The RGG series (equivalent to RX27-5 type) is a high-power, ceramic-encased wirewound resistor designed for demanding industrial and commercial applications. Its non-flammable ceramic casing provides excellent heat dissipation, flame retardancy, and environmental protection, making it ideal for high-temperature and high-surge conditions.
■ Advantages
The RGG series ceramic encased wire wound resistor is engineered for applications where standard resistors fail. Its robust ceramic encasement provides a critical combination of power handling, safety, and durability that is essential for industrial, automotive, and high-reliability systems.
1. Superior Power Handling and Heat Dissipation
High Power Rating: Designed for 2W to 20W power dissipation, effectively managing significant energy loads.
Excellent Heat Dissipation: The ceramic casing acts as a heat sink, rapidly transferring heat away from the resistive wire element. This prevents overheating and maintains stability at high power levels, ensuring a long service life.
2. Exceptional Reliability and Flame Retardancy
Non-Flammable Safety: The ceramic material is inherently non-flammable (UL 94V-0 compliant), making these resistors ideal for safety-critical applications. They will not support combustion, even under severe overload conditions.
High-Temperature Operation: Capable of operating at ambient temperatures up to +275°C, far exceeding the limits of plastic-coated resistors.
3. Outstanding Surge and Pulse Withstand Capability
Robust Construction: The wirewound element within a sturdy ceramic core is specifically designed to withstand high-energy transient surges and short-duration pulses, such as those encountered in motor start-ups, inverter circuits, and power supply inrush currents.
4. Maximum Environmental Protection
Hermetically Sealed Options: Many models are effectively sealed against moisture, dust, and corrosive gases. This provides outstanding resistance to harsh environments, including those found in industrial automation, automotive under-the-hood applications, and outdoor equipment.
Mechanical Strength: The rigid ceramic casing offers superior resistance to vibration, shock, and physical damage compared to molded components.
5. Stable Performance Under Stress
Low Inductance Options: Ceramic encased wire wound resistoravailable with specialized winding techniques to minimize inherent inductance (Ayrton-Perry winding), making them suitable for AC and pulse applications where inductance must be controlled.
| Type | Rated Power (W) | Resistance range (Ω) | Dimensions (mm) | ||||
| A | B | C | E | D | |||
| RGG2 | 2 | 0.22-270 | 11±1 | 7±1 | 20±1 | 5±1 | 0.8 |
| RGG3 | 3 | 0.27-680 | 12±1 | 8±1 | 25±1 | 5 ±1 | 0.8 |
| RGG5 | 5 | 0.27-680 | 13±1 | 9±1 | 26±1 | 5±1 | 0.8 |
| RGG7 | 7 | 0.68-1200 | 13±1.5 | 9±1 | 38.5±1.5 | 5±1 | 0.8 |
| RGG10 | 10 | 1.0-1800 | 16±1.5 | 13±1 | 35±1.5 | 7.5±1 | 0.8 |
| RGG20 | 20 | 0.2-2000 | 20±1.5 | 9±1 | 50±1.5 | 10±1 | 0.8 |
■ RX27 Ceramic Encased Wire Wound Resistors Characteristics
| Item | Tested | Requirement |
| Resistance series tolerance | E24 ±5% ±10% | |
| Dieletirc strength | AC1500V1minute | No flashover insulation breakdown |
| Solder ability | 265±5℃, 2s+0.5s, 1.5~2.0mm | △R≤±(1%R+0.05Ω), No damage Covered with new solder by95% |
| Terminal strength | 20N 10s±1s | △R≤±(1%R+0.05Ω), No damage |
| Short time overload | 10x Rated power 5s | △R≤±(1%R+0.05Ω), No damage |
| Temp.coefficient | ≤±250PPM/℃ | |
| Resistance soldering heat | 350℃±10℃, 3~3.5mm | △R≤±(1%R+0.05Ω), No damage |
| Vibration | 10~500Hz, 0.75mm, or 98m/s² X、y、zAll 6h | △R≤±(1%R+0.05Ω), No damage |
| Load life | 1.5h on 0.5h off 1000h | △R≤±(5%R+0.1Ω), R≥1Go |
| Moisture Resistance | 40℃ RH 90~95% 96h | △R≤±(5%R+0.1Ω), R≥100MΩ |
| Temperature Rise | △T≤250℃ |
■ Derating Curve
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No. 6, Xinxin Intelligent Industrial Park，Changzhou, Jiangsu
Changzhou Southern Electronic Element Factory Co., Ltd. is located in the city of Changzhou, which has a long history in Jiangsu Province. It is situated in the most active economic area in Yangtze River Delta Centre. The transport is very convenient. Expressway, Fast railways run though it. And it only takes one and half hours to reach Shanghai or Nanjing city. Airplane from here is through to major cities in China.
Changzhou Southern Electronic Element Factory Co., Ltd. was founded in 1989. After several years' development and effort, it has invested and opened up three subsidiary companies, in Yancheng city, Huai'an city in Jiangsu Province, and Lang'xi City in Anhui Province respectively.
