[Boatanchors] OT : TVS DIODES

[Dick KF4NS]

I know this is a bit off topic but with all the knowledgeable guys here when it comes to some of  the 
new stuff, I hope someone can help.

I have put together a battery eliminator for use of my HT in the car, built into a gutted battery pack. I 
have all the components selected including ferrite beads for the + - leads from the cigar lighter which 
is fused at 2A, fed to a 7812 regulator having in and out capacitors as recommended in the applications 
page from the spec sheet.

It has come to my attention that I could protect the input from EMI RFI and surge by adding a TVS diode 
in the power leads. After studying the wealth of information available on the INET, I am so confused 
about how to choose the appropriate diode. The filters that Mouser lists for selection of a diode have 
left me totally in doubt. I am referring  to the INFINEON brand of  diodes.

Anyone with any experience and advice to share would be greatly appreciated.

73, Dick KF4NS
St Petersburg, FL 33714 USA
Keep The Glow!