# NPN transistor

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#### Gregory

##### Member
I am looking for a equivelent for a transistor MPSA44 NPN
What is the most important spefications that I must look for when trying to find the equivelent.
There are some specification that are not that important.
Can you help me wth this .
Greg

#### ericgibbs

##### Well-Known Member
I am looking for a equivelent for a transistor MPSA44 NPN
What is the most important spefications that I must look for when trying to find the equivelent.
There are some specification that are not that important.
Can you help me wth this .
Greg
hi,
Its high voltage transistor.

Look at these clips, the items marked with an 'X' are important.

The datasheet states its for telecomms applications, so what equipment is the device used in.?

http://www.onsemi.com/PowerSolutions/product.do?id=MPSA44RL1G

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#### mneary

##### New Member
The most important specifications are not on the data sheet. They are price and availability. Since the original MPSA44 is available worldwide at a reasonable price (typically US$0.33 retail; US$0.11 on ebay), you don't need a replacement.

If you believe that it is not available in your market due to some extraordinary circumstance, you can help us by editing your UserCP and revealing your location! And please tell why you believe that it is not available.

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