PBSS4420D Philips Semiconductors, PBSS4420D Datasheet - Page 4

• Manufacturer Part Number: PBSS4420D
• Description: NPN low VCEsat (BISS) transistor
• Manufacturer: Philips Semiconductors

Philips Semiconductors
6. Thermal characteristics
9397 750 14028
Product data sheet
Fig 2. Transient thermal impedance from junction to ambient as a function of pulse time; typical values
(10)
Z
(K/W)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
th(j-a)
10
10
10
10
1
3
2
1
10
FR4 PCB; standard footprint
= 1
= 0.75
= 0.5
= 0.33
= 0.2
= 0.1
= 0.05
= 0.02
= 0.01
= 0
5
10
(10)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
4
Table 6:
[1]
[2]
[3]
[4]
[5]
Symbol
R
R
th(j-a)
th(j-sp)
Device mounted on a ceramic PCB, Al
Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint.
Device mounted on an FR4 PCB, single-sided copper, tin-plated, mounting pad for collector 1 cm
Device mounted on an FR4 PCB, single-sided copper, tin-plated, mounting pad for collector 6 cm
Operated under pulsed conditions: Duty cycle
10
Thermal characteristics
3
Parameter
thermal resistance from
junction to ambient
thermal resistance from
junction to solder point
10
2
Rev. 01 — 21 April 2005
10
1
2
O
3
, standard footprint.
Conditions
in free air
10 % and pulse width t
1
20 V, 4 A NPN low V
[2] [5]
10
[2]
[3]
[4]
[1]
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Min
-
-
-
-
-
-
p
PBSS4420D
10 ms.
CEsat
10
Typ
-
-
-
-
-
-
2
(BISS) transistor
t
p
006aaa271
(s)
Max
350
208
160
113
50
45
10
3
2
2
Unit
K/W
K/W
K/W
K/W
K/W
K/W
.
.
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