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Help with shunt and series feedback connections

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jandromez

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Dear all,

I've done the design of a feedback amplifier with a BJT using a SOT143 BFP181. My question is regarding to the PCB layout: How do I connect the series feedback resistor if the SOT143 package has 2 emitter pins? I'm a kind of newbie to layout designs.

Any tips to the connection of the different elements?

Thanks.

FB amplifier.png
 

You don't know the layout of the transistor internally, so I'd connect the emitter resistor between the 2 emitter pins as close as possible.
 

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