High Precision Metal Element Shunt Resistor for PCB Current Measurement
Description
U-Type Metal Element Shunt Resistor for High Accuracy Current Measurement
The U-Type Metal Element Shunt Resistor is a precision current sensing resistor designed for accurate current measurement and voltage signal conversion in PCB power monitoring circuits. Built with a low TCR metal alloy element, this precision shunt resistor provides stable resistance, excellent thermal performance, and reliable current detection for energy meters, power supplies, inverters, and industrial control systems.
Its compact through-hole PCB mounting structure offers advantages over traditional current sensing components by providing better heat dissipation, mechanical strength, and long-term stability in demanding applications.
Key Features of U-Type Metal Element Shunt Resistor
-
- High accuracy current sensing with stable resistance performance for precise measurement applications
- Low resistance design minimizes power loss and improves measurement efficiency
- Low TCR metal alloy element ensures stable voltage output under temperature variation
- Excellent thermal performance supports continuous current measurement in compact PCB layouts
- Through-hole U-type construction provides mechanical reliability and easy PCB integration
- Custom resistance values and current ratings available for different power monitoring requirements
- RoHS compliant and suitable for industrial electronic applications
Technical Parameters
| Type | K | 10 | 10 | 20 | U |
|---|---|---|---|---|---|
| Material | Constantan | 1.0mm | 20mΩ | U type | |
Material & Shape
| Material | Wire | Pin Pitch | Resistance | Shape |
|---|---|---|---|---|
| Current Shunt | K: Constantan | 10: 1.0mm | 10: 10mm / 20: 20mΩ | U: U type |
 |
|
(Orders are available) 1：Wire diameter of”A” 2：Rated current 3：Pin pitch Span of“W” 4：Resistance 5:Other requirements(board height,pin pitch length,etc.) |
|
M: M type,
M2: M2 type, LX: Spiral, UZ: Folding feet, HX: HX |
Product Shapes
| Product Shapes | ||
|---|---|---|
| U Type
|
UZ Type
|
HX Type
|
| M Type
|
M2 Type
|
LX Type
|
| Test Conditions | Maximum Resistance Change (ΔR%) |
|---|---|
| 1000 hours at 25℃ (Loading Life) | ≤1% |
| 100 hours in Moisture | ≤1% |
| Thermal Cycle (-40℃ ~ +150℃, 1000 cycles) | ≤1% |
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Metal Element Shunt Resistor |
| Structure | U-Type Through Hole |
| Resistance Range | Customized |
| Rated Current | Customized |
| Resistance Tolerance | ±1%, ±0.5% (Optional) |
| Temperature Coefficient | Low TCR |
| Material | Constantan / Metal Alloy |
| Application | Current Sensing & Measurement |
| Mounting Type | PCB Through Hole |
Test Conditions
| Test Conditions | Max Resistance Change (ΔR%) |
|---|---|
| 1000 hours at 25°C (Loading Life) | ≤ 1% |
| 100 hours in Moisture | ≤ 1% |
| 1000 Thermal Cycles (-40°C to +150°C) | ≤ 1% |
Why Choose a U-Type PCB Shunt Resistor?
A U-Type PCB shunt resistor provides accurate current measurement by creating a stable voltage drop proportional to current flow. Compared with conventional SMD current sense resistors, the metal element structure offers better thermal stability, higher overload capability, and improved long-term reliability.
Applications of U-Type Current Sensing Shunt Resistors
- Smart energy meters
- Industrial power monitoring systems
- Inverters and motor control boards
- HVAC control electronics
- Battery management systems (BMS)
- DC current measurement circuits
- Power supply monitoring modules
FAQ
What is a U-Type metal element shunt resistor?
A U-Type metal element shunt resistor is a low resistance current sensing component used to measure electrical current by generating a small voltage drop proportional to current flow.
What materials are used in metal element shunt resistors?
Metal element shunt resistors commonly use low temperature coefficient alloys such as manganin or constantan to maintain stable resistance performance.
Can the PCB shunt resistor be customized?
Yes. Resistance value, rated current, pin pitch, wire diameter, and mounting dimensions can be customized according to application requirements.
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