Metal Alloy Resistance 2512 Series Resistors Yohey YHR2512SE3WR027F4 with Large and Small Electrode Types
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Product Description
Product Overview
The Yuanhui Electronics Technology (Jiangsu) Co., Ltd. 2512 Alloy Resistance Series is designed for high-performance applications, offering excellent stability and reliability. Compliant with RoHS requirements and tested to AEC-Q200 standards, these resistors feature low parasitic inductance ( 5nH). They are available in two types, LE (large electrode) and SE (small electrode), with various power ratings, resistance values, and tolerances to suit diverse needs.
Product Attributes
- Brand: YHR
- Origin: China ()
- Certifications: RoHS, AEC-Q200
- Material: MnCu, CuNi, Kama (specific to resistance range and type)
Technical Specifications
| Type | Product Type | Resistor Size | Power | Resistance Range | Resistance Tolerance | TCR | Operating Temperature Range | Insulation Resistance | Max. Operating Voltage |
| LE | Metal Alloy Resistance 2512 Series | 2512 | 3W/4W | 0.45m | F: 1%, G: 2%, J: 5% | 350ppm/ (0.5mR | -55~ +170 | Over 100M | (P*R) |
| SE | Metal Alloy Resistance 2512 Series | 2512 | 3W/4W | 0.020 | F: 1%, G: 2%, J: 5% | 350ppm/ (1mR1.5m), 50 ppm/ (2mR20m) | -55~ +170 | Over 100M | (P*R) |
| SE | Metal Alloy Resistance 2512 Series | 2512 | 2W/3W | 20m| F: 1%, G: 2%, J: 5% | 50 ppm/ | -55~ +170 | Over 100M | (P*R) | |
| SE | Metal Alloy Resistance 2512 Series | 2512 | 2W | 220m| F: 1%, G: 2%, J: 5% | 50 ppm/ | -55~ +170 | Over 100M | (P*R) | |
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 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 | R (1.0%+0.05m) |
| Low Temperature Exposure | -552, 1000H, stand for 1H | R (0.5%+0.05m) |
| Rapid change of Temperature | -55 30 min ~ normal temp 5 min ~155 30 min, 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 Dimensions
| Dimension | A | B | W | F | E | P1 | P2 | P0 | D0 | t |
| Tape Packing Dimensions | 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
| Dimension | 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
| Size | SE(short electrode) | LE(long electrode) |
| A | 4.0 | 3.1 |
| B | 2.1 | 1.3 |
Matters Needing Attention
- Chip resistors shall be stored in a controlled environment (temperature 5 to 35, humidity 45 to 75% RH). Humidity should be kept as low as possible.
- Avoid prolonged direct sunlight exposure.
- Do not store in humid, dusty environments, or in the presence of harmful gases (e.g., Hydrogen chloride, sulfurous acid gas, Hydrogen sulfide) that can 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 power ratings |
| A6 | 2024/12/02 | Updated parasitic inductance range |
| A7 | 2025/02/26 | Updated internal structure diagram |
| A8 | 2025/04/15 | Updated main material name descriptions corresponding to resistance ranges |
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Company
Beijing Silk Road Enterprise Management Services Co., Ltd.
Location
16 Floor, Unit B, Jiatai International Mansion, No 41, Dongsihuan Zhong Road, Chaoyang District, Beijing
Contact Person
Sellina