wrote:

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** The *mounting tab* is definitely metal, just coated in epoxy to
insulate it.


Huh, we buy either spendy teflon shoulder washers, or cheaper nylon.
(with 4-40 screw.)



** JRC make "full pack" versions of the popular 7815/7915, TO220 regs.

Types are JRC7815A and JRC7915A.

https://img.alicdn.com/imgextra/i3/T...0-item_pic.jpg


The pak is called a T220F

Lots of ICs are made like this, with a penalty in the thermal resistance spec.


...... Phil