Product Overview
The RAxxx Series Metal Alloy Current Sensing Chip Resistors from Parker Microelectronics (Shenzhen) Co., Ltd. are designed for high stability and reliability. These resistors feature an epoxy plastic package (UL: 94V-0) and are halogen-free and RoHS compliant. They offer ultra-low resistance values, excellent temperature coefficient characteristics, and high power ratings up to 3 watts, meeting AEC-Q200 provisions. Applications include automotive electronics, current sensing, mobile phones, computers, power supplies, and battery chargers.
Product Attributes
- Brand: Parker Microelectronics (Shenzhen) Co., Ltd.
- Type: Metal Alloy Current Sensing Chip Resistors
- Material: Metal Alloy
- Package: Plastic Package Epoxy (UL: 94V-0)
- Certifications: Halogen free, RoHS compliant, AEC-Q200 relevant provisions
- Mounting Position: Any
- Lead Free: Yes
Technical Specifications
| Model | Rated Power | Resistance Range | TCR (ppm/) | Insulation Resistance | Operating Temperature Range |
|---|---|---|---|---|---|
| RA1206 | 1W, 1/2W | 1m~200m | 1m: 350; 2m~100m: 50; 110m~200m: 50 | >100M | -55~+170 |
| RA2512 | 2W, 3W | 0.5m~500m | 0.5 m, 1m: 350; 2m~500m: 50; : 50 | >100M | |
| RA0805 | 1/4W, 1/2W | 1m~20m | 1m: 350; 2 m~20m: 50 | >100M |
Dimensions
| Type | L (mm) | W (mm) | T (mm) | E (mm) |
|---|---|---|---|---|
| RA1206 | 3.20.20 | 1.60.20 | 0.600.20 | 0.500.20 |
| RA2512 | 6.40.20 | 3.20.20 | 0.800.20 | :2.200.20; :0.900.20 |
| RA0805 | 2.00.10 | 1.250.10 | 0.600.20 | 0.400.20 |
Marking Code and Information
| Component | Type | Size | Rated Power | Tolerance | Resistance Value | Packing Code | Electrode Size |
|---|---|---|---|---|---|---|---|
| RAxxx Series | RA: Metal Alloy Current Sensing Chip Resistors | 1206, 2512, 0805 | A=1/2W, B=1.5W, 1=1W, 2=2W, 3=3W | D=0.5%, F=1%, G=2%, H=3%, J=5% | R50m=0.5m, R002=2m, R010=10m, 1R5m=1.5m, etc. | G=reel, V=bulk | (D) |
Marking on the Resistor's Body
For 0.5%, 1%, 2%, 3%, 5% tolerance products: The marking is 4 digits. The first letter 'R' denotes 10. The other three digits declare resistance.
Resistance Value Codes
| R-value | Code | R-value | Code | R-value | Code | R-value | Code |
|---|---|---|---|---|---|---|---|
| 0.5m | R50m | 25m | R025 | 80m | R080 | 200m | R200 |
| 1m | R001 | 30m | R030 | 90m | R090 | 220m | R220 |
| 1.5m | 1R5m | 35m | R035 | 100m | R100 | 250m | R250 |
| 2m | R002 | 40m | R040 | 120m | R120 | 270m | R270 |
| 3m | R003 | 50m | R050 | 130m | R130 | 300m | R300 |
| 5m | R005 | 57m | R057 | 140m | R140 | 330m | R330 |
| 10m | R010 | 60m | R060 | 150m | R150 | 360m | R360 |
| 15m | R015 | 68m | R068 | 160m | R160 | 400m | R400 |
| 20m | R020 | 75m | R075 | 180m | R180 | 500m | R500 |
Rated Current Calculation
Rated current (A) = sqrt(Rated Power (W) / Resistance (ohm)). If the calculated value exceeds the maximum working current, the maximum working current shall be regarded as the rated current.
Performance Reliability Test Methods
| Test Item | Test Methods | Test Conditions | R% |
|---|---|---|---|
| Solderability | IEC60115-1 4.8 | Dip terminal in flux, then into soldering bath at 2455 for 2~3sec. | < 1% |
| Resistance to soldering heat | IEC60115-1 4.23.4 | Dip terminal in flux, then into soldering bath at 2605 for 101sec. | < 1% |
| Mechanical Shock | MIL-STD-202 METHOD 213 | Resistance to 100g's, Normal duration is 6ms, half sine shock pulse. | < 1% |
| Resistance to vibration | MIL-STD-202 METHOD 107 | 5g's for 20min, 12 cycles, 10-2000Hz. | < 1% |
| Terminal Bending | AEC-Q200-005 | Min 2mm deflection, 60sec. | < 1% |
| Terminal Strength | AEC-Q200-006 | Applied a 17.7N (1.8Kg) for 601seconds. | < 1% |
| Biased Humidity | IEC60115-1 4.18 | 1000 hours, 85/85%RH. 10% of operating power. | < 1% |
| Operational life | MIL-STD-202 Method 108 | 1000 hours @ 70, rated current for 1.5H and rested for 0.5H repeatedly. | < 1% |
| Temperature cycling | JESD22 Method JA-104 | 1000 Cycles (-55 to +125). Devices mounted. Maximum transfer time is 20 seconds. | < 1% |
| Short-time overload | IEC60115-1 4.13 | Applied 5.0 times of rated power for 5 second. | < 1% |
| High Temperature Exposure | MIL-STD-202 METHOD 103 | 1000 hrs. @T=125. | < 1% |
| Low Temperature operation | MIL-STD-202 METHOD 108 | 45 min. @T=-55 . | < 1% |
| ESD test | J-STD-002B test B | 2KV, 2 times/1s | < 1% |
| Thermal shock | MIL-STD-202 METHOD 107 | use -55/+125C, Number of cycles is 300. | < 1% |
Temperature Coefficient
TCR = (R - R) / (t - t) * R * 10 (ppm), where R is resistance at room temperature, R is resistance at test temperature (t), t is room temperature, and t is test temperature (+125 or +155).
2508191745_PAKER-RA2512F3R003G_C49652789.pdf
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