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MAC4DHM

Sensitive Gate Triacs Silicon Bidirectional Thyristors

ON Semiconductor 

MAC4DHM

Voltage Current Characteristic of Triacs

(Bidirectional Device)

Symbol

VDRM

IDRM

VRRM

IRRM

VTM

IH

Parameter

Peak Repetitive Forward Off−State Voltage

Peak Forward Blocking Current

Peak Repetitive Reverse Off−State Voltage

Peak Reverse Blocking Current

Maximum On−State Voltage

Holding Current

IRRM at VRRM

+ Current

on state

VTM

IH

Quadrant 1

MainTerminal 2 +

IH

Quadrant 3

MainTerminal 2 −

VTM

off state

+ Voltage

IDRM at VDRM

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.

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