Compact 3-Pin AC Connector for 225kHz Induction Heater, 6A, Under $3, 1/2 Diameter

Hey everyone,

I'm working on an application for an induction heating circuit. I need to find a suitable three-connection plug / jack for a connection between the capacitors and the working coil.

There is one positive and two ground connections & the resonating frequency is about 225 khz. It also draws 5 to 6 amps, max. I was wondering if someone could tell me what the best-suited (& most compact) connector would be for this purpose. Here are a few preferences:
- Compact shape (1/2" diameter or less)
- $3 each or less (planning on ordering 50-100)
- 6 amps (ac) rating

I tried a 3.5mm stereo jack (3 connections) just for the hell of it, but I’m assuming the connections aren’t robust enough to handle the current. My next thought was possibly a mini xlr plug, but the ones I’ve seen are a little bulkier than I'd like (larger than .5" diameter & a little long), and somewhat expensive (more than $3). Any other ideas?

Thanks in advance.

Chassis mount? User accessible?

From your photo and assuming the connector is inside a chassis, I would think any number of crimp/solder type modular connectors would suffice. Use the Digikey product search, specifying current, voltage requirements, pin count, etc.