BC846A-BC848C NPN Small-Signal Transistor in SOT23
Brand: Diodes Incorporated
Features
- Ideally suited for automatic insertion
- Complementary PNP types: BC856A-BC858C
- For switching and AF amplifier applications
- Totally Lead-Free & Fully RoHS Compliant
- Halogen and Antimony Free. "Green" Device
- An automotive-compliant part is available under a separate datasheet (BC846AQ-BC848CQ)
Mechanical Data
- Package: SOT23
- Package 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
| Orderable Part Number | Package | Marking | Reel Size (inches) | Qty. | Carrier |
| BC846A-7-F | SOT23 | K1Q | 7 | 3,000 | Reel |
| BC846B-7-F | SOT23 | K1R | 7 | 3,000 | Reel |
| BC846B-13-F | SOT23 | K1R | 13 | 10,000 | Reel |
| BC847A-7-F | SOT23 | K1Q | 7 | 3,000 | Reel |
| BC847A-13-F | SOT23 | K1Q | 13 | 10,000 | Reel |
| BC847B-7-F | SOT23 | K1R | 7 | 3,000 | Reel |
| BC847B-13-F | SOT23 | K1R | 13 | 10,000 | Reel |
| BC847C-7-F | SOT23 | K1M | 7 | 3,000 | Reel |
| BC847C-13-F | SOT23 | K1M | 13 | 10,000 | Reel |
| BC848A-7-F | SOT23 | K1Q | 7 | 3,000 | Reel |
| BC848B-7-F | SOT23 | K1R | 7 | 3,000 | Reel |
| BC848B-13-F | SOT23 | K1R | 13 | 10,000 | Reel |
| BC848C-7-F | SOT23 | K1M | 7 | 3,000 | Reel |
Notes:
- No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
- 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.
- Halogen- and Antimony-free "Green" products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + CI) and <1000ppm antimony compounds.
- For packaging details, go to our website at https://www.diodes.com/design/support/packaging/diodes-packaging/.
Marking Information
XXX = Product Type Marking Code
YM = Date Code Marking
Y or Y = Year (e.g., M = 2025)
M or M = Month (e.g., 9 = September)
Date Code Key:
| Year | 2007 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | 2031 | 2032 | 2033 | 2034 |
| Code | U | M | N | P | R | S | T | U | V | W | X |
| 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 |
Absolute Maximum Ratings
(@TA = +25°C, unless otherwise specified.)
| Characteristic | Symbol | BC846A/B | BC847A/B/C | BC848A/B/C | Value | Unit |
| Collector-Base Voltage | VCBO | 80 | 50 | 30 | V | |
| Collector-Emitter Voltage | VCEO | 65 | 45 | 30 | V | |
| Emitter-Base Voltage | VEBO | 6.0 | 5.0 | 5.0 | V | |
| 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 | 310 | mW |
| Thermal Resistance, Junction to Ambient (Note 6) | ROJA | 403 | °C/W |
| Thermal Resistance, Junction to Leads (Note 7) | ROJL | 357 | °C/W |
| Operating and Storage Temperature Range | TJ, TSTG | -65 to +150 | °C |
ESD Ratings
(Note 8)
| Characteristic | Symbol | Value | Unit | JEDEC Class |
| Electrostatic Discharge - Human Body Model | ESD HBM | 4,000 | V | 3A |
| Electrostatic Discharge - Machine Model | ESD MM | 400 | V | C |
Notes:
- 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.
- Same as Note 5, except the device is mounted on 15mm x 15mm 1oz copper.
- Thermal resistance from junction to solder-point (at the end of the leads).
- Refer to JEDEC specifications JESD22-A114 and JESD22-A115.
Electrical Characteristics
(@TA = +25°C, unless otherwise specified.)
| Characteristic | Symbol | Min | Typ | Max | Unit | Test Condition |
| Collector-Base Breakdown Voltage | BVCBO | 80 (BC846A/B) | 50 (BC847A/B/C) | 30 (BC848A/B/C) | V | IC = 10μA |
| Collector-Emitter Breakdown Voltage (Note 9) | BVCEO | 65 (BC846A/B) | 45 (BC847A/B/C) | 30 (BC848A/B/C) | V | IC = 10mA |
| Emitter-Base Breakdown Voltage | BVEBO | 6 (BC846A/B) | 5 (BC847A/B/C) | 5 (BC848A/B/C) | V | IE = 1μA |
| Collector Cutoff Current | ICBO | 15 nA (VCB = 30V) | μA | VCB = 30V, TJ = +150°C | ||
| Collector Emitter Cutoff Current | ICES | 15 nA (VCE = 80V for BC846A/B, VCE = 50V for BC847A/B/C, VCE = 30V for BC848A/B/C) | nA | |||
| Emitter Base Cutoff Current | IEBO | 100 nA | nA | VEB = 5V | ||
| Small-Signal Current Gain (Note 9) | hFE | 200 (BC846A/BC847A/BC848A) | 330 (BC846B/BC847B/BC848B) | 600 (BC847C/BC848C) | ||
| Input Impedance (Note 9) | hie | 2.7 (BC846A/BC847A/BC848A) | 4.5 (BC846B/BC847B/BC848B) | 8.7 (BC847C/BC848C) | kΩ | IC = 2.0mA, VCE = 5V, f = 1.0kHz |
| Output Admittance (Note 9) | hoe | 18 (BC846A/BC847A/BC848A) | 30 (BC846B/BC847B/BC848B) | 60 (BC847C/BC848C) | μS | |
| Reverse Voltage Transfer Ratio (Note 9) | hre | 1.5 x 10⁻⁴ (BC846A/BC847A/BC848A) | 2 x 10⁻⁴ (BC846B/BC847B/BC848B) | 3 x 10⁻⁴ (BC847C/BC848C) | ||
| DC Current Gain (Note 9) | hFE | 110-220 (BC846A/BC847A/BC848A) | 200-450 (BC846B/BC847B/BC848B) | 420-800 (BC847C/BC848C) | IC = 2.0mA, VCE = 5V | |
| Collector-Emitter Saturation Voltage (Note 9) | VCE(sat) | 90 (IC = 10mA, IB = 0.5mA) | 250 (IC = 100mA, IB = 5.0mA) | 600 | mV | |
| Base-Emitter Turn-On Voltage (Note 9) | VBE(on) | 580-700 (IC = 2mA, VCE = 5V) | 770 (IC = 10mA, VCE = 5V) | mV | ||
| Base-Emitter Saturation Voltage (Note 9) | VBE(sat) | 700 (IC = 10mA, IB = 0.5mA) | 900 (IC = 100mA, IB = 5mA) | mV | ||
| 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 (Rs = 2kΩ, f = 1kHz) | 10 (Af = 200Hz) | dB | ||
Note 9: Measured under pulsed conditions. Pulse width ≤ 300µs. Duty cycle ≤ 2%.
Typical Electrical Characteristics
(@TA = +25°C, unless otherwise specified.)
Figure 5. Typical DC Current Gain vs. Collector Current
This graph shows the relationship between DC current gain (hFE) and collector current (IC) at different temperatures (-50°C, 25°C, 150°C).
Figure 6. Typical Collector-Emitter Saturation Voltage vs. Collector Current
This graph illustrates the collector-emitter saturation voltage (VCE(sat)) as a function of collector current (IC) at different temperatures (-50°C, 25°C, 150°C).
Figure 7. Typical Gain-Bandwidth Product vs. Collector Current
This graph displays the gain-bandwidth product (fT) versus collector current (IC) at VCE = 5V.
Package Outline Dimensions
SOT23 Package Outline:
A diagram shows the SOT23 package with dimensions labeled A through M and angle alpha (α). A table provides the minimum, maximum, and typical values for each dimension in millimeters.
Suggested Pad Layout:
A diagram illustrates the suggested pad layout for the SOT23 package, labeled X, Y, X1, and Y1. A table provides the value (in mm) for C, X, X1, Y, and Y1.
Important Notice
Diodes Incorporated (Diodes) and its subsidiaries make no warranty of any kind, express or implied, with regards to any information contained in this document, including, but not limited to, the implied warranties of merchantability, fitness for a particular purpose or non-infringement of third party intellectual property rights (and their equivalents under the laws of any jurisdiction).
The information contained herein is for informational purpose only and is provided only to illustrate the operation of Diodes' products described herein and application examples. Diodes does not assume any liability arising out of the application or use of this document or any product described herein. This document is intended for skilled and technically trained engineering customers and users who design with Diodes' products.
Diodes' products may be used to facilitate safety-related applications; however, in all instances customers and users are responsible for (a) selecting the appropriate Diodes products for their applications, (b) evaluating the suitability of Diodes' products for their intended applications, (c) ensuring their applications, which incorporate Diodes' products, comply the applicable legal and regulatory requirements as well as safety and functional-safety related standards, and (d) ensuring they design with appropriate safeguards (including testing, validation, quality control techniques, redundancy, malfunction prevention, and appropriate treatment for aging degradation) to minimize the risks associated with their applications.
Diodes assumes no liability for any application-related information, support, assistance or feedback that may be provided by Diodes from time to time. Any customer or user of this document or products described herein will assume all risks and liabilities associated with such use, and will hold Diodes and all companies whose products are represented herein or on Diodes' websites, harmless against all damages and liabilities.
Products described herein may be covered by one or more United States, international or foreign patents and pending patent applications. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks and trademark applications. Diodes does not convey any license under any of its intellectual property rights or the rights of any third parties (including third parties whose products and services may be described in this document or on Diodes' website) under this document.
Diodes' products are provided subject to Diodes' Standard Terms and Conditions of Sale (https://www.diodes.com/about/company/terms-and-conditions/terms-and-conditions-of-sales/) or other applicable terms. This document does not alter or expand the applicable warranties provided by Diodes. Diodes does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Diodes' products and technology may not be used for or incorporated into any products or systems whose manufacture, use or sale is prohibited under any applicable laws and regulations. Should customers or users use Diodes' products in contravention of any applicable laws or regulations, or for any unintended or unauthorized application, customers and users will (a) be solely responsible for any damages, losses or penalties arising in connection therewith or as a result thereof, and (b) indemnify and hold Diodes and its representatives and agents harmless against any and all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim relating to any noncompliance with the applicable laws and regulations, as well as any unintended or unauthorized application.
While efforts have been made to ensure the information contained in this document is accurate, complete and current, it may contain technical inaccuracies, omissions and typographical errors. Diodes does not warrant that information contained in this document is error-free and Diodes is under no obligation to update or otherwise correct this information. Notwithstanding the foregoing, Diodes reserves the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. 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.
Any unauthorized copying, modification, distribution, transmission, display or other use of this document (or any portion hereof) is prohibited. Diodes assumes no responsibility for any losses incurred by the customers or users or any third parties arising from any such unauthorized use.
This Notice may be periodically updated with the most recent version available at https://www.diodes.com/about/company/terms-and-conditions/important-notice.
The Diodes logo is a registered trademark of Diodes Incorporated in the United States and other countries. All other trademarks are the property of their respective owners.
