TO-5

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Operational amplifier in a TO-5 package, viewed from above.

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.^[1]

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).^[2]

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. ^[3]

References

↑ TO-5 outlines at JEDEC, retrieved 14 December 2013
↑ TO-5 package at siliconfareast, retrieved 14 December 2013
↑ Metal Can Packages at ronja.twibright.com/datasheets/, retrieved 30 December 2013

External links

TO-5 images

v t e Semiconductor packages

Diode	DO-204 DO-213 / MELF DO-214 / SMA / SMB / SMC SOD

Transistor	SOT / TSOT TO-3 TO-5 TO-18 TO-66 TO-92 TO-126 TO-220 TO-263 / D2PAK

Single row	SIP / SIL

Dual row	DFN DIP / DIL Flat Pack SO / SOIC SOP / SSOP TSOP / TSSOP ZIP

Quad row	LCC PLCC QFN QFP QUIP / QUIL

Grid array	BGA eWLB LGA PGA

Wafer	COB COF COG CSP Flip Chip PoP QP UICC WL-CSP / WLP

Related topics	Electronic packaging List of electronics package dimensions Integrated circuit packaging List of integrated circuit packaging types

Note: It's relatively common to find packages that contain other components than their designated ones, such as voltage regulators in transistor packages, etc.

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