Product Overview
The Yuanhui Electronics Technology (Jiangsu) Co., Ltd. 2512 Alloy Resistance series offers high-performance metal alloy resistors designed for demanding applications. Compliant with RoHS requirements and tested to vehicle-specific AEC-Q200 standards, these resistors feature parasitic inductance less than or equal to 5nH. Available in LE (large electrode) and SE (small electrode) types, they provide robust solutions for power and precision requirements.
Product Attributes
- Brand: YHR
- Origin: China (implied by company name)
- Certifications: RoHS, AEC-Q200
- Material: Copper, Manganese-Copper (MnCu), Copper-Nickel (CuNi), Kama (specific alloys for resistance ranges)
Technical Specifications
| Type | Power | Resistance Range | Resistance Tolerance | TCR | Operating Temperature Range | Max Operating Voltage | Parasitic Inductance |
| 2512 LE | 3W/4W | <0.45m | F:1%, G:2%, J:5% | - | -55~ +170 | (P*R) | 5nH |
| 2512 LE | 2W/3W | 0.5m R < 1m (MnCu) | D:0.5%, F:1%, G:2%, J:5% | 350ppm/ | -55~ +170 | (P*R) | 5nH |
| 2512 LE | 2W/3W | 1mR 4m (MnCu) | D:0.5%, F:1%, G:2%, J:5% | 50ppm/ | -55~ +170 | (P*R) | 5nH |
| 2512 SE | 2W/3W/4W | 1mR 1.5m (MnCu) | D:0.5%, F:1%, G:2%, J:5% | 350ppm/ | -55~ +170 | (P*R) | 5nH |
| 2512 SE | 2W/3W/4W | 2mR 20m (MnCu) | D:0.5%, F:1%, G:2%, J:5% | 50 ppm/ | -55~ +170 | (P*R) | 5nH |
| 2512 SE | 2W/3W | 20m<R 150m (MnCu) | D:0.5%, F:1%, G:2%, J:5% | 50 ppm/ | -55~ +170 | (P*R) | 5nH |
| 2512 SE | 2W/3W | 150m<R 220m (CuNi) | D:0.5%, F:1%, G:2%, J:5% | 50 ppm/ | -55~ +170 | (P*R) | 5nH |
| 2512 SE | 2W | 220m<R 400m (CuNi) | D:0.5%, F:1%, G:2%, J:5% | 50 ppm/ | -55~ +170 | (P*R) | 5nH |
| 2512 SE | 2W | 400m<R 500m (Kama) | D:0.5%, F:1%, G:2%, J:5% | 50 ppm/ | -55~ +170 | (P*R) | 5nH |
Construction and Dimension
| Product Type | Illustration | Size (L x W x E x H) |
| 2512 LE | 6.40.2 x 3.20.2 x 2.20.2 x 0.80.08 | |
| 2512 SE | 6.40.2 x 3.20.2 x 1.00.2 x 0.80.08 |
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) | R1%+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 maximum overload voltage between electrode and substrate at approx. 100V/S, hold for 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 for 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 | R (1.0%+0.05m) |
| Low Temperature Exposure | -552, 1000H, stand for 1H | 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 | 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(large electrode) |
| A | 4.0 | 3.1 |
| B | 2.1 | 1.3 |
| L | 4.1 | - |
Matters Needing Attention
- Chip resistors shall be stored in a room where temperature and humidity must be controlled (temperature 5 to 35, humidity 45 to 75% RH). However, humidity should be kept low if possible.
- Chip resistors shall be stored so direct sunlight doesnt hit them.
- Chip resistors shall be stored with no moisture, dust, materials that will make solder ability inferior, and harmful gases (Hydrogen chloride, sulfurous acid gas, and Hydrogen sulfide).
- 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-YHR2512SE3WR0015F4_C42453870.pdf
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