2SB557 transistors equivalent, silicon pnp power transistors.
amplifier applications
*Recommended for 50W high-fidelity audio frequency amplifier output stage
PINNING(see Fig.2) .
*With TO-3 package
*Complement to type 2SD427
*High power dissipation APPLICATIONS amplifier applications
*Recommended for 50W high-fidelity audio frequency amplifier output stage
PINNING(see Fig.2) PIN 1 2 3 Base Emitter Collector Fi.
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