Product Overview
The YHR-2512 series of Metal Alloy Resistors offers high power handling (up to 3W/4W) in a compact 2512 size. These resistors comply with RoHS requirements and are tested to AEC-Q200 standards for automotive applications. They feature low parasitic inductance (<= 5nH) and are available in two types: LE (large electrode) and SE (small electrode), with a wide range of resistance values and tolerances.
Product Attributes
- Brand: YHR
- Origin: (Yuanhui Electronics Technology (Jiangsu) Co., Ltd.)
- Certifications: RoHS, AEC-Q200
- Material: Copper, MnCu, CuNi, Kama (depending on resistance range)
Technical Specifications
| Type | Product Type | Resistor Size | Power | Resistance Range | Resistance Tolerance | TCR | Operating Temperature Range | Max. Operating Voltage (V) | Parasitic Inductance |
| LE | Metal Alloy Resistance 2512 Series | 2512 | 3W/4W | <0.45m (R000) | F: 1%, G: 2%, J: 5% | 350ppm/ (for R<0.2m) | -55~ +170 | (P*R) | <= 5nH |
| SE | Metal Alloy Resistance 2512 Series | 2512 | 3W/4W | R001RR020 | F: 1%, G: 2%, J: 5% | 350ppm/ (for 1mR1.5m), 50 ppm/ (for 2mR20m) | -55~ +170 | (P*R) | <= 5nH |
| SE | Metal Alloy Resistance 2512 Series | 2512 | 2W/3W | R001RR220 | D: 0.5%, F: 1%, G: 2%, J: 5% | 50 ppm/ (for 20m<R150m), 50 ppm/ (for 150m<R 220m) | -55~ +170 | (P*R) | <= 5nH |
| SE | Metal Alloy Resistance 2512 Series | 2512 | 2W | R220RR500 | D: 0.5%, F: 1%, G: 2%, J: 5% | 50 ppm/ (for 220m<R 400m), 50 ppm/ (for 400m<R 500m) | -55~ +170 | (P*R) | <= 5nH |
Reliability Tests
| Project | Test Method | Specifications and Requirements |
| Temperature coefficient (TCR) | Measured at 25(T1, R1) and 125(T2, R2), TCR=(R2-R1)/R1T2-T1*10^6 | Refer to TCR specifications for physical features |
| ShortTimeOverload | 5 times rated power, maintain 5s (R000, max current 200A) | R1%+0.05m |
| Insulation resistance | Apply 100V15V DC voltage between electrode and substrate, hold for 60 seconds, then measure insulation resistance | > 100 M |
| Withstand voltage | AC voltage with effective value of max overload voltage applied at approx. 100V/S, hold 605s | No breakdown or arc |
| Solderability | 2455 tin tank, hold 2s0.5s | At least 95% of surface area of electrode shall be covered with new solder |
| Resistance to Soldering Heat | 2705 tin tank, hold 10s1s | R (0.5%+0.05m), no visible damage |
| Bending test | Bending distance 2mm, hold time 60s5s | R0.5%+0.05m, no mechanical damage |
| Solvent resistance | Isopropanol (IPA) at 235 for 10 hours | No obvious damage to appearance |
| High Temperature Exposure | 1702, 1000H, stand for 1H, test resistance value | R (1.0%+0.05m) |
| Low Temperature Exposure | -552, 1000H, stand for 1H, test resistance value | R (0.5%+0.05m) |
| Rapid change of Temperature | -55 30 minutes ~ normal temp 5 minutes ~155 30 minutes, 1000 cycles | R (0.5%+0.05m) |
| Load Life | 702, 1000 hours, rated power, 1.5 hours on / 0.5 hours off | R (1.0%+0.05m) |
| Moisture with Load | 852, 85%3%RH, 1000 hours, rated power, 1.5 hours on / 0.5 hours off | R (1.0%+0.05m) |
Packaging and Handling
Tape Packing Dimensions
| A | B | W | F | E | P1 | P2 | P0 | D0 | t |
| 3.50.15 | 6.80.1 | 12.00.2 | 5.50.05 | 1.750.1 | 4.00.1 | 2.00.05 | 4.00.05 | 1.5~1.6 | 1.00.1 |
Reel Dimensions
| Type | A | B | C | D | E | T | W |
| Reel | 1782.0 | 601.0 | 131.0 | 2.00.5 | >22 | 15.40.5 | 13.30.5 |
Pad Pattern
| Size | SE(short electrode) | LE(long electrode) |
| A | 4.0 | 3.1 |
| B | 2.1 | 1.3 |
Matters Needing Attention
- Storage: Temperature 5-35, Relative Humidity 45-75% RH. Keep humidity low.
- Avoid direct sunlight.
- Do not store in humid, dusty environments or in the presence of harmful gases (Hydrogen chloride, sulfurous acid gas, Hydrogen sulfide) that degrade solderability.
- Storage life: 1 year.
Version History
| Version | Date | Description of amendment |
| A1 | 2022/12/5 | Initial release |
| A2 | 2023/01/05 | Updated resistance range R100-R220 |
| A3 | 2023/02/03 | Modified packaging quantity |
| A4 | 2023/05/06 | Updated resistance range R220-R500 |
| A5 | 2024/01/23 | Updated resistance power |
| A6 | 2024/12/02 | Updated parasitic inductance range |
| A7 | 2025/02/26 | Updated internal structure diagram |
| A8 | 2025/04/15 | Updated main material name description corresponding to resistance range |
2504271506_Yohey-YHR2512SE3WR022F4_C42453907.pdf
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