HoJLR Series Resistor
HoJLR Series(HoJLR0805,HoJLR1206,HoJLR2010,HoJLR2512)
The HoJLR Series by Shenzhen Milliohm Electronic Co., Ltd. features high-reliability encapsulated metal alloy chip construction designed for precise current detection in high-power circuits. Available in standard SMD package sizes from 0805 to 2512, the HoJLR series delivers power ratings up to 3W with resistance values as low as 0.5mR. Built with a non-inductive alloy element and protective molded encapsulation layer, these resistors provide superior thermal stability, low temperature drift (±50 ppm/°C), and exceptional overload surge withstand capability.
Series | Package | Power | Resistance (min) | Resistance (max) | Tolerance | TCR (ppm/℃) | Milliohm Part |
HoJLR0805 | 0805 | 1/2W,1/4W | 0 mΩ | 60 mΩ | ±0.5% ±1% ±2% ±5% | ±50ppm ±100ppm | HOJLR0805 |
HoJLR2010 | 2010 | 1.5W | 1 mΩ | 100 mΩ | HOJLR2010 | ||
HoJLR1206 | 1206 | 3/4W, 1W | 0 mΩ | 100 mΩ | HOJLR1206 | ||
1W, 1/2W | 101mΩ | 200 mΩ | |||||
HoJLR2512 HoJLR2512(S) | 2512 | 2W-3W | 0mΩ | 510 mΩ | HOJLR2512 HOJLR2512(S) | ||
3W | 0 mΩ | 4 mΩ |
The ultra low TCR SMD resistors from Shenzhen Milliohm Electronics redefine precision in high-stability current sensing, delivering unmatched resistance drift control for mission-critical applications. Engineered with advanced alloy materials and multi-layer encapsulation, these ultra low TCR SMD resistors achieve temperature coefficients as tight as ±15 ppm/℃ (custom models) to ±50 ppm/℃ (standard 1206/2512 variants), making them ideal current sense resistors for EV battery management, industrial robotics, and aerospace systems.
Core Innovations in Ultra Low TCR SMD Resistors
Sub-20 ppm/℃ Stability:
- Select ultra low TCR SMD resistors offer TCR ≤±20 ppm/℃ (25℃–125℃) through proprietary alloy formulations, reducing thermal drift by 60% compared to conventional metal strip resistors.
- Example: The 2512 precision shunt resistor variant maintains ±0.5% tolerance across 1mΩ–100mΩ with TCR ±25 ppm/℃. Ultra low TCR SMD resistors
Milliohm-Level Accuracy:
- With resistance ranges from 0.2mΩ to 500mΩ, these ultra low TCR SMD resistors enable ±0.1% measurement precision in current sense resistor applications like motor drives and solar inverters.
Extended Environmental Resilience:
- Epoxy-molded ultra low TCR SMD resistors withstand -55℃ to +170℃ operation, 85℃/85% RH humidity (1,000hrs), and 100G mechanical shocks per MIL-STD-202G.
Applications Demanding Ultra Low TCR Performance
- EV Powertrains: As current sense resistors, they monitor battery pack currents with <±0.3% drift over 10,000 thermal cycles (-40℃↔+150℃).
- Precision Instrumentation: The ultra low TCR SMD resistors serve as precision shunt resistors in medical imaging and semiconductor test equipment, where ±15 ppm/℃ TCR ensures long-term calibration integrity. Ultra low TCR SMD resistors
- Renewable Energy: In wind turbine converters, these resistors maintain <±0.2% resistance shift despite daily 50℃ temperature swings.
Certifications & Testing
- AEC-Q200 Qualified: Automotive-grade ultra low TCR SMD resistors pass 5,000hr high-temperature reverse bias (HTRB) tests.
- IEC 60115-8 Compliance: Validated for surge current (100A, 2ms) and power cycling (3W, 10,000 cycles).
Design Advantages
- Low-Inductance (<0.5nH) Architecture: Critical for high-frequency current sense resistor applications in 5G base stations and RF amplifiers.
- Customizable TCR/Power Profiles: Tailor TCR to ±10 ppm/℃ or power ratings up to 5W (2512 package) for specialized industrial use cases.
For engineers prioritizing nanosecond-level stability and sub-milliohm precision, the ultra low TCR SMD resistors offer a future-proof solution. Their synergy of precision shunt resistor accuracy, current sense resistor robustness, and RoHS-compliant construction makes them indispensable in next-gen electronics.
