Plungers (For Contact Probes, Spring-loaded Connectors, Pogo-Pins)

This product is manufactured and sold by FINECS.
  • Plungers (For Contact Probes, Spring-loaded Connectors, Pogo-Pins)
  • Plungers (For Contact Probes, Spring-loaded Connectors, Pogo-Pins)
  • Plungers (For Contact Probes, Spring-loaded Connectors, Pogo-Pins)
Plungers (For Contact Probes, Spring-loaded Connectors, Pogo-Pins)

Available sizes

φ0.2mm~φ1.0mm(Under development of φ0.1mm)
*Ask us for other specifications (wire diameter, length, plating, and material)

Tip shape

Round shape, needle flat shape, concave shape, etc. according to the type of contact

Plunger Round shape Plunger Needle flat shape Plunger Concave shape Plunger Flat shape
Round shape
Does not do damage to the contacts.
Needle flat shape
Suitable for tiny contacts.
Concave shape
Suitable for contacts with solder balls.
Flat shape
Suitable for face contact.

Material

C2600, C2700 (bronze) and C5191(Phosphor bronze).
In recent years, materials with high conductivity compared to brass are gaining attraction.
Regarding another materials, please contact us.

Application

① Contact Probes for semiconductor tests

Contact Probes for inspection measuring instruments, electronic component inspection sockets, wafers and printed circuit boards.
Also known as Spring probes, Probe Pins, and Pogo Pins.

② Products for consumer / industrial equipment, Spring-loaded Connectors

Spring-loaded Connectors for smartphones, laptops, devices, wearable terminals, cameras, battery connections, and POS terminals.
Also known as Pogo Pins, and Pogo Pin Connectors.

Example of replacement shape proposal from cutting to cold-heading

Example of replacement shape proposal from cutting to cold-heading

About Contact Probes (Spring Probes)

Contact probes (spring probes) are terminals for inspection equipment mainly used for inspection of various electronic components, semiconductor wafers, IC sockets, printed circuit boards, etc.
The contact probe (spring probe) is mainly composed of three parts called a spring, a barrel, and a plunger.
When the inspection of IC sockets is subdivided, there are two types, a test socket that measures electrical characteristics and a burn-in socket that measures reliability such as durability, and the performance required for the plunger differs.
In addition, it is necessary to select a suitable tip shape according to the material and shape of the inspection destination.

Contact Probes,Spring-loaded Connectors,Pogo Pins components
Contact Probes,Spring-loaded Connectors,Pogo Pins
components

About Spring-loaded Connectors (Pogo Pin Connectors)

Spring-loaded Connectors (Pogo Pin Connectors) are used for connections between boards, power supply connections, and data communication connections.
Spring-loaded Connectors (Pogo Pin Connectors) consist of 3 parts: a spring, a barrel, and a plunger.
Regarding suitable applications, it is used as a connection terminal for camera lenses, batteries, in wearable terminals and for different types of modules. You can also find it as a charging terminal in built-in batteries.

Features of our Plunger products

We manufacture plungers by our original Cold Heading machines.
It is possible to propose mass productivity and cost reduction of plungers suitable for spring connectors and spring probes by increasing the processing speed per product without generating metal scraps by the ultra-fine heading that has been extremely advanced so far. is.
In addition, the plating is generally base Ni plating + Au plating. This is because Au plating is optimal because of the application environment where high corrosion resistance, high conductivity, and low contact resistance are required.
We manufacture plungers for probes, spring connectors, and pogo pins according to the customer's request, so please feel free to contact us.

Related products

For related products, please follow the link :
Related page:

Product samples

Plunger(middle rib type)

Plunger(shell type)

Plunger(middle rib type)
Overall view
Plunger(middle rib type)
Tip concave shape
Effective for securing contact with solder balls
φ0.2mm Plunger(shell type)
Wire diameter φ0.2mm
φ0.3mm Plunger (shell type)
Wire diameter φ0.3mm

Please contact FINECS for details.