This post explains for the transistor.

The Part Number is B1151, 2SB1151.

The function of this transistor is -60V, -5A, PNP Transistor.

The package is TO-126 Type

Manufacturer: NEC

Pinout

Description

The B1151 is a Low Vce(sat) transistor which has a large current capability and wide SOA.

It is suitable for DC-DC converter, or driver of solenoide or motor.

Features

1. Low Collector Saturation Voltage

2. Large Current

3. High Total Power Dissipation : Pt = 1.3 W

4. Complemantary to 2SD1691.

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Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = – 60 V

2. Collector to Emitter Voltage: Vceo = – 60 V

3. Emitter to Base Voltage: Vebo = – 7.0 V

4. Collector Current: Ic = – 5.0 A

5. Total Dissipation : Pc = 1.3 W

6. Junction Temperature: Tj = 150°C

7. Storage Temperature: Tsg = -55 ~ +150°C

 

B1151 PDF Datasheet

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Marking : C32725, Part Number: BC327-25

Function: 45 V, 500 mA PNP general-purpose transistor

Package: SOT-54 Type

Manufacturer: Philips, NXP

Images:

Description

C32725 is 45V, 500mA, PNP general-purpose transistor. 

PNP transistors comprise the following key components:

 

Features

1. High current

2. Low voltage

 

PNP transistors control the flow of a large current (collector current) between the emitter and collector using a small current applied to the base (base current). When a base current flows, the PNP transistor permits the flow of electrons from the emitter to the collector, resulting in an increase in collector current. Reducing the base current reduces the collector current. Consequently, PNP transistors are valuable electronic components for controlling large output currents with small input currents.

PNP transistors find applications in amplifiers, switches, amplitude modulators, power amplifiers, and various circuit designs, playing a crucial role in electronic devices and circuitry.

Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = – 50 V

2. Collector to Emitter Voltage: Vceo = – 45 V

3. Emitter to Base Voltage: Vebo = – 5 V

4. Collector Current: Ic = – 500 mA

5. Total Power Dissipation: Ptot = 625 mW

6. Junction Temperature: Tj = 150°C

7. Storage Temperatue: Tsg = -55 ~ +150°C

 

Applications

1. General-purpose switching and amplification

 

C32725 PDF Datasheet

 

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