Diodes question

[Crambone]

I’m rebuilding a rectifier board and need to replace some diodes.
10D10
1S1942
V06B
Not sure what to replace them with, would like to order at mouser

[ArthurDent]

Depends. If the slightly larger lead diameter isn't a problem probably the 1N5408 will work in all locations. Do a Google search to check. If the current isn't over an amp then maybe the 1N4007 would work to replace all and be the same physical size.

[floobydust]

It sounds like a Yaesu FT-101, FT-901, FT-902, FL-2100 power supply board.
The hassle is most diodes are 1A or 3A, either a bit light for the rating or a bit fat.
10D10 1,000PIV 1.5A DO-41/DO-204AL package, 0.8mm leads. Replacement would be 1N5399.
Upgrades could be BYT78 3A 1,000PIV soft-recovery in smaller SOD-64 glass package (like SF5408) but fatter 1.3mm leads might not fit the pcb without reaming.
UF5408 3A 1,000PIV soft-recovery but it's double the size and same fat 1.3mm leads. I find vanilla 1N5408's slow switching (recovery) at high voltages and no longer use them.

1S1942 200PIV 0.5A DO-15 package, 0.8mm leads. Replacement would be 1N4004-1N4007 or UF4004-4007.

V06B 100PIV 1.4A DO-15 package (some pics SOD package), 0.8mm leads. Replacement would be FR203-FR207 or HER203-207 at 2A.

Twirling an Exacto knife will easily ream the pcb holes 0.5mm larger, so I would use the SOD-64 glass packaged parts and maybe use all BYT78/SF5408's on the board.

[greenpossum]

Datasheet for 1S1942 is here: https://www.digchip.com/datasheets/parts/datasheet/939/1S1942-pdf.php

A 1N400x with 200V+ reverse holdoff should do. You can search which x is >= 200V.

[Crambone]

Thanks guys

[tkamiya]

I recall 10D10 as 1000 volt 1.0 amp.  It was this way in 1980s.  Spec may have changed, but if you are dealing with older equipment, that's what it was in 80s.

[AnasMalas]

Twirling an Exacto knife will easily ream the pcb holes 0.5mm larger, so I would use the SOD-64 glass packaged parts and maybe use all BYT78/SF5408's on the board.

Yeah about that. I dont know if this device has a single sided PCB where this would be no problem, or if it is a more modern plated through hole, but yeah you definitely dont want to do this to a plated through hole. Instead if the lead doesnt fit, maybe file/grind that down instead

[floobydust]

The Yaesu rectifier boards are single-sided, they are have high voltage. The problem is 3A diodes have huge fat 1.3mm leads and the next step down is 1A parts.
People sell replacement Yaesu rectifier pc boards with upgraded (3A 1000PIV) diodes on eBay.
https://harbachelectronics.com/product-category/yaesu/