Centalic Technology Development Ltd

China Manufacturer with main products: Test Probe, Metal Parts, Test Fixture & Accessories, Test System

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spring contact probe Japan Series PJ45

FOB Price: 1.00 - 10.00 USD/Piece
Payment Terms: T/T
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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Place of Origin: Guangdong in China
Packaging Details: carton

Quick Details

  • Brand Name: Centalic
  • Model Number: PJ45
  • minimum center: 1.15 mm (45 mil)
  • current rating: 2 amps, continuous
  • contact resistance: 70 milliohms
  • mounting holes size: diameter 0.75 mm
  • rated stroke: 1.4 mm
  • spring force: 56 g (2 oz)
  • receptacle: phosphor bronze or brass, gold plated
  • contact barrel: phosphor bronze, gold plated
  • spring: stainless steel, gold plated
  • plunger: high carbon steel (standard) or full-hard beryllium copper (available), gold plated over nickel



Spring contact probe Japan Series PJ45

Technical specifications (recommended)

Minimum center: 1.15 mm(45 mil)

Current rating: 2 amps, continuous

Contact resistance: 70 milliohms

Mounting holes size: Ф0.75 mm

Rated stroke:1.4 mm

Spring force:56 g(2 oz)


Receptacle: phosphor bronze or brass, gold plated

Contact barrel: phosphor bronze, gold plated

Spring: stainless steel, gold plated

Plunger: high carbon steel (standard) or full-hard beryllium copper (available), gold plated over nickel

The construction of PJ45:

The plunger is made of high carbon steel or full-hard beryllium copper, plated with gold to eliminate surface oxides and to lower electrical resistance.

Various probe tip styles are adopted to suit any test requirement according to different applications.

Spring is constructed of stainless steel, plated with gold which prevents corrosion.

The barrel is made of phosphor bronze, plated with gold. The interior of the barrel makes good electrical contact with the plunger and spring whereas the exterior of the barrel makes good electrical contact with the receptacle.

The receptacle is made of phosphor bronze or brass plated with gold. Brass has features of high strength and hardness as well as resistance to chemical corrosion. Phosphor bronze has the features of excellent electrical conductivity, corrosion resistance, wear resistance and fatigue resistance.

HOW TO eliminate contact problems caused by dirty probes

Preventive Maintenance:  

Environment – reduce airborne contamination such as dust, clothing fibers or particles from an adjacent wave-solder machine 

PCB –keep printed circuit boards as clean as possible

Dust Covers – put dust covers over idle fixtures

Air Filters –fixing an air filter in the release port 

Probe Cleaning: 

Gently brushing the probe tips with a small brush with nylon or natural fiber bristles

Spring contact probe Japan Series PJ45 is mainly used for testing electronic products and has gained great popularity with global markets. Apart from this model, our factory provides other high quality test pins at competitive prices. If you are interested, please contact me any time or browse our website for detailed specifications. Thanks a lot!

Contact person: Stella

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