2006-12-23 14:01:27 · 5 answers · asked by rfbuhrow 1 in Science & Mathematics ➔ Engineering
don't see why not. do you? try it, what's it going to hurt? it's called experimenting, you might be onto something. why not go for an fr 159 or 162?
2006-12-23 14:04:30 · answer #1 · answered by ? 3 · 0⤊ 1⤋
Can I use a fr153 diode in place of a fr157 diode in a power supply ?
Generally speaking, you can substitute a diode with a higher Peak Inverse Voltage rating for one with a smaller PIV rating. Look up the specs in a reference manual or online, if they are listed on line. Make sure that the peak forward current rating is the same or higher, and the PIV is also the same or higher. For a power supply, those are the most important specifications.
24 DEC 06, 0404 hrs, GMT
2006-12-23 23:00:44 · answer #2 · answered by cdf-rom 7 · 1⤊ 1⤋
According to the datasheet the only difference is that the 157 can block 1000V and the 153 can block 200V. Also the reverse recovery time is 3 times longer with the 157. This would not be important unless your power supply is running high frequencies.
2006-12-23 22:09:45 · answer #3 · answered by rscanner 6 · 0⤊ 2⤋
No.
The maximum RMS voltage is 10 times higher in the FR157 (70 vs. 700) and the maximum DC blocking voltage is 5 times higher in the FR157 (200 vs. 1000)
I wouldn't chance it - even if it appears to work normally - it won't for long.
2006-12-24 00:31:29 · answer #4 · answered by LeAnne 7 · 0⤊ 1⤋
It depends what else is in the power supply circuit.
2006-12-23 22:04:19 · answer #5 · answered by Piguy 4 · 1⤊ 1⤋