Open Air Metal Alloy Shunt Resistors – Current Sensing Solutions
1. Low inductance. Solder ability copper leads (60/40).
2. Radial leads, low resistance value 0.005Ω ~ 0.1Ω.
3. High stability open-air style. Precision alloys resistive element.
4. Standard tolerance ±1%, ±2%, ±5%
5.Open air design and all welded construction
Description
Open Air Metal Alloy Shunt Resistors – Current Sensing Solutions
Metal Alloy Shunt Resistors are ideal solutions for open air current sensing in high-precision, space-constrained applications. These resistors are engineered to provide extremely low resistance values ranging from 0.005Ω to 0.1Ω, ensuring accurate current sampling with ultra-low inductance. Compared to conventional axial or flat chip resistors, our open air metal alloy shunt resistors are flameproof and capable of withstanding high current loads. Their elevated structure keeps heat-sensitive areas off the PCB, allowing for enhanced airflow and thermal dissipation, which extends component life and improves stability.
This design is especially beneficial in power electronics, motor control, battery management, and compact industrial circuits, where performance and reliability are critical. By leveraging a robust metal alloy—such as manganin or constantan—our shunts ensure thermal stability, low TCR, and consistent performance across temperature ranges. Compact, durable, and optimized for modern electronics, these resistors deliver trusted performance across demanding environments.
Product Nominal
| 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 Condition
| 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
DC-DC converter modules in EVs, telecom, and industrial equipment
Power controllers and inverters for renewable energy systems
Battery management systems (BMS) for accurate current measurement
Motor drives, fan controllers, and HVAC power units
Compact UPS modules and power distribution boards
Learn more about shunt resistor applications at Electronics Tutorials
Explore our full range of current sense resistors
