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Specifications
Type:
Wirewound Resistor
Resistance:
3.3Ω
Voltage-Supply(Max):
-
Power(Watts):
500mW
Temperature Coefficient:
±350ppm/℃
Tolerance:
±5%
Mfr. Part #:
RXF-1/2W-3.3R-J-T52
Package:
Through Hole,D4xL10mm
Key Attributes
Model Number:
RXF-1/2W-3.3R-J-T52
Product Description
Product Overview
The RXF series resistors from Dongguan Hongda Electronic Technology Co., Ltd. are designed for excellent surge resistance and good fusing consistency. Their compact size facilitates easy installation, ensuring safety and reliability. These resistors are widely used in electronic equipment such as light sources, switching power supplies, chargers, and home appliances. They have obtained multiple safety certifications, including VDE, UL/CUL, and CQC.
Product Attributes
- Brand: RXF Series
- Manufacturer: Dongguan Hongda Electronic Technology Co., Ltd.
- Origin: China
- Certifications: VDE, UL/CUL (Cert No: E359590), CQC (Cert Nos: 0.5W-CQC13001095211, 1W-CQC13001095213, 2W-CQC13001095221)
Technical Specifications
Dimensions and Lead Lengths
| Model | Rated Power (W) | Dimensions (mm) Dmax. x Lmax. | Lead Allowable 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 | 250 |
| 1, 2S, 3X | - | - | - | 350 | 350 |
| 2, 3S | - | 0.22-47 | - | 500 | 350 |
General Data
| Parameter | Value |
|---|---|
| Nominal Resistance Tolerance | 5%, 10% |
| Climatic Category | 55/155/21 |
| Low Air Pressure | 8.5kpa |
| Stability Grade | 5% |
| Limit Resistance Change (Long-term) | (5%R+0.1) |
| Limit Resistance Change (Short-term) | (1%R+0.05) |
| Temperature Coefficient (Standard) | 350 ppm |
| Temperature Coefficient (Semi-fusing, Explosion-proof, High Surge) | 35001500 ppm |
| Rated Current | I(A) = P(W)/R() |
| Rated Power Condition | Maximum continuous operation at 70; derate according to curve above 70. |
| Fusing Definition | Resistance significantly increases when subjected to specified overload, causing current to drop below 1/50 of initial test current. Fusing time is the duration from overload application to fusing. |
Fusing Time Requirements (Standard/High Surge)
| Rated Current Multiplier (x) | Fusing Time (S) |
|---|---|
| 0.25W (R1) | 6 |
| 0.25W (R1) | 7 |
| 0.52W (R1) | 6 |
| 0.52W (R1) | 6 |
| - | 30 |
| - | 122 |
| - | 100 |
| - | 58.5 |
| - | 55 |
| - | 25 |
| - | 70 |
| - | 155 |
| - | 275 |
Note: Fusing time can be customized per user requirements.
Fusing Time Requirements (Explosion-proof)
| Rated Current Multiplier (x) | Fusing Time (S) |
|---|---|
| 0.25-2W | 60 |
| 4 | 30 |
Note: Fusing time can be customized per user requirements.
Fusing Time Requirements (Semi-fusing)
| Rated Current Multiplier (x) | Fusing Time (S) |
|---|---|
| 0.25-2W | 60 |
| 2 | 30 |
Note: Fusing time can be customized per user requirements.
Impact Resistance Performance
Test: Close switch K1, open K2. Repeatedly switch K1 ON/OFF for 100 cycles (2S ON, 2S OFF). The test resistor should not become open-circuited.
Notes: Capacitor C selection based on customer requirements; default C=10uF. Resistor R value selection based on circuit use, calculated as internal resistance; power rating 20W, power factor 0.8. For resistors below 10W, typically use 20W, 5.1K(5%).
Main Test Items, Methods, and Performance Requirements
| No. | Test Item | Test Method | Performance Requirements |
|---|---|---|---|
| 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. Measure resistance after 1-2h recovery. Calculate resistance change rate. | Resistance Change: R (2%R+0.05) |
| 3 | Solderability | Dip lead ends in solder pot (2605) for 20.5S, immersion depth 2+0/-0.5mm from body. Observe solder coverage. | Over 90% surface coverage in circumferential direction of the dipped part. |
| 4 | Voltage Proof | Place resistor in metal "V" groove. Apply specified insulation voltage between connected leads and "V" groove for 60S. | No visible damage, clear marking; no breakdown or arcing. |
| 5 | Solder Heat Resistance | Measure resistance before test. Dip lead ends in solder pot (35010) for 3.50.5S, immersion depth 2+0/-0.5mm from body. Measure resistance after 1h recovery. Calculate resistance change rate. | Resistance Change: R (1%R+0.05) |
| 6 | Rapid Temperature Change | Cycle: Low temp (-553) (30min) Room temp (2-3min) High temp (1553) (30min) Room temp (2-3min). Perform 5 cycles. Measure resistance after 1-2h recovery. Calculate resistance change rate. | Resistance Change: R (1%R+0.05) |
| 7 | Endurance | Place resistor in constant temperature oven (703). Apply rated DC voltage: 1.5h ON, 0.5h OFF. Cycle for 1000h. Measure resistance after 1-4h recovery. Calculate resistance change rate. | Resistance Change: R (5%R+0.1) |
| 8 | Lead Strength | Tensile: 10N for 10S. Bending: Apply 5N load to lead, tilt body approx. 90 in (2-3)S. After recovery, bend in opposite direction (2 bends total). | Resistance Change: R (1%R+0.05) |
| 9 | Vibration | Resistor body distance from mounting point 61mm. Frequency range 10-500Hz, amplitude 0.75mm or acceleration 98m/s (whichever is smaller). Vibration direction along Z, X, Y axes for 2h each (total 6h). Cycle: 1min (10-55-10Hz). Measure resistance after test. Calculate resistance change rate. | 1) Appearance: No mechanical damage. 2) Resistance Change: R (1%R+0.05) |
| 10 | Climatic Sequence | Dry heat Cyclic damp heat (Test Db, 1st cycle) Cold Low pressure Cyclic damp heat (Test 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 (Table 5)
| Taping Specification | Dimensions (mm) U x W | P (mm) | L1-L2 (mm) | T (mm) | Z (mm) | R (mm) | t (mm) | S (mm) | T2 (mm) |
|---|---|---|---|---|---|---|---|---|---|
| T26 | 381 x 260.5 | 50.5 | 0.5 | 60.1 | 1 | 0 | 3.2 | 1.5 | - |
| T52 | 642 x 521 | - | 1 | - | - | - | - | - | - |
| T63 | 752 x 631 | 100.5 | 1.2 | 752 | 631 | - | - | - | - |
| T72 | 842 x 722 | 50.5 | 1.2 | 842 | 722 | - | - | - | - |
Sleeve Product Style and Dimensions (Table 6)
| 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 5 mm has tolerance of +2/-1 mm. Sleeve dimensions can be customized per customer requirements.
Molded Style and Dimensions (Table 7)
| Shape | Dimensions (mm) P1.0 | H1 | h0.5 |
|---|---|---|---|
| n Type | 5 | 3.5 | 8 |
| B Type | 5 | 3.5 | 8 |
| L Type | 12.5 | 4.5 | 14.5 |
Note: Molded shape and dimensions can be customized per customer requirements.
Model Specification Naming Convention (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 (See diagram below) |
| Model Suffix | S: Miniaturized, X: Ultra-miniaturized |
Color Ring 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, 1K/box
- Outer Box Packaging: Not specified
2304140030_Hongda-RXF-1-2W-3-3R-J-T52_C2149600.pdf
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