|
| Brand Name: | HUAXING |
| Model Number: | RX27-7B |
| MOQ: | 1000 |
| Payment Terms: | T/T |
RX27-7B Ceramic-housed wirewound resistor
Product Introduction:
Size:
| specifications and models | rated power(W) | resistance range(Ω) | Size (mm) | |||
| W±0.5 | K±2 | L±2 | I±2 | |||
| RX27-7B-10W | 10 | 1.5-100K | 4 | 4.5 | 48.5 | 31 |
| RX27-7B-20W | 20 | 1.5-100K | 4 | 4.5 | 63.5 | 32.5 |
Key Test Items:
| Test Items | Test Conditions | Performance Requirements | Test Standards |
| Voltage withstand capability | Voltage: 1000Vac, 1 minute, V-shaped block method | No breakdown, arcing | GB/T 5729-1985 Section 4.7 |
| Resistance value Variation with temperature | Lower category temperature: (-55±3)°C Upper category temperature: (+155±2)°C |
10Ω: ±250ppm/°C 5-10Ω: ±500ppm/°C ≤5Ω: No specified requirements |
GB/T 5729-1985 Section 4.8 |
| Overload capacity | Load with 10 times the rated power for 5 seconds | ΔR ≤ ±(2%R + 0.1Ω) | GB/T 5732-1985 Section 2.3.4 |
| Lead strength | Tension: 20N, 10 seconds | ΔR ≤ ±(1%R + 0.05Ω) | GB/T 2423.29-1982 |
| Rapid temperature changes | Temperature range: (-55 to +125)°C, 5 cycles | ΔR ≤ ±(2%R + 0.1Ω) | GB/T 2423.22-1981 |
| 70°C Durability | Ambient temperature: (70±2)°C, rated power, 1.5 hours powered on; 0.5 hours powered off, 1000 hours | ΔR ≤ ±(10%R + 0.1Ω) | GB/T 5729-1985 Section 4.25.1 |
| Maximum category temperature Durability | Ambient temperature: 155°C, 58.5% of rated power, 1.5 hours powered on; 0.5 hours powered off, 1000 hours | ΔR ≤ ±(5%R + 0.1Ω) Insulation resistance ≥ 1GΩ |
GB/T 5729-1985 Section 4.25.3 |
| Accidental overload test (Flame retardancy) | Power: 5 times; 10 times; 16 times rated power, time: 5 minutes (or until open circuit) | No visible flame or burning phenomena | SJ 3272-1990 Section 4.2.2 |
Power dissipation curve
Ordering Example:
Model Number :RX27-7B
Rated Power:10W
Nominal Resistance:10Ω
Resistance Tolerance:±5%
Quantity:1000 pieces
|
|
| Brand Name: | HUAXING |
| Model Number: | RX27-7B |
| MOQ: | 1000 |
| Payment Terms: | T/T |
RX27-7B Ceramic-housed wirewound resistor
Product Introduction:
Size:
| specifications and models | rated power(W) | resistance range(Ω) | Size (mm) | |||
| W±0.5 | K±2 | L±2 | I±2 | |||
| RX27-7B-10W | 10 | 1.5-100K | 4 | 4.5 | 48.5 | 31 |
| RX27-7B-20W | 20 | 1.5-100K | 4 | 4.5 | 63.5 | 32.5 |
Key Test Items:
| Test Items | Test Conditions | Performance Requirements | Test Standards |
| Voltage withstand capability | Voltage: 1000Vac, 1 minute, V-shaped block method | No breakdown, arcing | GB/T 5729-1985 Section 4.7 |
| Resistance value Variation with temperature | Lower category temperature: (-55±3)°C Upper category temperature: (+155±2)°C |
10Ω: ±250ppm/°C 5-10Ω: ±500ppm/°C ≤5Ω: No specified requirements |
GB/T 5729-1985 Section 4.8 |
| Overload capacity | Load with 10 times the rated power for 5 seconds | ΔR ≤ ±(2%R + 0.1Ω) | GB/T 5732-1985 Section 2.3.4 |
| Lead strength | Tension: 20N, 10 seconds | ΔR ≤ ±(1%R + 0.05Ω) | GB/T 2423.29-1982 |
| Rapid temperature changes | Temperature range: (-55 to +125)°C, 5 cycles | ΔR ≤ ±(2%R + 0.1Ω) | GB/T 2423.22-1981 |
| 70°C Durability | Ambient temperature: (70±2)°C, rated power, 1.5 hours powered on; 0.5 hours powered off, 1000 hours | ΔR ≤ ±(10%R + 0.1Ω) | GB/T 5729-1985 Section 4.25.1 |
| Maximum category temperature Durability | Ambient temperature: 155°C, 58.5% of rated power, 1.5 hours powered on; 0.5 hours powered off, 1000 hours | ΔR ≤ ±(5%R + 0.1Ω) Insulation resistance ≥ 1GΩ |
GB/T 5729-1985 Section 4.25.3 |
| Accidental overload test (Flame retardancy) | Power: 5 times; 10 times; 16 times rated power, time: 5 minutes (or until open circuit) | No visible flame or burning phenomena | SJ 3272-1990 Section 4.2.2 |
Power dissipation curve
Ordering Example:
Model Number :RX27-7B
Rated Power:10W
Nominal Resistance:10Ω
Resistance Tolerance:±5%
Quantity:1000 pieces
