Electronics - Operational Amplifiers - Discussion

I agree with @Arjun Jagtagataptap.

Please give the explanation of this question with a diagram.

In electronics, TO-5 is a designation for a standardized metal semiconductor package used for transistors and some integrated circuits. The TO element stands for "transistor outline" and refers to a series of technical drawings produced by JEDEC.

The typical TO-5 package has a base diameter of 8.9 mm (0.35 in), a cap diameter of 8.1 mm (0.32 in) , and a cap height of 6.3 mm (0.25 in).

There are multiple variants that differ from the regular 3-pin configuration. The H06C variant with 6 pins has its marker between pin 1 and 6, and H08A has 8 pins with the marker on the last one. The counting order is clockwise from the bottom perspective.

The TO-5 is a type of 'metal can' package (also known as 'metal header' package) for semiconductor devices. It is hermetically sealed to protect the device from environmental factors such as contaminants and moisture. The TO-5 is commonly used in housing transistors and integrated circuits with low lead counts such as operational amplifiers.

The TO-5 is made primarily of metal, with the microchip mounted on the die pad of its metal header and then sealed with a metal cap by high-current welding. The TO-5 looks like a TO-52 but it is bigger than the latter.

Most TO-5 packages come with three terminals, since the TO-5 is commonly used in three-terminal devices such as transistors. However, TO-5 packages with more terminals than this are also quite common.

Any body explain I didn't understand ya.

Any body explain about these?

Can anybody give me explanation ?