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Specifications
Resistance:
400mΩ
Power(Watts):
2W
Type:
Alloy Resistor
Temperature Coefficient:
±50ppm/℃
Tolerance:
±1%
Mfr. Part #:
YHR2512SE2WR400F4
Package:
2512
Key Attributes
Model Number:
YHR2512SE2WR400F4
Product Description
Product Overview
The Yuanhui Electronics Technology (Jiangsu) Co., Ltd. 2512 Alloy Resistance series offers high-power, low-resistance solutions compliant with RoHS and AEC-Q200 standards. Featuring parasitic inductance less than or equal to 5nH, these resistors are designed for demanding applications.
Product Attributes
- Brand: YHR
- Origin: China
- Certifications: RoHS, AEC-Q200
Technical Specifications
| Type | Size | Power | Resistance Range | Resistance Tolerance | Material | TCR | Operating Temperature Range | Insulation Resistance | Max Operating Voltage |
| LE (Large Electrode) | 2512 | 3W/4W | <0.45m | F: 1%, G: 2%, J: 5% | MnCu (for R0.5m) | 350ppm/ (for 0.5mR<1m) | -55~ +170 | Over 100M | (P*R) |
| SE (Small Electrode) | 2512 | 3W/4W | R001RR020 | F: 1%, G: 2%, J: 5% | MnCu (for R0.220m) | 50ppm/ (for 1mR0.220m) | |||
| SE (Small Electrode) | 2512 | 2W/3W | R001RR220 | F: 1%, G: 2%, J: 5% | MnCu (for R0.220m) | 50ppm/ (for 1mR0.220m) | -55~ +170 | Over 100M | (P*R) |
| SE (Small Electrode) | 2512 | 2W | R220RR500 | F: 1%, G: 2%, J: 5% | CuNi (for 0.220mR0.400m), Kama (for 0.400mR0.500m) | 50 ppm/ | -55~ +170 | Over 100M | (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) | R1%+0.05m |
| Insulation resistance | Apply 100V15V DC voltage between electrode and substrate, hold for 60 seconds, then measure | > 100 M |
| Withstand voltage | Apply AC voltage with effective value of max overload voltage at approx. 100V/S, hold for 605s | No breakdown or arc |
| Solderability | 2455 tin tank, hold 2s0.5s | At least 95% of electrode surface area 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, 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 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) |
Packing and Handling
Tape Packing Dimensions (mm)
| 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 (mm)
| 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 Size (mm)
| Size | SE(Short Electrode) | LE(Long Electrode) |
| A | 4.0 | 3.1 |
| B | 2.1 | 1.3 |
Belt Tension
Not specified
Matters Needing Attention
- Storage: Temperature 5-35, Relative Humidity 45-75% RH. Keep humidity low.
- Avoid direct sunlight exposure.
- Do not store in humid, dusty, or environments with harmful gases (HCl, SO2, H2S) 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 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 |
2508041620_Yohey-YHR2512SE2WR400F4_C49837994.pdf
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