la broche 11 du test Pogo
sonde à ressort 01
ressort de palpage
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Fabricant de sondes de test

Sondes de test, également connues sous le nom de Sondes de contact à ressort, sont des connecteurs spécialisés conçus pour fournir des connexions électriques fiables dans diverses applications, particulièrement dans les environnements difficiles. À Promax Fabricant de connecteurs pogo pin, nous offrons sondes de test haute performance, conçues pour répondre aux besoins d'industries telles que les télécommunications, l'automobile, le médical et l'électronique. Nos sondes de test sont conçues avec expertise pour fournir des connexions cohérentes et fiables, même dans les conditions les plus difficiles.

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Notre gamme de sondes de test

Broche Pogo Promax propose des sondes de test pour des tests électriques stables et répétables. Notre gamme comprend des sondes à une extrémité, des sondes à double extrémité, des sondes à pas fin, des sondes à tête couronne et des sondes de test personnalisées.

Chaque sonde est conçue pour un contact fiable et une faible résistance de contact. Nous proposons également différentes tailles, types de pointes, forces de ressort et options de placage pour s'adapter à différents appareils de test et conceptions de produits.

sondes monoterminales

Sondes à extrémité unique

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double end probes

Double-End Test Probes

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fine pitch probes

Sondes à pas fin

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crown head probes

Sondes de tête de couronne

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ict test probes for in circuit pcb testing

Sondes de test TIC

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ic test probes high precision contacts for semiconductor testing

Sondes de test pour CI

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right rf high frequency probe

RF High Frequency Test Probes

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Basic Test Probe Structure

A test probe consists of a plunger, barrel, and spring — the same core structure as a spring-loaded pogo pin. The plunger is biased by the internal spring so it maintains contact with a mating surface even under shock, vibration, or minor misalignment, and its contact tip (not an inserted pin) makes non-destructive, repeatable contact for electrical testing.

sonde à contact à ressort

Common Materials for Test Probes

Baril
  • Laiton: Cost-effective, good conductivity for standard-duty probes.
  • SUS304 / SUS316L: Stainless steel for enhanced corrosion resistance in harsh test environments.
Déboucheur
  • CuTe (Tellurium Copper): High conductivity with good machinability for fine-pitch tips.
  • HBi59 / Cu-Sn: Higher-strength copper alloys for high-cycle, high-force applications.
Printemps
  • Acier inoxydable: Enhanced corrosion resistance and consistent spring force in harsh environments.
  • Carbon Steel: A cost-effective option offering reliable spring force for standard-duty applications.

Common Plating Materials

Plaquage Conductivity Wear Resistance Corrosion Resistance Relative Cost Application typique
Gold Excellent Haut Excellent Haut Precision and low-resistance contacts
Nickel Good Haut Haut Moyen Underlayer and protective coating
Rhodium Excellent Excellent Excellent Very High High-cycle test probes
Palladium-Nickel Good Excellent Haut Haut Durable precision connectors
Silver Excellent Moyen Moyen Moyen High-current test probes
Tin Good Bas Moyen Bas Solderable terminals

Test Probe Key Operating Parameters

Pitch, travel, and force determine whether a probe fits your fixture; current and cycle life determine whether it survives production testing. All five are configurable across our single-end, double-end, fine-pitch, and crown-head lines.

Pitch

Sondes à pas finDown to 0.4 mm
Diamètre du pistonØ0.08 – Ø4.00 mm

Travel

Temps de travail0.20 – 4.30 mm
Course complète0.40 – 6.40 mm

Force

Force du ressort11 gf – 20 N
ToleranceTyp. ±15–20%

Current

Courant nominalUp to 30 A
Résistance de contact<10 – 200 mΩ

Durée de vie en cycle

Durabilité3,000 – 1,000,000+ cycles
Plage de température–55°C to 250°C

Signal Performance

FrequencyUp to 20 GHz
Data RateUp to 12 Gb/s

How Promax Manufactures Test Probes

Turning

Every test probe component starts on precision CNC turning equipment, machined to tight tolerances for a consistent fit between plunger, barrel, and spring.

CNC turning machines manufacturing test probe components at Promax factory
Grinding

Machined parts are ground to finish critical dimensions, refining fit and surface finish beyond what turning alone can achieve.

Automated precision grinding line for test probe components at Promax factory
Plaquage

Components are electroplated with the specified contact materials and finishes, such as gold, nickel, silver, or tin, to meet each application’s conductivity and durability requirements.

Test probe electroplating line with gold and nickel plating tanks at Promax factory
Assembly

The plunger, spring, and barrel are precisely assembled into a single test probe, ready for electrical and mechanical testing.

Automated test probe assembly machine inserting plunger, spring, and barrel components
Testing

Every batch undergoes comprehensive electrical and mechanical testing, including 100% contact resistance checks and mechanical force verification.

Automated electrical testing machines for test probe quality control at Promax factory
Packaging

Finished probes are packed in anti-static packaging designed to prevent damage during shipping and handling.

Tape and reel packaging of finished test probes at Promax factory

Quality Control Standards

Process Capability Index (Cpk)

Critical Dimensions0.98 – 1.12
Target≥ 1.33
Industry Standard1.0 – 1.67

Continuous improvement → Target Cpk 1.33

Failure Rate & Defects

Failure Rate0.5% – 0.9%
Defective Parts5-9 / 10,000
Industry Target< 1.0%

Near or exceeds Six Sigma standard

Test Protocols

Electrical Testing

  • 100% Contact Resistance Testing
  • Insulation Voltage Withstand
  • Current Impulse Testing

Mechanical Testing

  • Insertion Force Verification
  • Life Cycle Testing (100K+ cycles)
  • Shock and Vibration Testing

Environmental Reliability

  • Temperature Cycling
  • High Temperature/Humidity Storage
  • Salt Spray Corrosion Testing

Reliability Analysis

  • Failure Mode Analysis (FMEA)
  • Fault Tree Analysis (FTA)
  • Life Assessment

Gage R&R (ANOVA) for Press Fit

We leave nothing to chance regarding quality control. For our press fit, we analyzed 100 pressure data points using the GR&R method. To ensure thorough testing, we had three technicians test the reproducibility and repeatability of the press fit across 10 different products. Our commitment to precision is unwavering, and our quality control measures are among the most rigorous in the industry. When you choose us, you choose excellence.

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Applications of Test Probes

From board-level ICT to burn-in and RF calibration, Promax test probes cover the full range of electrical test and measurement scenarios.

ICT & FCT Test Fixtures

Bed-of-nails in-circuit test (ICT) jigs and functional test (FCT) rigs use ICT test probes for high-throughput, non-destructive contact with PCB test pads and BGA balls across millions of insertions.

Semiconductor & IC Testing

Wafer probe cards, burn-in sockets, and IC test handlers use IC test probes and fine-pitch probes down to 0.4 mm pitch for fine-lead package testing.

5G & RF Module Testing

RF high-frequency probes rated to 20 GHz verify signal integrity on 5G modules, antenna arrays, and RF front-end modules before they leave the line.

Automotive & EV Electronics

ECU boards, battery management systems, and ADAS modules use high-current and crown-head probes rated to 30 A and –55°C to 250°C to verify function across harsh automotive test conditions.

Aerospace & Defence Test Benches

Avionics, radar, and ruggedised military electronics rely on probes with MIL-STD-810F-rated ingress protection and wide temperature tolerance for reliable bench and field testing.

Medical Device Validation

Double-end test probes provide repeatable, low-resistance contact for validating diagnostic equipment, patient monitors, and implantable device electronics before shipment.

Need a probe for a fixture that doesn’t exist yet? Talk to our engineers for a custom probe and fixture design.

Qualité certifiée

Promax Pogo Pin has emerged as a leading manufacturer by continuously innovating in new materials, electroplating technology, and advanced manufacturing processes, ensuring the production of reliable, high-performance test probes.We are dedicated to offering both standard and custom products tailored to meet the specific needs of our customers.En savoir plus

Ce que disent nos clients

“Nous sommes très satisfaits des produits, qui dépassent constamment nos attentes en matière de fonctionnalité, de conception, d'esthétique et de praticité.”

“Les produits répondent constamment à nos exigences élevées, alliant excellente fonctionnalité, design élégant et fiabilité pratique.”

“Nous sommes impressionnés par la qualité exceptionnelle et la conception réfléchie, offrant des fonctionnalités et une attrait esthétique exceptionnels.”

“Nous sommes très satisfaits des produits, qui dépassent constamment nos attentes en matière de fonctionnalité, de conception, d'esthétique et de praticité.”

“Les produits répondent constamment à nos exigences élevées, alliant excellente fonctionnalité, design élégant et fiabilité pratique.”

“Nous sommes impressionnés par la qualité exceptionnelle et la conception réfléchie, offrant des fonctionnalités et une attrait esthétique exceptionnels.”

Why Choose Us

Promax Pogo Pin combines in-house tooling, IATF16949/ISO-certified manufacturing, and 15+ years of connector engineering to keep your program on schedule and on budget—from first prototype to mass production.

Prix compétitifs

Factory-direct manufacturing and streamlined production cut out middleman markups, giving you consistent per-unit pricing that scales with your order volume.

Fast Response

Dedicated engineers reply to technical queries and quote requests within 24 hours, with free samples available to validate fit before you commit to a run.

Extensive Product Inventory

Single-end, double-end, fine-pitch, crown-head, ICT, IC, and RF high-frequency test probes are stocked and ready to ship, so common specs don’t wait on a full production cycle.

Custom Solutions

Spring force, stroke, plating, current rating, and packaging are engineered to your exact application—mass production typically ships in 15–20 days.

Test Probes – Frequently Asked Questions

What tip types are available for test probes?

Test probe tips come in several styles to suit different test points: crown/serrated for oxidized or dirty pads, flat for delicate or gold-plated surfaces, spherical for uneven or curved contacts, and concave/cup for round leads and pins. Promax stocks all common tip styles across the single-end, double-end, fine-pitch, and crown-head lines.

How do I choose the right test probe?

Start from the structure — barrel material, plunger tip style, and spring force all determine service life and reliability. Match pitch and plunger diameter to your test pad spacing, spring force to your fixture’s compression travel, and current rating to your test signal. Our engineers can help match a probe to your fixture drawing.

What materials are test probes made from?

Barrels are typically brass or stainless steel (SUS304/SUS316L) for corrosion resistance, plungers use tellurium copper (CuTe) or copper alloys (HBi59, Cu-Sn) for conductivity and machinability, and springs use stainless or carbon steel. Contact surfaces are plated with gold, silver, palladium-nickel, or rhodium depending on cycle life and conductivity requirements.

Why choose Promax for test probes?

15+ years of spring-contact-probe manufacturing, IATF16949/ISO-certified production, and in-house tooling mean fast prototyping and consistent mass production. We support single-end, double-end, fine-pitch, crown-head, ICT, IC, and RF high-frequency configurations with free samples and 15–20 day mass production lead times.