WH-03-09 8–32V to 5V DC Converter, Connector Options

Provide a 5V supply from a compatible higher-voltage DC source. The WH-03-09 buck converter comes with several output connection formats. It is for makers matching a fixed DC conversion stage to a project.

• ✅ Convert a suitable DC source — The specified input range covers 8–32V.
• ✅ Choose the output connection — USB-C, micro-USB, USB-A and wire variants are separate.
• ✅ Fit a compact supply stage — A small enclosure suits a project layout.
• ✅ Avoid an AC conversion step — The converter operates from DC input.

Check the source, polarity and load

The range is described as 5V up to 3A, but the actual selected variant's total current limit must be verified. Dual outputs do not automatically provide the full rating independently on both ports.

This is a voltage converter, not a complete battery-charging controller. Check the load's required charging protocol and protect the source wiring appropriately. A waterproof title does not establish a tested ingress rating.

Technical details

• Model: WH-03-09
• Input: 8–32V DC
• Output label: 5V, up to 3A
• Size stated: Approximately 63 × 14 × 27 mm
• Weight stated: 50 g
• Options: USB-C, micro-USB, single/dual USB or wire output
• Polarity protection: Described

Choose the connector and verify the electrical load before adding a 5V rail to your project.

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