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Specifications
Type:
Wirewound Resistor
Resistance:
3.9Ω
Voltage-Supply(Max):
-
Power(Watts):
500mW
Temperature Coefficient:
±350ppm/℃
Tolerance:
±5%
Mfr. Part #:
RXF-1/2WS-3.9R-J-T52
Package:
Through Hole,D3xL7mm
Key Attributes
Model Number:
RXF-1/2WS-3.9R-J-T52
Product Description
Product Overview
The RXF series from Dongguan Hongda Electronic Technology Co., Ltd. offers high surge resistance, excellent fusing consistency, and a compact design for easy installation. These resistors are safe and reliable, widely used in electronic equipment such as light sources, switching power supplies, chargers, and home appliances. The series has obtained VDE, UL/CUL, and CQC safety certifications.
Product Attributes
- Brand: HONGDA
- Origin: Dongguan, China
- Certifications: VDE, UL/CUL (E359590), CQC
Technical Specifications
Dimensions and Lead Lengths
| Model | Rated Power (W) | Dimensions (mm) Dmax. Lmax. | Lead Allowance Length* (mm) H1 d0.05 |
|---|---|---|---|
| RXF 0.25, 0.5S, 1WX | 3.0 | 7.0 | 6070 0.380.45 1 |
| 0.5, 1S, 2WX | 4.0 | 10.0 | 6090 0.430.60 1.5 |
| 1, 2S, 3WX | 5.0 | 12.0 | 6070 0.540.72 |
| 2, 3S | 6.0 | 16.0 | 6080 0.600.72 |
Electrical Characteristics
| Model | Rated Power (W) | Resistance Range () | Resistance Tolerance (%) | Insulation Voltage (V) (DC or AC Peak) | Component Limit Voltage (V) |
|---|---|---|---|---|---|
| RXF 0.25, 0.5S, 1X | 0.22-300 | 5, 10 | 250 | 200 | |
| 0.5, 1S, 2X | 250 | 350 | |||
| 1, 2S, 3X | 350 | ||||
| 2, 3S | 0.22-47 | 500 | 350 |
General Data
| Parameter | Specification |
|---|---|
| Nominal Resistance Tolerance | 5%, 10% |
| Climatic Category | 55/155/21 |
| Low Air Pressure | 8.5kpa |
| Stability Grade | 5% |
| Limit Resistance Change | Long-term test: (5%R+0.1), Short-term test: (1%R+0.05) |
| Temperature Coefficient | Standard type 350 ppm; Semi-fusing type, explosion-proof type, high lightning resistance type: 35001500 ppm |
| Rated Current | I(A) = P(W)/R() |
| Derating Curve | Refer to Figure 2 (Rated power is maximum continuous operating power at 70; derate according to curve above 70) |
| Fusing Characteristic | Definition: Significant increase in resistance when subjected to specified overload, causing current to drop below 1/50 of initial test current. Fusing time is the time from applying overload until fusing occurs. |
| Fusing Time Requirements | Under specified rated current overload multiples, fusing time must comply with tables (Table 3-1 for standard and high lightning resistance, Table 3-2 for explosion-proof, Table 3-3 for semi-fusing). Fusing time can be customized. |
| Impact Resistance | Test according to Figure 3 (repeatedly switch K1 on/off 100 times, 2s on, 2s off). Resistor should not become open circuit. (Capacitor C selection based on customer requirements, typically 10uF; Resistor R selection based on circuit, 20W rated power, 0.8 power factor, typically 20W for resistors below 10W, 5.1K 5%.) |
Main Test Items, Methods, and Performance Requirements
| No. | Test Item | Test Method | Performance Requirement |
|---|---|---|---|
| 1 | Resistance | Measured by resistance error sorter. | Resistance value within nominal resistance and allowable tolerance. |
| 2 | Short-time Overload | Apply 2.5 times rated voltage for 5s, recover 1-2h, measure resistance, calculate change rate. | Resistance change: R(2%R+0.05) |
| 3 | Solderability | Dip lead in solder pot (2605) for 20.5s, 2+0/-0.5mm from body. Observe solder coverage. | Over 90% coverage on circumferential surface of immersed part. |
| 4 | Voltage Proof | Place resistor in metal "V" groove, apply specified insulation voltage between leads and groove for 60s. | No visible damage, clear marking; no breakdown, arcing. |
| 5 | Resistance to Soldering Heat | Dip lead in solder pot (35010) for 3.50.5s, 2+0/-0.5mm from body. Recover 1h, measure resistance, calculate change rate. | Resistance change: R(1%R+0.05) |
| 6 | Rapid Change of Temperature | Cycles of -553 (30min), room temp (2-3min), 1553 (30min), room temp (2-3min), 5 cycles. Recover 1-2h, measure resistance, calculate change rate. | Resistance change: R(1%R+0.05) |
| 7 | Endurance | Place in constant temperature oven (703), apply rated DC voltage, 1.5h on, 0.5h off, cycle for 1000h. Recover 1-4h, measure resistance, calculate change rate. | Resistance change: R(5%R+0.1) |
| 8 | Lead Strength | Tensile: 10N for 10s; Bending: 5N load, tilt body approx. 90 in 2-3s, then bend in opposite direction (2 bends total). | Resistance change: R(1%R+0.05) |
| 9 | Vibration | Resistor body 61mm from mounting point. Frequency range 10-500Hz, amplitude 0.75mm or acceleration 98m/s (whichever is smaller). Vibration along Z, X, Y axes for 2h each, total 6h. Cycle: 1min (10-55-10Hz). Measure resistance, calculate change rate. | 1) Appearance: No mechanical damage. 2) Resistance change: R(1%R+0.05) |
| 10 | Climatic Sequence | Dry heat, cyclic damp heat (Db), first cycle; Cold, low pressure, cyclic damp heat (Db), remaining cycles; DC load. | Resistance change: R(5%R+0.1). Insulation Resistance: 100M. |
| 11 | Accidental Overload | Install sample in single-layer wire mesh cylinder 253mm from resistor body. Apply 5, 10, 16 times rated power overload for 5min or until open circuit. | Wire mesh cylinder does not ignite. |
Taping Style and Dimensions
| Taping Specification | Dimensions (mm) U W P L1-L2 T Z R t S T26 |
|---|---|
| T26 | 381 260.5 50.5 0.5 60.1 1 0 3.2 1.5 |
| T52 | 642 521 1 |
| T63 | 752 631 1.2 752 631 100.5 |
| T72 | 842 722 50.5 1.2 842 722 100.5 |
Sleeve Product Style and Dimensions
| Shape | Dimensions (mm) H1 H11.5 H21.5 hh (15%) h12 h22 |
|---|---|
| TA Type | 70 20 20 50 10 10 |
| TB Type | 80 5 25 40 10 30 |
Note: Exposed lead length 5mm, tolerance is +2/-1 mm. Sleeve dimensions can be customized.
Molded Style and Dimensions
| Shape | Dimensions (mm) P1.0 H1 h0.5 |
|---|---|
| n Type | 5 3.5 8 3.5 |
| B Type | 5 3.5 8 3.5 |
| L Type | 12.5 4.5 14.5 5.5 |
Note: Molded shape and dimensions can be customized.
Model Specification Name Explanation (Example)
| Component | Description |
|---|---|
| RXF | Series Name |
| Rated Power | 0.25w, 0.5w, 1w, 2w, 3w |
| Resistance Tolerance | J: 5%, K: 10%, M: 20% |
| Nominal Resistance | E24 Series (refer to color code diagram) |
| Type | S: Miniaturized, X: Ultra-miniaturized |
Color Code Marking Diagram
| Color | 1st Digit | 2nd Digit | 3rd Digit | Multiplier | Tolerance |
|---|---|---|---|---|---|
| Black | 0 | 0 | 0 | 10 | |
| Brown | 1 | 1 | 1 | 10 | 1% |
| Red | 2 | 2 | 2 | 10 | 2% |
| Orange | 3 | 3 | 3 | 10 | |
| Yellow | 4 | 4 | 4 | 10 | |
| Green | 5 | 5 | 5 | 10 | 0.5% |
| Blue | 6 | 6 | 6 | 10 | 0.25% |
| Violet | 7 | 7 | 7 | 10 | 0.1% |
| Gray | 8 | 8 | 8 | 10 | |
| White | 9 | 9 | 9 | 10 | |
| Gold | 10 | 5% | |||
| Silver | 10 | 10% | |||
| Plain | 20% |
Packaging Method
- Inner box packaging: Taped reel 1K/box
- Outer carton packaging: (Details not provided)
2304140030_Hongda-RXF-1-2WS-3-9R-J-T52_C2149598.pdf
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