How To Guide 4Windows

Transistor Outline (T.O) Packaging

Package Image Image Internal Diagram
TO-3

Entirely made of metal with microchip mounted on its metal can base and then covered with a metal cap. TO-3 is designed to accommodate large heat sinks to dissipate heat and increase power handling capability.

transistor package - TO-3 transistor package - TO-3 transistor package - TO-3 diagram
TO-5 transistor package - TO-5
TO-8 transistor package - TO-8 transistor package - TO-3 internal diagram
TO-18

The tab is located 45° from pin 1. The lead diameter is nominally 0.45 mm, the diameter of the cap is 4.5-4.95mm (0.178-0.195 inches) and the overall width (not including the tab) is 5.4 mm. Ref. wiki

transistor package - TO-18 transistor package - TO-3 transistor package - TO-3 internal diagram
TO-36 transistor package - TO-36
TO-39 transistor package - TO-39
TO-46 transistor package - TO-46
TO-52 transistor package - TO-52
TO-66 transistor package - TO-66
TO-72 transistor package - TO-72
TO-92 transistor package - TO-92
TO-126 transistor package - TO-126
TO-202 transistor package - TO-202
TO-218 transistor package - TO-218
TO-220 transistor package - TO-220
TO-226 transistor package - TO-226
TO-254 transistor package - TO-254
TO-257 transistor package - TO-257
TO-258 transistor package - TO-258
TO-259 transistor package - TO-259
TO-264 transistor package - TO-264
TO-267 transistor package - TO-264

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