© 2016 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: 05/02/16

25 Amp High Temperature Alternistor Triacs

0

20

40

60

80

100

120

140

160

0.0

0.5

1.01.5

2.0

2.5

3.0

RMS On-State Current [I

CURRENT WAVEFORM: Sinusoidal

LOAD: Resistive or Inductive

CONDUCTION ANGLE: 180°

FREE AIR RATING

Figure 7: Maximum Allowable Case Temperature vs. Average On-State Current

10

100

1000

110100

1000

Surge Current Duration -- Full Cycles

Figure 8: Surge Peak On-State Current vs. Number of Cycles

SUPPLY FREQUENCY: 60 Hz Sinusoidal

LOAD: Resistive

RMS On-State Current: [I

Specified Case Temperature

Notes:

1. Gate control may be lost during and immediately

following surge current interval.

2. Overload may not be repeated until junction

temperature has returned to steady-state

rated value.