Support: PCIe Gen4 and SAS4.0

Kelvin Test Socket for SOP package

Kelvin Contact is derived from the English Physicist Lord Kelvin who invented the Kelvin Bridge. Kelvin test method is one of the test methods commonly used in analog circuit testing, also known as four terminal sensing (4T sensing). The Kelvin Bridge is usually used to measure unknown electrical resistance below 1Ω. Kelvin test sockets are an important part of electrical component testing.

  • Application: SOP, PSOP, QSOP, SSOP, TSSOP
  • Nb of Pins: 8~60 or more
  • Pitch: 0.5mm or above

Kelvin Test Socket for SOP Package


1498021773838812.gif Used for analog circuit testing

1498021773838812.gif Package can be SOP, PSOP, QSOP, SSOP, TSSOP, ...

1498021773838812.gif Pitch can be 0.5mm or above

1498021773838812.gif Life cycle can be 300,000 or above

kelvin socket 08.png 


Kelvin Test Socket for SOP

Kevin Socket with PCB.png

Kelvin Test Socket with PCB


SOP8 0.65mm Kelvin Test Socket drawing


SOP8 Kelvin Test Socket Application with Transfer Module


  • Kelvin test socket is used for analog circuit testing for SOP packages.

  • Dual points contact on package leads for Kelvin test.

  • Transfer module can be offered upon customer's request.

  • Customzied PCB board can be sold together with socket under customer's request.

  • Can customize DFN kelvin socket.



Material Socket Body:               PEI

Contact:                                         Blade Pin

Operation Temperature:          -40 ~ 125 ℃

Life Span:                                         300K ~ 500K Cycles

Spring Force:                                 20g ~ 40g per Pin


Current Rating:                        1A

DC Resistance:                              Max. 100mΩ

Part Number Name Description Package Pin Nb Material Remark
702-0001725 Test Socket SOP28 0.65mm Kelvin ATE SOP 56 PEI

702-0001952 Test Socket SOP28 0.635mm Kelvin ATE SOP
56 PEI
702-0001947 Test Socket SOP20 0.65mm Kelvin ATE SOP 40
702-0001920 Test Socket SOP8 1.27mm Kelvin ATE SOP 16 PEI
702-0001944 Test Socket SOP16 1.27mm Kelvin ATE SOP
32 PEI

Sireda provide kelvin test socket for all kinds of SOP packages. More kelvin test socket or more information, please contact