Ceramic Encased Wire Wound Resistor
Southern Group supplied wire wound resistor adopts ceramic casing, featuring outstanding insulating property. Besides, it helps to enhance the heat dissipation performance of the resistor due to the low-temperature property of the ceramic surface under high temperature condition.
Southern Group provides different powers of wire wound resistors, including 2W, 7W, 10W, etc. In addition, special designs of size, resistance, power and shape are also available based on clients’ requirements.
R27 Ceramic Encased Wire Wound Resistor Property| Item | Test Method | Requirement | |
| Resistance Series, Tolerance | E24 ±5% ±10% | ||
| Dielectric Strength | AC1500V: 1minute | AC1500V1 minute | No flashover or insulation breakdown |
| Solder Ability | 265 ±5℃, 2s+0.5s, immersion height: 1.5~2.0mm | 265 ±5℃, 2s+0.5s, 1.5~2.0mm | △R≤ ± (1%R+0.05Ω ) No visible damage. Area covered with new solder: >95%. |
| Terminal Strength | Axial tension: 20N for 10s±1s | 20N: 10s±1s | △R≤ ± (1%R+0.05Ω) No visible damage |
| Short Time Overload | 10x Rated power: 5s | 10x Rated power for 5s | △R≤ ± (1%R+0.05Ω) No visible damage |
| Temp.Coefficient of Resistor | ≤±250PPM/℃ | ||
| Resistance to Soldering Heat | 360℃±10℃, immersion height: 3~3.5mm | 350℃±10℃ 3~3.5mm | △R≤± (1%R+0.05Ω ) No visible damage |
| Vibration | Min{10-500HZ and 0.75mm, 98m/s²}; x, y, z: totally 6h | Min{10-500HZ and 0.75mm, 98m/s²}; x, y, z: totally 6h | △R≤± (1%R+0.05Ω ) No visible damage |
| Load Life | 1.5h on and 0.5h off: 1000h | 1.5h on and 0.5h off: 1000h | △R≤± (5%R+0.1 Ω ) R≥1GΩ |
| Moisture Resistance | 40℃ and RH=90-95%: 96h | 40℃ and RH 90-95%: 96h | △R≤± (5%R+0.1 Ω ) R≥100MΩ |
| Temperature Rise | △T≤250℃ | ||
Optional Types
- RX27-1
- RX27-1
- RX27-2
- RX27-2
| Type | Rated Power (W) | Resistance Range (Ω) | Dimensions (mm) | ||||
| A/B | C | Φ | h | ||||
| RX27-1-2 | RX27-2-2 | 2 | 0.15-200 | 6.4 ±1 | 17.5±1.2 | 0.8 | 1.5 |
| RX27-1-3 | RX27-2-3 | 3 | 0.20-390 | 8.0±1 | 22.0±1.5 | 0.8 | 1.5 |
| RX27-1-5 | RX27-2-5 | 5 | 0.24-680 | 9.5 ±1 | 22.0±1.5 | 0.8 | 1.5 |
| RX27-1-7 | RX27-2-7 | 7 | 0.33-500 | 9.5 ±1 | 35.0±1.5 | 0.8 | 3.0 |
| RX27-1-10 | RX27-2-10 | 10 | 0.51-2000 | 9.5 ±1 | 48.0±1.5 | 0.8 | 3.0 |
| RX27-1-15 | 15 | 1.00-2400 | 12.5±1.2 | 48.0±1.5 | 1.0 | ||
| RX27-1-20 | 20 | 1.00-3000 | 12.5±1.2 | 63.5 ±2.0 | 1.0 | ||
| Type | Rated Power (W) | Resistance Range (Ω) | Dimensions (mm) | ||||||
| L1 | L2 | L3 | L4 | H1 | H2 | t | |||
| RX27-1V-7 | 7 | 0.33-1500 | 47±2.0 | 8 | 4 | 5 | 1.5 | 11 | 0.5 |
| RX27-1V-10 | 10 | 0.51-2000 | 60±2.5 | 8 | 4 | 5 | 1.5 | 11 | 0.5 |
| RX27-1V-15 | 15 | 1.00-2400 | 61.5± 2.5 | 9 | 4.5 | 6.5 | 2.5 | 14 | 0.5 |
| RX27-1V-20 | 20 | 1.00-3000 | 77.0 ±3.0 | 9 | 4.5 | 6.5 | 2.5 | 14 | 0.55 |
| Type | Rated Power (W) | Resistance Range (Ω) | Dimensions | (mm) | ||||||
| L | I | B1/H1 | 82 | B3 | B4 | H2 | H3 | |||
| RX27-3A-3 | 3 | 0.20-390 | 24 ±1 | 12.5 | 9.0 ±1 | 5 | 1.4 | 1.6 | 10 | 23.5 |
| RX27-3A-5 | 5 | 0.24-680 | 27 ±1 | 15 | 9.5 ±1 | 5 | 1.4 | 1.6 | 10 | 24 |
| RX27-3A-7 | 7 | 0.33-500 | 35±1.5 | 22.5 | 9.5 ±1 | 5 | 1.4 | 1.6 | 10 | 24 |
| RX27-3A-10 | 10 | 0.51-2000 | 48 ±1.5 | 35 | 9.5 ±1 | 5 | 1.4 | 1.6 | 10 | 24 |
| RX27-3A-15 | 15 | 1.00-2400 | 48 ±1.5 | 32.5 | 12.5±1 | 10 | 2.7 | 3.0 | 17 | 34.6 |
| RX27-3A-20 | 20 | 1.00-3000 | 63±1.5 | 50.0 | 12.5±1 | 10 | 2.7 | 3.0 | 17 | 34.6 |
| Type | Rated Power (W) | Resistance Range (Ω) | Dimensions (mm) | |
| L | I | |||
| RX27-38-5 | 5 | 0.24-680 | 27±1.5 | 15±2 |
| RX27-3B-7 | 7 | 0.33-1200 | 35±1.5 | 22.5±2 |
| RX27-38-10 | 10 | 0.51-1800 | 48±1.5 | 35±2 |
| RX27-3B-15 | 15 | 1.0-2200 | 48 ±1.5 | 32.5±2 |
| RX27-38-20 | 20 | 1.0-2700 | 63.5±1.5 | 55±2 |
| Type | Rated Power (W) | Resistance Range (Ω) | Dimensions (mm) | |
| L | I | |||
| RX27-3C-15 | 15 | 1.0-2200 | 48.0±1.5 | 32.5±1.0 |
| RX27-3C-20 | 20 | 1.0-2700 | 63.5±1.5 | 50.0±1.0 |
| Type | Rated Power (W) | Resistance Range (Ω) | Dimension (mm) | ||||||||||
| L1 | L2 | L3 | B1-H1 | B2 | H3 | H4 | P1 | E | T1 | dl | |||
| RX27-4-10 | 10 | 0.51-2000 | 48.0 ±1.0 | 25±1.0 | 4.5 | 9.5±1.0 | 5 | 16.5 +0.5 -1.0 | 0.8 | 2.5 | 33.0-2 | 0.4 | 2.0 |
| RX27-4-15 | 15 | 1.00-2400 | 48.0 ±1.0 | 25±1.0 | 7.0 | 12.5±12 | 6 | 21.0 +2.0 -1.0 | 1.0 | 3.0 | 34.0-2 | 0.5 | 2.0 |
| RX27-4-20 | 20 | 1.00-3000 | 63.5 ±1.0 | 25±1.0 | 7.0 | 12.5±12 | 6 | 21.0 +2.0 -1.0 | 1.0 | 3.0 | 49.5-3 | O.5 | 2.5 |
| RX27-4-25 | 25 | 1.20-3600 | 63.5±1.0 | 25±1.0 | 8.0 | 16.0±12 | 7.5 | 29.0 +3.0 -1.5 | 1.0 | 3.5 | 46.5-3 | O.5 | 3.0 |
| RX27-4-30 | 30 | 1.50-4300 | 75.0±1.2 | 40±1.2 | 10.0 | 19.0±15 | 7.5 | 30.0 +3.0 -1.5 | 1.0 | 3.5 | 56.0-4 | O.5 | 3.0 |
| RX27-4-40 | 40 | 1.80-5600 | 90.0±2.5 | 40±2.5 | 10.0 | 19.0±15 | 7.5 | 30.0 +3.0 -1.5 | 1.0 | 3.5 | 71.0-4 | O.5 | 3.0 |
| Type | Rated Power (W) | Resistance Range (Ω) | Dimensions (mm) | |||
| L1 | D1 | Φd | B1 -H1 | |||
| RX27-4 HSHV-10 | 10 | 0.51-2000 | 48.0±1.0 | 25±1.0 | 4.5 | 9.5±1.0 |
| RX27-4 HSHV -15 | 15 | 0.51-2400 | 48.0±1.0 | 25±1.0 | 4.0 | 12.5±1.2 |
| RX27-4 HSHV -20 | 20 | 1.00-3000 | 63.5±1.0 | 25±1.0 | 4.0 | 12.5±1.2 |
| RX27-4 HSHV -25 | 25 | 1.20-3600 | 63.5±1.0 | 25±1.0 | 4.0 | 16.0±1.2 |
| RX27-4 HSHV -30 | 30 | 1.50-4300 | 75.0±1.0 | 40±1.2 | 4.0 | 19.0±1.2 |
| RX27-4 HSHV -40 | 40 | 1.80-5600 | 90.0 ±2.5 | 40±2.5 | 4.0 | 19.0±1.5 |
Rated power: 100W
Resistance range: (1Ω~20KΩ)
Resistance tolerance: ±5%;±10%
Rated power: 5W-20W
Resistance range: (0.5Ω~200K)
Resistance tolerance: ±5%-±10%
Rated power: 10W-20W
Resistance range: (2Ω~51KΩ)
Resistance tolerance: ±5%;±10%
| 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 |
| Type | Rated Power (W) | Resistance Range (Ω) | Dimensions (mm) | |||
| A | B | C | F | |||
| R6CW2 | 2 | 1.0-50 | 6±1 | 15±1 | 10±1 | 9±1 |
| RGCW3 | 3 | 1.0-50 | 6±1 | 15±1 | 13±1 | 9±1 |
| RQCW5 | 5 | 1.0-100 | 6±1 | 15±1 | 18 ±1 | 9±1 |
| Type | Rated Power (W) | Resistance Range(Ω) | Dimensions (mm) | ||||
| A | B | C | D | F | |||
| RGC22 | 2+2 | (0.1-1) x2 | 5±0.5 | 9±1 | 26±1 | 13 | 20±1 |
| RGC33 | 3+3 | (0.1-1) x2 | 5±0.5 | 13±1 | 26±1 | 13 | 20±1 |
| RGC55 | 5+5 | (0.1-1) x2 | 6±0.5 | 17±1 | 26±1 | 13 | 20±1 |
| Type | Rated Power (W) | Resistance Range(Ω) | Dimensions (mm) | ||||
| A | B | C | D | F | |||
| RGC2 | 2 | 0.1-1 | 5±0.5 | 9 ±1 | 14±1 | 13 | 9±1 |
| RGC3 | 3 | 0.1-1 | 5±0.5 | 13±1 | 14±1 | 13 | 9±1 |
| RGC5 | 5 | 0.1-1 | 5±0.5 | 17±1 | 14±1 | 13 | 9±1 |
| RGC10 | 10 | 0.1-1 | 5 ±0.5 | 17±1 | 26±1 | 13 | 20±1 |
Rated Power: 80W
Resistance Range: (2Ω~100KΩ)
Resistance Tolerance: ±5%-±10%
Rated power: 80W
Resistance: 1.4Ω±5%
RX27-Z
Rated Power: 15W
Resistance Range: (1Ω~24KΩ)
Resistance Tolerance: ±5%-±10%
Rated power: 50W
Resistance Range: 1Ω~200KΩ
Resistance Tolerance: ±5%-±10%
| NO. | Item | Test Method | Characteristics |
| 1. | Rated Power | 5W | |
| 2. | Operating Temperature | -55℃>-275℃ | |
| 3 | Temperature Coefficient | ≤±500PPM/℃ | |
| 4. | Resistance Tolerance | ±1%,±5%,±10% | |
| 5 | Short Time Overload | 2.5x rated power: 5 seconds | △R±(0.5%R+0.05Ω ) |
| 6 | Dielectric Strength | 1500VAC: 60Sec. (Terminal parallel to resistor Body) | △R±(0.5%R+0.05Ω ) No mechanical damage, flashover or insulation breakdown. |
| 7 | Load Life | 25℃, rated power: 1000h (1.5h-on and 0.5h off mode) | △R±(1%R+0.05Ω ) No mechanical damage. |
| 8 | Load Life to Humidity | 40℃±2 , 90-95%RH: 96h | △R±(1.5%R+0.05Ω ) No mechanical damage. |
Derating Curve
Shown above are some of our wire wound resistors with wide range of specifications for selection. Seen below are other types of resistors we provide. Our company is a leading passive electronic component manufacturer, and we have thousands of coil winding machines for the production of resistors, inductors and transformers. If you have special demands for electronic components, please let us know your needs and we can provide custom made products for you.
