Datasheet

BT169_SER All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 5 — 30 September 2011 5 of 13
NXP Semiconductors
BT169 series
Thyristor logic level
5. Thermal characteristics
Table 4. Thermal characteristics
Symbol Parameter Conditions Min Typ Max Unit
R
th(j-lead)
thermal resistance from junction to
lead
--60K/W
R
th(j-a)
thermal resistance from junction to
ambient
printed-circuit board mounted;
lead length = 4 mm
-150-K/W
Fig 6. Transient thermal impedance as a function of pulse width.
001aab451
1
10
2
10
−1
10
Z
th(j-lead)
(K/W)
10
−2
t
p
(s)
10
−5
11010
−1
10
−2
10
−4
10
−3
t
p
t
p
T
P
t
T
δ =