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Specifications
Type:
Metal Film Resistor
Resistance:
2.4kΩ
Voltage-Supply(Max):
250V
Power(Watts):
250mW
Temperature Coefficient:
±50ppm/℃
Tolerance:
±1%
Operating Temperature:
-55℃~+125℃
Mfr. Part #:
RN1/4W2K4FT/BA1
Package:
Through Hole,D2.4xL6.4mm
Key Attributes
Model Number:
RN1/4W2K4FT/BA1
Product Description
RN Series Precision Metal Film Resistors
RN series precision metal film resistors offer excellent electrical and mechanical performance with high precision, temperature stability, low noise, and good reliability. They are designed for applications requiring precise resistance values and stable performance across a range of temperatures.
Product Attributes
- Reference Standards: IEC 60115-1, JIS C 5201-1
- Type: RN Series Precision Metal Film Resistors
- Features: Low T.C. (25ppm, 50ppm, 100ppm), High precision (0.25%, 0.5%, 1%, 5%), Temperature stable, Low noise, Good reliability. 0.1% / 25ppm available case by case.
- Certifications: Compliant with IEC 60115-1, JIS C 5201-1
Technical Specifications
| Rated Wattage | Resistance Range () | Max. Working Voltage (V) | Tolerance (%) | Temperature Coefficient (ppm/C) | Dimensions (mm) H x D | Lead Diameter (mm) d | Surface Temp. Rise (C) |
| 1/8W | 10~1M | 150 | 1% (F) or 0.5% (D) | 25 / 50 / 100 | 1.7 x 0.2 | 0.45 | 70 |
| 1/4WS | 10~1M | 200 | 1% (F) or 0.5% (D) | 25 / 50 / 100 | 1.7 x 0.2 | 0.45 | 70 |
| 1/4W | 10~2M | 250 | 1% (F) or 0.5% (D) | 25 / 50 / 100 | 2.4 x 0.5 | 0.6 | 70 |
| 1/2WS | 10~2M | 300 | 1% (F) or 0.5% (D) | 25 / 50 / 100 | 2.4 x 0.5 | 0.6 | 70 |
| 0.6W | 10~2M | 350 | 1% (F) or 0.5% (D) | 25 / 50 / 100 | 2.4 x 0.5 | 0.6 | 70 |
| 1/2W | 10~2M | 350 | 1% (F) or 0.5% (D) | 25 / 50 / 100 | 3.5 x 4.5 | 0.65 | 70 |
| 1W | 10~2M | 500 | 1% (F) or 0.5% (D) | 25 / 50 / 100 | 5.0 x 3.7max. | 0.8 | 70 |
| 1WL | 10~2M | 500 | 1% (F) or 0.5% (D) | 25 / 50 / 100 | 6.4 x 9 | 0.8 | 70 |
Environmental Characteristics & Test Methods
| Characteristic | Test Method / Condition | Requirement |
| Resistance Tolerance | - | 0.25%, 0.5%, 1%, 5% |
| Resistance Temp. Coeff. | - | 25ppm, 50ppm, 100ppm |
| Power Rating | - | As specified per model |
| Load Short Time Overload | Rated power load 90 minutes ON 30 minutes OFF, 1000 hours | R/R 1.5% |
| Dielectric Withstanding Voltage | 2.5 times of rated voltage for 5 seconds | No evidence of mechanical damage or insulation breakdown |
| Insulation Resistance | DC 100V or 500V megger | 10,000M |
| Terminal Strength | 1 kg pull for 5 seconds | No evidence of mechanical damage |
| Solder-ability | 235C 5 for 2 seconds | Minimum 95% coverage |
| Resistance to Soldering Heat | 270C 5 for 10 1 seconds | R/R 1% |
| Temp. Cycle | -65C (30 min.) -> Room Temp.(3 min.) -> +175C (30 min.) -> Room Temp.(3 min.) / (5 cycles) | R/R 1% |
| Load Life | Rated power load 90 minutes ON 30 minutes OFF, 40C, 95% RH, 1000 hours | R/R 2% |
| Moisture-proof Load Life | Rated power load 90 minutes ON 30 minutes OFF, 70C, 1000 hours | R/R 0.5% |
| Overload Voltage for 1 min. | (RN 1W & RN 1WL AC 350V, RN 1/4WS AC 300V, RN 1/8W AC 150V, RN 1/4W AC 200V, RN 1/2WS AC 300V, RN 0.6W AC 350V, RN 1/2W AC 350V, RN 1WL AC 500V) | Surface temp. 175C, R/R 1% |
| Nonflammability | 16 times of rated wattage for 5 min. (RN 1W & RN 1WL) | Not flamed |
Derating Curve
For resistors operated in ambient temperatures above 70C, power rating must be derated in accordance with the curve below.
(Image placeholder for Derating Curve)
How to Order
It is composed by Type, Rated Wattage, Nominal Resistance, Tolerance, Temperature Coefficient and Package.
e.g. RN 1/4W 10 F 50ppm T/B
- a. Type: Precision Metal Film Resistors are called "RN".
- b. Rated Wattage: Shown by "W", such as 1/8W, 1/4WS, 1/4W, 1/2WS, 0.6W, 1/2W, 1W, 1WL.
- c. Nominal Resistance: e.g. 10.
- d. Tolerance: 0.5%(D), 1%(F).
- e. Temperature Coefficient: 25ppm/C, 50ppm/C, 100ppm/C.
- f. Package: T/R (tape & reel), T/B (tape in box), Bulk.
Notes
- To prevent electric corrosion, the resistance over 100K should be limited at 50V.
- Too low or too high ohmic values can be supplied only case by case.
- Max. Overload Voltage is 2 times of Max. Working Voltage.
- RN 1W & RN 1WL are coated by flameproof paint.
2410121720_TyoHM-RN1-4W2K4FT-BA1_C410648.pdf
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