Product Overview
The PATCH RESISTOR is a pure alloy high-power current sensing resistor designed for surface mount applications. It offers ultra-low resistance values (as low as 0.0R) and high power handling capabilities up to 3W, making it ideal for precise current detection in demanding environments. It is AEC-Q200 compliant and meets RoHS and REACH certifications.
Product Attributes
- Brand: JER (implied by part number example)
- Material: Pure Alloy
- Certifications: AEC-Q200, RoHS, REACH
Technical Specifications
| Type | Rated Power (W) | Resistance Range (m) | TCR (ppm/) | Insulation Resistance (M) | Dimensions (mm) L x W x T | Max Working Current (A) |
|---|---|---|---|---|---|---|
| 1206 | 1W (up to 3W) | 0.5m ~ 500m | 350 (for 1m), 50 (2m~100m), 50 (110m~200m) | >100 | 3.200.20 x 1.600.20 x 0.600.20 | Calculated via I=(P/R) or model specific max |
| 2512 | 2W, 3W | 0.5m ~ 500m | 50 (1m~4m), 350 (0.5m), 50 (2m~500m) | >100 | 6.400.20 x 3.200.20 x 0.800.20 | Calculated via I=(P/R) or model specific max |
| 0805 | 0.25W, 0.5W | 1m ~ 20m | 350 (1m), 50 (2m~20m) | >100 | 2.000.20 x 1.250.20 x 0.600.20 | Calculated via I=(P/R) or model specific max |
Applications
- Current sensor
- Power supplies
- Battery chargers
- Mobile phones
- Computers
- Consumer electronics
- Automotive electronics
Part Numbering Example
JER1206F1R500(L)
- JER: Series
- 1206: Size
- F: Tolerance (1%)
- 1: Rated Power (1W)
- R500: Resistance (500m)
- (L): Optional suffix
Marking Codes
Refer to the provided list for resistance value to code mapping (e.g., R020 = 20m, 1R5m = 1.5m).
Power Derating
Maximum load power should be reduced when operating in ambient temperatures above 70C, as indicated by the power attenuation curve.
Rated Current Calculation
I = P/R (where I is rated current in A, P is rated power in W, and R is resistance in ohms). If the calculated current exceeds the model's maximum working current, the latter applies.
Operating Temperature Range
-55 to +170
Tapping Specification
| Size | Reel Diameter (mm) | Hub Diameter (mm) | Core Diameter (mm) | Tape Width (mm) | Pocket Dim (mm) | Qty/Reel |
|---|---|---|---|---|---|---|
| 1206 | 1782.00 | 60.001.00 | 13.500.50 | 11.400.10 | 9.000.30 | 5000 |
| 2512 | 1782.00 | 60.001.00 | 13.500.50 | 15.401.00 | 13.000.30 | 4000 |
| 0805 | 1782.00 | 60.001.00 | 13.500.50 | 11.400.10 | 9.000.30 | 5000 |
Packing Dimension
| Type | Packing | A (mm) | B (mm) | W (mm) | F (mm) | P0 (mm) | P1 (mm) | P2 (mm) | D (mm) | T (mm) |
|---|---|---|---|---|---|---|---|---|---|---|
| 0805 | paper | 1.650.20 | 2.400.20 | 8.000.10 | 3.500.05 | 4.000.1 | 4.000.10 | 2.000.05 | 1.500.10 | 0.840.1 |
| 1206 | paper | 2.000.15 | 3.600.20 | 8.000.10 | 3.500.05 | 4.000.10 | 4.000.10 | 2.000.05 | 1.500.10 | 0.840.1 |
| 2512 | Emboss | 3.600.2 | 6.900.2 | 12.00.2 | 5.50.05 | 1.750.1 | 4.000.1 | 4.000.1 | 2.00.05 | 1.00.15 |
Peel Force of Top Cover Tape
Paper carrier tape: 0.1N to 0.7N (10g to 70g). Plastic carrier tape: 0.3N to 1N (30g to 100g) at 300 mm/min and 165-180 degree peel angle.
Soldering Recommendations
Refer to Reflow-Soldering and Wave-Soldering profiles. Recommended solder paste: 96.5Sn/3.0Ag/0.5Cu. Values are suggested and should be adjusted based on actual application.
Suggested PCB Dimensions
| Size | Resistance Range (m) | a (mm) | b (mm) | L (mm) |
|---|---|---|---|---|
| 1206 | 1m~200m | 1.8 | 1.7 | 1.6 |
| 2512 | 0.5m~4m (Large electrode) | 4.0 | 3.1 | 1.8 |
| 2512 | 1m~500m | 4.0 | 2.1 | 4.1 |
| 0805 | 1m~20m | 1.4 | 1.2 | 1.4 |
Performance Reliability Test Methods
| Project | Test Method | Condition | Standard | Acceptance Criteria |
|---|---|---|---|---|
| Short Time Overload | IEC60115-1 4.13 | 5.0 times rated power for 5 sec | R% 1% | |
| Temperature Coefficient | IEC60115-1 4.8 | Refer to Spec. | Refer to Spec. | |
| Temperature Cycling | JESD22 Method JA-104 | 1000 Cycles (-55 to +125) | R% 1% | |
| High Temperature Exposure | MIL-STD-202 Method 108 | 1000 hrs @ 125 | R% 1% | |
| Low Temperature Operation | IEC60115-1 4.23.4 | 45 min. @ -55 | R% 1% | |
| High Temperature and High Humidity | MIL-STD-202 METHOD 103 | 1000 hours 85/85%RH (10% rated power) | R% 1% | |
| Weldability | J-STD-002B test B | Dip in flux, then solder bath 245 5 for 2~3 sec | Min 95% coverage | |
| Operational Life | MIL-STD-202 METHOD 108 | 1000 hours (702, rated current cycle) | R% 1% | |
| Resistance to Vibration | MIL-STD-202 METHOD 204 | 5g's for 20min, 12 cycles, 10-2000Hz | R% 1% | |
| Resistance to Solder Heat | IEC60115-1 4.18 | Dip in flux, then solder bath 260 5 for 101 sec | R% 1%, No visible damage | |
| Terminal Bending | AEC-Q200-005 | Min 2mm deflection, 60 sec | R% 1% | |
| Mechanical Shock | MIL-STD-202 METHOD 213 | 100g's, 6ms, half sine shock pulse | R% 1% | |
| Terminal Strength | AEC-Q200-006 | 17.7N (1.8Kg) for 601 seconds | R% 1% | |
| Thermal Shock | MIL-STD-202 METHOD 107 | 300 cycles (-55/+125), 20 sec transfer, 15 min dwell | R% 1% | |
| Flammability | UL-94 | V-0 or V-1 acceptable | ||
| ESD Test | AEC-Q200-002 | 2KV, 2 times/1s | R% 1% |
2512081620_JIERR-JER2512J3R002_C53120958.pdf
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