I'm working on an SWR Workingman's 12 combo(100 watts). I need a full wave bridge rectifier. I have the schematic, but it doesn't show a spec for the rectifier. I checked the board and the spacing looks like .5 inches between legs. I'm thinking 5amp at 400+ volts should be enough. Any thoughts?
With 4 ohm load, 100W requires 5 amps. I think you need some leeway there. I would guess 8 to 10A would be much more reliable.
First, what numbers are printed on the part?
It's a DB604. According to the datasheet that's a 400V, 3A.
I saw that data sheet, but in general I expect a 604 bridge to be rated at 6A 400v. In any case 6A sounds like a better choice than 3A here. Or 8A even.
I agree. Thanks for the input. I'm wondering if this part had been replaced before. The board is marked with an X next to the part and the size is a little too small. The legs were bent out a little to get them through the board.
I could be wrong, but I often mark boards when I work on them just for reference. I suspect your X is really a +. Someone marked the + corner so they wouldn't have to figure it out later.
Quote from: mikebarg on December 10, 2021, 10:08:58 PM
It's a DB604. According to the datasheet that's a 400V, 3A.
Quote from: Enzo on December 10, 2021, 10:34:20 PM
I saw that data sheet, but in general I expect a 604 bridge to be rated at 6A 400v.
Was that a download, or was it the 'specs' listed on the datasheets360 page?
That 'specs' page looks to be their own list with a typo. The pdf they offer on that page shows the part to be 6A. (see attached)
That makes since. It wouldn't be the first time I got inaccurate information online.
I went ahead and pulled the part and it tested good. So, I need to go back and re-evaluate.