This post explains for the Transformer.

The Part Number is EE19.

The function of this semiconductor is Rapid Power Transformer.

Manufacturer: Power Integrations, FPE

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Description

EE19 is Rapid Power Transformer. Transformers are electrical devices that transfer electrical energy from one circuit to another through electromagnetic induction. They are commonly used to change the voltage level of an alternating current (AC) electrical signal. Transformers come in various types and designs, including power transformers, distribution transformers, and more, each designed for specific applications.

Features

1. High insulation type High efficiency

2. IEC60950 Compatible

3. Operating temperature range : -40℃to +85℃

 

Applications:

1. Lighting

2. White Goods

3. Metering

4. Telecom

5. Industrial Controls

6. Stand-by Power

7. Charging

EE19 PDF Datasheet

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This post explains for the PNP Transistor.

The Part Number is A19302, SA1930.

The function of this semiconductor is -180V, -2A, PNP Transistor.

Manufacturer: Toshiba Semiconductor

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Description

This Transistor is -180V, -2A, Silicon PNP Epitaxial Type Transistor. A1930 is one of the semiconductor components used in electrical engineering and electronic circuit design, belonging to the Bipolar Junction Transistor (BJT) family. The PNP transistor consists of three layers of semiconductor material: P-type, N-type, and P-type, each with different charges. The name PNP transistor stands for “Positive-Negative-Positive,” reflecting the characteristics of these three semiconductor layers.

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

 

Features

1. High transition frequency: fT = 200 MHz (typ.)

2. Complementary to 2SC5171

 

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Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = – 180 V

2. Collector to Emitter Voltage: Vceo = – 180 V

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

4. Collector Current: Ic = – 2 A

5. Collector Dissipation : Pc =  2 W

6. Junction Temperature: Tj = 150°C

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

 

Applications

1. Driver Stage Amplifier

2. Power Amplifier

 

A1930 PDF Datasheet