Sanken SAP17 replacment?

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This is at least the third time coming across a receiver with the same blown output type. Most of the time the customer agrees it's not worth spending more than a couple hundred bucks to repair as that's what they are worth to buy a working used one. But, I have a customer that wants it fixed even if it cost a few hundred bucks. I tried telling him that these devices are obsolete and very hard to find real ones but he wants me try.

For those that don't know the Sanken SAP17 is a darlington pair with bias diodes and emitter resistor all built into one package.


All that I can find are people in China selling them on Ebay which is a route I don't feel comfortable going because I don't want the customer spending big bucks to have it fixed and end up getting fake parts that either don't work properly or fail in a short period of time.

Does anyone have a reliable source for these?
 
Usually what fails in the SAP devices is the resistor.. which is why Sanken discontinued them and brought out the STD devices - which is the same chip, without the emitter resistor. As latala says, they can be used with external 0.22 ohm emitter resistors wired in place
 
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