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uRelay.zip

author: tubs
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2 layer board of 1.05 x 0.74 inches (26.6 x 18.7 mm)
Uploaded: April 21, 2017
Shared: April 21, 2017
Total Price: $3.80

Micro Relay Board

I designed this to use a small signal relay () with a small package to use in many of my projects that need a relay without a log of space available. The silkscreen for the relay contacts are reversed and haven t had the motivation to update it as I am probably going to be the only person using it, but just in case I wanted any else to be aware of that. The board uses a sot-23 diode as a flyback diode across the relay coil, and it is input signal is active high which drives a transistor to pull the relay to ground. So the signal input does not directly drive the relay because that might pull more current than a microcontroller can provide from a single pin. The two pin header is there to easily check that the relay functions them out. Design is about as small as I could make so the fab costs are pretty low.

Micro Relay Board

I designed this to use a small signal relay () with a small package to use in many of my projects that need a relay without a log of space available. The silkscreen for the relay contacts are reversed and haven t had the motivation to update it as I am probably going to be the only person using it, but just in case I wanted any else to be aware of that. The board uses a sot-23 diode as a flyback diode across the relay coil, and it is input signal is active high which drives a transistor to pull the relay to ground. So the signal input does not directly drive the relay because that might pull more current than a microcontroller can provide from a single pin. The two pin header is there to easily check that the relay functions them out. Design is about as small as I could make so the fab costs are pretty low.

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      Hey there! Before ordering, make sure you have all the info you need to complete and use this design. This usually means a component list, and sometimes additional information such as assembly notes, source code, or usage guides.
      Since this is a project designed by a community member, it may contain design errors that prevent it from working as intended. OSH Park cannot place any guarantees about the functionality or correctness of the design.
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