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 in power monitoring and industrial electronics. Its low-TCR metal alloy element provides stable resistance and reliable performance for energy meters, power supplies, inverters, and industrial control systems.
The bare metal element resistor features a welded construction and open-air design for efficient heat dissipation, helping reduce heat transfer to the PCB. Its low-inductance, low-ohm design supports high-current sensing and demanding power applications, with resistance values available down to 2 mΩ.
The through-hole structure provides strong mechanical mounting and easy installation. Custom resistance ranges and dimensions are available for specific technical requirements.
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.
Explore more current sensing resistors-Precision Shunt Resistor for EMS and High-Current Power Boards
