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replacement for a MR2504s power diode
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PeterSmith1954@googlemail
electronics forum addict


Joined: 04 Jul 2006
Posts: 79

PostPosted: Thu Jul 20, 2006 6:28 pm    Post subject: Re: replacement for a MR2504s power diode Reply with quote

jmariano wrote:
Quote:
Dear All,

I'm looking for a replacement for a power diode with reference MR2504s
that, as far as I
could find, was manufactured by Motorola a long time ago.
Does anyone have a suggestion? I could not find a datasheet on the web,
and the best I
could find ware the enclosed specs. I'm not sure about the
manufacturer, sice I don't have a way to compare my diode
to a datasheet. The markings on the diode body reads:

M (small M, motorola symbol?) MR2504S "diode symbol" 7515

The diode is used in the rectifying section os a tri phase hi-current
(30A) 50 V laboratory power supply.

Tank you very much

Jos Mariano
Dep. of Physics
University of Algarve


Specs:
Part Number = MR2504S
Description = Silicon Rectifier
Manufacturer = Motorola
V(RRM)(V) Rep.Pk.Rev. Voltage = 400
I(RM) Max.(A) Reverse Current = 100u
@V(R) (V)(Test Condition) = 400
I(RM) Max.(A) Pk. Rev. Current = 500u
@Temp. (C) (Test Condition) = 100
I(FSM) Max.(A) Pk.Fwd.Sur.Cur. = 600
V(FM) Max.(V) Forward Voltage = 1.15
@I(FM) (A) (Test Condition) = 79
@Temp. (C) (Test Condition) = 25
I(O) Max.(A) Output Current = 25
@Temp (C) (Test Condition) = 150
Status = Discontinued
Package = StR-10
Military = N


Motorola SPS morphed into On Semi a few years ago.

The part you are looking for is probably this:
http://www.onsemi.com/PowerSolutions/product.do?id=MR2504

The 'S' would be a location code (interesting you found some specs with
it but there's nothing at the OnSemi site - On Semi hs a good
reputation for maintating docs for even obsolete devices)

It's possible that the S is a packaging code, with the R in 'StR-10'
suspiciously reminding me of 'reverse' packaging codes. The device I
found however, is a power button.

You didn't say what the one you have looks like.

7515 would mean it was manufactured in work week 15 of 1975.

Cheers

PeteS
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jmariano
electronics forum beginner


Joined: 20 Jul 2006
Posts: 1

PostPosted: Thu Jul 20, 2006 3:09 pm    Post subject: replacement for a MR2504s power diode Reply with quote

Dear All,

I'm looking for a replacement for a power diode with reference MR2504s
that, as far as I
could find, was manufactured by Motorola a long time ago.
Does anyone have a suggestion? I could not find a datasheet on the web,
and the best I
could find ware the enclosed specs. I'm not sure about the
manufacturer, sice I don't have a way to compare my diode
to a datasheet. The markings on the diode body reads:

M (small M, motorola symbol?) MR2504S "diode symbol" 7515

The diode is used in the rectifying section os a tri phase hi-current
(30A) 50 V laboratory power supply.

Tank you very much

Jos Mariano
Dep. of Physics
University of Algarve


Specs:
Part Number = MR2504S
Description = Silicon Rectifier
Manufacturer = Motorola
V(RRM)(V) Rep.Pk.Rev. Voltage = 400
I(RM) Max.(A) Reverse Current = 100u
@V(R) (V)(Test Condition) = 400
I(RM) Max.(A) Pk. Rev. Current = 500u
@Temp. (C) (Test Condition) = 100
I(FSM) Max.(A) Pk.Fwd.Sur.Cur. = 600
V(FM) Max.(V) Forward Voltage = 1.15
@I(FM) (A) (Test Condition) = 79
@Temp. (C) (Test Condition) = 25
I(O) Max.(A) Output Current = 25
@Temp (C) (Test Condition) = 150
Status = Discontinued
Package = StR-10
Military = N
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