IP323T-15 Replacement

[mkay9]

Hi does anyone have any suggestions for replacing an IP323T-15 voltage regulator? I have accidently broken one of the legs while adding a new heatsink and need to swap the part out.

It has a 3A output..

Data Sheet Spec.
IP323T15
Fixed Positive Voltage Regulator
Integrated Power Semiconductors
Output Voltage Nominal (V)=15
Load Current Max. (A)=3.0
Tolerance (%)=1.0
Drop-Out Volt Max.=2.9
P(D) Max.(W) Power Dissipation=25
Supply Voltage Maximum (V)=25
Status=Discontinued
Package=TO-220
Pins=3
Military=N

 

[Hero999]

I couldn't find the datasheet but I read it's discontinued.

I found the KA78T15 which should be a suitable replacement. Check the pinout though, it might not be the same so you may have to reverse it.

http://www.datasheetcatalog.org/datasheet/fairchild/KA78T15.pdf

 

[mkay9]

Where to buy a KA78T15

Hi, Does anyone know where i can get a KA78T15 or similar in the UK..

 

[eeguy]

7815 is a general purpose voltage regulator. Search any UK-based electronics distributor for "7815" and narrow your search by specifying the parameters you need. The 3 amp model seems like a tough one to find, but, if your application permits, you can use a power transistor to beef up the current output...

 

[Hero999]

The tolerance of the LM7815 is 4% which is worse than the part specified which is 1% which might not be a problem but it could be if it's being used as a reference.

I didn't notice this before, when I made my previous post.

 

[eeguy]

If you don't mind me asking, where did you get the original specs you posted? Do you know them to be absolutely true?

There is an LM323, but it has a +5v 3A output...another thought to ponder. (7.5 to 15v input, +5v out +/-5%)

 

[Hero999]

I've not seen the specification, other than what the original poster posted, it might be wrong.

There are lots of 15V 3A linear regulator ICs, I couldn't find one with a tolerance of 1% though, perhaps he confused it with the regulation factor?

 

[eeguy]

Not sure. I do know that there are a lot of "datasheet websites" resulting from google searches that have "accurate information".
It looks like a copy paste from this, which is why I asked.

 

[mkay9]

voltage regulator

The data sheet was located on the internet as the item is dicontinued.

The origional part that requires to be replaced is from a 24v dc to 12v dc converter which produces a 3amp output. While settining it up on a new heatsink I broke one of the legs off hence the need to replace it.

Its a 12v output but utilises a 15v regulator, there appears to be a couple of capacitors in the circuit which I assume bring the voltage to 12v

 

[mkay9]

Not sure. I do know that there are a lot of "datasheet websites" resulting from google searches that have "accurate information".
It looks like a copy paste from this, which is why I asked.

Yeah the data sheet was sourced from the net as the part is discontinued.

The voltage regulator is from a 24v dc to 12v dc converter with a 3amp output. It seems to have a couple of capacitors
on the output side which I assume will bring the 15v down to 12v.. I snapped one of the legs off while installing a new
heatsink hence the need to replace it like for like. Any help on where to source a replacement
would be much appreciated..

 

[Hero999]

The capacitors are for filtering and have nothing to do with voltage conversion.

The circuit will probably be fine if it's replaced with a 3A version of the 7815.