Transistor Case Packages

TO-205 Package

Transistor Can Packages TO-205 Case style, Metal Can


TO-205 Metal Package
TO-205 Metal Can, 3-Terminal

The TO-205 package is a 3-pin device in a metal can. This is a through-hole device, with pin 3 connected to the case.
As with any package, any number of uses will be found for a TO-205 metal can, as in a transistor, photodiode with phototransistor, or a Dual-Gate FET. The pin functions change depending on what circuit resides within the device. The table defines a pinout for a FET.

Terminal 1, Source
Terminal 2, Gate
Terminal 3, Drain





Additional TO-205 Semiconductor Functions;
TO-205 package, PNP Power Transistor; 2N5151, 2N5153, 2N5151L, 2N5153L
Radiation Hardened (Total Dose and Single Event Effects) N-Channel Field Effect Transistor 2N7395, 2N7396, 2N7397, 2N7398, 2N7410
Radiation Hardened (Total Dose and Single Event Effects) P-Channel Field Effect Transistor 2N7411
TO-205AD Transistor Types package, N-Channel FET; 2N6660 and 2N6661
TO-205AF Transistor Types
N-Channel Field Effect Transistor [FET], 2N6788, 2N6790, 2N6792, 2N6794, 2N6782, 2N6784, 2N6786, 2N6796, 2N6798, 2N6800, 2N6802, 2N6901, 2N6903
P-Channel Field Effect Transistor [FET] 2N6845, 2N6847, 2N6849, 2N6851, 2N6895, 2N6896, 2N6897, 2N6898, 2N7389, 2N7390
Fast-Recovery Schottky Barrier Diode, 1N6492 [pin 1 and 3]
N-Channel Radiation Hardened Field Effect Transistor, 2N7261 AND 2N7262, 2N7272, 2N7275, 2N7278, 2N7281
Radiation Hardened (Total Dose and Single Event Effects) P-Channel Field Effect Transistor, 2N7438, and 2N7439
Radiation Hardened (Total Dose and Single Event Effects) N-Channel Field Effect Transistor, 2N7463T2, 2N7464T2, 2N7515, 2N7516, 2N7517, 2N7497T2, 2N7498T2, and 2N7499T2

Design Hint:
The case needs to be isolated; Acting as a Drain or collector, if the can holds a FET or BJT.

Transistor Package
Header Type .200 Pin Circle






TO-205 Metal Can, 3-Terminal
TO-205 Metal Package

Related Technical Pages;
Types of Transistor cases.
Guideline to Derating Transistor.
Definition of Transistor Terms.
Manufacturers of FETs and BJTs


TO-205 Schematic
Internal Schematic of a TO-205 Metal Package FET
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