Transistor BC557 PNP, 0.1A TO-92

Transistor BC557 PNP, 0.1A TO-92

Transistor BC557 PNP, 0.1A TO-92

Transistor BC557 PNP, 0.1A TO-92

Transistor BC557 PNP, 0.1A TO-92

Transistors

Reference: TRBC557

Part.No: BC557

€0.50

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The BC557 is a widely used PNP Bipolar Junction Transistor (BJT) in a TO-92 package, the complementary counterpart to the BC547. Suited for current-sourcing, small-signal amplification and switching in low-power circuits.

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Description
Product Details

BC557 PNP Transistor - Complement to BC547 for Switching & Amplification

The BC557 is a general-purpose PNP transistor in a TO-92 package, commonly paired with the NPN BC547 in complementary push-pull and current-sourcing designs. It offers the same reliable gain and low-power switching capability, making it a staple for hobbyist and educational electronics.

Functions & Applications

PNP Complement to BC547: Enables complementary push-pull and current-source topologies.
High DC Current Gain (hFE): Efficient for small-signal amplification stages.
Standard TO-92 Package: Through-hole, breadboard and PCB friendly.
MCU Ready: Works well with 3.3V/5V logic when used as a high-side switch.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	PNP
Package / Case	TO-92
Collector-Emitter Voltage (Vceo)	45V
Max Collector Current (Ic)	100mA
Power Dissipation (Pd)	500mW
Mounting Type	Through-Hole (THT)

Frequently Asked Questions

Q: What is the complementary NPN part for the BC557?
A: The complementary NPN transistor is the BC547, sharing the same voltage and current ratings.

Q: Can the BC557 be used as a high-side switch for a 5V load?
A: Yes, as long as the load current stays below 100mA (Ic), the BC557 can source current to the load from the positive rail when driven with a suitable base resistor.

Note: Price refers to one (1) piece. The component is shipped in bulk without individual packaging.

Transistor Type: BJT (Bipolar Junction Transistor)
Transistor Polarity / Channel: PNP
Transistor Case Style: TO-92

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