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MAC12SNG
(Rev.:2014)

Sensitive Gate Triacs Silicon Bidirectional Thyristors

ON Semiconductor 

MAC12SM, MAC12SN

Quadrant Definitions for a Triac

MT2 POSITIVE

(Positive Half Cycle)

+

(+) MT2

(+) MT2

Quadrant II

IGT −

(−) IGT

GATE

MT1

REF

(−) MT2

(+) IGT

GATE

MT1

REF

(−) MT2

Quadrant I

+ IGT

Quadrant III

(−) IGT

GATE

MT1

REF

(+) IGT

GATE

MT1

REF

Quadrant IV

−

MT2 NEGATIVE

(Negative Half Cycle)

All polarities are referenced to MT1.

With in−phase signals (using standard AC lines) quadrants I and III are used.

100

10

Q2

Q3

Q1

1

0.1

−40 −25 −10 5 20 35 50 65 80

TJ, JUNCTION TEMPERATURE (°C)

95 110

Figure 1. Typical Gate Trigger Current

versus Junction Temperature

0.90 Q1

0.85

0.80 Q3

0.75

Q2

0.70

0.65

0.60

0.55

0.50

0.45

0.40

−40 −25 −10 5 20 35 50 65 80

TJ, JUNCTION TEMPERATURE (°C)

95 110

Figure 2. Typical Gate Trigger Voltage

versus Junction Temperature

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