Zimo STACO3A Stay Alive

For MS/MX decoders but a less powerful solution.
PCB dimensions 14 x 7.3 x 2 mm. Wired separately from decoder – link up to decoder Common and Ground.
It is intended for use with small scale decoders without the high-capacity 16V stay-alive direct connections, e.g. MS480/490/500
The command station must have a track voltage of at least 12.5V (otherwise the capacitors will not charge) and a maximum track voltage of 18V.

2 x 0.3F caps (4mm dia x 12 mm length) = 150,000uF at 5.4V stepped-up on PCB