Product Description
The Yuanhui Electronics Technology (Jiangsu) Co., Ltd. Alloy Resistance 2512 Series is a high-performance metal alloy resistor designed for demanding applications. It complies with RoHS requirements and undergoes vehicle-specific AEC-Q200 tests, ensuring reliability and quality. Key advantages include parasitic inductance less than or equal to 5nH, making it suitable for high-frequency circuits. Available in LE (large electrode) and SE (small electrode) types, with various power ratings and resistance tolerances.
Product Attributes
- Brand: YHR
- Origin: China ()
- Certifications: RoHS, AEC-Q200
Technical Specifications
| Type | Resistance Size | Power | Resistance Tolerance | Resistance Range | Parasitic Inductance | Material | TCR | Operating Temperature Range | Insulation Resistance | Max Operating Voltage |
| 2512 LE | 6.4 x 3.2 mm | 3W/4W | F: 1%, G: 2%, J: 5% | <0.45m (R000) | ≤ 5nH | Purple Copper / MnCu | ± 350ppm/ (for R<1m) / ± 50ppm/ (for 1m≤R≤4m) | -55~ +170 | > 100 M | (P*R) |
| 2512 SE | 6.4 x 3.2 mm | 2W/3W/4W | D: 0.5%, F: 1%, G: 2%, J: 5% | 1m≤R≤0.220 (2W/3W), 0.220<R≤0.500 (2W) | ≤ 5nH | MnCu / CuNi / Kama | ± 350ppm/ (for 1m≤R≤1.5m) / ± 50ppm/ (for 2m≤R≤20m, 20m<R≤150m, 150m<R≤220m, 220m<R≤400m, 400m<R≤500m) | -55~ +170 | > 100 M | (P*R) |
Reliability Tests
| Project | Test Method | Specifications and Requirements |
| Temperature coefficient (TCR) | Measured at 25(T1, R1) and 125(T2, R2) | Refer to TCR specifications for physical features |
| ShortTimeOverload | 5 times rated power, maintain 5s (R000, max current 200A) | ΔR≤±(1%+0.05m) |
| Insulation resistance | Apply 100V15V DC voltage between electrode and substrate, hold for 60 seconds | > 100 M |
| Withstand voltage | Apply AC voltage with effective value of max overload voltage at approx. 100V/S, hold for 60±5s | No breakdown or arc |
| Solderability | 245±5 tin tank, hold 2s±0.5s | At least 95% of surface area of electrode shall be covered with new solder |
| Resistance to Soldering Heat | 270±5 tin tank, hold for 10s±1s | ΔR≤±(0.5%+0.05m), no visible damage |
| Bending test | Bending distance 2mm, hold time 60s±5s | ΔR≤±(0.5%+0.05m), no mechanical damage |
| Solvent resistance | Isopropanol (IPA) at 23±5 for 10 hours | No obvious damage to appearance |
| High Temperature Exposure | 170±2, 1000H, stand for 1H | ΔR ≤±(1.0%+0.05m) |
| Low Temperature Exposure | -55±2, 1000H, stand for 1H | ΔR ≤±(0.5%+0.05m) |
| Rapid change of Temperature | -55 30 minutes ~ normal temperature 5 minutes ~155 30 minutes, 1000 cycles | ΔR ≤±(0.5%+0.05m) |
| Load Life | 70±2, 1000 hours, rated power, 1.5 hours on / 0.5 hours off | ΔR ≤±(1.0%+0.05m) |
| Moisture with Load | 85±2, 85%±3%RH, 1000 hours, rated power, 1.5 hours on / 0.5 hours off | ΔR≤±(1.0%+0.05m) |
Packaging and Storage
Tape Packing Dimensions
| A | B | W | F | E | P1 | P2 | P0 | D0 | t |
| 3.5±0.15 | 6.8±0.1 | 12.0±0.2 | 5.5±0.05 | 1.75±0.1 | 4.0±0.1 | 2.0±0.05 | 4.0±0.05 | 1.5~1.6 | 1.0±0.1 |
Reel Dimensions
| Type | A | B | C | D | E | T | W |
| Reel | 178±2.0 | 60±1.0 | 13±1.0 | 2.0±0.5 | >22 | 15.4±0.5 | 13.3±0.5 |
Pad Pattern
| Size | SE(short electrode) | LE(long electrode) |
| A | 4.0 | 3.1 |
| B | 2.1 | 1.3 |
Matters Needing Attention
1. Storage conditions: Temperature 5-35, Relative Humidity 45-75% RH. Keep humidity low. 2. Avoid direct sunlight. 3. Do not store in humid, dusty environments or in the presence of harmful gases (Hydrogen chloride, sulfurous acid gas, Hydrogen sulfide) that degrade solderability. 4. Storage life: 1 year.
Version History
| Version | Date | Description of amendment |
| A1 | 2022/12/05 | 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 power rating |
| 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-YHR2512SE3WR120F4_C47574941.pdf
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