Contact Probes
(Spring Probes)

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Standard type contact probes (spring probes)

Standard type contact probes

Construction of Contact probe

Contact probes (also called spring pins, probes, etc.) have been used for continuity testing for electronic components. Probe pin consists of three parts: a plunger, a pipe(barrel), and a spring. The structure has a spring inside the pipe, and the tip (= plunger) strokes to make an appropriate load and contact with the electrode to be inspected, and perform the electrical inspection.

コンタクトプローブとは

Electrical inspections range from simple open (disconnection) / short (short circuit) to current flow and high frequency measurement. The inspection target are very wide range of test ,such as semiconductors, LCD panels, raw and mounted substrates, connectors, components such as capacitors and sensors, and battery charging and discharging.

How to use contact probe

Standard contact probes are basically used in pairs with receptacles easily for replacement and wiring. A common way to use a contact probe is to drill a hole in the resin, fill in a receptacle with connected lead wires. Finally, insert the contact probe into the socket and ready to test.
If the contact probe needs to be replaced due to abrasion of the tip, it can be replaced easily by removing and inserting the new probe.

Our lineup of contact probes and sockets are available with commonly used P = 0.45 ~ P = 2.54mm. Each lineup has a basic tip shape. (Please contact us if you want a size or tip shape that is not in the catalog. Custom products can be manufactured as made to order.)

コンタクトプローブ標準品

Drilling holes in the resin for matching the size of the each probe. Refer to the product catalog for recommended hole diameters.

コンタクトプローブ標準品

Assembling socket (receptacle / receptacle) on the resin board, Seiken recommends suitable shapes for fixing the socket to the board, such as press-fitting and bonding. In order to save the trouble of wiring by the user, Seiken can also provide sockets with lead wires (100mm / 300mm) in advance.

コンタクトプローブ標準品

Inserting the contact probe into the socket. It can be used again only by replacing old probe to new probes, you can save labor and cost of by replacing probes.

* Skill is required when using small diameter probes. We can provide not only probes, but also products with resin machining processing, socket installation, and wiring. Please feel free to contact us for requests for resin processing

Custom-made contact probes are also available to meet your specifications and for more information, please contact

Tip selection

                                         
Round tip image Round tip. Model number:S〇-1 series.
Suitable for Flexible PCB, less damage for electrical pads.
Needle tip image Needle tip. Model number:S〇-2 series.
Suitable for PCB pad.
Flat and Inverse Cone tip image Flat and Inverse Cone tip. Model number:S〇-3 series.
Flat is suitable for preventing damage for electrical pad or suitable for surface contact. Inverse cone is suitable for receiving contact tip.
3 edge chisel tips image 3 edge chisel tips. Model number:S〇-4 series.
Suitable for through hole PCB.
Crown tip image Crown tip. Model number:S〇-5 series.
Suitable for multi points contact also suitable for contact mounted part lead.

Catalog downloads

 
Series Pitch Length Probe outline Socket outline Catalog
SW 4.75mm 55mm φ3mm φ3.4mm P=4.75 SW series
SG 2.54mm 55mm φ1.67mm φ2mm P=2.54 SG series
SE 2.54mm 24.5mm ※1 φ1.37mm φ1.67mm P=2.54 SE series
SV 2.54mm 32.6mm φ1.37mm φ1.67mm P=2.54 SV series
SL 2mm 32.6mm φ1.15mm φ1.4mm P=2.0 SL series
SA 1.905mm 16.56mm ※1 φ1.01mm ※1 φ1.32mm ※1 P=1.905 SA series
SH 1.27mm 15.9mm ※1 φ0.72mm ※1 φ0.87mm ※1 P=1.27 SH series
SO 1.27mm 14mm ※1 φ0.68mm φ0.89mm P=1.27 SO series
SN 1~0.9mm 15mm φ0.58mm φ0.75mm P=1.0~0.9 SN series
SF 0.8mm 15mm ※1 φ0.48mm φ0.65mm P=0.8 SF series
SD 0.75mm 19mm φ0.42mm φ0.58mm P=0.75 SD series
SJ 0.65mm 15mm ※1 φ0.38mm φ0.51mm P=0.65 SJ series
SB 0.5mm 11mm ※1 φ0.31mm φ0.4mm P=0.5 SB series
SQ 0.45mm 10.45mm ※1 φ0.25mm φ0.35mm P=0.45 SQ series
SC 2.54mm
1.27mm
0.8mm
19mm
16mm
16mm
φ1.37mm
φ0.68
φ0.48
φ1.67mm
-
-
Bias Cut SC series
SR 0.4mm
0.35mm
12.3mm
12.3mm
φ0.31mm
φ0.25
φ0.28mm
φ0.23
Double plunger SR series

We offer a wide variety of contact probes and receptacles on pitches ranging from 0.45mm to 2.54mm. Plunger tip styles can be provided in a variety of tip styles for our standard type contact probes. Receptacles are available with preassembled cable length 100mm or 300mm as option.Should you have any question or need more information, please contact at info@seiken.co.jp.

Custom-made contact probes are also available to meet your specifications and for more information, please contact at info@seiken.co.jp.

Contact form

Head Office

10F, Techno-Port Taiju Seimei Building, 2-16-2 Minamikamata Ota-ku, Tokyo, Japan, 144-0035 (MAP)

TEL 81-3-3734-1212Telephone reception service:
9:00-18:30(weekday)

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