Philips Semiconductors

MAC97A8; MAC97A6

Logic level triac

Product specification

Rev. 01 — 29 March 2001

3 of 12

9397 750 07917

© Philips Electronics N.V. 2001. All rights reserved.

7.

Thermal characteristics

7.1 Transient thermal impedance

Table 4:

Thermal characteristics

Symbol

Parameter

Conditions

Value

Unit

thermal resistance from junction to lead

full cycle

60

K/W

half cycle

80

K/W

thermal resistance from junction to ambient

mounted on a printed circuit board;

lead length = 4 mm; Figure 1

150

K/W

.

Fig 1.

Transient thermal impedance from junction to ambient as a function of pulse

duration.

tp (s)

10

10-2

10-4

10-5

10-3

10-1

1

Zth(j-a)

(K/W)

103

102

10

1

tp

P

t

003aaa029