NRSN Anti-Pulse Non-Inductive Resistors Features: 1.Excellent pulse characteristics. 2.Flameproof painting, resistant to heat & solvents. 3.Very low inductance ( less than 1 H ).
NRSN Anti-Pulse Non-Inductive Resistors
Products | NRSN Anti-Pulse Non-Inductive Resistors |
Features | 1.Excellent pulse characteristics. 2.Flameproof painting, resistant to heat & solvents. 3.Very low inductance ( less than 1 H ). |
Electrical And Mechanical Performance of NRSN Anti-Pulse Non-Inductive Resistors:
Characteristics | Standards | Test Methods |
Resistance Tolerance | ±5%(J)or ±2%(G) | - |
Resistance Temp. Coeff. | ±300 ppm/°C | -55°C~155°C |
Power Rating Load | Surface temp. 235°C Max.△R/R^±1% | Rated voltage for 30 minutes |
Short Time Overload | ±1% |
2.5 times of rated voltage for 5 seconds.
|
Dielectric Withstanding Voltage | No evidence of mechanical damage or insulation breakdown.
| Max. Working Voltage for 1 min. |
Insulation Resistance | 1.000MQ | DC 100V megger |
Terminal Strength | No evidence of mechanical damage. | < 1/2W:1 kg > 1W: 2 kg |
Solder-ability | Minimum95%coverage | 235±5°C for 2 seconds |
Resistance to Soldering Heat | No evidence of mechanical damage.△R/R ± 1% | 270±5°C for 10 ± 1 seconds 350±10°C for 3.5 ±0.5 seconds |
Environmental Characteristics of NRSN Anti-Pulse Non-Inductive Resistors:
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. |
Dimensions of NRSN Anti-Pulse Non-Inductive Resistors:
Rated Wattage | D±1 | L±1 | H±3 | d±0.1 | Resistance Range(Q) | Max. Working Voltage | Max. Overload Voltage |
1/4W | 2.6±0.5 | 6.8 | 28 | 0.6 | 0.22〜200K | 250V | 400V |
1/2W | 3.0 | 9 | 28 | 0.65 | 0.22〜200K | 300V | 400V |
1W | 4.5 | 11 | 28 | 0.8 | 0.22〜200K | 350V | 600V |
2W | 5.0 | 15 | 28 | 0.8 | 0.22~200K | 350V | 600V |
Derating Curve of NRSN Anti-Pulse Non-Inductive Resistors:
For resistors operated in ambient temperatures above 70 ,power rating must be derated in accordance with the curvebelow.
Surface Temperature Rise of NRSN Anti-Pulse Non-Inductive Resistors: