Description

Open Air Metal Alloy Current Sense Resistors

Looking for accurate current sensing in compact circuits?
This open-air current sense resistor offers high-current handling with low resistance and excellent heat dissipation — ideal for power electronics and space-constrained designs.

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

Specifications & Applications

• 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: (Similar products: manganese copper wire, tinned copper, copper nickel, etc.)

  Type

  K

  10

  10

  20

  U

  Material

  wire

  Pin pitch

  resistance

  shape

  Current shunt

  K:Constantan

  10:1.0mm

  10:10mm

  20:20mR

  U:U type M:M type M2:M2 type LX:Spiral UZ:Folding feet HX:HX

  (Orders are available) 1：Wire diameter of”A” 2：Rated current 3：Pin pitch Span of“W” 4：Resistance 5:Other special requirements(board height,foot length,etc.)

  A : wire data meter

  H : height

  H1: pin length

  E : Presser foot

  W : Pin pitch

  2、Product shape：
  UType		Uz type								Hx Type
  MType		M 2 Type								LxType
  Test Conditions										Maximum resistance change percentage △R%
  1000 hours at 25℃ Loading life 1000 hrs at 25℃										1%
  100 hrs in moisture										1%
  Cycle 1000 times at -40℃-+150℃										1%

  Test Conditions

  Maximum resistance change percentage △R%

  1000 hours at 25℃ Loading life 1000 hrs at 25℃

  1%

  100 hrs in moisture

  1%

  Cycle 1000 times at -40℃-+150℃

  1%

  Electrical properties：Power Curve & S u r f a c e   T e m p e r a t u r e

• Why Choose Us for Precision Shunt & Current Sense Resistors?

  • Precision Matters: Our shunt resistors are manufactured with strict tolerance control, ensuring high measurement accuracy even under demanding current sensing applications.

  • Thermal Stability: Open air design and low TCR (<50ppm/°C) ensure stable performance across wide temperature ranges.

  • Reliable Manufacturing: With 10+ years of experience in resistor production, we ensure consistent quality from sample to mass production.

  • Global Export Expertise: We serve clients in Europe, the US, and Southeast Asia — with full export documentation and support.

  • Flexible Customization: Custom resistance values, terminal types, and configurations available to match your exact application needs.

   Whether you’re designing for power meters, BMS, or industrial controllers — we deliver reliable current-sensing solutions you can count on.

  Applications

  1. Inverter and Switching Power Supplies.

  2. CPU Drive Control, Power Tool Motor controls.

  3. Residual Battery Power Detection, Current Sensing.