are these suitable replacement parts?

[russdeanlee]

are these suitable replacements the part numbers are from digikey

fep16dt MUR2020CTPBF-ND or MUR1620CTPBF-ND
fen16dt MUR1620CTRGOS-ND
mc7815ct MC7815CTGOS-ND or LM7815CTFS-ND or LM340T-15-ND
mc7915ct MC7915CTGOS-ND or LM7915CT-ND or LM7915CTFS-ND
ndp7050 NDP7060-ND

new to this replacing parts thing any help please?

[Chris Daly]

Originally Posted by russdeanlee

are these suitable replacements the part numbers are from digikey

fep16dt MUR2020CTPBF-ND or MUR1620CTPBF-ND
fen16dt MUR1620CTRGOS-ND
mc7815ct MC7815CTGOS-ND or LM7815CTFS-ND or LM340T-15-ND
mc7915ct MC7915CTGOS-ND or LM7915CT-ND or LM7915CTFS-ND
ndp7050 NDP7060-ND

new to this replacing parts thing any help please?

7815 is a positive voltage regulator and can be replaced with preferably known brand like national Fairchild, ON ST 7815, a 7815 is supplied in a number of packages designating its current rating, these are normally TO3, TO220 , TO92 and smaller still surface mount parts that are still 7815. The Pin out for the TO220 the most common is Vin Gnd Vout
It is usual to have at least 3 volts higher on Vin = 18v for the 7815 to regulate properly.
The 7915 is a negative 15v regulator and TO220case Pinout Gnd In out.
Very rarely these parts are used in unconventional ways like UK Brand Quad Tuners and Preamps,

The MUR parts are Diodes with various current and transition ratings, You can usually Google search this info to ascertain voltage physical size and current ratings. I recall an earlier search for these parts on a forum question, so it looks like some of these car amps and bits need a bit more thought... to assist. Whilst there are specialist diodes in TO220 packages that have very fast characteristics they generally all do the same thing. They are an Anode current entering path ( From the Latin word meaning Way In as was common over doorways - a few years before I was alive ) and Cathode, sometimes seen as Kathode on German and Russian schematics meaning current leaving path ( way Out ). Their effect is to block current returning from their placed direction, and they do this reliably - however they also give up a tiny amount of voltage in the opposite direction- an asset that is used to create such things as voltage references, and many other circuits.

The NDP7050 is a N Channel Field Effect transistor. With any transistor observe its correct pinout and if it needs insulation of its case to heat sink.

For any repair a schematic diagram is your best friend. Unless the designer has made errors - (which sadly does creep in because of economic decision )
it is best replace parts with the same or slightly higher current ratings.

A very useful circuit in car audio and other electronic circuits is a diode to protect against polarity reversal ( assuming single voltage supply )which usually has 1 of 2 forms firstly the anode of a suitable diode extending from ground to that diodes cathode toward the positive voltage supply, and secondly a diode in series with the positive supply the latter form losing typically .7v, and the former marvelously not dropping voltage. I recall many a car stereo installed with this circuit, and replacing that diode to get the device operational again.

Hope this helps Cheers / Chris

[russdeanlee]

can someone reference me with the best replacement parts with the same or slightly higher current ratings for:
fep16dt
fen16dt
mc7815ct
mc7915ct
ndp7050
with exact digikey or mouser part numbers

[mike49504]

Are you sure that the FEN ,FEP ,7915 and 7815 parts are bad ?

[Perry Babin]

The first in each line that you posted should be OK except possible for the 2020. IT may work but I'd use the MUR1620CT.