BC856A – BC858C

Document overview

  • Manufacturer or author: Provided By digicamel.com
  • PDF pages: 7

Technical content

Features

  • Ideally Suited for Automatic Insertion
  • Complementary NPN Types: BC846A-BC848C
  • For Switching and AF Amplifier Applications
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • This part is qualified to JEDEC standards (as references in AEC-Q) for High Reliability. https://www.diodes.com/quality/product-definitions/
  • The automotive-compliant parts are available under two separate datasheets (BC856AQ – BC857BQ and BC857CQ) 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 (Note 4) Orderable Part Number Status Package Marking Reel Size (Inches) Packing Qty. Carrier BC856A-7-F Active SOT23 K3A 7 3,000 Reel BC856B-7-F Active SOT23 K3B 7 3,000 Reel BC856B-13-F Active SOT23 K3B 13 10,000 Reel BC857A-7-F Active SOT23 K3A 7 3,000 Reel BC857B-7-F Active SOT23 K3B 7 3,000 Reel BC857B-13-F Active SOT23 K3B 13 10,000 Reel BC857C-7-F Active SOT23 K3G 7 3,000 Reel BC857C-13-F Active SOT23 K3G 13 10,000 Reel BC858A-7-F EOL (Use BC857A-7-F) SOT23 K3A 7 3,000 Reel BC858B-7-F Active SOT23 K3B 7 3,000 Reel BC858C-7-F Active SOT23 K3G 7 3,000 Reel 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, go to our website at https://www.diodes.com/design/support/packaging/diodes -packaging/. C E B Top View SOT23 Device Symbol Top View Pinout

BC856A – BC858C Document number: DS11207 Rev. 28 - 2 2 of 7 www.diodes.com May 2025 © 2025 Copyright Diodes Incorporated. All Rights Reserved. BC856A – BC858C Marking Information 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 Value Unit Collector-Base Voltage BC856A/B VCBO -80 V BC857A/B/C -50 BC858A/B/C -30 Collector-Emitter Voltage BC856A/B VCEO -65 V BC857A/B/C -45 BC858A/B/C -30 Emitter-Base Voltage VEBO -5.0 V Continuous Collector Current IC -100 mA Peak Collector Current (Single Pulse) ICM -200 mA Peak Emitter Current IEM -200 mA Peak Base Current (Single Pulse) IBM -200 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 4,000 V 3A Electrostatic Discharge - Machine Model ESD MM 400 V C Notes: 5. For a device mounted on minimum recommended pad layout 1oz copper that is on a single-sided FR-4 PCB; device is measured under still air conditions whilst operating in a steady-state. 6. Same as Note 5, except the device is mounted on 15mm  15mm 1oz copper. 7. Thermal resistance from junction to solder-point (at the end of the leads). 8. Refer to JEDEC specification JESD22-A114 and JESD22-A115. xxx YM xxx = Product Type Marking Code (Please see Ordering Information) YM = Date Code Marking Y or Y or Y = Year (ex: M = 2025) M or M = Month (ex: 9 = September)

BC856A – BC858C Document number: DS11207 Rev. 28 - 2 4 of 7 www.diodes.com May 2025 © 2025 Copyright Diodes Incorporated. All Rights Reserved. BC856A – BC858C Electrical Characteristics (@ TA = +25° C, unless otherwise specified.) Characteristic Symbol Min Typ Max Unit Test Condition Collector-Base Breakdown Voltage BC856A/B BVCBO -80 — — V IC = -10µA BC857A/B/C -50 BC858A/B/C -30 Collector-Emitter Breakdown Voltage (Note 9) BC856A/B BVCEO -65 — — V IC = -10mA BC857A/B/C -45 BC858A/B/C -30 Emitter-Base Breakdown Voltage BVEBO -5 — — V IE = -1µA Collector Cutoff Current ICBO — — -15 nA VCB = -30V -4 µA VCB = -30V, TJ = +150° C Collector Emitter Cutoff Current BC856A/B ICES — — -15 nA VCE = -80V BC857A/B/C -15 VCE = -50V BC858A/B/C -15 VCE = -30V Emitter-Base Cutoff Current IEBO — — -100 nA VEB = -5V Small-Signal Current Gain BC856A/BC857A/BC858A hfe — 200 — — IC = -2.0mA, VCE = -5V f = 1.0kHz BC856B/BC857B/BC858B 330 BC857C/BC858C 600 Input Impedance BC856A/BC857A/BC858A hie — 2.7 — kΩ BC856B/BC857B/BC858B 4.5 BC857C/BC858C 8.7 Output Admittance BC856A/BC857A/BC858A hoe — — µS BC856B/BC857B/BC858B 30 BC857C/BC858C 60 Reverse Voltage Transfer Ratio BC856A/BC857A/BC858A hre — 1.5x10-4 — — BC856B/BC857B/BC858B 2x10-4 BC857C/BC858C 3x10-4 DC Current Gain (Note 9) BC856A/BC857A/BC858A hFE 125 180 250 — IC = -2.0mA, VCE = -5V BC856B/BC857B/BC858B 220 290 475 BC857C/BC858C 420 520 800 Collector-Emitter Saturation Voltage (Note 9) VCE(sat) — -75 -300 mV IC = -10mA, IB = -0.5mA -250 -650 IC = -100mA, IB = -5.0mA Base-Emitter Turn-On Voltage (Note 9) VBE(on) -600 -650 -750 mV IC = -2mA, VCE = -5V — — -820 IC = -10mA, VCE = -5V Base-Emitter Saturation Voltage (Note 9) VBE(sat) — -700 — mV IC = -10mA, IB = -0.5mA -850 -1100 IC = -100mA, IB = -5mA Output Capacitance Cobo — 3 — pF VCB = -10V, f = 1.0MHz Transition Frequency fT 100 200 — MHz VCE = -5V, IC = -10mA, f = 100MHz Noise Figure NF — 2 10 dB VCE = -5V, IC = -200µA RS = 2kΩ, f = 1kHz ∆f = 200Hz Note: 9. Measured under pulsed conditions. Pulse width ≤ 300µs. Duty cycle ≤ 2% .

BC856A – BC858C Document number: DS11207 Rev. 28 - 2 6 of 7 www.diodes.com May 2025 © 2025 Copyright Diodes Incorporated. All Rights Reserved. BC856A – BC858C Package Outline Dimensions Please see http://www.diodes.com/package-outlines.html for the latest version. SOT23 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 Dimensions Value (in mm) C 2.0 X 0.8 X1 1.35 Y 0.9 Y1 2.9 J K1 K GAUGE PLANE 0.25 H L M All 7° A C B D GF a X Y Y1 C

BC856A – BC858C Document number: DS11207 Rev. 28 - 2 7 of 7 www.diodes.com May 2025 © 2025 Copyright Diodes Incorporated. All Rights Reserved. BC856A – BC858C IMPORTANT NOTICE 1. 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 PARTICUL AR PURPOSE OR NON -INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 2. 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 in corporate 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 co ntrol techniqu es, redundancy, malfunction prevention, and appropriate treatment for aging degradation) to minimize the risks associated with their applications. 3. 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. 4. 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 t rademarks 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. 5. 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. 6. Diodes’ products and technology may not be used for or incorporated into any products or systems whose manufacture, use or sa le is prohibited under any applicable laws and regulations. Should customers or users use Diodes’ products in contravention of a ny applicable laws or regulations, or for any unintended or unauthorized application, customers and users will (a) be solely responsible for any da mages, 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. 7. While efforts have been made to ensure the information contained in this document is accurate, complete and current, it may c ontain technical inaccuracies, omissions and typographical errors. Diodes does not warrant that information contained in this do cument 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. 8. Any unauthorized copying, modification, distribution, transmission, display or other use of this document (or any portion her eof) 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. 9. 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. © 2025 Diodes Incorporated. All Rights Reserved. www.diodes.com