Datasheet

NXP Semiconductors
PXT2907A
60 V, 600 mA, PNP switching transistor
PXT2907A All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved
Product data sheet 10 October 2014 4 / 15
9. Thermal characteristics
Table 6. Thermal characteristics
Symbol Parameter Conditions Min Typ Max Unit
[1] - - 250 K/W
[2] - - 156 K/W
R
th(j-a)
thermal resistance
from junction to
ambient
in free air
[3] - - 113 K/W
R
th(j-sp)
thermal resistance
from junction to solder
point
- - 30 K/W
[1] Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint.
[2]
Device mounted on an FR4 PCB, single-sided copper, tin-plated and mounting pad for collector 1 cm
2
.
[3]
Device mounted on an FR4 PCB, single-sided copper, tin-plated and mounting pad for collector 6 cm
2
.
006aaa235
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
(K/W)
1
duty cycle = 1
0.75
0.5
0.33
0.2
0.1
0.05
0.02
0.01
0
Mounted on FR4 PCB; standard footprint.
Fig. 2. Transient thermal impedance as a function of pulse time; typical values