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See Technical Specifications

TIP121G +BOM

Medium Power NPN Darlington Bipolar Power Transistor

Manufacturer:

ON Semiconductor, LLC
Mfr.Part #:

TIP121G
Datasheet:

TIP121G Datasheet (PDF)
Case Outline:

221A-09
MSL Temp (°C):

0
Container Type:

TUBE
EDA/CAD Models:

Request Free CAD Models for TIP121G

Description

Here's a concise introduction to the TIP121G: The TIP121G is an NPN Darlington transistor from ON Semiconductor, packaged in a compact TO-220AB format. It features high DC current gain (hFE = 2500 typ) and can handle up to 5A of collector current. The device has a low collector-emitter saturation voltage (VCE(sat) ≤ 2.0Vdc at IC = 3.0Adc or ≤ 4.0Vdc at IC = 5.0Adc), making it suitable for applications requiring high current and low voltage drop. The TIP121G is designed with monolithic construction, including built-in base-emitter shunt resistors, which helps to improve its performance and reliability. The device also offers a high collector-emitter sustaining voltage (VCEO(sus) = 80Vdc), making it suitable for use in various electronic circuits, such as power supplies, motor control, and audio amplifiers.

Features

According to the product information, the features of the TIP121G include:

High DC Current Gain - hFE = 2500 (typ) @ IC = 4.0 A.dc
Collector-Emitter Sustaining Voltage @ 100 mA: VCEO(sus) = 80 Vdc (Min)
Low Collector-Emitter Saturation Voltage: VCE(sat) = 2.0 Vdc (Max) @ IC=3.0 A.dc, or 4.0 Vdc (Max) @ IC=5.0 A.dc
Monolithic Construction with Built-In Base-Emitter Shunt Resistors
Compact TO-220 AB Package
Pb-Free Packages are Available

Package

The package type of TIP121G is TO-220-3, which is a compact three-pin package.

Manufacturer

The manufacturer of the TIP121G is ON Semiconductor (formerly Fairchild Semiconductor). Onsemi is a leading supplier of power semiconductors, including transistors like the TIP121G. They are a global company with a rich history in the semiconductor industry, providing products for various applications such as industrial, automotive, and consumer electronics.

Applications

Based on the product features, the TIP121G is a Darlington NPN transistor suitable for power amplifier applications where high current gain and low saturation voltage are required. Common usage includes switch-mode converters, motor drives, audio amplifiers, and industrial control circuits that demand high surge current handling and fast switching frequencies.

Equivalent

Based on the information, the equivalent products of TIP121G are:

TIP125
TIP126 (note that it has the same Collector-Emitter Sustaining Voltage)
Other Onsemi Darlington NPN transistor products with similar specifications

Please note that equivalent products may have slight variations in characteristics or packaging, but they share similar functionality and application.