Spring Probe

Spring probes, also known as spring contact probes, are specialized connectors designed to provide reliable electrical connections in various applications, particularly in harsh environments.

At Promax Pogo Pin manufacturer, we offer high-performance Spring Probes, designed to meet the needs of industries such as telecommunications, automotive, medical, and electronics. Our spring probes are expertly crafted to provide consistent, reliable connections, even in the most challenging conditions.

GET QUOTE

MORE SELECTION

SIZE

DiameterΦ:≥0.7mm, full stroke ≥0.2mm, working stroke ≥0.05mm

SHAPE

all types of customization

MATERIAL

Brass, SUS304/316F/L,CuTe,HBi59,Cu-Sn, etc

PLATING

Au, Ag, Pd, Pt, Rh, Ru, Ni, etc

MOQ

3000pcs by T&R, Tray, Tube, Box, PE bag, etc

DELIVERY

DHL, UPS, ship the sample out in 2 weeks, mass production in 3-4 weeks

Spring Probe: Design and Functionality

Basic Structure: A spring probe typically consists of a barrel, a plunger, and a spring. The plunger is mounted within the barrel and is biased by the spring, allowing it to move freely. This design enables the probe to maintain contact with a mating surface even under conditions of shock, vibration, or misalignment.
Contact Mechanism: The contact point of the spring probe is designed to engage only the surface of the target, rather than inserting into it like traditional pin and socket connectors. This allows for a forgiving mating process, accommodating misalignments and reducing the risk of damage during connection

For a detailed overview of their features and uses, check out our guide on spring-loaded pogo pins.

Spring Probe: Performance Characteristics

Electrical Performance: Spring probes are known for their low contact resistance, typically less than 10 mΩ, which is crucial for maintaining signal integrity in both analog and digital applications. They can handle high frequencies, with capabilities of up to 20 GHz and data rates of 12 Gb/s

Current Rating: Depending on the specific design, spring probes can support various current ratings, with some capable of handling up to 30 Amps

Temperature Range: These probes can operate effectively across a wide temperature range, typically from -55°C to 250°C, with some materials allowing for even more extreme conditions

Spring Probes Common Applications

Harsh Environments: Spring probes are ideal for applications in industries such as aerospace, military, automotive, and industrial automation, where they can withstand extreme conditions. Their durability and reliable performance make them comparable to advanced solutions like waterproof pogo pin connectors, which are specifically designed to maintain functionality in harsh environments.
Modular Components: They are often used in modular designs where quick disconnects are necessary, allowing for easy maintenance and replacement of components.
Blind Mate Applications: The unique design of spring probes allows for blind mating, where the connector can engage without direct line of sight, making them particularly useful in compact or difficult-to-access spaces.

Fixture Designs To Fix Spring Probe

The fixture was just very a precise container to fix a total of 498 spring probes, the figure below was one hole size drawing to fix a spring probe, its material was wolfram steel, it could strong lock a spring probe, sure, it was also easy for a professional technician to remove and then replace a spring probe.

One BGA test needed one type of fixture like this, we have provided many types to test many BGA. based on our designs and our solutions, we help the customer to verify all BGA qualification tests including cleaning up their 10K stock, the customer was surely very satisfied with us. Promax Pogo Pin is a worth trusting partner, manufacturer, and supplier! welcome customization!

Durability and Reliability

Longevity: Spring probes are designed for high durability, capable of withstanding millions of mating cycles without significant degradation in performance. The helical coil springs used in these probes maintain a constant force, ensuring consistent contact over time.

What is Spring Probe’s Structure?

The spring probe is the contact medium for electrical testing and is a high-end precision electronic hardware component. It mainly consists of three parts: spring, plunger, and barrel.

From the component structure part, the spring probe is associated with the spring. However, it is not a probe supported by a spring; the spring is only a structure inside it.

ReadLess

What is The Working Principle of The Spring Probe?

Testing whether the dut is working properly can give the manufacturer feedback on their process problems. Meanwhile, It can screen out the bad products to reduce the waste of subsequent finished products.

The working principle of the spring probe is mainly to send special electronic signals through the tested equipment, and the spring probe is fed back to the test system.If the returned test signal is accurate and the tested equipment passes the test within the desired time, it is a good product. If not, is defective. At the same time, the test system will analyze the electronic signal to determine which test the equipment does not pass.

ReadLess

What is The Material and Surface Treatment of the Spring Probe?

Main Materials
Aluminum	AI6061, AI6063, AI6082, AI7075, AI2024, AI5052, A380, etc.
Stainless Steel	SS201, SS301, SS303, SS304, SS316, SS416, etc.
Steel	Mild Steel, Carbon Steel, 4140, 4340, Q235, Q3458, 20#, 45#, etc.
Brass	C35600, C36000, C37000, C37700, C37100, C28000, C26000, C24000, C22000, etc.
Copper	C11000, C12000, C12200, C10100, etc.
Iron	20#, 45#, Q235, Q345, Q3458, 1214, 12L14, 1215, etc.
Plastic	POM, Peek, PMMA, ABS, Delrin, Nylon, PVC, PP, PC, etc.
Surface Treatment
Stainless Steel	Brushed and Polishing, Passivating, Sandblasting, Laser engraving, Gold Plating. etc.
Steel	Zinc plating, Oxide black, Nickel plating, Carburized, Powder Coated
Aluminum Parts	Clear Anodized, Color Anodized, Sandblast Anodized, Chemical Film, Brushing, Polishing, Power Coated, Nickel Plated, etc.
Plastic	Plating gold(ABS), Painting, Brushing(Acylic), laser engraving

What is Spring Probe Tip Type?

Spring probe is widely used in electronic products such as mobile phones and plays a test role. The spring probe is equivalent to a medium. During the test, the head of the probe can be used to contact the object to be tested,

and the other end is used to conduct the signal and transmit the current. Probes have a variety of different head types, which can be used to deal with different test points, such as tip, sawtooth, and flathead.

ReadLess

GET QUOTE

How to Choose The Right One?

It is important to choose a good one that will help you to check whether the semi-finished product is qualified or not. A qualified product is crucial for any company. So how do you choose a good one?

You can start choosing from the structure of the spring probe, a good spring probe structure determines its service life. The next step is to choose the right crown type.

ReadLess

GET QUOTE

Why Promax Pogo Pin?

When it comes to test probes, few companies can match the level of skill and expertise demonstrated by Promax Pogo Pin. With over 15 years of experience in the field.

Promax Pogo Pin meets the needs of its customers with an extremely high quality of service. No other company can offer the same level of quality and reliability when it comes to spring probes.

ReadLess

GET QUOTE

Pogo Test Pin

Industrial connector

Spring Probe