TO-5 Component Package

Overview

Name TO-5 (Transistor Outline 5)
Synonyms
  • H-03B (TO-5-3, Analog Devices)
  • H06C (TO-5-6, National Semiconductor)
  • H08A (TO-5-8, 0.230″ diameter P.C. (pin circumference, National Semiconductor)
  • H08C (TO-5-8, 0.200″ diameter P.C., National Semiconductor)
  • H10C (TO-5-10, 0.200″ diameter P.C., National Semiconductor)
Variants

The number of pins (leads) can vary, but the body shape stays the same. The body may have a transparent window (e.g. for phototransistors) or other feature on the top surface.

The diameter of the pin circumference can also vary. Diameters of 0.200″ and 0.230″ are common.

Relevant Standards  
Similar To
  • TO-18
  • TO-39
  • TO-46
  • TO-205 (this almost supersedes the TO-5 package)
Mounting TH
Pin Count  3, 4, 6, 8, 10
Pitch  
Solderability Very easy to solder by hand.
Thermal Resistance  
Dimensions  
3D Models  
Common Uses
  • Temperature sensors
  • Op-amps

Comments

The TO-5 is an older-style through-hole metal can package. The traditional TO-92 package has 3 pins.

A photo of the TO-5 6-lead component package.
A photo of the TO-5 6-lead component package.

The original JEDEC TO-5 specification is shown below:

The original JEDEC TO-5 (TO-5-3) component package specification drawing. Image from http://www.jedec.org/.
The original JEDEC TO-5 (TO-5-3) component package specification drawing. Image from http://www.jedec.org/.

TO-5-8

Dimensions for the 8 leaded TO-5 (TO-5-8) component package.
Dimensions for the 8 leaded TO-5 (TO-5-8) component package.

Pin Numbering

The pin numbering is clockwise while looking at the package from the bottom.

Pin Circumference

The diameter of the pin circumference can vary between TO-5 packages. For example, there is a 8-pin TO-5 package with a pin diameter of 0.200″, and another with a diameter of 0.230″.

Sockets

Sockets exist which fit TO-92 packages.

External Resources

http://ronja.twibright.com/datasheets/metal_cans.pdf has some great information on the TO-5 component package as well as similar style metal can packages.

 

Posted: October 27th, 2015 at 1:46 pm
Last Updated on: October 27th, 2015 at 4:52 pm