Triac (Bidirectional Triode Thyristor)

TMA12x

Series

2

Absolute Maximum Ratings

Characteristic

Symbol

Notes

Rating

Units

Peak Repetitive Off-State Voltage

TMA124x

∞

400

V

TMA126x

600

V

Peak Non-Repetitive Off-State Voltage

TMA124x

∞

500

V

TMA126x

700

V

Isolation Voltage

AC RMS applied for 1 minute between lead and case

1800

V

RMS On-State Current

50/60 Hz full cycle sine wave,

total Conduction angle (

α+) + (α–) = 360°,

12

A

Surge On-State Current

f = 60 Hz

Full cycle sine wave, peak value, non-repetitive,

126

A

f = 50 Hz

120

A

72

Peak Gate Current

f

≥ 50 Hz, duty cycle ≤ 10%

2

A

Peak Gate Power Dissipation

f

≥ 50 Hz, duty cycle ≤ 10%

5

W

Average Gate Power Dissipation

0.5

W

Junction Temperature

–40 to 125

ºC

Storage Temperature

–40 to 125

ºC

Characteristic

Symbol

Test Conditions

Value

Units

Package Thermal Resistance

(Junction to Case)

For AC

3.5

ºC/W

T1

T2

G

Terminal List Table

Number

Name

Function

1

T1

Main terminal, gate referenced

2

T2

Main terminal connect to signal side

3

G

Gate control

Pin-out Diagram

All performance characteristics given are typical values for circuit or

system baseline design only and are at the nominal operating voltage and

12 3

Selection Guide

Part Number

(V)

UL-Recognized

Component

Package

Packing

TMA124(I)

400

Yes

3-pin fully molded SIP with

heatsink mount

50 pieces per tube

TMA124S-L

400

–

TMA126(I)

600

Yes

TMA126S-L

600

–

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com