M Type Shunt Resistor for High Current Sensing | Open Air Precision Design
Description
M-Type Open Air Current Sense Shunt Resistor
This M Type shunt resistor is designed for high-current sensing in industrial power systems, delivering stable resistance, low thermal drift, and reliable performance under heavy electrical loads. Its open-air structure ensures efficient heat dissipation, making it ideal for applications such as inverters, motor drives, and battery management systems.
Common Challenges in Current Sensing
- Inaccurate current measurement under high load
- Overheating in compact PCB designs
- Resistance drift due to temperature changes
- Limited space for high-power components
How This M Type Shunt Resistor Solves Them
- Ultra-low resistance for precise current sampling
- Open-air design improves cooling efficiency
- Stable alloy material reduces temperature drift
- Compact vertical structure saves PCB space
Key Features
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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
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Resistance range: 0.005Ω to 0.1Ω
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Structure: Open air, M-type vertical mount
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Typical uses: Inverters, power supplies, CPU/motor control, battery management
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Custom options: Resistance values, lead dimensions, and packaging available upon request
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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 |
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| 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
- Industrial motor drives and control systems
- Power inverters and DC-DC converters
- Battery management systems (BMS)
- Energy monitoring and UPS systems
- Explore more current sensing resistors-Precision Shunt Resistor for EMS and High-Current Power Boards
- For an in-depth engineering perspective, refer to the IEEE paper Design Considerations for Accurate Current Sensing Using Shunt Resistors on IEEE Xplore
- Widely used in high-current industrial and power electronics applications
Need Custom M Type Shunt Resistors?
We support:
- Custom resistance values
- High current design optimization
- OEM / ODM manufacturing
- Fast sample delivery
