pnp and npn quad transistor array

[peterthenovice]

I am looking for a ic that has two npn trasistors and two pnp trasistors

[c4757p]

Just go to Mouser or DigiKey and search - this is an easy one and it's good to get used to the search tools. At Mouser, go to "Transistors Bipolar - BJT" and you can search for arrays by choosing "quad" as the configuration. They're a bit scarce - Mouser has just three NPN/PNP arrays in stock.

[peterthenovice]

I found a quad package on ebay from china that is 5$ plus 1 cent for each additional chip.

[c4757p]

Be careful that there is nothing wrong with it.

[mariush]

DIP: http://uk.farnell.com/that-corporation/that340p14-u/transistor-array-dip14-340/dp/1354180
SOIC: http://uk.farnell.com/that-corporation/that340s14-u/transistor-array-smd-so-14-340/dp/1354179

More expensive but no tricks with shipping fees like you get on eBay, and some guarantee they're original.

But I'd say consider getting two npn+pnp chips, they're more readily available, cheaper, and potentially take up less board space and they're super cheap : uk.farnell.com/nxp/pumd13/transistor-digital-dual-sot-363/dp/8738327RL

[amspire]

But I'd say consider getting two npn+pnp chips, they're more readily available, cheaper, and potentially take up less board space and they're super cheap :
http://uk.farnell.com/nxp/pumd13/transistor-digital-dual-sot-363/dp/8738327RL

This is no good at all if you need a matched NPN pair and a matched PNP pair for current mirrors, differential amps, multipliers, log-antilog circuits, etc. If you don't need matched pairs, you can just use cheap single transistors anyway.

It traditionally was hard to get good NPN transistors and good PNP transistors on the same die so that is why arrays like the CA3046 with only NPN transistors were common. The PNP transistors often used to end up as slower lateral transistors with poor gain and bandwidth.

I have never heard of the THAT340P14-U mentioned above, but it looks like the THAT corp has done a good job with 300MHz+ NPN and PNP transistors, and a typical offset of 0.5mV for both.

[peterthenovice]

I was going to use the chip package on a bread board for experimenting with pnp & npn transistors. what would be the best way to do this. should a use single transistor packages.

[c4757p]

Just "experimenting with transistors"? A pile of five-cent PNP and NPN transistors would probably be the best way to do that. I recommend PN2222 and PN2907.

[peterthenovice]

thanks for the advice.

[casinada]

2N3904/2N3906
BC547/BC557
You can find them very cheap. Buy them in 25, 50, or even in 100 for less than $10
The ones in Dip packaging, if you ruin one you might ruin the other as well or you'll have to remember which one is bad.
 

[SeanB]

MPQ6502. 2 NPN and 2 PNP in a DIL package.

[peterthenovice]

I think a will get a 100 transistors for about 6$ on ebay. It may take a while but it will be well worth it. maybe 2n2222 transistors

[c4757p]

You'll pay the same on Mouser and you will know they are good. And don't forget the PNP.

[amyk]

I was going to use the chip package on a bread board for experimenting with pnp & npn transistors. what would be the best way to do this. should a use single transistor packages.

And this is why it's always a good idea to tell us your application before just asking about a specific part.