Spring Probe

Are you finding a test probe or spring probe of the right size? are you worried about a high-quality product, with the shortest delivery date, the lowest cost, and the best services? Dongguan Promax is the best, as a professional pogo pins ODM Manufacturer & Vendor since 2014, we are confident in providing you with the best proposal and technical solutions, fixing your issues, and meeting your targets!

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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

Use Case of Through Hole Pogo Pin Connector

The case was describing a spring probe used in a BGA test socket, which was to test a BGA chipset in a mixer console from a Europe professional stage audio equipment manufacturer MUSIC Group.

Since the BAG test was a very professional and accurate project, we needed to study the BAG matrix array, point pitch, ball, impedance, and so on. That was, we needed to study how to power-on test a BGA chipset by loading and unloading a BGA chipset into the BGA test socket.

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Based on the customer’s requests, all spring probes in the BGA test socket were needed to ensure the best signal communication and the best power conduction.

That was, there were not any failures caused by spring probes, but by BGA true failure. It was the use case of low volume and high category of spring probes. and also a big challenge project.

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Studied Customer Requirements

Based on the precise BGA size and pitch, we designed the spring probe and BGA test socket at the same time. for the spring probe. For the BGA test socket, it was just a container to fix 498 spring probes, its pitch was 0.8mm, and its material was PEEK and Telfon.

As the material of the spring probe, the plunger was BeCu, the barrel was PBT, and the spring was SWP. The coating of the plunger and the barrel was Au plated ≥3U”, the spring was Au plated ≥1U”, the designed voltage and current were 5V DC and 1.0A, the contact resistance was no more than 50mohm, the working height was 1.0mm, the full height was 1.5mm, the spring force was 35gf±20%gf, its life cycle was 500,00 times.

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Design of Spring Probe

The spring probe was designed as two same plungers and one barrel. in industry, we called two plungers: one was the top plunger, and the other was the bottom plunger, their outer diameter was Φ0.50mm, and the outer diameter of the spring probe was Φ0.78mm. total length was 21.5mm.

The rated current was 1.0A, its contact resistance was less than 50mohm at a recommended stroke, the full stroke was 1.5mm, the spring force was 35gf±20%, and the operating temperature was -40℃~120℃, its life cycle was far more than 600,000 times after implemented life-cycle test. The coating of the spring probe was Au gold, it could effectively enhance the function of anti-corrosion and mechanical and electrical properties.

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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. Dongguan Promax is a worth trusting partner, manufacturer, and supplier! welcome customization!

What is a spring probe?

Spring probe is a function of electronic test kind of testing semiconductors and devices, playing the role of connecting conductive and propagating signals. The test object will be put into the test holder fixed on the PCB board, and without welding can be tested online.

Spring probe has the advantages of small loss, stable performance, and long working life. Also can meet the high precision small pitch accuracy test. In addition to general chip testing purposes, the spring probe is also widely used in automotive, smartphones, tablet PCs, GPS navigation and TV, and other internal connection accessories.

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.

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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.

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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.

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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.

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Why Dongguan Promax?

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

Dongguan Promax 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.

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Pogo Test Pin

Industrial connector

Spring Probe