Product Overview
The PATCH RESISTOR is a pure alloy, high-power current sensing resistor designed for accurate current detection in various electronic applications. It features an ultra-low resistance range (as low as 0.0R), excellent temperature coefficient characteristics, and high power handling capabilities up to 3W. This SMD surface mount component is compliant with AEC-Q200 standards and RoHS/REACH certifications, making it suitable for demanding automotive and consumer electronics environments.
Product Attributes
- Brand: Not specified (Implied by part number prefix JER)
- Origin: Not specified
- Material: Pure Alloy
- Color: Not specified
- Certifications: AEC-Q200, RoHS, REACH
Technical Specifications
| Type | Size | Rated Power (W) | Resistance Range (m) | TCR (ppm/) | Insulation Resistance (M) | Dimensions (mm) L x W x T | Max Current (A) |
| 1206 | 1206 | 1W (up to 3W) | 1m ~ 200m | 350 (1m); 50 (2m~100m) | >100M | 3.200.20 x 1.600.20 x 0.600.20 | Calculated by I=P/R, subject to max working current |
| 2512 | 2512 | 2W, 3W | 0.5m ~ 500m | 50 (1m~4m large electrode); 350 (0.5m large electrode, 1m); 50 (2m~500m) | >100M | 6.400.20 x 3.200.20 x 0.800.20 | Calculated by I=P/R, subject to max working current |
| 0805 | 0805 | 0.25W, 0.5W | 1m ~ 20m | 350 (1m); 50 (2m~20m) | >100M | 2.000.20 x 1.250.20 x 0.600.20 | Calculated by I=P/R, subject to max working current |
Applications
- Current sensor
- Power supplies
- Battery chargers
- Mobile phones
- Computers
- Consumer electronics
- Automotive electronics
Part Numbering Example
JER1206F1R500(L) = JER Series, 1206 Size, 1W, 1% Tolerance, 500m Resistance
Marking Code Examples
Resistance values are marked using alphanumeric codes (e.g., R50m = 0.5m, R001 = 1m, 1R5m = 1.5m, R500 = 500m).
Operating Conditions
- Operating Temperature Range: -55 to +170
- Power Derating: Maximum load power must be reduced for ambient temperatures above 70, refer to power attenuation curve.
Packaging Specifications
Available in tape and reel packaging. Reel dimensions and quantities vary by size (e.g., 1206: 5000 pcs/reel, 2512: 4000 pcs/reel, 0805: 5000 pcs/reel).
Soldering Recommendations
Refer to suggested Reflow-Soldering and Wave-Soldering profiles. Recommended solder paste: 96.5Sn/3.0Ag/0.5Cu.
Performance Reliability Test Methods
The resistors undergo various reliability tests including Short Time Overload, Temperature Coefficient, Temperature Cycling, High Temperature Storage, Low Temperature Operation, High Temperature and High Humidity, Operational Life, Resistance to Vibration, Resistance to Solder Heat, Terminal Bending, Mechanical Shock, Terminal Strength, Thermal Shock, Flammability (UL-94 V-0 or V-1), and ESD Test (2KV).
2512081620_JIERR-JER2512J2R001L_C53120957.pdf
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Accurate current detection resistor JIERR JER2512J2R001L with resistance range from 0.5m to 500m ohms Images
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