Product Overview
The RAxxx Series Metal Alloy Current Sensing Chip Resistors from Pakermicro (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. Suitable for automotive electronics, current sensing, mobile phones, computers, power supplies, and battery chargers, these resistors provide a robust solution for demanding applications.
Product Attributes
- Brand: Pakermicro
- Origin: Shenzhen, China
- Material: Metal Alloy
- Package: Plastic Package (Epoxy, UL: 94V-0)
- Compliance: Halogen free, RoHS compliant, Pb free, AEC-Q200 relevant provisions
- Mounting Position: Any
- Electrode: Large electrode () and small electrode () options
Technical Specifications
| Model | Rated Power | Resistance Range | TCR (ppm/) | Insulation Resistance | Operating Temperature Range |
|---|---|---|---|---|---|
| RA1206 | 1W | 1m~100m | 1m: 350 2m~100m: 50 | >100M | -55~+170 |
| RA1206 | 1/2W | 110m~200m | 50 | ||
| RA2512 | 2W, 3W | 0.5m~500m | 0.5 m 1m: 350 2m~500m: 50 | ||
| RA0805 | 1/4W, 1/2W | 1m | 350 | >100M | -55~+170 |
| RA0805 | 1/2W | 2 m~20m | 50 | ||
| Marking on Resistor's Body (for 0.5%, 1%, 2%, 3%, 5% tolerance): 4 digits. First letter 'R' denotes 10. Other three digits declare resistance. | |||||
| Resistance Value Codes: R50m=0.5m, R001=1m, R002=2m, R010=10m, R100=100m, R500=500m, etc. | |||||
| Rated Current Calculation: I = (P / R) | |||||
Package Outline 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 |
Recommended Solder Pad Dimensions
| Type | Resistance Range | A (mm) | B (mm) | C (mm) | F (mm) | W (mm) |
|---|---|---|---|---|---|---|
| RA0805 | 1m~20m | 1.40 | 1.20 | 1.40 | - | - |
| RA2512 | 0.5m~4m () | 4.00 | 3.10 | 1.80 | - | - |
| RA2512 | 1m~500m | 4.00 | 2.10 | 4.10 | - | - |
| RA1206 | 1m~200m | - | - | - | 1.80 | 1.70 |
| RA1206 | - | - | - | - | - | 1.60 |
Performance Reliability Test Methods
| Test Item | Test Methods | Test Conditions | R% (Max) |
|---|---|---|---|
| Temperature Coefficient | IEC60115-1 4.8 | TCR=(R-R0)/(t-t0)R0 10 (ppm) | < 1% |
| ESD test | AEC-Q200-002 | 2KV, 2times/1s | < 1% |
| Solderability | J-STD-002B test B | Dip terminal in flux, then solder bath at 2455 for 2~3sec. | < 1% |
| Resistance to soldering heat | IEC60115-1 4.13 | Dip terminal in flux, then solder bath at 2605 for 101sec. | < 1% |
| Mechanical Shock | MIL-STD-202 METHOD 213 | 100g's, Normal duration 6ms, half sine shock pulse. | < 1% |
| Terminal Strength | MIL-STD-202 METHOD 211 | Applied a 17.7N (1.8Kg) for 601seconds. | < 1% |
| Terminal Bending | AEC-Q200-006 | Min 2mm deflection, 60sec. | < 1% |
| Biased Humidity | IEC60115-1 4.23.4 | 1000 hours, 85/85%RH, 10% of operating power. | < 1% |
| Operational life | IEC60115-1 4.18 | 1000 hours @ 70, applied rated current for 1.5H and rested for 0.5H repeatedly. | < 1% |
| Temperature cycling | MIL-STD-202 METHOD 107 | 1000 Cycles (-55 to +125), Devices mounted. Max transfer time 20 sec. | < 1% |
| Short-time overload | JESD22 Method JA-104 | Applied 5.0 times of rated power for 5 second. | < 1% |
| High Temperature Exposure | MIL-STD-202 METHOD 108 | 1000 hrs. @ T=125. | < 1% |
| Low Temperature operation | MIL-STD-202 METHOD 103 | 45 min. @ T=-55 . | < 1% |
| Resistance to 100g's | MIL-STD-202 METHOD 213 | 100g's, Normal duration 6ms, half sine shock pulse. | < 1% |
| Vibration | MIL-STD-202 METHOD 204 | 5g's for 20min. 12 cycles, 10-2000Hz. | < 1% |
| Thermal shock | AEC-Q200-005 | -55/+125C, Number of cycles is 300. | < 1% |
2511271355_PAKER-RA2512F3R003GD_C53054987.pdf
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