3 Pin Round Male Power Connector, Gold-Plated PCB Solder Terminals Connector
Product Description
This 3 Pin Round Male Power Connector is a compact electrical connector designed for stable DC power and low-frequency signal transmission. The connector uses three Ø0.63 mm round pins arranged on a circular pitch and terminated by through-hole solder tails, making it easy to mount on a PCB or integrate into a custom cable assembly. Gold-plated contacts over a nickel base deliver low contact resistance and excellent corrosion resistance, ensuring reliable performance over repeated mating cycles in harsh environments. The high-temperature thermoplastic housing provides mechanical strength and electrical insulation, while the cylindrical shape allows easy alignment with the matching female connector. Customization is available for pin length, plating, housing color, and complete wire-to-board or wire-to-wire harness solutions to match different device designs.
| Connector type | 3-pin round male power connector |
| Application | Low-voltage DC power and signal for electronic devices, LED lighting, battery packs, automotive modules, small appliances |
| Number of contacts | 3 pins |
| Pin diameter | Ø0.63 mm round pins |
| Contact arrangement | 3 contacts equally spaced on circular pitch |
| Termination style | Through-hole solder pins to PCB or to wire harness |
| Contact material | Copper alloy pins, nickel under-plating with gold-plated contact area |
| Housing material | High-temperature insulating thermoplastic (black) |
| Rated voltage | Suitable for low-voltage DC power systems (typically ≤ 30 V DC, customizable) |
| Rated current | Per pin current rating customizable according to customer design and wire gauge |
| Contact resistance | Low-resistance design for stable electrical transmission (detailed value on request) |
| Insulation resistance | High insulation resistance for reliable isolation between pins |
| Operating temperature | Typical design −20 °C to +85 °C (final rating depends on selected materials) |
| Mounting | Vertical mounting into PCB or fixed in plastic/metal housing |
| Protection | Gold-plated pins for corrosion resistance and long-life mating cycles |
| Customization options | Pin length, plating thickness, housing color, cable assembly, packaging, marking logo |
Applications
DC power connection for handheld devices, miniature fans, and wearable products
Interface between battery packs and control PCBs in consumer or industrial equipment
Signal and power connector for LED light modules and small controllers
Compact power connector in automotive electronics, medical devices, and instrumentation
Custom magnetic or circular harness solutions where a 3-pin low-voltage connector is required
Precautions
Always mate this male connector with a compatible 3-pin female connector designed for the same pitch and diameter.
Do not exceed the specified voltage and current ratings; verify the final rating according to your application and selected materials.
When soldering the pins to a PCB, follow recommended reflow or hand-soldering profiles to avoid damage to the plastic housing.
Keep contacts clean and free from dust, flux residue, or moisture to maintain low contact resistance and stable signal transmission.
Avoid excessive mechanical stress, twisting, or pulling on the connector after soldering; provide strain relief through housing design or cable clamping.
For outdoor or high-humidity environments, consider potting, sealing, or using protective housings to improve overall system reliability.
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