8550W 。 Complementary pair with 8550W.  / Applications 。 Power amplifier applications. / Equivalent Circuit / Pinning 3 21 PIN1：Emitter PIN 2：Base PIN 3：Collec.

。 Power amplifier applications. / Equivalent Circuit / Pinning 3 21 PIN1：Emitter PIN 2：Base PIN 3：Collector / M.

SOT-323 NPN 。Silicon NPN transistor in a SOT-323 Plastic Package.  / Features 8550W 。 Complementary pair with 8550W.  / Applications 。 Power amplifier applications. / Equivalent Circuit / Pinning 3 21 PIN1：Emitter PIN 2：Base PIN 3：Col.

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