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1
BCX41
1
2
3
NPN Silicon AF and Switching Transistor
• For general AF applications
• High breakdown voltage
• Low collector-emitter saturation voltage
• Complementary type: BCX42 (PNP)
• Pb-free (RoHS compliant) package
• Qualified according AEC Q101
Type Marking Pin Configuration Package
BCX41 EKs 1 = B 2 = E 3 = C SOT23
Maximum Ratings
Parameter Symbol Value Unit
Collector-emitter voltage VCEO 125 V
Collector-base voltage VCBO 125
Emitter-base voltage VEBO 5
Collector current IC800 mA
Peak collector current, tp ≤ 10 ms ICM 1 A
Base current IB100 mA
Peak base current IBM 200
Total power dissipation
TS ≤ 79 °C
Ptot 330 mW
Junction temperature Tj150 °C
Storage temperature Tst
g
-65 ... 150
Thermal Resistance
Parameter Symbol Value Unit
Junction - soldering point1) RthJS ≤ 215 K/W
1For calculation of RthJA please refer to Application Note AN077 (Thermal Resistance Calculation)
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BCX41
Electrical Characteristics at T
A
= 25°C, unless otherwise specified
Parameter Symbol Values Unit
min. typ. max.
DC Characteristics
Collector-emitter breakdown voltage
IC = 10 mA, IB = 0
V(BR)CEO 125 - - V
Collector-base breakdown voltage
IC = 100 µA, IE = 0
V(BR)CBO 125 - -
Emitter-base breakdown voltage
IE = 10 µA, IC = 0
V(BR)EBO 5 - -
Collector-base cutoff current
VCB = 100 V, IE = 0
VCB = 100 V, IE = 0 , TA = 150 °C
ICBO
-
-
-
-
0.1
20
µA
Collector-emitter cutoff current
VCE = 100 V, TA = 85 °C
VCE = 100 V, TA = 125 °C
ICEO
-
-
-
-
10
75
Emitter-base cutoff current
VEB = 4 V, IC = 0
IEBO - - 100 nA
DC current gain1)
IC = 100 µA, VCE = 1 V
IC = 100 mA, VCE = 1 V
IC = 200 mA, VCE = 1 V
hFE
25
63
40
-
-
-
-
-
-
-
Collector-emitter saturation voltage1)
IC = 300 mA, IB = 30 mA
VCEsat - - 0.9 V
Base emitter saturation voltage1)
IC = 300 mA, IB = 30 mA
VBEsat - - 1.4
AC Characteristics
Transition frequency
IC = 20 mA, VCE = 5 V, f = 20 MHz
fT- 100 - MHz
Collector-base capacitance
VCB = 10 V, f = 1 MHz
Ccb - 12 - pF
1Pulse test: t < 300µs; D < 2%
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BCX41
DC current gain hFE = ƒ(IC)
VCE = 1 V
10 10 10 10
BCX 41/BSS 64 EHP00427
h
mA
-1 0 2 3
FE
3
10
10
2
1
10
5
5
1
10
150
25
-50
555
C
Ι
˚C
˚C
˚C
Collector-emitter saturation voltage
IC = ƒ(VCEsat), hFE = 10
0 400 800
BCX 41/BSS 64 EHP00425
V
CE sat
mV
mA
103
0
10
10
101
10
102
10
5
5
5
10 200 600
150
25
-50
-1
C
Ι
˚C
˚C
˚C
Base-emitter saturation voltage
IC = ƒ(VBEsat), hFE = 10
10 03
BCX 41/BSS 64 EHP00424
VBE sat
10
mA
10
10
10
3
2
1
0
-1
5
5
5
V
12
150
25
-50
C
Ι
˚C
˚C
˚C
Collector current IC = ƒ(VBE)
VCE = 1V
10 0
BCX 41/BSS 64 EHP00421
VBE
10
mA
10
10
10
3
2
1
0
-1
5
5
5
V
23
150
25
-50
1
TA=
C
Ι
˚C
˚C
˚C
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BCX41
Collector cutoff current ICBO = ƒ(TA)
VCBO = 80 V
10 0 50 100 150
BCX 41/BSS 64 EHP00426
TA
5
10
10
nA
10
Ι
CB0
5
5
5
10
10
4
3
2
1
0
-1
max
typ
˚C
Transition frequency fT = ƒ(IC)
VCE = 5 V
10 10 10 10
BCX 41/BSS 64 EHP00423
f
mA
MHz
0123
5
T
3
10
10
2
1
10
5
5
5
C
Ι
Collector-base capacitance Ccb = ƒ(VCB)
Emitter-base capacitance Ceb = ƒ(VEB)
0 5 10 V20
VCB(VEB
0
10
20
30
40
50
60
70
80
pF
100
CCB(CEB)
CCB
CEB
Total power dissipation Ptot = ƒ(TS)
0 15 30 45 60 75 90 105 120 °C150
TS
0
50
100
150
200
250
300
mW
400
Ptot
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BCX41
Permissible Pulse Load
Ptotmax/PtotDC = ƒ(tp)
10
EHP00422BCX 41/BSS 64
-6
0
10
5
D
=
5
10
1
5
10
2
3
10
10
-5
10
-4
10
-3
10
-2
10
0
s
0
0.005
0.01
0.02
0.05
0.1
0.2
0.5
tp
=
DT
tp
T
totmax
tot
P
DC
P
p
t
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BCX41
Package SOT23
Package Outline
Foot Print
Marking Layout (Example)
Standard Packing
Reel ø180 mm = 3.000 Pieces/Reel
Reel ø330 mm = 10.000 Pieces/Reel
EH
s
BCW66
Type code
Pin 1
0.8
0.9 0.91.3
0.8 1.2
0.25
M
BC
1.9
-0.05
+0.1
0.4
±0.1
2.9
0.95
C
B
0...8˚
0.2 A
0.1 MAX.
10˚ MAX.
0.08...0.15
1.3
±0.1
10˚ MAX.
M
2.4
±0.15
±0.1
1
A
0.15 MIN.
1)
1) Lead width can be 0.6 max. in dambar area
12
3
3.15
4
2.65
2.13
0.9
8
0.2
1.15
Pin 1
Manufacturer
2005, June
Date code (YM)
2011-10-04
7
BCX41
Edition 2009-11-16
Published by
Infineon Technologies AG
81726 Munich, Germany
2009 Infineon Technologies AG
All Rights Reserved.
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of conditions or characteristics. With respect to any examples or hints given herein,
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please contact the nearest Infineon Technologies Office (<www.infineon.com>).
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