Product Overview
3mm spring test probes (pogo pins) are spring-loaded contact pins with 3mm barrel diameter, built for heavy-current and high-load testing. Featuring plunger, barrel and internal compression spring, they deliver stable and consistent contact force under compression, creating reliable temporary electrical connection. Nickel-gold plating brings low contact resistance and anti-oxidation performance. Widely used in power module testing, battery inspection, large PCB, automotive electronics and industrial test jigs.
Key Features
- 3mm barrel diameter, heavy-duty design: Supports higher rated current compared with fine-pitch small probes
- Built-in compression spring: Compensates height tolerance of test points, maintains stable contact force
- Nickel underlayer + gold plating: Low contact resistance, anti-corrosion and anti-oxidation
- Multiple tip styles available: Conical, crown, dome, chisel tip for different test pads
- Robust structure: Long service life for repeated compression cycles
- Customizable: Stroke, spring force, tip profile and total length on request
Technical Parameters
表格
| Item | Specification |
|---|---|
| Product Name | 3mm Spring Test Probe / 3mm Pogo Pin |
| Material | Plunger: Beryllium copper / Hardened steel; Barrel: Brass; Spring: Music wire |
| Surface Treatment | Nickel + Gold plating |
| Barrel Diameter | φ3.0mm |
| Stroke | 1.0mm – 8.0mm (custom) |
| Spring Force | 100gf – 500gf |
| Contact Resistance | 20 ~ 80 mΩ |
| Rated Current | 5A ~ 15A continuous |
| Operating Temperature | -40℃ ~ +125℃ |
| Cycle Life | 50,000 ~ 800,000 times |
| Tip Options | Conical, crown, dome, chisel |
Application
- Power module & inverter testing
- Automotive electronic PCB and component inspection
- Lithium battery pack, BMS performance test
- Heavy-load ATE test fixtures and jigs
- Large-size circuit board functional test (FCT)
3mm Spring Test Probe vs Small-diameter Pogo Pin
表格
| Item | 3mm Spring Test Probe | Small-diameter Pogo Pin (φ0.2~1.5mm) |
|---|---|---|
| Barrel Diameter | 3.0mm | 0.2~1.5mm |
| Current Capacity | High (up to 15A) | Low to medium |
| Spring Force | Higher | Light to medium |
| Typical Use | Power, battery, automotive electronics | Fine-pitch IC, BGA, small PCB |
| Pad Requirement | Larger contact pad | Micro pad for mini components |
