BCX41
Document number: DS33007 Rev. 4 - 2
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June 2018
© Diodes Incorporated
BCX41
125V NPN MEDIUM POWER TRANSISTOR IN SOT23
Features
BVCEO > 125V
IC = 800mA High Continuous Collector Current
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Mechanical Data
Case: SOT23
Case Material: Molded Plastic, “Green” Molding Compound.
UL Flammability Classification Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020
Terminals: Finish—Matte Tin Plated Leads, Solderable per
MIL-STD-202, Method 208
Weight 0.008 grams (Approximate)
Ordering Information (Note 5)
Part Number
Compliance
Marking
Reel Size (inches)
Tape Width (mm)
Quantity Per Reel
BCX41TA
AEC-Q101
EK
7
8
3000
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and
Lead-free.
3.Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
4. For packaging details, see https://www.diodes.com/design/support/packaging/diodes-packaging/.
Marking Information
Date Code Key
Year
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
Code
F
G
H
I
J
K
L
M
N
O
P
Q
Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Code
1
2
3
4
5
6
7
8
9
O
N
D
Top View
Pin-Out
Top View
Device Symbol
SOT23
XX
SOT23
C
E
B
C
E
B
EK
YM
EK = Product Type Marking Code
YM = Date Code Marking
Y or Y = Year (ex: E = 2017)
M or M = Month (ex: 9 = September)
BCX41
Document number: DS33007 Rev. 4 - 2
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© Diodes Incorporated
BCX41
Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.)
Characteristic
Symbol
Value
Unit
Collector-Base Voltage
VCBO
125
V
Collector-Emitter Voltage
VCEO
125
V
Emitter-Base Voltage
VEBO
5
V
Continuous Collector Current
IC
800
mA
Peak Pulse Current
ICM
1
A
Base Current
IB
100
mA
Thermal Characteristics (@TA = +25°C, unless otherwise specified.)
Characteristic
Symbol
Value
Unit
Power Dissipation
(Note 5)
PD
310
mW
(Note 6)
350
Thermal Resistance, Junction to Ambient
(Note 5)
RϴJA
403
C/W
(Note 6)
357
Thermal Resistance, Junction to Leads
(Note 7)
RϴJL
350
C/W
Operating and Storage Temperature Range
TJ,TSTG
-55 to +150
C
ESD Ratings (Note 8)
Characteristic
Symbol
Value
Unit
JEDEC Class
Electrostatic Discharge—Human Body Model
ESD HBM
4000
V
3A
Electrostatic Discharge—Machine Model
ESD MM
400
V
C
Notes: 5. For the device mounted on minimum recommended pad layout FR-4 PCB with high coverage of single sided 1oz copper in still air condition; the device is
measured when operating in a steady-state condition.
6. Same as note (6), except the device is mounted on 15mm × 15mm FR-4 PCB.
7. Thermal resistance from junction to solder-point (at the end of the leads).
8. Refer to JEDEC specification JESD22-A114 and JESD22-A115.
BCX41
Document number: DS33007 Rev. 4 - 2
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BCX41
Thermal Characteristics and Derating Information (@TA = +25°C, unless otherwise specified.)
025 50 75 100 125 150
0.0
0.1
0.2
0.3
0.4
Derating Curve
Temperature (oC)
Max Power Dissipation (W)
100μ 1m 10m 100m 110 100 1k
0
50
100
150
200
250
300
350
400
Transient Thermal Impedance
D=0.5
D=0.2 D=0.1 Single Pulse
D=0.05
Thermal Resistance (oC/W)
Pulse Width (s)
10m 100m 110 100 1k
0.1
1
10
Single Pulse. TA=25oC
Pulse Power Dissipation
Pulse Width (s)
Max Power Dissipation (W)
µ
BCX41
Document number: DS33007 Rev. 4 - 2
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BCX41
Electrical Characteristics (@TA = +25°C, unless otherwise specified.)
Characteristic
Symbol
Min
Typ
Max
Unit
Test Condition
OFF CHARACTERISTICS
Collector-Emitter Breakdown Voltage
BVCES
125
—
—
V
IC = 100µA
Collector-Emitter Breakdown Voltage (Note 9)
BVCEO
125
—
—
V
ICEO = 10mA
Emitter-Base Breakdown Voltage
BVEBO
7
—
—
V
IEBO = 10µA
Collector-Base Cut-Off Current
ICES
—
—
—
—
100
10
nA
µA
VCB = 100V
VCB = 100V, TA = +150°C
Collector Cut-Off Current
ICEX
—
—
—
—
10
75
µA
µA
VCE = 100V, VBE = 0.2V,
TA = +85°C
VCE = 100V, VBE = 0.2V,
TA = +125°C
Emitter-base Cut-off Current
IEBO
—
—
100
nA
VEB = 5.6V
ON CHARACTERISTICS (Note 10)
Static Forward Current Transfer Ratio
hFE
25
63
40
—
—
—
IC = 100µA, VCE = 1V
IC = 100mA, VCE = 1V
IC = 200mA, VCE = 1V
Collector-Emitter Saturation Voltage
VCE(SAT)
—
—
0.9
V
IC = 300mA, IB = 30mA
Base-Emitter Saturation Voltage
VBE(SAT)
—
—
1.4
V
IC = 300mA, IB = 30mA
SMALL SIGNAL CHARACTERISTICS (Note 9)
Transition Frequency
fT
—
100
—
MHz
IC = 10mA, VCE = 5V,
f = 20MHz
Output Capacitance
COBO
—
12
—
pF
VCB = 10V, f = 1MHz
Note: 9. Measured under pulsed conditions. Pulse width ≤ 300µs. Duty cycle ≤ 2%.
BCX41
Document number: DS33007 Rev. 4 - 2
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BCX41
Typical Electrical Characteristics (@TA = +25°C, unless otherwise specified.)
10 100 1000
0.0
0.2
0.4
0.6
0500 1000 1500
1E-3
0.01
0.1
1
110 100 1000
1
10
100
1000
0200 400 600 800 1000
0.2
0.4
0.6
0.8
1.0
1.2
0200 400 600 800 1000
0.4
0.5
0.6
0.7
0.8
0.9
1.0
VCE(SAT) v IC
TA=25oC
IC/IB=50
IC/IB=10
VCE(SAT) (V)
IC Collector Current (mA)
VBE(SAT) v IC
IC/IB=50 100oC
25oC
-55oC
VCE(SAT) (V)
IC Collector Current (mA)
hFE v IC
VCE=10V
-55oC
25oC
100oC
IC Collector Current (mA)
25oC
VCE(SAT) v IC
IC/IB=10
100oC
-55oC
VBE(SAT) (V)
IC Collector Current (mA)
VBE(ON) v IC
VCE=10V
100oC
25oC
-55oC
VBE(ON) (V)
IC Collector Current (mA)
hFEGain
BCX41
Document number: DS33007 Rev. 4 - 2
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June 2018
© Diodes Incorporated
BCX41
Package Outline Dimensions
Please see http://www.diodes.com/package-outlines.html for the latest version.
SOT23
J
K1 K
L1
GAUGE PLANE
0.25
H
L
M
All 7°
A
CB
D
G
F
a
SOT23
Dim
Min
Max
Typ
A
0.37
0.51
0.40
B
1.20
1.40
1.30
C
2.30
2.50
2.40
D
0.89
1.03
0.915
F
0.45
0.60
0.535
G
1.78
2.05
1.83
H
2.80
3.00
2.90
J
0.013
0.10
0.05
K
0.890
1.00
0.975
K1
0.903
1.10
1.025
L
0.45
0.61
0.55
L1
0.25
0.55
0.40
M
0.085
0.150
0.110
a
0°
8°
—
All Dimensions in mm
Suggested Pad Layout
Please see http://www.diodes.com/package-outlines.html for the latest version.
SOT23
X
Y
Y1 C
X1
Dimensions
Value (in mm)
C
2.0
X
0.8
X1
1.35
Y
0.9
Y1
2.9
BCX41
Document number: DS33007 Rev. 4 - 2
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June 2018
© Diodes Incorporated
BCX41
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume
all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated
website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.
This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2018, Diodes Incorporated
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