Insulated tab triacs

Sep 13, 2012 2 Replies
** Many triacs etc are sold in packages that have a metal tab internally insulated from the chip.

Eg the BTA41-600B :



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Anyone know for sure what the insulation material used is ?



Beryllium oxide ?


.... Phil


Interesting question, as it appears they've decided BeO isn't all that bad from an RoHS perspective.

Here's at least one counter-example:

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Alumina is used as the insulator.

Best regards, Spehro Pefhany

"it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com

Only the dust from BeO is a problem. In the early '70's I used a lot of it in my hybrid designs. However I had all the sawing done by a house that specialized in that task. ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

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