RSS Metal Oxide Film Resistors Flameproof Small Type:Features 1. High power, Small body size. 2. Electrical and mechanical stability and high reliability. 3. Nonflame painting, Solvent proof, resistant to heat & humidity. 4. Annual shift is low for the strengthened metal oxide film. 5. Low noise can produce high resistance values which 6. wire wound resistors can not reach.
RSS Metal Oxide Film Resistors Flameproof Small Type
Products | RSS Metal Oxide Film Resistors Flameproof Small Type |
Features | 1. High power, Small body size. 2. Electrical and mechanical stability and high reliability. 3. Nonflame painting, Solvent proof, resistant to heat & humidity. 4. Annual shift is low for the strengthened metal oxide film. 5. Low noise can produce high resistance values which 6. wire wound resistors can not reach. |
Electrical And Mechanical Performance of RSS Metal Oxide Film Resistors Flameproof Small Type:
Characteristics | Standards | Test Methods |
Resistance Tolerance | ±5%(J)or±2%(G) | . |
Resistance Temp. Coeff. | ±300 ppm/°C | -55*C ~ 155qC |
Power Rating Load | Surface temp. 275 °C Max.△R/R≤±1% | Rated voltage for 30 minutes |
Short Time Overload | ±2% | 2.5 times of rated voltage for 5 seconds.
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Dielectric Withstanding Voltage | No evidence of mechanical damage or insulation breakdown.
| Max. Working Voltage for 1 min. |
Insulation Resistance | 1.000MΩ | DC100V or 500V megger |
Terminal Strength | No evidence of mechanical damage. | < 1/2W:1 kg >1W：2kg |
Solder-ability | Minimum95%coverage | 235±5*C for 2 seconds |
Resistance to Soldering Heat | No evidence of mechanical damage.△R/R≤±1% | 270 ±5*0 for 10 ±1 seconds 350±10*C for 3.5 ±0.5 seconds |
Environmental Characteristics of RSS Metal Oxide Film Resistors Flameproof Small Type:
Characteristics | Standards | Test Methods |
Temp. Cycle | △ R/R≤±1% | -55°C( 30 min.) —► Room Temp.( 3 min.) —►+155°C(30 min.) —► Room Temp.( 3 min.)/( 5 cycles) |
Load Life | △R/R≤±5% | Rated power load 90 minutes ON 30 minutes OFF 70°C 1000 hours |
Moisture-proof Load Life | △R/R≤±5% | Rated power load 90 minutes ON 30 minutes OFF 40°C95%RH 500 hours |
Nonflammability | not flamed | 16 times of rated wattage for 5 min.
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Dimensions of RSS Metal Oxide Film Resistors Flameproof Small Type:
Rated Wattage | D±1 | L±1 | H±3 | d±0.1 | Resistance (Ω) | Max. Working Voltage | Max. Overload Voltage |
1/2W | 2.6±0.5 | 6.8 | 28 | 0.6 | 0.22~33K | 250V | 400V |
1W | 3.5 | 9 | 28 | 0.65 | 0.22~50K | 350V | 600V |
2W | 4.5 | 11 | 28 | 0.8 | 0.22〜50K | 350V | 600V |
3W | 5.0 | 15 | 28 | 0.8 | 0.22~50K | 350V | 600V |
5W | 8.5 | 24 | 38 | 0.8 | 0.22-100K | 500V | 800V |
6W | 8.5 | 32 | 33 | 0.8 | 0.22~150K | 500V | 800V |
7W | 8.5 | 41 | 38 | 0.8 | 0.22〜200K | 750V | 1000V |
10W | 8.5 | 53 | 38 | 0.8 | 0.22〜200K | 800V | 1500V |
Derating Curve of RSS Metal Oxide Film Resistors Flameproof Small Type:
For resistors operated in ambient temperatures above 70 ℃，power rating must be derated in accordance with the curve below.
Surface Temperature Rise of RSS Metal Oxide Film Resistors Flameproof Small Type:
