M Type Shunt Resistor for High Current Sensing | Open Air Precision Design
Description
M-Type Open Air Current Sense Shunt Resistor
The M Type shunt resistor is a precision open-air metal strip current sense resistor designed for high-current DC measurement in industrial power electronics, battery systems, and motor control applications. Featuring low resistance values, stable TCR performance, and excellent thermal management, it provides accurate current sensing and reliable operation under demanding electrical conditions. The open-air structure improves heat dissipation, making it suitable for inverters, motor drives, battery management systems (BMS), and other high-power applications.
Common Challenges in Current Sensing
- Inaccurate current measurement under high current conditions
- Excessive heat generation in compact power designs
- Resistance drift caused by temperature variation
- Limited PCB space for high-power current sensing components
How This M-Type Shunt Resistor Solves Them
- Ultra-low resistance design enables accurate DC current measurement
- Open-air construction improves heat dissipation and thermal performance
- Stable alloy materials minimize resistance drift over temperature changes
- Compact structure supports space-saving PCB integration
Key Features of M type shunt Resistor
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✅ Ultra-low resistance (0.005Ω–0.1Ω) for precise current sampling
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✅ Flameproof and non-inductive, safe for high-speed switching circuits
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✅ Open-air vertical structure improves airflow and cooling efficiency
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✅ Compact footprint saves PCB space while supporting high current loads
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✅ Reliable M-type design, ideal for elevated mounting and thermal management
Technical Specifications of M type shunt Resistor
| Item | Specification |
|---|---|
| Resistance Range | 0.005Ω – 0.1Ω |
| Structure | Open-air M-Type vertical mount design |
| Resistance Type | Low resistance current sensing resistor |
| Inductance | Non-inductive design |
| Applications | Inverters, power supplies, motor control systems, battery management systems |
| Custom Options | Resistance values, lead dimensions, and packaging available upon request |
Product Nominal of M type shunt resistor
| Type | K | 10 | 10 | 20 | U |
|---|---|---|---|---|---|
| Material | Constantan | 1.0mm | 20mΩ | U type | |
Materials
| Category | Code / Value | Description |
|---|---|---|
| Material | K | Constantan (Manganese copper wire, Cu-Ni alloy) |
| Pin Pitch | 10 | 1.0 mm |
| Resistance | 20 | 20 mΩ |
| Shape | U | U-type |
| Other Shapes | M, M2, LX, UZ, HX | M: M-type, LX: Spiral, UZ: Folding feet, HX: Custom |
| Ordering Notes |
|
|
| Parameter Guide | A: Wire size meter, H: Height, H1: Pin length, E: Presser foot, W: Pin pitch | |
Product Shape
| Shape 1 | Shape 2 | Shape 3 |
|---|---|---|
U Type |
UZ Type |
HX Type |
| M Type
|
M2 Type |
LX Type |
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% |
Electrical Properties:
Power Curve & Surface Temperature
Typical Applications
M-Type open-air shunt resistors are widely used for high-accuracy current sensing and power management in:
- Industrial motor drives and control systems
- Power inverters and DC-DC converters
- Battery management systems (BMS) and energy storage equipment
- UPS systems and DC power monitoring applications
- Industrial power electronics and high-current control boards
Related Current Sensing Solutions
Explore our related current sensing resistor solutions, including precision shunt resistors, metal strip shunt resistors, and high-current sensing components.
Need M-Type Shunt Resistor Solutions?
We support:
- Customized resistance values and tolerances
- High-current application optimization
- OEM / ODM manufacturing support
- Rapid prototype and sample delivery
