Car amp. transistors.

[Matt Flax the original flatmax]

HI I am in the process of fixing a car amp.
These transistors are clean blown off ! I don't know how it happened
'cause it arrive to me in this shape.

Anyways I have these transistor packages to replace :
http://www.pgb.unsw.edu.au/~flatmax/burntTransistors.jpg

The packages say (on the casing) :
SEC
629
IRFZ34

Could anyone tell me how to find an equivalent (or the same) package ?

thanks
Matt

 

[Chaos Master]

Matt Flax the original flatmax([email protected]) showed us the
following results:

Could anyone tell me how to find an equivalent (or the same) package ?

It is an IRFZ34 from International Rectifier.

http://www.google.com/search?q=IRFZ34 gives a good amount of results.

NTE2389 replaces it. http://www.nteinc.com/specs/2300to2399/NTE2389.html

[]s
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---------------------. -- Evanescence, "Going Under"

 

[Phil Allison]

"Matt Flax the original flatmax"

The packages say (on the casing) :
SEC
629
IRFZ34

Could anyone tell me how to find an equivalent (or the same) package ?

** Farnell sell the IRFZ34E ( 60 volt rated) for about $2 a piece.

Cat 168-180.




.............. Phil

 

[Chuck]

Here's the datasheet:
http://www.irf.com/product-info/datasheets/data/irfz34.pdf
Parts should be available from any International Rectifier distributor.
--Chuck

 

[Jerry G.]

You can use the ECG289 or NTE289 from Philips. Many of the parts dealers can
have these. If these are blown, you better check all the drivers down the
line from them. There are most likely other support components that are
damaged as well.

These usually blow from the radio being over driven, or the speaker wires
were shorted. This repair will be very expensive just for the parts alone!

The transistor you want is standard, and is available most anywhere.

--

Jerry G.
=====


message HI I am in the process of fixing a car amp.
These transistors are clean blown off ! I don't know how it happened
'cause it arrive to me in this shape.

Anyways I have these transistor packages to replace :
http://www.pgb.unsw.edu.au/~flatmax/burntTransistors.jpg

The packages say (on the casing) :
SEC
629
IRFZ34

Could anyone tell me how to find an equivalent (or the same) package ?

thanks
Matt

 

[Ampdoc]

IRFZ34 available from Digi-key http://www.digikey.com , East Coast
Transistor www.kenwoodparts.com . Can be replaced with IRFZ44 for an
upgrade. Usual causes for failure like this in a car audio amp DC-DC
converter is shorted finals, too low impedance load, low voltage, or some
dummy hooked it up backwards. Make sure to check the gate bias resistors,
and if this one uses a TL494C PWM controller, check the transistors that
drive the FET's. A quick-n-dirty way to check most of these car amp power
supplies is to remove the bad FET's and power up the amp, and use a
oscilloscope to check for a clean square wave with little or no DC at the
connection the FET gate goes to. This eliminates putting in new FET's only
to cook them in the event the PWM/drivers were damaged. Also check the
reverse-bias diode connected across the battery terminals. If the unit was
connected backwards, it may be shorted.


--
Jammy Harbin
J & J Electronics, Inc.
227 S. 4th St.
Selmer, TN 38375
731-645-3311