pmbt3946vpn NXP Semiconductors, pmbt3946vpn Datasheet - Page 3

• Manufacturer Part Number: pmbt3946vpn
• Description: 40 V, 200 Ma Npn/pnp Switching Transistor
• Manufacturer: NXP Semiconductors

NXP Semiconductors
6. Thermal characteristics
PMBT3946VPN_1
Product data sheet
Table 6.
In accordance with the Absolute Maximum Rating System (IEC 60134).
[1]
[2]
Table 7.
[1]
[2]
Symbol
Per device
P
T
T
T
Symbol
Per transistor
R
R
Per device
R
Fig 1.
j
amb
stg
tot
th(j-a)
th(j-sp)
th(j-a)
Reflow soldering is the only recommended soldering method.
Device mounted on an FR4 Printed-Circuit Board (PCB), single-sided copper, tin-plated and standard
footprint.
Reflow soldering is the only recommended soldering method.
Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint.
FR4 PCB, standard footprint
Per device: Power derating curves SOT666
Parameter
total power dissipation
junction temperature
ambient temperature
storage temperature
Limiting values
Thermal characteristics
Parameter
thermal resistance from
junction to ambient
thermal resistance from
junction to solder point
thermal resistance from
junction to ambient
(mW)
P
Rev. 01 — 31 August 2009
tot
400
300
200
100
0
…continued
75
25
25
Conditions
in free air
in free air
Conditions
T
40 V, 200 mA NPN/PNP switching transistor
amb
75
25 C
125
T
006aab604
amb
PMBT3946VPN
[1][2]
[1][2]
[1][2]
( C)
175
Min
-
-
Min
-
-
-
55
65
Typ
-
-
-
© NXP B.V. 2009. All rights reserved.
Max
360
150
+150
+150
Max
521
100
347
Unit
mW
C
C
C
Unit
K/W
K/W
K/W
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