Nexperia
PRMD13
50 V, 100 mA NPN/PNP Resistor-Equipped double Transistors (RET)
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Nexperia B.V. 2017. All rights reserved
Product data sheet 25 July 2017 4 / 16
9. Thermal characteristics
Table 6. Thermal characteristics
Symbol Parameter Conditions Min Typ Max Unit
Per transistor
R
th(j-a)
thermal resistance
from junction to
ambient
in free air [1] - - 385 K/W
Per device
R
th(j-a)
thermal resistance
from junction to
ambient
in free air [1] - - 261 K/W
[1] Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint.
aaa-024488
10
-5
1010
-2
10
-4
10
2
10
-1
t
p
(s)
10
-3
10
3
1
10
2
10
10
3
Z
th(j-a)
(K/W)
1
duty cycle = 1
0.01
0
0.02
0.05
0.1
0.2
0.33
0.5
0.75
FR4 PCB, standard footprint
Fig. 2. Per transistor: Transient thermal impedance from junction to ambient as a function of pulse duration;
typical values