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Specifications
Type:
Metal Film Resistor
Resistance:
20kΩ
Voltage-Supply(Max):
500V
Power(Watts):
2W
Temperature Coefficient:
±50ppm/℃
Tolerance:
±1%
Operating Temperature:
-55℃~+125℃
Mfr. Part #:
RN2WS20KFT/BA1
Package:
Through Hole,D4.5xL11mm
Key Attributes
Model Number:
RN2WS20KFT/BA1
Product Description
Product Overview
Precision Metal Film Fixed Resistors from SHI MENG ELECTRONIC CO.,LTD. offer high accuracy, stability, and reliability with low noise and a small voltage coefficient. They are designed for various applications requiring precise resistance values and are compliant with RoHS and REACH environmental regulations.
Product Attributes
- Brand: SHI MENG ELECTRONIC CO.,LTD.
- Certifications: RoHS, REACH
- Material: Ni Cr alloy conductive layer
- Color: Blue epoxy resin coating (standard), Grey or Brick Red (special order)
Technical Specifications
| Type | Rated Power | Tolerance | Resistance Range | Temperature Coefficient (T.C.R) | Max Continuous Working Voltage | Max Overload Voltage | Insulation Resistance Voltage | Operating Temp Range |
| 1/8W | 1/8W | 0.1% to 1% | 0 & 0.1~10M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 200V | 400V | 300V | -55 ~ +125 |
| 1/6W | 1/6W | 0.1% to 1% | 0 & 0.1~10M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 250V | 500V | 350V | -55 ~ +125 |
| 1/4WS | 1/4W | 0.1% to 1% | 0 & 0.1~10M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 350V | 700V | 500V | -55 ~ +125 |
| 1/2WSS | 1/2W | 0.1% to 1% | 0 & 0.1~10M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 500V | -55 ~ +125 |
| 1/4W | 1/4W | 0.1% to 1% | 0 & 0.1~10M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 500V | -55 ~ +125 |
| 1/2WS | 1/2W | 0.1% to 1% | 0 & 0.1~10M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 500V | -55 ~ +125 |
| 1WSS | 1W | 0.1% to 1% | 0 & 0.1~10M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 500V | -55 ~ +125 |
| 1/2W | 1/2W | 0.1% to 1% | 0 & 0.1~10M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 500V | -55 ~ +125 |
| 1WS | 1W | 0.1% to 1% | 0.1~2M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 500V | -55 ~ +125 |
| 2WSS | 2W | 0.1% to 1% | 0.1~2M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 500V | -55 ~ +125 |
| 1W | 1W | 0.1% to 1% | 0.1~2M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 500V | -55 ~ +125 |
| 2WS | 2W | 0.1% to 1% | 0.1~2M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 500V | -55 ~ +125 |
| 2W | 2W | 0.1% to 1% | 0.1~2M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 500V | -55 ~ +125 |
| 3WS | 3W | 0.1% to 1% | 0.1~2M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 700V | -55 ~ +125 |
| 3W | 3W | 0.1% to 1% | 0.1~2M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 700V | -55 ~ +125 |
| 5WS | 5W | 0.1% to 1% | 0.1~2M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 700V | -55 ~ +125 |
| 5W | 5W | 0.1% to 1% | 0.1~2M | 15PPM/C, 25PPM/C, 50PPM/C, 100PPM/C | 500V | 1000V | 700V | -55 ~ +125 |
Construction
Component Breakdown:
- Tinned copper lead wire
- High heat exchanged ceramic base
- Tin-plated steel caps
- High stability Electric conduction film
- Color ring Mark
- Epoxy resin coating (Standard: Blue; Special order: Grey or Brick Red non-combustible finish for 5W products due to higher surface temperature)
Glossary
- Rated resistance: Designed resistance value usually indicated on the resistor.
- Rated Ambient Temperature: Maximum ambient temperature at which the power rating may be applied continuously. Refers to the temperature around the resistor inside equipment.
- Rated power: Maximum power allowed at 70 ambient temperature during durability test, without exceeding specified resistance change.
- Derating curve: Used to determine rated power when ambient temperature exceeds 70.
- Rated Voltage: Maximum D.C. or A.C. voltage (rms) continuously applied under rated ambient or terminal temperature. Calculated from rated power and nominal resistance. Shall not exceed maximum working voltage.
- Critical Resistance: Maximum nominal resistance value allowing rated power application without exceeding maximum working voltage.
- Maximum Working Voltage: Maximum D.C. or A.C. voltage (rms) continuously applied to the terminations.
- Allowable voltage: Voltage applied for 5 seconds during short-time overload test, typically 2.5 times rated voltage or maximum overload voltage, whichever is lower.
Precautions for Use
- For high resistance values (hundreds of K ohm), the thin Ni-Cr alloy film may reduce reliability, especially in high humidity environments. Consider alternative resistor types for high-reliability designs.
- For ultra-high resistance values, consider MG High Voltage Surge Resistors or CHIP resistors.
- For low and ultra-low resistance values where temperature coefficient or current capability is critical, consider KN Wire Wound Resistors.
- Precision metal film resistors have thinner films compared to other thin-film types, making them less resistant to pulses. Avoid using high resistance values in high-pulse or continuous pulse circuits.
- The conductive composition is prone to oxidation at high temperatures. Ensure adequate heat dissipation and avoid using glues for fixing or potting on the resistor surface, as they can impede heat dissipation and potentially cause electrochemical reactions leading to failure.
2410121258_TyoHM-RN2WS20KFT-BA1_C433608.pdf
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