RAxxx Series Metal Alloy Current Sensing Chip Resistors
Product Overview
The RAxxx Series Metal Alloy Current Sensing Chip Resistors are designed for high stability and reliability, featuring ultra-low resistance values and excellent temperature coefficient characteristics. These resistors offer high power ratings up to 3 watts and are Halogen-free and RoHS compliant. They are suitable for a wide range of applications including automotive electronics, current sensing, mobile phones, computers, power supplies, and battery chargers.
Product Attributes
- Brand: (Pakermicro)
- Type: Metal Alloy Current Sensing Chip Resistors
- Material: Metal Alloy
- Compliance: Halogen free, RoHS compliant, Pb free, AEC-Q200 relevant provisions
- Mounting: Any position
- Package: Plastic Package Epoxy UL: 94V-0
Technical Specifications
| Model | Rated Power | Resistance Range | TCR (ppm/) | Insulation Resistance | Dimensions (L x W x T) mm | Electrode Size (E) mm |
|---|---|---|---|---|---|---|
| RA1206 | 1W | 1m~100m (D, F, G, H, J) | 1m: 350 2m~100m: 50 | >100M | 3.2 0.20 x 1.6 0.20 x 0.60 0.20 | 0.50 0.20 |
| RA1206 | 1/2W | 110m~200m (D, F, G, H, J) | 50 | >100M | 3.2 0.20 x 1.6 0.20 x 0.60 0.20 | 0.50 0.20 |
| RA2512 | 2W, 3W | 0.5m~500m (D, F, G, H, J) | 0.5 m , 1m: 350 1m ~4m: 50 2m~500m: 50 | >100M | 6.4 0.20 x 3.2 0.20 x 0.80 0.20 | : 2.20 0.20 : 0.90 0.20 |
| RA0805 | 1/4W, 1/2W | 1m (D, F, G, H, J) | 350 | >100M | 2.0 0.10 x 1.25 0.10 x 0.60 0.20 | 0.40 0.20 |
| RA0805 | 1/4W, 1/2W | 2 m~20m (D, F, G, H, J) | 50 | >100M | 2.0 0.10 x 1.25 0.10 x 0.60 0.20 | 0.40 0.20 |
Marking Code & Information
Part Number Structure: RA [Size] [Rated Power] [Tolerance] [Resistance Value] [Packing Code]
Example: RA2512F3R010G
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 |
Operating Conditions
- Operating Temperature Range: -55 to +170
- Rated Current Calculation: I = sqrt(P / R)
- Maximum Working Current: Shall be considered if calculated value exceeds table limits.
- Power Derating: Required for ambient temperatures above 70C, refer to derating curve.
Reliability Test Methods
| Test Item | Test Methods | Test Conditions | R% (Max) |
|---|---|---|---|
| Solderability | IEC60115-1 4.18 | 2455 for 2~3sec. | < 1% |
| Resistance to soldering heat | IEC60115-1 4.23.4 | 2605 for 101sec. | < 1% |
| Mechanical Shock | MIL-STD-202 METHOD 213 | 100g's, 6ms half sine shock pulse. | < 1% |
| Terminal Strength | AEC-Q200-006 | 17.7N (1.8Kg) for 601 seconds. | < 1% |
| Terminal Bending | AEC-Q200-005 | Min 2mm deflection, 60sec. | < 1% |
| Biased Humidity | JESD22 Method JA-104 | 85/85%RH, 10% of operating power, 1000 hours. | < 1% |
| Operational life | IEC60115-1 4.13, MIL-STD-202 METHOD 108 | 85/85%RH, 10% of operating power, 1000 hours. | < 1% |
| Temperature cycling | MIL-STD-202 METHOD 107 | -55 to +125, 1000 Cycles. | < 1% |
| Short-time overload | IEC60115-1 4.8 | 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% |
| ESD test | AEC-Q200-002 | 2KV, 2 times/1s. | < 1% |
| Vibration | MIL-STD-202 METHOD 204 | 5g's for 20min, 10-2000Hz, 12 cycles. | < 1% |
Temperature Coefficient
TCR = (R - R0) / (t - t0) * R0 * 10^6 (ppm)
Where: R0 = resistance at room temperature, R = resistance at test temperature, t0 = room temperature, t = test temperature (+125 or +155).
2508191745_PAKER-RA2512F3R010G_C49652793.pdf
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