Matched Transistor Arrays


Several designs in our product range require matched transistor pairs for optimum performance.

Devices used in our products:-

Configuration
Integrated Circuit
Sub-Assembly
Dual NPN
Dual PNP
Dual NPN + Dual PNP

Suitable thru-holes devices include: 2SC3381, 2SC1583, MAT-02, LM394, SSM2210, THAT3xx, however some of these devices are now hard to source.

The Dual Sub-Assemblies comprise a dual-matched SMT transistor pair mounted on a 6-pin DIP carrier. These can be used in place of the integrated circuit devices as shown above .

It is also possible in some situations to use your own hand-matched devices. When doing so, you should use high-gain, low-noise audio transistors and achieve a Vbe matching within at least 2mV and, ideally, 0.2mV. The transistors are mounted as show here NB:you need to verify the footprint of the devices you are using to ensure they are mounted correctly.

NB: Our Dual Sub-Assemblies use a 6-pin footprint but are often placed onto an 8-pin DIP. Refer to this diagram for correct positioning .

 

Email:  elby-designs@bigpond.com
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