Product Overview
The Yuanhui Electronics Technology (Jiangsu) Co., Ltd. Metal Alloy Resistance 2512 Series offers high-performance alloy resistors designed for demanding applications. These resistors comply with RoHS requirements and undergo vehicle-specific AEC-Q200 testing. They feature low parasitic inductance ( 5nH) and are available in 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
Technical Specifications
| Type | Product Type | Resistor Size | Power | Resistance Tolerance | Resistance Range | Material | TCR | Operating Temperature Range | Insulation Resistance | Maximum Operating Voltage (V) |
| LE | Metal Alloy Resistance 2512 Series | 2512 | 3W/4W | F: 1%, G: 2%, J: 5% | 0.45m | Purple Copper / MnCu | 350ppm/ (R | -55~ +170 | Over 100M | (P*R) |
| SE | Metal Alloy Resistance 2512 Series | 2512 | 2W/3W/4W | D: 0.5%, F: 1%, G: 2%, J: 5% | 1mR0.220 (2W/3W), 0.220| MnCu / CuNi / Kama | 350ppm/ (1mR1.5m), 50 ppm/ (2mR20m, 20m| -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), TCR=(R2-R1)/(R1(T2-T1))*10^6 | Refer to TCR specifications for physical features |
| ShortTimeOverload | 5 times rated power, maintain 5s (R000, max current 200A) | R(1%+0.05m) |
| Insulation resistance | Apply 100V15V DC between electrode and substrate for 60s | > 100 M |
| Withstand voltage | Apply AC voltage (effective value of max overload voltage) at approx. 100V/S, hold for 605s | No breakdown or arc |
| Solderability | 2455 tin bath, hold 2s0.5s | At least 95% of electrode surface area covered with new solder |
| Resistance to Soldering Heat | 2705 tin bath, hold 10s1s | R (0.5%+0.05m), no visible damage |
| Bending test | Bending distance 2mm, hold time 60s5s | R(0.5%+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 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) |
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
| A | B | C | D | E | T | W |
| 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
1. Storage conditions: Temperature 5-35, Relative Humidity 45-75% RH. Maintain low humidity.
2. Avoid direct sunlight exposure.
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.
