[Eeyore]

Jamie wrote:

that diode is suppose to go across the motor leads to suppress back
EMF which can damage components..
It would be a simply low current SI diode.

In which case putting in something bigger like a 1N400x ot UF400x if it has
to be a fast device would do no harm.

I've known 'back emf diodes' like the 1N4148 to be 'killed' by even modest
size relays. I never 'cut corners' on that component any more. 1N400x every
time.

Graham