Pogo Pin Connector

A: Our product catalog is categorized based on how engineers actually search for parts:

Standard Single-Pin Series — Pin diameters from 0.6mm to 5.0mm and lengths starting from 3.5mm. These are common connectors you'll find in TWS earphone charging cases, tablet docks, and test fixtures.

Magnetic Connector Series — Integrated N52 neodymium magnets, supporting blind mating. We can adjust the pull force from 300g to 1200g to suit your needs (gentle snap-fit ​​or firm lock).

High-Current Pogo Pin Connector Series — 5A to 60A. These connectors do more than just use…thickened tubes; we've incorporated multi-point parallel contacts internally and redesigned the heat dissipation path. The internal structure of the 60A pin is completely different from the 2A pin.

Special Specifications — Double-Ended Pogo Pin connections (with plungers at both ends), right-angle/bent pins for tight spaces, and SMT surface-mount pins with locating pins for automatic pick-and-place. Approximately 80% of the products in our standard catalog can be shipped on the same day. If you require products with special specifications, please provide a sketch. We have our own mold workshop, so custom molds can be completed within 7-10 days.

A: Yes, high-quality pogo pin connectors support up to 5A for fast charging applications.

A:Standard pogo pins rely on the user aligning the mating pad manually or through a mechanical guide. Magnetic connectors handle the alignment for you. The magnet ring sits outside the electrical contact zone, so there's no arcing across magnetic material. We use insulated housings to keep the flux away from sensitive circuits. If your product is used by consumers who just want to "drop it on and have it charge," magnetic is the way to go. If you're building a test fixture where technicians need precise control, stick with standard.

A: 0.6mm outer diameter is our practical limit for volume production. We've done 0.5mm prototypes, but the spring wire becomes too fragile during automated assembly. At 0.6mm, we can still hit a 1A current rating and keep contact resistance below 50mΩ. The tip geometry can be pointed, flat or spherical depending on your pad design.

A: Yes. Our 3.0mm and larger pins handle 10A–60A. For anything above 20A, we switch from brass to beryllium copper for both the plunger and barrel, and we add a second redundant contact point inside the barrel. Heat rise is kept under 30°C at rated current during continuous operation. We've shipped 30A and 60A variants to manufacturers of industrial drones and portable power stations.

A: Material selection isn't an afterthought for us. It determines conductivity, corrosion resistance and spring fatigue life. Here's exactly what goes into each component:

Barrel (housing) — C6801 brass for standard duty. Switched to beryllium copper for high-current or high-vibration applications.
Plunger (contact tip) — Matched to the barrel material. Tips are precision-turned and can be shaped conical, flat or domed.
Spring — SUS304 stainless steel as baseline. For extended life or high-temperature use, we switch to music wire or nickel-plated music wire.
Plating — Nickel underplating (1–2μ") followed by gold. Standard is 3μ" Au. Medical and high-cycle industrial parts get 5μ" or 10μ". Tin plating is available for cost-sensitive, low-frequency applications, but we generally discourage it for anything above 1A.
Pogo Pin Electrical & Mechanical Specifications by Series
Pin OD Rated Current Contact Resistance Spring Force (typical) Standard Plating Life Rating
0.6 mm 1 A ≤ 50 mΩ 15 g Ni 1μ" + Au 3μ" 10,000 cycles
1.0 mm 2 A ≤ 30 mΩ 25 g Ni 1μ" + Au 3μ" 10,000 cycles
1.5 mm 3 A ≤ 20 mΩ 40 g Ni 1μ" + Au 3μ" 50,000 cycles
2.0 mm 5 A ≤ 15 mΩ 60 g Ni 1μ" + Au 5μ" 100,000 cycles
3.0 mm 10 A ≤ 10 mΩ 100 g Ni 2μ" + Au 5μ" 100,000 cycles
5.0 mm (High Current) 30–60 A ≤ 5 mΩ 150–200 g Ni 2μ" + Au 10μ" 1,000,000 cycles
Every number in that table was measured in our own lab using a four-wire micro-ohmmeter and calibrated force gauges.

A: Both. We always lay down a nickel barrier layer first. Nickel prevents the gold from diffusing into the copper substrate over time and provides a hard underlayer that resists wear. The gold layer thickness depends on your cycle life target. For a charging dock that sees a few cycles per day, 3μ" is fine. For a medical device that stays mated for months but needs absolute reliability when it is unplugged, 5μ" gives us a safety margin. For test fixtures that mate thousands of times per week, 10μ" is the only way to keep resistance stable.

A: Fresh out of the bag, a standard 1.5mm pin measures between 15mΩ and 20mΩ on our four-wire tester. After 10,000 cycles, we allow up to a 50% increase, so anything under 30mΩ still passes. High-current pins start lower (3–5mΩ) and have a tighter tolerance because even a small resistance increase at 30A creates significant heat.

A: Yes, but waterproofing means different things to different people. When we say IPX8, we mean sustained immersion at 1 meter for 30 minutes with zero ingress. We don't achieve this by slapping an O-ring on the outside—that's a shortcut that fails after thermal cycling. Instead, we machine a labyrinth seal inside the barrel, just behind the plunger. When the pin is depressed, the plunger skirt maintains a tortuous path that water can't navigate. For extreme environments, we can add a rear potting compound or a full overmolded housing.

A: We have prepared separate PDF data manuals for each product. Each manual includes mechanical drawings with tolerances, recommended PCB pad layouts, force-displacement curves, and temperature reduction charts. You can send us an email to inform us of your target model, and we will send the corresponding data manual.

A: Standard 3μ" gold over nickel passes 48 hours in a 5% NaCl, 35°C salt spray chamber per ASTM B117. For marine or coastal applications, we can bump the gold to 5μ" and add a proprietary topcoat that gets you to 96 hours. Our highest spec, used on offshore equipment, reaches 168 hours. After the test, we disassemble the pins and inspect for base-metal corrosion under a microscope. If there's any red rust on the spring, it fails.

A:

One million cycles is achievable, but only with the right material stack and only under controlled conditions. We break our life ratings into three practical tiers:

Consumer grade (10,000 cycles) — Standard SUS304 spring, 3μ" gold, no special lubrication. Perfect for charging docks and wearables.
Industrial grade (100,000 cycles) — Music wire spring, 5μ" gold, dry film lubricant on the plunger OD. Used in automated test equipment and industrial robotics.
Medical / Premium grade (1,000,000 cycles) — Beryllium copper spring, 10μ" gold, solid lubricant coating on the barrel bore, mirror-finished internal surfaces. This is the tier we supply for non-invasive brain-computer interface headsets and long-life medical carts.
All life testing is done on automated cam-driven machines at room temperature, 50–60% RH, with a controlled insertion force and a 2-second dwell. Real-world life will vary if your application involves dust, misalignment, or aggressive insertion speeds.

A: We follow EIA-364-09 for mechanical shock and EIA-364-27 for durability. Our test logs record every 1,000 cycles, including force decay and resistance drift. For customers who audit our factory, we pull the raw CSV logs and the video recordings. Browse our quality test reports or request a specific model's log file by emailing sales.

A: We don't put fake logos on our homepage. Here are three projects we can talk about:

Portable ultrasound (Medical) — A Shenzhen-based medical OEM needed a 12-pin magnetic connector for a handheld ultrasound probe. They required full biocompatibility per ISO 10993 and a mating force low enough for elderly nurses to operate. We delivered samples in 18 days and went to volume within three months. The connector is still in production five years later.
Logistics sorting robots (Industrial) — A Jiangsu AGV manufacturer uses our 24V / 10A pogo pin block for automatic charging at sorting stations. Each robot docks 200+ times per day. After two years in the field, their failure rate on our connector block is under 0.3%.
Non-invasive BCI (Research) — We supplied a high-density 1.27mm pitch pogo pin array to two domestic brain-computer interface startups. The challenge wasn't current; it was signal integrity. We worked with their RF engineers to match impedance and minimize crosstalk between adjacent channels.