Precision Shunt Resistor for EMS and High-Current Power Boards
Description
Reliable current measurement in industrial and EMS control systems
This precision shunt resistor is engineered for accurate current sensing in EMS-manufactured power boards and high-current control systems. Featuring a low-ohmic metal strip design, it ensures stable resistance performance, minimal thermal drift, and long-term reliability under continuous load. Ideal for compact PCB layouts, the resistor supports 2-terminal and 3-terminal (Kelvin) options, meeting the requirements of power electronics, motor drivers, and industrial inverters.
Key Features
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High-precision resistance for accurate current measurement
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Low temperature coefficient for thermal stability
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Compact design suitable for PCB power boards
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Available in Kelvin 3-terminal version for improved sensing
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RoHS and REACH compliant
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Custom resistance values, stamping, and mounting options available
| Parameter | Value |
|---|---|
| Resistance Range | 50μΩ – 1mΩ |
| Tolerance | ±1%, ±0.5% |
| Terminal | 2-terminal / 3-terminal (Kelvin) |
| Material | Manganin / Cu-Ni alloy |
| Current Rating | Up to 500A |
| Operating Temp | -55°C to +170°C |
| Mounting | SMD / screw / PCB weldable |
Technical parameters
| Product Nominal: (Similar products: manganese copper wire, tinned copper, copper nickel, etc.) | ||||||||||||||||||
| Type | K | 10 | 10 | 20 | U | |||||||||||||
| Material | wire | Pin pitch | resistance | shape | ||||||||||||||
| Current shunt | K:Constantan | 10:1.0mm | 10:10mm | 20:20mR | U:U type M:M type M2:M2 type LX:Spiral UZ:Folding feet HX:HX |
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(Orders are available) 1：Wire diameter of”A” 2：Rated current 3：Pin pitch Span of“W” 4：Resistance 5:Other special requirements(board height,foot length,etc.) |
A : wire data meter | ||||||||||||||||
| H : height | ||||||||||||||||||
| H1: pin length | ||||||||||||||||||
| E : Presser foot | ||||||||||||||||||
| W : Pin pitch | ||||||||||||||||||
| 2、Product shape： | |||||||||||
| UType | Uz type | Hx Type | |||||||||
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| MType | M 2 Type | LxType | |||||||||
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| Test Conditions | Maximum resistance change percentage △R% | ||||||||||
| 1000 hours at 25℃ Loading life 1000 hrs at 25℃ | 1% | ||||||||||
| 100 hrs in moisture | 1% | ||||||||||
| Cycle 1000 times at -40℃-+150℃ | 1% | ||||||||||
| Test Conditions | Maximum resistance change percentage △R% | |||||||||||||||||
| 1000 hours at 25℃ Loading life 1000 hrs at 25℃ | 1% | |||||||||||||||||
| 100 hrs in moisture | 1% | |||||||||||||||||
| Cycle 1000 times at -40℃-+150℃ | 1% | |||||||||||||||||
| Electrical properties：Power Curve & S u r f a c e T e m p e r a t u r e | ||||||||||||||||||
Applications
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EMS-assembled high-current power boards
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Motor control modules and industrial drives
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Inverter systems for renewable energy or automation
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DC-DC converters and UPS systems
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Battery management and EV controller circuits
- EMS manufacturers often rely on precision shunt resistors for real-time current monitoring.
In high-current battery packs, precision shunt resistors offer consistent performance over extended cycles.
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Explore more current sensing resistors-Precision Metal Strip Shunt Resistor for DC-DC Power Modules
