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Whichever side of the mating connector pairs that has a voltage present when disconnected should be the most physically protected, usually the female (socket) side. Based on that I would say the following would be the proper choice.
Thermistor – probably doesn’t matter
Thermal fuse – socket header on board (assumes a voltage would be present on the board connector if the pair were disconnected)
Battery power and ground – pin header on board
Ext relay – socket connector on board
Mike K5ESS
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
Sent: Tuesday, June 28, 2016 4:20 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Preferred orientation for each electrical connection ?
I'm making my first PCB for a thermostat for
an electric heater. I need to connect the
electronics to several outside components:
- a thermistor that goes in the oven
- an thermal fuse to shut off power if it gets too hot
- battery power & ground
- 3-conductor connector to an external solid-state relay
I plan to use pin headers and matching sockets for each of
these four connections. For each of these four connections,
what criteria should I use to determine whether to put the
pin header on the PCB and the matching socket on the connect-
ing cable, or vice versa ?
The thermostat itself and the SSR will fit into a plastic box that
also contains the battery. So my question pertains to orient-
ing the headers/sockets inside the plastic box. None of
the connections will ever be disconnected without first removing
fo ur retaining screws from the lid of the plastic box.