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AC857BQ-7
Bipolar (BJT) Single Transistor, PNP, 45 V, 100 mA, 350 mW, SOT-23, Surface Mount
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- Manufacturer: DIODES INC.
- Product type:
- MSL: MSL 1 - Unlimited
- SVHC: No SVHC (25-Jun-2025)
- No. of Pins: 3Pins
- Product Range: -
- Qualification: AEC-Q101
- Power Dissipation: 350mW
- Transistor Mounting: Surface Mount
- Transistor Polarity: PNP
- Transition Frequency: 200MHz
- Transistor Case Style: SOT-23
- DC Current Gain hFE Min: 220hFE
- Operating Temperature Max: 150°C
- Continuous Collector Current: 100mA
- Collector Emitter Voltage Max: 45V
| Delivery and price | |
|---|---|
| Units per pack | 5000 |
| Price | 0.03 € |
| Current stock | 500+ |
| Lead time | 30 days |
Datasheet
**AC857BQ-AC857CQ** **PNP SMALL SIGNAL TRANSISTOR IN SOT23** ## **Description** The AC857BQ-AC857CQ Bipolar Junction Transistors (BJT) are designed to meet the stringent requirements of Automotive Applications. ## **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 ## **Features** - Ideally Suited for Automatic Insertion - Terminals: Finish – Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 - Weight: 0.008 grams (Approximate) - Complementary NPN Types: AC847BQ-AC847CQ - 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)** **==> picture [347 x 122] intentionally omitted <==** **----- Start of picture text -----**<br> C<br>SOT23 C<br>B<br>wm © LL<br>B E<br>E<br>Top View Device Symbol Top View<br>Pin-Out<br>**----- End of picture text -----**<br> ## **Ordering Information** (Notes 4 & 5) |**Ordering Informationg Information Information**(Notes 4 & 5)|**Ordering Informationg Information Information**(Notes 4 & 5)|**Ordering Informationg Information Information**(Notes 4 & 5)|**Ordering Informationg Information Information**(Notes 4 & 5)|**Ordering Informationg Information Information**(Notes 4 & 5)| |---|---|---|---|---| |||||| |**Product**|**Compliance**|**Marking**|**Reel Size (inches)**|**Quantity per Reel**| |AC857BQ-7|Automotive|2C6|7|3,000| |AC857CQ-7|Automotive|2C7|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. Refer to http://www.diodes.com/product_compliance_definitions.html. 5. For packaging details, go to our website at http://www.diodes.com/products/packages.html. ## **Marking Information** **==> picture [29 x 7] intentionally omitted <==** **----- Start of picture text -----**<br> SOT23<br>**----- End of picture text -----**<br> **==> picture [523 x 160] intentionally omitted <==** **----- Start of picture text -----**<br> XXX = Product Type Marking Code<br>XXX YM = Date Code Marking<br>Y or Y = Year (ex: E = 2017)<br>M or M = Month (ex: 9 = September)<br>Date Code Key<br>Year 2016 2017 2018 2019 2020 2021 2022 2023<br>Code D E F G H I J K<br>ee<br>Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec<br>a Code 1 2 3 4 5 6 7 8 9 O N D<br>AC857BQ-AC857CQ 1 of 7 April 2017<br>Document Number: DS39359 Rev. 3 - 2 www.diodes.com © Diodes Incorporated<br>YM<br>**----- End of picture text -----**<br> **AC857BQ-AC857CQ** **Absolute Maximum Ratings** (@TA = +25°C, unless otherwise specified.) **==> picture [495 x 85] intentionally omitted <==** **----- Start of picture text -----**<br> ||||| |---|---|---|---| |Characteristic|Symbol|Value|Unit| |Collector-Base Voltage|VCBO|-50|V| |Collector-Emitter Voltage|VCEO|-45|V| |Emitter-Base Voltage|VEBO|-5.0|V| |Continuous Collector Current|IC|-100|mA| |Peak Collector Current|ICM|-200|mA| |Peak Emitter Current|IEM|-200|mA| |Peak Base Current|IBM|-200|mA| **----- End of picture text -----**<br> **Thermal Characteristics** (@TA = +25°C, unless otherwise specified.) **==> picture [495 x 71] intentionally omitted <==** **----- Start of picture text -----**<br> |||||| |---|---|---|---|---| |Characteristic|Symbol|Value|Unit| |(Note 6)|310| |Power Dissipation|PD|mW| |(Note 7)|350| |(Note 6)|403| |Thermal Resistance, Junction to Ambient|(Note 7)|RθJA|357|°C/W| |Thermal Resistance, Junction to Leads|(Note 8)|RθJL|350|°C/W| |Operating and Storage Temperature Range|TJ,TSTG|-65 to +150|°C| **----- End of picture text -----**<br> ## **ESD Ratings** (Note 9) **==> picture [516 x 29] intentionally omitted <==** **----- Start of picture text -----**<br> |||||| |---|---|---|---|---| |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| **----- End of picture text -----**<br> Notes: 6. 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. 7. Same as Note 6, except the device is mounted on 15mm 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. 2 of 7 **www.diodes.com** AC857BQ-AC857CQ Document Number: DS39359 Rev. 3 - 2 April 2017 © Diodes Incorporated **AC857BQ-AC857CQ** ## **Thermal Characteristics and Derating Information** **==> picture [217 x 342] intentionally omitted <==** **----- Start of picture text -----**<br> 0.4<br>Ft} |] ttt td tt td<br>~<br>0.3 LN<br>0.2 poePT<br>Tt TT| | | IE |NELELELEINE | ELLE<br>NJ<br>0.1<br>SEEREEEENGEEEI<br>0.0 PtrT TT| | |ETttTTttyINGTONENs TE<br>0 25 50 75 100 125 150<br> Temperature (oC)<br>Derating Curve<br>10<br>Sr<br>o<br>BANGSE Single Pulse. TA=25 C atl<br>PNT PT PETE TTT TTT<br>a<br>1 CONTACT<br>o_o o_o<br>PTT SSE<br>TE TT oe<br>0.1<br>10m 100m 1 10 100 1k<br>Pulse Width (s)<br> Max Power Dissipation (W)<br> Max Power Dissipation (W)<br>**----- End of picture text -----**<br> **==> picture [219 x 154] intentionally omitted <==** **----- Start of picture text -----**<br> 400<br>350 a a ee a a |<br>FETT CTMEC CHUNUNECE<br>300 Pe alll<br>250 Mil y |<br>FRET<br>D=0.5<br>200 Tl<br>150 FENCESeEH D=0.1 eSIAT eTTINT||<br>100 D=0.2 Single Pulse<br>ay RGA on cul tl<br>50<br>maa mtd D=0.05<br>0 c etnome| WTae|<br>100μ100µ 1m 10m 100m 1 10 100 1k<br>Pulse Width (s)<br>C/W)<br>o<br>Thermal Resistance (<br>**----- End of picture text -----**<br> **Transient Thermal Impedance** **Pulse Power Dissipation** 3 of 7 **www.diodes.com** AC857BQ-AC857CQ Document Number: DS39359 Rev. 3 - 2 April 2017 © Diodes Incorporated **AC857BQ-AC857CQ** **Electrical Characteristics** (@TA = +25°C, unless otherwise specified.) **==> picture [522 x 330] intentionally omitted <==** **----- Start of picture text -----**<br> ||||||||||||| |---|---|---|---|---|---|---|---|---|---|---|---| |Characteristic|Symbol|Min|Typ|Max|Unit|Test Condition| |_———————————|Collector-Base Breakdown Voltage|BVCBO|-50|—|—|V|IC = -10µA| |Collector-Emitter Breakdown Voltage (Note 10)|BVCEO|-45|—|—|V|IC = -10mA| |se|Emitter-Base Breakdown Voltage|BVEBO|-5|—|—|V|IE|= -1µA| |-15|nA|VCB = -30V| |es|Collector Cutoff Current|ICBO|ee|—|re|—|-4|pee|µA|eee|VCB = -30V, TJ = +150°C| |Collector Emitter Cutoff Current|ICES|—|—|-15|nA|VCE = -50V| |se|Emitter-Base Cutoff Current|IEBO|—|—|-100|nA|VEB = -5V| |AC857BQ|—|330|—| |Small Signal Current Gain (Note 10)|hfe|—| |AC857CQ|—|600|—| |nn|ae| |AC857BQ|—|4.5|—| |Input Impedance (Note 10)|hie|kΩ| |ee|AC857CQ|—|8.7|—|IC = -2.0mA, VCE = -5V| |AC857BQ|—|30|—|f = 1.0kHz| |Output Admittance (Note 10)|hoe|µS| |AC857CQ|—|60|—| |nn|ae| |AC857BQ|—|2x10|[-4]|—| |Reverse Voltage Transfer Ratio (Note 10)|hre|—| |AC857CQ|—|3x10|[-4]|—| |nn|ae| |AC857BQ|220|290|475| |DC Current Gain (Note 10)|hFE|—|IC = -2.0mA, VCE = -5V| |AC857CQ|420|520|800| |ee|aeeee| |-75|-300|IC = - 10mA, IB = -0.5mA| |ee|Collector-Emitter Saturation Voltage (Note 10)|VCE(SAT)|—|_|-250|SFE|-650|mV|IC = - 100mA, IB = -5.0mA| |ee|Base-Emitter Turn-On Voltage (Note 10)|VBE(ON)|-600 —|EE|-650 —|-750 -820|E|mV|E|IICC|= -2mA= -10mA, V, VCE CE = -5V = -5V| |-700|—|IC|= -10mA, IB = -0.5mA| |ec|Base-Emitter Saturation Voltage (Note 10)|VBE(SAT)|—|-850|-1100|mV|IC|= -100mA, IB = -5mA| |a|Output Capacitance|Cobo|—|OOO_|3|SE|—|pF|VCB = -10V, f = 1.0MHz| |VCE = -5V, IC = -10mA,| |Transition Frequency|fT|100|200|—|MHz| |GO|f = 100MHz| |VCE = -5V, IC = -200µA| |Noise Figure|NF|—|2|10|dB|RS = 2kΩ, f = 1kHz| |eeee|ee|ee ee|∆f = 200Hz| |Note:|10. Measured under pulsed conditions. Pulse width ≤ 300µs. Duty cycle ≤ 2%.| **----- End of picture text -----**<br> 4 of 7 **www.diodes.com** AC857BQ-AC857CQ Document Number: DS39359 Rev. 3 - 2 April 2017 © Diodes Incorporated **AC857BQ-AC857CQ** ## **Typical Electrical Characteristics** (@TA = +25°C, unless otherwise specified.) **==> picture [215 x 439] intentionally omitted <==** **----- Start of picture text -----**<br> 1,000<br>T = 150°CA V = 5VCE<br>a S— a | |—||<br>I [N] EE EN<br>G [A]<br>100<br>T<br>N T = 25°CA<br>E SIN cine!<br>RR T = -50°CA<br>C [U]<br>se |oNl<br>D [C]<br>|<br>, 10<br>F [E]<br>h eeea OO | OOO<br>1 tl<br>1 10 100 1,000<br>I , COLLECTOR CURRENT (mA)C<br>Figure 1 Typical DC Current Gain vs. Collector Current<br>1,000<br>VCE = 5V<br>ee<br>eel<br>100<br>ail|||<br>a<br>a<br>10 an eeea<br>1 10 100<br>IC, COLLECTOR CURRENT (mA)<br>Figure 3 Gain-Bandwidth Product vs Collector Current<br>f , GAIN-BANDWIDTH PRODUCT (MHz)t<br>, DC CURRENT GAIN<br>FE<br>h<br>**----- End of picture text -----**<br> **==> picture [229 x 217] intentionally omitted <==** **----- Start of picture text -----**<br> 0.5<br>IC<br>IB [= 10]<br>[R] T [T] MEI [V)] ( 0.4 FM ,<br>G [E]<br>- [E]<br>[R] TO O [LTA] 0.3 U a<br>V<br>[LLEC] O T [ION]<br>C 0.2 UTM T = 25°CA if<br>, T [)] A T [URA] T = 150°CA IMT GT<br>A<br>( [S] C [E] S y<br>V 0.1 Al Ir<br>T = -50°CA<br>0 eh Tl<br>0.1 1 10 100 1,000<br>I , COLLECTOR CURRENT (mA)C<br>Figure 2 Typical Collector-Emitter Saturation Voltage<br>vs. Collector Current<br>, COLLECTOR-EMITTER<br>CE(SAT) SATURATION VOLTAGE (V)<br>V<br>**----- End of picture text -----**<br> 5 of 7 **www.diodes.com** AC857BQ-AC857CQ Document Number: DS39359 Rev. 3 - 2 April 2017 © Diodes Incorporated **AC857BQ-AC857CQ** ## **Package Outline Dimensions** **==> picture [468 x 242] intentionally omitted <==** **----- Start of picture text -----**<br> Please see http://www.diodes.com/package-outlines.html for the latest version.<br>SOT23<br>All 7°<br>H SOT23<br>GAUGE PLANE Dim Min Max Typ<br>0.25<br>J A 0.37 0.51 0.40<br>K1 K B 1.20 1.40 1.30<br>C 2.30 2.50 2.40<br>a D 0.89 1.03 0.915<br>A M F 0.45 0.60 0.535<br>G 1.78 2.05 1.83<br>==a f L y L1 SSE<br>H 2.80 3.00 2.90<br>J 0.013 0.10 0.05<br>K 0.890 1.00 0.975<br>K1 0.903 1.10 1.025<br>C B<br>L 0.45 0.61 0.55<br>L1 0.25 0.55 0.40<br>M 0.085 0.150 0.110<br>a 0° 8° --<br>D All Dimensions in mm<br>F G<br>| TT tt<br>**----- End of picture text -----**<br> ## **Suggested Pad Layout** Please see http://www.diodes.com/package-outlines.html for the latest version. **SOT23** **==> picture [136 x 122] intentionally omitted <==** **----- Start of picture text -----**<br> Y<br>Y1 Eat C<br>a<br>roo X X1<br>**----- End of picture text -----**<br> |**Dimensions**|**Value(in mm)**| |---|---| |**C**|**()**<br>2.0| |**X**|0.8| |**X1**|1.35| |**Y**|0.9| |**Y1**|2.9| 6 of 7 **www.diodes.com** AC857BQ-AC857CQ Document Number: DS39359 Rev. 3 - 2 April 2017 © Diodes Incorporated **AC857BQ-AC857CQ** ## **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 © 2017, Diodes Incorporated **www.diodes.com** 7 of 7 **www.diodes.com** AC857BQ-AC857CQ Document Number: DS39359 Rev. 3 - 2 April 2017 © Diodes Incorporated
Updated at June 6, 2026
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