Product Description
The Yuanhui Electronics Technology (Jiangsu) Co., Ltd. Alloy Resistance 2512 Series is designed for high-reliability applications. These resistors comply with RoHS requirements and undergo vehicle-specific AEC-Q200 tests. They feature parasitic inductance less than or equal to 5nH, making them suitable for demanding electronic circuits. The series offers two types: LE (large electrode) and SE (small electrode), with various power ratings, resistance values, and tolerances.
Product Attributes
- Brand: YHR
- Origin: China ()
- Certifications: RoHS, AEC-Q200
- Material: Purple copper, MnCu, CuNi, Kama (depending on resistance range and type)
Technical Specifications
| Type | Product Type | Resistor Size | Power | Resistance Tolerance | Resistance Range | Parasitic Inductance | TCR | Operating Temperature Range | Insulation Resistance | Max Operating Voltage |
| LE | Metal Alloy Resistance 2512 Series | 2512 | 3W/4W | F:1%, G:2%, J:5% | <0.45m R000, 0.5mR4m | ≤5nH | ±350ppm/ (R<1m), ±50ppm/ (1mR4m) | -55~ +170 | >100M | (P*R) |
| SE | Metal Alloy Resistance 2512 Series | 2512 | 2W/3W/4W | D:0.5%, F:1%, G:2%, J:5% | 1mR220m (2W/3W), 220m<R500m (2W) | ≤5nH | ±350ppm/ (1mR1.5m), ±50ppm/ (2mR500m) | -55~ +170 | >100M | (P*R) |
Construction and Dimension
| Product Type | Size (L x W x E x H) |
| 2512 LE | 6.4±0.2 x 3.2±0.2 x 2.2±0.2 x 0.8±0.08 |
| 2512 SE | 6.4±0.2 x 3.2±0.2 x 1.0±0.2 x 0.8±0.08 |
Reliability Tests
| Project | Test Method | Specifications and Requirements |
| Short Time Overload | 5 times rated power, maintain 5s | △R≤±(1%+0.05m) |
| Insulation Resistance | Apply 100V±15V DC voltage between electrode and substrate, hold for 60 seconds | > 100 MΩ |
| Withstand Voltage | Apply AC voltage with effective value of max overload voltage | 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 | △R≤±(0.5%+0.05m), no visible damage |
| Bending Test | Bending distance 2mm, hold time 60s±5s | △R≤±(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 | △R ≤±(1.0%+0.05m) |
| Low Temperature Exposure | -55±2, 1000H | △R ≤±(0.5%+0.05m) |
| Rapid Change of Temperature | -55 30 minutes ~ normal temperature 5 minutes ~155 30 minutes, 1000 cycles | △R ≤±(0.5%+0.05m) |
| Load Life | 70±2, 1000 hours, rated power, 1.5 hours on / 0.5 hours off | △R ≤±(1.0%+0.05m) |
| Moisture with Load | 85±2, 85%±3%RH, 1000 hours, rated power, 1.5 hours on / 0.5 hours off | △R≤±(1.0%+0.05m) |
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(large electrode) |
| A | 4.0 | 3.1 |
| B | 2.1 | 1.3 |
Matters Needing Attention
- Chip resistor shall be stored in a room where temperature and humidity must be controlled. (temperature 5 to 35, humidity 45 to 75% RH). However, a humidity keep it low, as it is possible.
- Chip resistor shall be stored as direct sunshinedoesnt hit on it.
- Chip resistor shall be stored with no moisture, dust, a material that will make solder ability inferior, and a harmful gas (Hydrogen chloride, sulfurous acid gas, and Hydrogen sulfide).
- Storage life: 1 year.
Version History
| Version | Date | Description of amendment |
| A1 | 2022/12/5 | First edition 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 description of main material name corresponding to resistance segment range |
2504271506_Yohey-YHR2512SE3WR100F4_C42453924.pdf
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