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Guangdong Uchi Electronics Co.,Ltd

  • China,Dongguan ,Guangdong
  • Verified Supplier
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China Bare Alloy Resistor Also Known As Bare Pure Alloy Current-Sensing
China Bare Alloy Resistor Also Known As Bare Pure Alloy Current-Sensing

  1. China Bare Alloy Resistor Also Known As Bare Pure Alloy Current-Sensing
  2. China Bare Alloy Resistor Also Known As Bare Pure Alloy Current-Sensing

Bare Alloy Resistor Also Known As Bare Pure Alloy Current-Sensing

  1. MOQ: 5000PCS
  2. Price: Negotiable
  3. Get Latest Price
Payment Terms T/T,Paypal,Western Union,Money gram
Supply Ability 5000,000,000PCS Per Month
Delivery Time 5-7 days
Packaging Details Bulk/Ammo/Reel
Voltagerating Varies (e.g., 10V to 1000V)
Peak Energy 380J
Rotational Speed 4500min
Lifespan Typically 10 years or more under normal conditions
Max Power 0.4W
Color White
Temperature Coefficient MLV
Allowable Deviation ±10%
Oem Service Yes
Dimension 34mm
Power Consumption 0.25(W)
Brand Name UCHI
Model Number UL.VDE,SGS,REACH,CQC,CSA.ISO.ROHS,CUL
Certification 471KD10
Place of Origin Dongguan,Guangdong,China

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T,Paypal,Western Union,Money gram Supply Ability 5000,000,000PCS Per Month
Delivery Time 5-7 days Packaging Details Bulk/Ammo/Reel
Voltagerating Varies (e.g., 10V to 1000V) Peak Energy 380J
Rotational Speed 4500min Lifespan Typically 10 years or more under normal conditions
Max Power 0.4W Color White
Temperature Coefficient MLV Allowable Deviation ±10%
Oem Service Yes Dimension 34mm
Power Consumption 0.25(W) Brand Name UCHI
Model Number UL.VDE,SGS,REACH,CQC,CSA.ISO.ROHS,CUL Certification 471KD10
Place of Origin Dongguan,Guangdong,China
High Light bare alloy current-sensing resistorpure alloy resistor with warrantymetal oxide varistor resistor

Bare Alloy Resistor

 
Bare alloy resistor (also known as bare pure alloy current-sensing/shunt resistor) is a high-power milliohm-level resistor without resin/plastic encapsulation coating, with its alloy resistive element directly exposed. It is specially designed for high-current precision current sensing.
 

Core Structure & Materials

 
  • Resistive element: Manganin, Constantan, Nichrome, Karma alloy.
     
    Electrodes are mostly high-conductivity pure copper, connected by electron beam welding / laser welding.
     
    Common packages: 3920, 5930, 2725, available in flat sheet and zig‑zag structures.
     
  • Resistance range: Typically 0.1 mΩ – 5 mΩ;
     
    Tolerance up to ±0.01%;
     
    TCR as low as ±10–25 ppm/℃;
     
    Parasitic inductance < 3 nH, non‑inductive design.
     
  • Power rating: Starts from 5 W, some models 10–15 W;
     
    Operating temperature: -55℃ to 170℃, compliant with AEC‑Q200.
     
 

Key Advantages & Precautions

 
  1. Excellent heat dissipation: Large exposed surface area enables fast heat release and higher power density.
  2. Ultra‑stable resistance: Low temperature coefficient, low thermal EMF, high surge current capability; suitable for harsh working conditions.
  3. Soldering restrictions: Generally only compatible with reflow soldering; avoid high-temperature damage from wave soldering. Anti‑oxidation and mechanical protection required. Not suitable for unprotected dusty or humid environments.
 

Typical Applications

 
Current sensing and shunting in new energy vehicle BMS, industrial power supplies, frequency converters, servo drives, photovoltaic inverters, and charging piles.
 

Selection & Purchasing Tips

 
  • Select package and power rating based on maximum current, power dissipation, and PCB space. Prioritize low TCR, low inductance, and Kelvin 4‑terminal design.
  • Soldering process must match reflow soldering. Apply coating or housing for protection if necessary.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer,Exporter

  • Year Established:

    2006

  • Total Annual:

    1,500,000-2,500,000

  • Employee Number:

    138~168

  • Ecer Certification:

    Verified Supplier

Uchi was established in 2006 in Dongguan, China.  After years of development, Uchi has become a large scale hi-tech enterprise that specialized in development and production of complete series of MOV,PTC, NTC series, PPTC series, Fuse(ALL TYPE),Resistor、integrated circuit 、 Capacitor, ... Uchi was established in 2006 in Dongguan, China.  After years of development, Uchi has become a large scale hi-tech enterprise that specialized in development and production of complete series of MOV,PTC, NTC series, PPTC series, Fuse(ALL TYPE),Resistor、integrated circuit 、 Capacitor, ...

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Get in touch with us

  • Reach Us
  • Guangdong Uchi Electronics Co.,Ltd
  • Room 810, Unit 2, Building 5, Huixing Commercial Center, Dongsheng Road No.1, Zhongshan Dong, Shilong Town Dongguan, GUANGDONG, 523326 CN
  • https://www.uchidg.com/

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