Features
Ideally Suited for Automatic Insertion
Complementary NPN Types: BC846 – BC848
For switching and AF Amplifier Applications
Totally Lead-Free & Fully RoHS compliant (Notes 1 & 2)
Halogen and Antimony Free. "Green" Device (Note 3)
Qualified to AEC-Q101 Standards for High Reliability
PPAP capable (Note 4)
SOT23
B
Top View
Mechanical Data
Case: SOT23
Case Material: Molded Plastic, “Green” Molding Compound
Moisture Sensitivity: Level 1 per J-STD-020
Terminals: Finish – Matte Tin Plated Leads, Solderable per
Weight: 0.008 grams (Approximate)
C
E
Device Symbol
BC856A-BC858C
PNP SMALL SIGNAL TRANSISTOR IN SOT23
UL Flammability Classification Rating 94V-0
MIL-STD-202, Method 208
Top View
Pin-Out
Ordering Information
Product Compliance Marking
BC856A-7-F AEC-Q101 K3A 7 3,000 BC857B-7-F AEC-Q101 K3B 7 3,000
BC856AQ-7-F Automotive K3A 7 3,000 BC857BQ-7-F Automotive K3B 7 3,000
BC856B-7-F AEC-Q101 K3B 7 3,000 BC857B-13-F AEC-Q101 K3B 13 10,000
BC856BQ-7-F Automotive K3B 7 3,000 BC857C-7-F AEC-Q101 K3G 7 3,000
BC856B-13-F AEC-Q101 K3B 13 10,000 BC857C-13-F AEC-Q101 K3G 13 10,000
BC856BQ-13-F Automotive K3B 13 10,000 BC858A-7-F AEC-Q101 K3A 7 3,000
BC857A-7-F AEC-Q101 K3A 7 3,000 BC858B-7-F AEC-Q101 K3B 7 3,000
BC858C-7-F AEC-Q101 K3G 7 3,000
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html 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. Automotive products are AEC-Q101 qualified and are PPAP capable. Automotive, AEC-Q101 and standard products are electrically and thermally
the same, except where specified. For more information, please refer to http://www.diodes.com/quality/product_compliance_definitions/.
5. Tape width is 8mm. For packaging details, go to our website at http://www.diodes.com/products/packages.html
(Notes 4 & 5)
Reel Size
(inches)
Quantity
per Reel
Product Compliance Marking
Reel Size
(inches)
Quantity
per Reel
Marking Information
Date Code Key
Year 2010 2011 2012 2013 2014 2015 2016 2017
Code X Y Z A B C D E
Month Jan Feb Mar Apr May Jun Jul
Code 1 2 3 4 5 6 7
xxx
YM
xxx = Product Type Marking Code
(Please see Ordering Information)
YM = Date Code Marking
Y or Y = Year (ex: A = 2013)
M or M = Month (ex: 9 = September)
Aug Sep Oct Nov Dec
8 9 O N D
BC856A – BC858C
Document Number: DS11207 Rev. 23 - 2
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December 2013
© Diodes Incorporated
Absolute Maximum Ratings (@T
= +25°C, unless otherwise specified.)
A
Characteristic Symbol Value Unit
BC856
Collector-Base Voltage
BC857 -50
BC858 -30
BC856
Collector-Emitter Voltage
BC857 -45
BC858 -30
Emitter-Base Voltage
Continuous Collector Current
Peak Collector Current
Peak Emitter Current
Peak Base Current
Thermal Characteristics (@T
= +25°C, unless otherwise specified.)
A
Characteristic Symbol Value Unit
Power Dissipation
Thermal Resistance, Junction to Ambient
(Note 6)
(Note 7) 350
(Note 6)
(Note 7) 357
Thermal Resistance, Junction to Leads (Note 8)
Operating and Storage Temperature Range
ESD Ratings (Note 9)
V
V
V
I
I
I
R
R
T
J,TSTG
CBO
CEO
EBO
I
C
CM
EM
BM
P
D
θJA
θJL
BC856A-BC858C
-80
-65
-5.0 V
-100 mA
-200 mA
-200 mA
-200 mA
310
403
350 °C/W
-65 to +150 °C
V
V
mW
°C/W
Electrostatic Discharge - Human Body Model ESD HBM 4,000 V 3A
Characteristic Symbol Value Unit JEDEC Class
Electrostatic Discharge - Machine Model ESD MM 400 V C
Notes: 6. For a device mounted on minimum recommended pad layout 1oz copper that is on a single-sided FR4 PCB; device is measured under still air
conditions whilst operating in a steady-state.
7. Same as note (6), except the device is mounted on 15 mm x 15mm 1oz copper.
8. Thermal resistance from junction to solder-point (at the end of the leads).
9. Refer to JEDEC specification JESD22-A114 and JESD22-A115.
BC856A – BC858C
Document Number: DS11207 Rev. 23 - 2
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© Diodes Incorporated
Thermal Characteristics and Derating Information
0.4
0.3
0.2
0.1
0.0
0 25 50 75 100 125 150
Max Power Dissipation (W)
Temperature (°C)
Thermal Resistance (°C/W)
Derating Curve
10
Single Pulse. T
amb
=25°C
BC856A-BC858C
400
350
300
250
D=0.5
200
150
D=0.2
100
50
0
100µ 1m 10m 100m 1 10 100 1k
D=0.1
Single Pulse
D=0.05
Pulse Width (s)
Transient Thermal Impedance
1
0.1
10m 100m 1 10 100 1k
Max Power Dissipation (W)
Pulse Width (s)
Pulse Power Dissipation
BC856A – BC858C
Document Number: DS11207 Rev. 23 - 2
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December 2013
© Diodes Incorporated
4
4
4
Electrical Characteristics (@T
= +25°C, unless otherwise specified.)
A
BC856A-BC858C
Characteristic Symbol Min Typ Max Unit Test Condition
Collector-Base Breakdown Voltage
BC856
BC857 -50
BV
CBO
-80
— — V
BC858 -30
Collector-Emitter Breakdown Voltage
(Note 10)
Emitter-Base Breakdown Voltage
Collector Cutoff Current
Collector Emitter Cutoff Current
BC856
BC857 -45
BV
CEO
BC858 -30
BV
EBO
I
CBO
BC856
BC857 -15
I
CES
-65
-5 — — V
— —
— —
— — V
-15 nA
-4 µA
-15
nA
BC858 -15
Emitter-Base Cutoff Current
Small Signal Current Gain
(Note 10)
Input Impedance (Note 10)
I
EBO
BC856A / BC857A / BC858A
BC856B / BC857B / BC858B 330
h
fe
BC857C / BC858C 600
BC856A / BC857A / BC858A
BC856B / BC857B / BC858B 4.5
h
ie
— — -100 nA
200
—
— —
2.7
—
— kΩ
BC857C / BC858C 8.7
Output Admittance
(Note 10)
Reverse Voltage Transfer
Ratio (Note 10)
DC Current Gain (Note 10)
BC856A / BC857A / BC858A
BC856B / BC857B / BC858B 30
h
oe
—
BC857C / BC858C 60
BC856A / BC857A / BC858A
h
re
—
BC857C / BC858C 3x10
BC856A / BC857A / BC858A
BC856B / BC857B / BC858B 220 290 475
h
FE
125 180 250
18
1.5x10
— µS
-
-
— — BC856B / BC857B / BC858B 2x10
-
—
BC857C / BC858C 420 520 800
Collector-Emitter Saturation Voltage (Note 10)
Base-Emitter Turn-On Voltage (Note 10)
Base-Emitter Saturation Voltage (Note 10)
Output Capacitance
Transition Frequency
V
CE(sat)
V
BE(on)
V
BE(sat)
C
obo
f
—
-600 -650 -750
— — -820
—
— 3 — pF
100 200 — MHz
T
-75 -300
-250 -650
-700
-850
— mV
mV
mV
Noise Figure NF — 2 10 dB
Notes: 10. Measured under pulsed conditions. Pulse width ≤ 300µs. Duty cycle ≤ 2%
IC = -10µA
I
= -10mA
C
I
= -1µA
E
= -30V
V
CB
V
= -30V, TJ = +150°C
CB
= -80V
V
CE
V
= -50V
CE
V
= -30V
CE
V
= -5V
EB
= -2.0mA, VCE = -5V
I
C
f = 1.0kHz
IC = -2.0mA, V
= - 10mA, IB = -0.5mA
I
C
I
= - 100mA, IB = -5.0mA
C
I
= -2mA, V
C
I
= -10mA, V
C
= -10mA, I
I
C
I
= -100mA, I
C
= -5V
CE
= -5V
CE
= -5V
CE
= -0.5mA
B
= -5mA
B
VCB = -10V, f = 1.0MHz
= -5V, IC = -10mA,
V
CE
f = 100MHz
V
= -5V, IC = -200µA
CE
= 2kΩ, f = 1kHz
R
S
∆f = 200Hz
BC856A – BC858C
Document Number: DS11207 Rev. 23 - 2
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© Diodes Incorporated
C CUR
REN
T GAIN
C
O
CTO
R
T
TER
G
T
H PRODUCT
H
Typical Electrical Characteristics (@T
1,000
100
10
FE
h, D
1
1
Figure 1 Typical DC Current Gain vs. Collector Current
1,000
z)
T = 150°C
A
T = 25°C
A
T = -50°C
A
10 100
I , COLLECTOR CURRENT (mA)
C
V = 5V
CE
V = 5V
CE
= +25°C, unless otherwise specified.)
A
0.5
0.4
-EMI
0.3
LLE
0.2
SATURATION VOLTAGE (V)
CE(SAT)
V,
0.1
0
1,000
0.1 10 100
Figure 2 Typical Collector-Emitter Saturation Voltage
BC856A-BC858C
I
C
= 10
I
B
T = 25°C
T = 150°C
A
1
I , COLLECTOR CURRENT (mA)
C
vs. Collector Current
A
T = -50°C
A
1,000
(M
100
AIN-BANDWID
t
f,
10
1
Figure 3 Gain-Bandwidth Product vs Collector Current
I , COLLECTOR CURRENT (mA)
C
10
100
BC856A – BC858C
Document Number: DS11207 Rev. 23 - 2
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© Diodes Incorporated
BC856A-BC858C
Package Outline Dimensions
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.
K
K
1
C
B
H
A
D
All 7
°
Dim Min Max Typ
J
M
L
a
L
1
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
SOT23
8°
All Dimensions in mm
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
C
6 of 7
Dimensions Value (in mm)
Z 2.9
X 0.8
Y 0.9
C 2.0
E 1.35
December 2013
© Diodes Incorporated
BC856A – BC858C
Document Number: DS11207 Rev. 23 - 2
Y
Z
X
E
www.diodes.com
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 © 2013, Diodes Incorporated
www.diodes.com
BC856A-BC858C
BC856A – BC858C
Document Number: DS11207 Rev. 23 - 2
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December 2013
© Diodes Incorporated
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