Transistor

S9012 Transistor – 25V, 0.5A, PNP, TO-92

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Part number: S9012

Functions: -25V, -0.5A, PNP Transistor

Package information:  TO-92 Type

Manufacturer: WEITRON, Secos

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S9012 Transistor

Description

The S9012 transistor is a PNP general-purpose small-signal transistor. Often paired with the S9013 (NPN) transistor to form complementary circuits such as push-pull amplifiers. It is widely used for low-power amplification and switching applications.

Features

1. High total power dissipation. (PT:625mW)

2. High collector current. (IC:500mA)

3. Complementary to S9013

4. Excellent linearity.

Pinout

S9012 datasheet pinout

 

Absolute Maximum Ratings (Ta = 25°C)

1. Power dissipation : Pcm = 0.625 W

2. Collector current : Icm = -0.5 A

3. Collector-base voltage : V(br)cbo = -40 V

4. Collector-Emitter Voltage : Vceo = -25 V

5. Emitter-Base Voltage : Vebo = -5 V

Typical Applications

1. Audio Amplifiers

Used for low-frequency signal amplification in radios and small amplifiers.

2. Push-Pull Amplifiers

Often combined with S9013 (NPN) to form Class AB push-pull stages.

3. Switching Circuits

Suitable for driving LEDs, buzzers, and small relays.

4. Sensor Interfaces

Amplifying or inverting signals from sensors.

5. General Purpose Amplification

Widely used in educational kits, small-signal analog circuits, and prototyping.

S9012 Datasheet PDF

S9012 transistor

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L7805 PDF Datasheet – 5V, Voltage Regulator

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This regulator is a popular three-terminal positive voltage regulator IC. It is used to provide a regulated +5V output in various electronic circuits.

Part number : L7805, L7805CV3

Functions : 5V, Voltage Regulator

Package: TO-220, TO 220FP, D2PAK, TO-3 Type

Manufactures : ST Microelectronics

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L7805 5V Voltage Regulator

 

Description

This IC is part of the L78xx series, which includes regulators with different output voltage options. This regulator operates by taking in an unregulated input voltage, typically higher than +5V, and regulating it down to a stable +5V output. It can handle a wide range of input voltages and provide a regulated output with low ripple and noise.

The L7805 series of three-terminal positive regulators is available in TO-220, TO-220FP, TO-3 and D2PAK packages and several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents.

Pinout

L7805 pinout datasheet

 

Features

1. Output current to 1.5A

2. Output voltages of 5 V

3. Thermal overload protection

4. Short circuit protection

5. Output transition SOA protection

 

Applications

1. Microcontrollers, digital logic circuits, and other electronic components

 

L7805 Datasheet

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