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PCB/PCBA knowledge
Ultra-full electronic components package type - for diode, transistor, MOS tube

Package refers to the case in which a semiconductor integrated circuit chip is installed. It plays a very important role in PCB and PCBA and semiconductor industry. In this article, we will introduce you an ultra-full electronic components package type, including diode, transistor, MOS package types.

Table of Contents

Why do you need package ?

Electric components package- why is it needed
Electric components package- why is it needed

In the PCB, PCBA and semiconductor industry,package is very necessary for IC and electronic components.

On the one hand, the package not only plays the role of installing, fixing, sealing, protecting the chip and enhancing the electric heating performance, but also connects the contacts on the chip to the pins of the package shell with wires, and these pins are passed through the printed circuit board. The wires on the chip are connected to other devices, so as to realize the connection between the internal chip and the external circuit.

On the other hand, chips packaged according to uniform specifications are also easier to install and transport. Electronic components have different packaging types. Although the shapes of different types of components are similar, the internal structures and uses are quite different. For example, the components packaged in TO220 may include diode, transistor. TO-3 package components may be transistor, integrated circuit and so on.

What are different types of electronic components packages ?

Common package types include DIP package, SMT package, BGA package and so on.

DIP (Dual In-line Package) Package

(1) DO (diode) series package:

DO (diode) refers to the package with pins. The appearance of the DO series is basically the same, but there is a difference in size.

DO-15: The diameter of the diode body is between 2.60mm-3.61mm, the length of the body is between 5.85-7.63mm, the diameter of the pins at both ends is between 0.71mm-0.84mm, and the length of the pins at both ends is 25.4mm

D0-15 types
D0-15 types
DO-15 package size
DO-15 package size
DO-27 / DO-201 package : The diameter of the diode body is between 4.79mm-5.30mm, the length of the body is between 7.24-9.53mm, the diameter of the pins at both ends is between 0.97mm-1.07mm, and the length of the pins at both ends is Both are 25.4mm.
DO-27 types
DO-27 types
DO-27 package size
DO-27 package size
DO-35 package size
DO-35 package size
DO-41 package : The diameter of the diode body is between 2.29mm-2.97mm, the length of the body is between 4.19-5.21mm, the diameter of the pins at both ends is between 0.71mm-0.84mm, and the length of the pins at both ends is 25.4mm.
DO-41 types
DO-41 types
DO-41 package size
DO-41 package size
R pacakge types
R pacakge types

(2) TO (Transistor Outline) package:

Different manufacturers have different package sizes.

About TO package code: TO-220AB is a specific JEDEC code, “AB” refers to the 3 straight pin codes that meet specific measurement specifications.
TO-220-3 is a general code, referring to parts with TO-220 body and 3 pins. In the same package series, there are also options such as 2-pin, 3-pin, 5-pin or 7-pin.

TO-200 package types
TO-200 package types
Typical TO-220 package size diagram , examples:
TO-220AB package size
TO-220AB package size
TO-220AC package size
TO-220AC package size

SMD package

(1) SOD ((Small Outline Diode) Some common SOD package sizes:
SOD package types
SOD package types

(2) SOT (Small Outline Transistor), often used to make small circuit boards, generally the number of pins is less than or equal to 5. There are two types according to the surface width, one with a width of 1.3mm and one with a width of 1.6mm

SOT23: Commonly used triode package type, there are three wing pins, namely collector, emitter and base, which are listed on both sides of the long side of the component.
SOT 23 package types
SOT 23 package types
SOT 323 package size (date from docin)
SOT 323 package size (date from docin)

SOT89 has three short pins, which are distributed on one side of the transistor, and the other side is a metal heat sink, which is connected to the base to increase heat dissipation. Transistors are often used in silicon power surface mount for high power applications.

SOT 89 package size( date from docin)
SOT 89 package size( date from docin)

SOT143 has four wing short pins that lead out from both sides. The big end of the pin is the collector. This package is common among high frequency transistors.

SOT252 is a high-power transistor, with three pins on one side, and the middle pin is short, which is the collector and connected to the larger pin on the other end.

(3) SOP (Small Outline package): The most common SMD IC package , the pins are drawn from the two longer sides of the pin, and the ends of the pins extend outward in a gull-wing-shaped surface mount package.

Common SOP package types: SOP-8, SOP-16, SOP-20, SOP-28 (the number represents the number of pins)

(4) SMA SMB SMC
Volume difference: SMA < SMB < SMC

SMA pacakge size
SMA pacakge size
SMB package size
SMB package size
SMC package size
SMC package size

Other examples:

DB-1 package size
DB-1 package size
KBPC package size
KBPC package size
MBM package size
MBM package size
MBS package size
MBS package size
MP package size
MP package size

Conclusion

The choice of package is mainly affected by the power. Generally, the choice of package is determined according to the current parameters. If several packages meet the power and heat generation requirements, then the package size should be reasonably selected according to the structure of the product.

FAQ

Package also known as integrated circuit packaging, which is the final production stage of semiconductor devices. It plays a very important role in PCB and PCBA and semiconductor industry.

1. The package plays the role of installing, fixing, sealing, protecting the chip and enhancing the electric heating performance.
2. Chips packaged according to uniform specifications are also easier to install and transport.

Common package types include in-line package, patch package, BGA package and so on.

Although the shapes of different types of components are similar, the internal structures and uses are quite different. So the package size should be reasonably selected according to the structure of the product .

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