Description
Overview
🧲 What is a Current Sense Shunt Resistor?
A Current Sense Shunt Resistor is a precision device used to measure current by detecting the voltage drop across a known low resistance. Our M-Type Open Air Current Sense Shunt Resistor is engineered for high-current, high-reliability applications such as motor drives, power inverters, and energy monitoring systems.
Key Features
✅ Ultra-low resistance (0.005Ω–0.1Ω) for precise current sampling
✅ Flameproof and non-inductive, safe for high-speed switching circuits
✅ Open-air vertical structure improves airflow and cooling efficiency
✅ Compact footprint saves PCB space while supporting high current loads
✅ Reliable M-type design, ideal for elevated mounting and thermal management
Technical Specifications
Resistance range: 0.005Ω to 0.1Ω
Structure: Open air, M-type vertical mount
Typical uses: Inverters, power supplies, CPU/motor control, battery management
Custom options: Resistance values, lead dimensions, and packaging available upon request
Product Nominal
| 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
Applications
Industrial power management systems
Automotive battery monitoring and control
Motor controllers and drives
Energy metering and monitoring devices
UPS and power supply units
Consumer electronics requiring precise current sensing
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
Contact Us for Customization
Need a specific rating or mounting style? Contact our engineering team for custom solutions tailored to your current measurement needs.
