This is a kind of NPN Transistor.

C547B Datasheet learn more.

Part number : C547B, BC547B

Functions : 45V, 100mA, NPN Transistor

Package information : TO-92 Type

Manufacturer: NXP, Fairchild

Image :

The texts in the PDF file :

NPN general purpose transistors, especially suited for use in driver stages of audio
amplifiers, low noise input stages of tape recorders, HI-FI amplifiers, signal processing
circuits of television receivers.

This device is designed for use as general purpose amplifiers and switches requiring collector currents to 300 mA.

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Pinout

Absolute Maximum Ratings

1. VCEO : Collector-Emitter Voltage = 45 V
2. VCES : Collector-Base Voltage = 50 V
3. VEBO : Emitter-Base Voltage = 6.0 V
4. IC : Collector Current – Continuous = 500 mA
5. TJ, Tstg:  Operating and Storage Junction Temperature Range = -55 to +150 °C

Features

1. Low current
2. Low voltage
3. Three different gain selections

Applications
1. General-purpose switching and amplification

C547B Transistor PDF File

 

 

Part number : J6920

Functions : 1700V, NPN Triple Diffused Planar Silicon Transistor

Package information : TO-264 Type

Manufacturer: Fairchild Semiconductor ( onsemi.com )

Pinout :

 

Features :

1. High Collector-Base Breakdown Voltage : BVCBO= 1700V

2. Low Saturation Voltage : VCE(sat) = 3V (Max.)

3. For Color Monitor

Images

Absolute Maximum Ratings

1. Collector to Base Voltage : Vcbo = 1700 V

2. Collector to Emitter Voltage : Vceo = 800 V

3. Emitter to Base Voltage : Vebo = 6 V

4. Collector Current : Ic = 20 A

5. Total Dissipation : Pc = 200 W

6. Junction Temperature : Tj = 150°C

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

 

J6920 Datasheet PDF Download

Other data sheets within the file : FJL6920, J-6920