Suzhou Shengyifurui Electronic Technology Co.,Ltd.


High quality Board Test Switch Probes Spring contact Probe

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High quality Board Test Switch Probes Spring contact Probe

High quality Board Test Switch Probes Spring contact Probe

  • spring contact probes switch probe
  • Model Number:switch probe SF-3.20x50.50-G
  • Plunger material:1214 Iron, Au on Ni plated
  • Barrel material:Brass, Au on Ni plated
  • Tail pin: 1214 Iron, Au on Ni plated
  • Spring: SUS
  • Full stroke: 5.0mm
  • Rated Stroke: 3.5mm
  • Spring force: 320±20%
  • Switching Path: 1.7mm
  • Switch probe condition:normally open
  • Product Details

normally open spring contact probes switch probe SF-3.15x49-A


A Switch Probe is a spring contact probe and receptacle combination that is normally open, and after a designated travel the switch probe closes. The most common use for switch probes is in the cable harness testing industry. The switch probe is used to verify the correct location of a terminal in a connector while checking the retention force as well.

Switch probes also verify the presence of nonconductive components such as caps for connectors or devices on a circuit board. SFENG probes can offer different standard sizes of switch probes.

SWITCH PROBE Specification

Switch probe model  SF-3.20x50.50-G
 Plunger material  1214 Iron, Au on Ni plated
 Barrel material  Brass, Au on Ni plated
 Tail Pin  1214 Iron, Au on Ni plated
 Spring  SUS
 Full stroke  5.0mm
 Spring force  30±20%
 Switch probe condition  normally open
 Providing kinds of spring pogo pin solutions to satisfy different testing environment. We can produce according to your    needs or design drawings or samples so if you have this demand please send us the drawings or samples you have we    will quote for you ASAP.

Product drawing



a.Spring loaded pin (single) for PCB, ICT, FCT testing, etc 

b.Pogo pin ( connector) to establish a (usually temporary) connection between two printed circuit boards for charing c.Double ended probe for BGA & semiconudtion testing;

d.Universal pin without spring, coating pin, LM pin with QZ & VZ series;

e.High current probe, Switch probe, Capacitance needle

f.Terminal & receptacle/ socket;

h.Other related electronic compents, 30# OK wire, Jig locks, POM, Iron hinge, etc.



Welcome to your inquiry for switch probe pin,I will quote to you.

Suzhou Shengyifurui Electronic Technology Co., Ltd


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