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BF621 データシート(PDF) 5 Page - NXP Semiconductors

部品番号 BF621
部品情報  PNP high-voltage transistors
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メーカー  NXP [NXP Semiconductors]
ホームページ  http://www.nxp.com
Logo NXP - NXP Semiconductors

BF621 データシート(HTML) 5 Page - NXP Semiconductors

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2004 Dec 14
5
NXP Semiconductors
Product data sheet
PNP high-voltage transistors
BF621; BF623
THERMAL CHARACTERISTICS
Notes
1.
Device mounted on a printed-circuit board, single-sided copper, tin-plated and standard footprint.
2.
Device mounted on a printed-circuit board, single-sided copper, tin-plated and mounting pad for collector 1 cm2.
3.
Device mounted on a printed-circuit board, single-sided copper, tin-plated and mounting pad for collector 6 cm2.
SYMBOL
PARAMETER
CONDITIONS
VALUE
UNIT
Rth(j-a)
thermal resistance from junction to
ambient
in free air
note 1
250
K/W
note 2
156
K/W
note 3
113
K/W
Rth(j-s)
thermal resistance from junction to
soldering point
30
K/W
006aaa235
10−5
10
10−2
10−4
102
10−1
tp (s)
10−3
103
1
102
10
103
Zth
(K/W)
1
(6)
(7)
(8)
(9)
(10)
(1)
(5)
(4)
(3)
(2)
Fig.3 Transient thermal impedance as a function of pulse time; typical values.
(1)
δ = 1.
(2)
δ = 0.75.
(3)
δ = 0.5.
(4)
δ = 0.33.
(5)
δ = 0.2.
(6)
δ = 0.1.
(7)
δ = 0.05.
(8)
δ = 0.02.
(9)
δ = 0.01.
(10)
δ = 0.
Mounted on FR4 printed-circuit board; standard footprint.


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