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Teccor’s Alternistor QUADRAC is a triac that includes a diac trigger
mounted inside the same package. This device, developed by Teccor,
saves the user the expense of buying a discrete diac and assembling in
conjunction with a gated triac. Also, the Alternistor triac eliminates the
need for a snubber network.
The Alternistor QUADRAC is a bidirectional AC switch and is gate
controlled for either polarity of main terminal voltage. Its primary purpose is
for AC switching and phase control applications such as speed controls,
temperature modulation controls, and lighting controls where noise
immunity is required.
Alternistor QUADRAC current capacities range from 6 to 15 Amperes with
voltage ranges from 400-600 Volts and are available in the TO-220AB
package as shown above.
The Thermotab package is electrically isolated to 2,500 V (RMS) from the
leads to mounting surface. A 4,000 V (RMS) rating is available on special
order. This means that no external isolation is required, thus eliminating
the need for separate insulators and insulator-mounting steps saving
dollars over “hot tab” devices.
All Teccor dice have glass-passivated junctions to ensure long term
reliability and parametric stability. Variations of devices in this data sheet
are available for custom design applications. Please consult the factory for
more information.
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Glass-passivated junctions
Electrically-isolated package
Internal trigger diac
High surge capability — up to 200 Amps
High voltage capability — 400 up to 600 Volts
THERMOTAB
TO-220AB (Isolated)
MT1
MT2
T
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Alternistor Quadrac
Internally Triggered Triacs
(6 - 15 Amps)
MT2
MT1
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