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IC Test Probes: Product Range

PB035D570B-28A - Mid-range IC test probe

Mid-range IC test probe with a 0.20 mm plunger and 1.5A current rating. The lower spring force of 28 gf makes it a good fit for applications where minimal pad marking matters. Contact resistance is rated at 120 mΩ or below.

pb035d570b 28a
Length : 5.70 mm Plunger Ø : 0.20 ±0.01 mm Current : 1.5A Resistance : ≤120 mΩ Spring Force : 28 gf ±20% Stroke : 0.90 mm full, 0.65 mm working Temp Range : Not specified Durability : ≥30,000 cycles

→ Request a Quote | Download Datasheet

0.22 mm Plunger - PB038B570B-25A

Higher-current IC test probe rated at 2.0A with a 0.22 mm plunger diameter. Delivers stable contact resistance below 100 mΩ through 100,000+ cycles. The wider plunger handles power delivery lines on IC packages that carry heavier loads during test.

pb038b570b 25a
Length : 5.70 ±0.15 mm Plunger Ø : 0.22 ±0.01 mm Current : 2.0A Resistance : ≤100 mΩ Spring Force : 24.5 gf ±20% Stroke : 0.80 mm full, 0.65 mm working Temp Range : −40°F–185°F Durability : ≥100,000 cycles

→ Request a Quote | Download Datasheet

How to Choose the Right IC Test Probe

how to choose the right ic test probe

  1. Define your pitch and package type. Start with the center-to-center pad spacing on your DUT. Pitches below 0.4 mm need barrel diameters of 0.31 mm or smaller. Identify whether you’re testing QFP, BGA, CSP, or custom IC packages. Each may require a different tip geometry.
  2. Determine your current and signal requirements. Standard IC test probes handle 1A. Power IC validation and burn-in applications may need 3A or higher. High-frequency signal paths also require probes with controlled impedance and minimal inductance.
  3. Choose single-active or double-active. Single-active probes work for most final test sockets with a fixed load board interface. Double-active probes add compliance on both ends, which helps with coplanarity variations in fine-pitch sockets.
  4. Check your operating temperature range. Standard IC test probes operate from −40°F to 302°F. Burn-in applications at elevated temperatures should confirm the probe’s rated range before ordering. Let us know your thermal profile when requesting a quote.
  5. Check compliance and certifications. Promax Pogo Pin holds ISO 9001, ISO 14001, ISO 45001, and IECQ QC080000 certifications. All probes are RoHS-compliant. If your application requires additional traceability or material certifications, let us know during the quoting process.
  6. Not sure which probe fits? Talk to our engineers. Send us your test socket drawing or DUT pad layout. We’ll recommend the right probe and ship free samples within two weeks.

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What Engineers Say About Our IC Test Probes






Industry: Semiconductor Final Test

“We switched to Promax IC test probes after our previous supplier’s probes started drifting in contact resistance around 60,000 cycles. Promax’s crown-tip probes held below 40 mΩ past 120,000 cycles in our handler. That cut our probe replacement frequency by 40% and reduced false rejects on our QFP final test line.”

Senior Test Engineer,

Tier-1 Semiconductor OEM, Shenzhen





Industry: Medical Device PCB Testing

“We needed double-active probes for a 0.35 mm pitch medical device IC with strict coplanarity requirements. Promax delivered samples in 12 days and matched our existing socket dimensions exactly. Their engineering team flagged a spring force issue we’d have missed, saving us a round of test fixture rework.”

Hardware Validation Lead

Medical Electronics OEM, Munich





Industry: Automotive IC Burn-In

“Our burn-in sockets run at 302°F and cycle 500+ times per day. We’d been replacing probes every three weeks. Promax’s gold-plated cup-tip probes lasted over eight weeks under the same conditions. The direct factory pricing also came in 25% below our previous supplier.”

Reliability Engineer

Tier-2 Automotive Supplier, Detroit

IC Test Probes FAQs

What tip style should I use for my IC test application?

Four-point or five-point crown tips are the most common choice. They scrub through oxide on aluminum bond pads and provide stable, low-resistance contact. For fine-pitch packages below 0.4 mm, conical tips offer precise single-point contact with less pad damage. Our engineers can recommend the right tip based on your pad metallurgy, package type, and cycle life target.

What’s the minimum order quantity for custom IC test probes?

Standard catalog probes have no fixed minimum. Custom designs typically start at 500–1,000 units to cover tooling costs. We provide free samples of standard models so you can validate fit and performance in your test socket before committing to a production order.

How long does it take to get custom IC test probes?

Engineering review and design feedback takes 1–3 days. Samples ship within two weeks of design approval. Production orders ship in 2–4 weeks, depending on quantity and customization level. If you’re on a tight test program schedule, let us know early and we’ll align our timeline.

Can Promax match an IC test probe I’m currently using from another supplier?

Yes, send us the datasheet, part number, or a physical sample. We’ll reverse-engineer the probe to match your existing socket dimensions, spring force, and tip geometry. Many clients switch to Promax to reduce cost or lead time without redesigning their test fixtures.

What materials and plating do you use for IC test probes?

Probe barrels use Beryllium Copper or nickel silver for spring consistency and durability. Plunger tips are plated with Gold or Palladium to maintain low contact resistance and resist oxide buildup. Springs use music wire calibrated within ±5% of the target force. Material and plating selections depend on your pad metallurgy and cycle life requirements.

What certifications does Promax Pogo Pin hold?

Promax is certified to ISO 9001, ISO 14001, ISO 45001, and IECQ QC080000. All probes are RoHS-compliant. We also hold 22+ patents in pogo pin and spring-loaded contact technology.

Do you offer IC test probes for high-temperature burn-in applications?

Yes, our probes operate reliably at temperatures up to 302°F. For burn-in sockets that cycle at elevated temperatures, we use gold plating and high-temperature spring alloys that maintain consistent contact force across the full thermal range. Let us know your operating temperature and cycle frequency when requesting a quote.

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