WeEn Semiconductors
ACT108W-800E
AC Thyristor power switch
ACT108W-800E All information provided in this document is subject to legal disclaimers.
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WeEn Semiconductors Co., Ltd. 2017. All rights reserved
Product data sheet 3 March 2017 6 / 15
8. Thermal characteristics
Table 5. Thermal characteristics
Symbol Parameter Conditions Min Typ Max Unit
R
th(j-sp)
thermal resistance
from junction to solder
point
full cycle with heatsink compound;;
Fig. 7
- - 15 K/W
in free air; printed circuit board
mounted; minimum footprint; Fig. 8
- 156 - K/WR
th(j-a)
thermal resistance
from junction to
ambient free air
in free air; printed circuit board
mounted; pad area; Fig. 9
- 70 - K/W
003aac808
1
10
- 1
10
10
2
Z
th(j-sp)
(K/W)
10
- 2
t
p
(s)
10
- 5
1 1010
- 1
10
- 2
10
- 4
10
- 3
t
p
P
t
Fig. 7. Transient thermal impedance from junction to solder point as a function of pulse width