BC846A – BC848C
Document Number: DS11108 Rev. 23 - 2
1 of 6
www.diodes.com August 2011
© Diodes Incorporated
BC846A-BC848C
NPN SURFACE MOUNT SMALL SIG NAL TRANSISTOR IN SOT23
Features
• Ideally Suited for Automatic Insertion
• Complementary PNP Types Available (BC856 – BC858)
• For switching and AF Amplifier Applications
• Lead Free, RoHS Compliant (Note 1)
• Halogen and Antimony Free "Green" Device (Note 2)
• Qualified to AEC-Q101 Standards for High Reliability
Mechanical Data
• Case: SOT-23
• UL Flammability Rating 94V-0
• Case material: molded Plastic “Green” Compound
• Moisture Sensitivity: Level 1 per J-STD-020
• Terminals: Matte Tin Finish
• Weight: 0.008 grams (Approximate)
Ordering Information (Note 3 & 4)
Product Marking
Reel size
(inches) Quantity per reel
BC846A-7-F K1Q 7 3,000
BC846B-7-F K1R 7 3,000
BC846BQ-7-F K1R 7 3,000
BC846B-13-F K1R 13 10,000
BC847A-7-F K1Q 7 3,000
BC847AQ-7-F K1Q 7 3,000
BC847A-13-F K1Q 13 10,000
BC847B-7-F K1R 7 3,000
BC847BQ-7-F K1R 7 3,000
BC847B-13-F K1R 13 10,000
Notes: 1. No purposefully added lead.
2. Diodes Inc.`s “Green” Policy can be found on our website at http://www.diodes.com
3. Tape width is 8mm. For more packaging details, go to our website at http://www.diodes.com.
4. Products with Q-suffix are automotive grade. All other products are commercial grade.
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 Aug Sep Oct Nov Dec
Code 1 2 3 4 5 6 7 8 9 O N D
Product Marking
Reel size
(inches) Quantity per reel
BC847C-7-F K1M 7 3,000
BC847C-13-F K1M 13 10,000
BC848A-7-F K1Q 7 3,000
BC848B-7-F K1R 7 3,000
BC848B-13-F K1R 13 10,000
BC848C-7-F K1M 7 3,000
BC848CQ-7-F K1M 7 3,000
Top View
SOT23
Device Symbol Top View
Pin
-
Out
XXX = Product Type Marking Code,
YM = Date Code Marking
Y = Year ex: X = 2010
M = Month ex: 9 = September
XXX
YM
C
B
E
BC846A – BC848C
Document Number: DS11108 Rev. 23 - 2
2 of 6
www.diodes.com August 2011
© Diodes Incorporated
BC846A-BC848C
Maximum Ratings @TA = 25°C unless otherwise specified
Characteristic Symbol Value Unit
Collector-Base Voltage BC846 VCBO 80 V
BC847 50
BC848 30
Collector-Emitter Voltage BC846 VCEO 65 V
BC847 45
BC848 30
Emitter-Base Voltage BC846, BC847 VEBO 6.0 V
BC848 5.0
Continuous Collector Current IC 100 mA
Peak Collector Current ICM 200 mA
Peak Emitter Current IEM 200 mA
Thermal Characteristics @TA = 25°C unless otherwise specified
Characteristic Symbol Value Unit
Power Dissipation (Note 5) PD 300 mW
Thermal Resistance, Junction to Ambient (Note 5) RθJA 417 °C/W
Operating and Storage Temperature Range TJ, TSTG -65 to +150 °C
Notes: 5. For a device surface mounted on minimum recommended pad layout FR4 PCB with high coverage of single sided 1oz copper in still air conditions; the
device is measured when operating in a steady-state condition.
BC846A – BC848C
Document Number: DS11108 Rev. 23 - 2
3 of 6
www.diodes.com August 2011
© Diodes Incorporated
BC846A-BC848C
Electrical Characteristics @TA = 25°C unless otherwise specified
Characteristic Symbol Min Typ Max Unit Test Condition
Collector-Base Breakdown Voltage BC846 BVCBO 80 - - V IC = 10µA
BC847 50
BC848 30
Collector-Emitter Breakdown Voltage
(Note 6)
BC846 BVCEO 65 - - V IC = 10mA
BC847 45
BC848 30
Emitter-Base Breakdown Voltage BC846 / BC847 BVEBO 6 - - V IE = 1µA
BC848 5
Collector Cutoff Current ICBO - -
15 µA VCB = 40V
5 VCB = 30V, TA=150°C
Collector Emitter Cutoff Current BC846 ICES - -
15 nA VCE= 80V
BC847 15
VCE= 50V
BC848 15
VCE= 30V
Small Signal Current Gain
(Note 6)
BC846A / BC847A / BC848A hfe - 200 - -
IC = 2.0mA, VCE = 5V
f=1.0kHz
BC846B / BC847B / BC848B 330
BC847C / BC848C 600
Input Impedance
(Note 6)
BC846A / BC847A / BC848A hie - 2.7 - kΩ
BC846B / BC847B / BC848B 4.5
BC847C / BC848C 8.7
Output Admittance
(Note 6)
BC846A / BC847A / BC848A hoe - 18 - µS
BC846B / BC847B / BC848B 30
BC847C / BC848C 60
Reverse Voltage Transfer
Ratio (Note 6)
BC846A / BC847A / BC848A hre - 1.5x10-
4
- -
BC846B / BC847B / BC848B 2x10-
4
BC847C / BC848C 3x10-
4
DC Current Gain (Note 6) BC846A / BC847A / BC848A hFE 110 180 220
- IC = 2.0mA, VCE = 5V BC846B / BC847B / BC848B 200 290 450
BC847C / BC848C 420 520 800
Collector-Emitter Saturation Voltage
(Note 6) VCE(sat) - 90 250
mV IC = 10mA, IB = 0.5mA
200 600 IC = 100mA, IB = 5.0mA
Base-Emitter Turn-On Voltage(Note 6) VBE(on) 580 660 700
mV IC = 2mA, VCE = 5V
- - 770 IC = 10mA, VCE = 5V
Base-Emitter Saturation Voltage(Note 6) VBE(sat) - 700 - mV
IC = 10mA, IB = 0.5mA
900 IC = 100mA, IB = 5mA
Output Capacitance Cobo - 3 - pF
VCB = 10V, f = 1.0MHz
Transition Frequency fT 100 300 - MHz
VCE = 5V, IC = 10mA,
f = 100MHz
Noise Figure NF - 2 10 dB VCE=5V, IC =200µA
RS =2kΩ, f=1kHz
∆f=200Hz
Note: 6.
Short duration pulse test used to minimize self-heating effect.
BC846A – BC848C
Document Number: DS11108 Rev. 23 - 2
5 of 6
www.diodes.com August 2011
© Diodes Incorporated
BC846A-BC848C
Package Outline Dimensions
Suggested Pad Layout
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 0.903 1.10 1.00
K1 - - 0.400
L 0.45 0.61 0.55
M 0.085 0.18 0.11
α 0° 8° -
All Dimensions in mm
Dimensions Value (in mm)
Z 2.9
X 0.8
Y 0.9
C 2.0
E 1.35
A
M
JL
D
F
BC
H
K
G
K1
XE
Y
C
Z
BC846A – BC848C
Document Number: DS11108 Rev. 23 - 2
6 of 6
www.diodes.com August 2011
© Diodes Incorporated
BC846A-BC848C
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 doc ument and an y product described herein. Diodes Incorporat ed does not assu me any liability arising
out of the application or use of this document or any product descr ibed 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.
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 t o 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 perfo rm can be re asonabl y 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 I ncorporated 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 d amages arising out of the use of Diodes Incorpor ated products in such safety-critical, life
support devices or systems.
Copyright © 2011, Diodes Incorporated
www.diodes.com
