type | Bulk / T/B / T/R |
Suitable for switching power supplies, industrial power modules, power protection circuits, and voltage divider circuits.
Widely used in PLC control systems, industrial control boards, and automated production equipment.
Suitable for motor controllers, drive modules, and power regulation circuits.
Can be used as current limiting, voltage dividing, and load control components in various electronic control systems.
Suitable for industrial electronic products requiring high insulation, high reliability, and long-term stable operation.