Product Overview
The RAxxx Series Metal Alloy Current Sensing Chip Resistors from Pakermicro are designed for high stability and reliability, offering ultra-low resistance values and excellent temperature coefficient characteristics. These resistors feature a high power rating of up to 3 watts and are Halogen-free and RoHS compliant, meeting the relevant provisions of AEC-Q200. They are ideal for applications in automotive electronics, current sensing, mobile phones, computers, power supplies, battery chargers, and other fields requiring precise current measurement.
Product Attributes
- Brand: Pakermicro
- Origin: Shenzhen, China
- Material: Metal Alloy
- Package: Plastic Package (Epoxy UL: 94V-0)
- Certifications: Halogen free, RoHS compliant, AEC-Q200 relevant provisions
- Mounting Position: Any
- Lead Free: Pb free
Technical Specifications
| Model | Rated Power | Resistance Range | TCR (ppm/) | Insulation Resistance | Dimensions (L x W x T mm) | Electrode Size (E mm) | Packing Code |
|---|---|---|---|---|---|---|---|
| RA1206 | 1W | 1m~100m (D, F, G, H, J) | 1m: 350; 2m~100m: 50 | >100M | 3.20.20 x 1.60.20 x 0.600.20 | 0.500.20 | G (reel), V (bulk) |
| RA1206 | 1/2W | 110m~200m (D, F, G, H, J) | 50 | 3.20.20 x 1.60.20 x 0.600.20 | 0.500.20 | G (reel), V (bulk) | |
| RA2512 | 2W, 3W | 0.5m~500m (D, F, G, H, J) | 0.5 m, 1m: 350; 2m~500m: 50 | 6.40.20 x 3.20.20 x 0.800.20 | : 2.200.20; : 0.900.20 | G (reel), V (bulk) | |
| RA0805 | 1/4W, 1/2W | 1m (D, F, G, H, J) | 1m: 350 | >100M | 2.00.10 x 1.250.10 x 0.600.20 | 0.400.20 | G (reel), V (bulk) |
| RA0805 | 1/4W, 1/2W | 2 m~20m (D, F, G, H, J) | 50 | >100M | 2.00.10 x 1.250.10 x 0.600.20 | 0.400.20 | G (reel), V (bulk) |
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 10-3. 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 |
Operating Conditions
- Operating Temperature Range: -55 to +170
- Rated Current Calculation: I = sqrt(P / R)
- Maximum Working Current: Shall not exceed the value calculated by the formula if it is higher than the table's maximum working current.
Reliability Test Methods
| Test Item | Test Methods | Test Conditions | R% |
|---|---|---|---|
| Solderability | IEC60115-1 4.18 / J-STD-002B test B | Dip terminal in flux, then in soldering bath at 2455 for 2~3 sec. | < 1% |
| Resistance to soldering heat | IEC60115-1 4.23.4 / MIL-STD-202 Method 108 | Dip terminal in flux, then in soldering bath at 2605 for 101 sec. | < 1% |
| Mechanical Shock | MIL-STD-202 METHOD 213 | Resistance to 100g's, Normal duration is 6ms, half sine shock pulse. | < 1% |
| Terminal Bending | AEC-Q200-005 | Min 2mm deflection, 60sec. | < 1% |
| Terminal Strength | AEC-Q200-006 | Applied a 17.7N (1.8Kg) for 601 seconds. | < 1% |
| Biased Humidity | IEC60115-1 4.13 / MIL-STD-202 METHOD 103 | 85/85%RH, 10% of operating power. Measurement at 244 hours after test conclusion. | < 1% |
| Operational life | IEC60115-1 4.13 / MIL-STD-202 METHOD 108 | 1000 hours, 85/85%RH, 10% of operating power. Measurement at 244 hours after test conclusion. | < 1% |
| Temperature cycling | MIL-STD-202 METHOD 107 | 1000 Cycles (-55 to +125). Devices mounted. Maximum transfer time is 20 seconds. | < 1% |
| Short-time overload | Applied 5.0 times of rated power for 5 second. | < 1% | |
| High Temperature Exposure | 1000 hrs. @T=125. Measurement at 244 hours after test conclusion. | < 1% | |
| Low Temperature operation | 45 min. @T=-55 . Measurement at 244 hours after test conclusion. | < 1% | |
| ESD test | AEC-Q200-002 | 2KV, 2times/1s | < 1% |
| Vibration | MIL-STD-202 METHOD 204 | 5g's for 20min. 12cycles, 10-2000Hz. | < 1% |
| Thermal shock | JESD22 Method JA-104 | -55/+125C, Number of cycles is 300. | < 1% |
Temperature Coefficient TCR
TCR = (R - R0) / (t - t0) * R0 * 106 (ppm)
Where R0 is resistance at room temperature, R is resistance at test temperature (+125 or +155), t0 is room temperature, and t is test temperature.
2508191745_PAKER-RA2512F3R006G_C49652792.pdf
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