This is just a 'heads-up' when dealing with Rapid...

Avoid the 'own-brand' products (eg TruSemi for Semiconductors, or TruCap for Capacitors etc) and pick a known branded product if at all possible. I can't confirm it, but based on the number of rejects we have experienced, these could be B, C or even D grade components.

I've got TruSemi 78L05's which are the closest thing to a dead-short giving 18vDC on your boards 5v rail... and I've others which vary between 4.1v and 5.9v depending on whether you are drawing a milliamp or two!

Sometimes too cheap is just that, and we have to remind ourselves of John Ruskin's poem...