pmbt3946ypn NXP Semiconductors, pmbt3946ypn Datasheet - Page 4

• Manufacturer Part Number: pmbt3946ypn
• Description: 40 V, 200 Ma Npn/pnp General-purpose Double Transistor
• Manufacturer: NXP Semiconductors

NXP Semiconductors
6. Thermal characteristics
PMBT3946YPN_1
Product data sheet
Fig 2.
Z
(K/W)
th(j-a)
10
10
10
1
3
2
10
FR4 PCB, standard footprint
Per transistor: Transient thermal impedance from junction to ambient as a function of pulse duration;
typical values
5
= 1
0.75
0.1
0.5
0.33
0.2
0.05
0.02
0.01
0
10
4
Table 7.
[1]
Symbol
Per transistor
R
R
Per device
R
th(j-a)
th(j-sp)
th(j-a)
Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint.
10
Thermal characteristics
3
Parameter
thermal resistance from
junction to ambient
thermal resistance from
junction to solder point
thermal resistance from
junction to ambient
10
2
Rev. 01 — 12 May 2009
40 V, 200 mA NPN/PNP general-purpose double transistor
10
1
Conditions
in free air
in free air
1
[1]
[1]
10
PMBT3946YPN
Min
-
-
-
Typ
-
-
-
10
2
© NXP B.V. 2009. All rights reserved.
t
p
006aab114
(s)
Max
543
290
357
10
3
Unit
K/W
K/W
K/W
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