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BC856AQ-7-F
Bipolar (BJT) Single Transistor, PNP, 65 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: BC856 Series
- 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: 125hFE
- Operating Temperature Max: 150°C
- Continuous Collector Current: 100mA
- Collector Emitter Voltage Max: 65V
| Delivery and price | |
|---|---|
| Units per pack | 5000 |
| Price | 0.038 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
**BC856AQ – BC857BQ** **PNP SMALL SIGNAL TRANSISTOR IN SOT23** ## **Features** - Ideally Suited for Automatic Insertion - Complementary NPN Types: BC846 – BC848 Family - For Switching and AF Amplifier Applications - **Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)** - **Halogen and Antimony Free. "Green" Device (Note 3)** - **The BC856AQ – BC857BQ are suitable for automotive applications requiring specific change control; these parts are AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities.** ## **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 - Terminals: Finish – Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 - Weight: 0.008 grams (Approximate) **https://www.diodes.com/quality/product-definitions/** **==> picture [308 x 117] intentionally omitted <==** **----- Start of picture text -----**<br> SOT23<br>C<br>B<br>@ O L)<br>E<br>Top View Device Symbol Top View<br>Pin-Out<br>**----- End of picture text -----**<br> ## **Ordering Information** (Note 4) |**Part Number**|**Compliance**|**Marking**|**Reel Size(inches)**|**Tape Width(mm)**|**Quantity Per Reel**| |---|---|---|---|---|---| |BC856AQ-7-F|Automotive|K3A|7|8|3,000| |BC856BQ-7-F|Automotive|K3B|7|8|3,000| |BC856BQ-13-F|Automotive|K3B|13|8|10,000| |BC857BQ-7-F|Automotive|K3B|7|8|3,000| - 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/. ## **Marking Information** **==> picture [521 x 117] intentionally omitted <==** **----- Start of picture text -----**<br> xxx = Product Type Marking Code<br> (Please see Ordering Information)<br>xxx<br>YM = Date Code Marking<br>Y or Y = Year (ex: G = 2019)<br>M or M = Month (ex: 9 = September)<br>Date Code Key<br>Year 2019 2020 2021 2022 2023 2024 2025 2026<br>Code G H I J K L M N<br>a<br>Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec<br>[——————— Code 1 — 2 3 — 4 — 5 — 6 7 8 9 O N D<br>YM<br>**----- End of picture text -----**<br> 1 of 7 **www.diodes.com** BC856AQ – BC857BQ Document number: DS42395 Rev. 1 - 2 November 2019 © Diodes Incorporated **BC856AQ – BC857BQ** ## **Absolute Maximum Ratings** (@TA = +25°C, unless otherwise specified.) |**Absolute Maximum Ratingsgss** (@TA = +25°C, unless otherwise specified.)@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Absolute Maximum Ratingsgss** (@TA = +25°C, unless otherwise specified.)@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|(@TA = +25°C, unless otherwise specified.)@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)pecified.)ecified.))||| |---|---|---|---|---| |**Characteristic**||**Symbol**|**Value**|**Unit**| |Collector-Base Voltage|BC856|VCBO|-80|V| ||BC857||-50|| |Collector-Emitter Voltage|BC856|VCEO|-65|V| ||BC857||-45|| |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| ## **Thermal Characteristics** (@TA = +25°C, unless otherwise specified.) |**Thermal Characteristics **(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Thermal Characteristics **(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +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| |Operatingand Storage Temperature Range||TJ, TSTG|-65 to +150|°C| ## **ESD Ratings** (Note 8) |**ESD Ratingsgss **(Note 8)|**ESD Ratingsgss **(Note 8)|**ESD Ratingsgss **(Note 8)|**ESD Ratingsgss **(Note 8)|**ESD Ratingsgss **(Note 8)|**ESD Ratingsgss **(Note 8)| |---|---|---|---|---|---| |**Characteristic**<br>**Symbol**<br>**Value**<br>**Unit**<br>**JEDEC Class**<br>Electrostatic Discharge - Human BodyModel<br>ESD HBM<br>4,000<br>V<br>3A<br>Electrostatic Discharge - Machine Model<br>ESD MM<br>400<br>V<br>C|||||| ||**Characteristic**|**Symbol**|**Value**|**Unit**|**JEDEC Class**| ||Electrostatic Discharge - Human BodyModel|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 15 mm 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. 2 of 7 **www.diodes.com** BC856AQ – BC857BQ Document number: DS42395 Rev. 1 - 2 November 2019 © Diodes Incorporated **BC856AQ – BC857BQ** ## **Thermal Characteristics and Derating Information** **==> picture [200 x 155] intentionally omitted <==** **----- Start of picture text -----**<br> 0.4<br>PF} | tt] dt ttt<br>0.3<br>HANS<br>poe<br>0.2 PITT<br>PF} |] tt INET| INLEE E<br>NI<br>0.1<br>rf} | | | tt tt INGE<br>0.0 SRR eANG NS\<br>0 25 50 75 100 125 150<br> Temperature (°C)Temperature (°C)<br> Max Power Dissipation (W)<br>**----- End of picture text -----**<br> ## **Derating Curve** **==> picture [217 x 154] intentionally omitted <==** **----- Start of picture text -----**<br> 400<br>350 a a | |<br>300<br>EEE er<br>250 io 4<br>D=0.5<br>200 ARETE<br>150 PTLee D=0.1 LS! CHIE CEH<br>EHIME IAT M ff TH! TT<br>100 D=0.2 Single Pulse<br>50 Be et SEMI al<br>D=0.05<br>0 FTstleereanLLY |NN I 1 a<br>100 µ 1m 10m 100m 1 10 100 1k<br>Pulse Width (s)<br>stance (°C/W)<br>Thermal<br>stance (°C/W)<br>Resi<br>Thermal<br>**----- End of picture text -----**<br> **Transient Thermal Impedance** **==> picture [216 x 171] intentionally omitted <==** **----- Start of picture text -----**<br> 10<br>NOT Ti Single Pulse. T A amb = 25=25°C°C Hl<br>PNOUUTTIEE TPTTTTPTT<br>LAN ETI TT EE TT<br>1 SIN<br>CITEHPNt HHH<br>PT SST<br>a aee<br>0.1 CHT<br>10m 100m 1 10 100 1k<br>Pulse Width (s)<br>Pulse Power Dissipation<br> Max Power Dissipation (W)<br>**----- End of picture text -----**<br> 3 of 7 **www.diodes.com** BC856AQ – BC857BQ Document number: DS42395 Rev. 1 - 2 November 2019 © Diodes Incorporated **BC856AQ – BC857BQ** **Electrical Characteristics** (@TA = +25°C, unless otherwise specified.) |**Electrical Characteristics** (@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics** (@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics** (@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics** (@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics** (@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics** (@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics** (@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics** (@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics** (@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics** (@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)| |---|---|---|---|---|---|---|---|---|---| |**Characteristic**<br>**Symbol**<br>**Min**<br>**Typ**<br>**Max**<br>**Unit**<br>**Test Condition**<br>Collector-Base Breakdown Voltage<br>BC856<br>BVCBO<br>-80<br>—<br>—<br>V<br>IC= -10µA<br>BC857<br>-50<br>Collector-Emitter Breakdown Voltage<br>(Note 9)<br>BC856<br>BVCEO<br>-65<br>—<br>—<br>V<br>IC= -10mA<br>BC857<br>-45<br>Emitter-Base Breakdown Voltage<br>BVEBO<br>-5<br>—<br>—<br>V<br>IE = -1µA<br>Collector Cutoff Current<br>ICBO<br>—<br>—<br>-15<br>nA<br>VCB= -30V<br>-4<br>µA<br>VCB= -30V, TJ= +150°C<br>Collector Emitter Cutoff Current<br>BC856<br>ICES<br>—<br>—<br>-15<br>nA<br>VCE= -80V<br>BC857<br>-15<br>VCE= -50V<br>Emitter-Base Cutoff Current<br>IEBO<br>—<br>—<br>-100<br>nA<br>VEB= -5V<br>Small Signal Current Gain<br>BC856A<br>hfe<br>—<br>200<br>—<br>—<br>IC= -2.0mA, VCE= -5V<br>f = 1.0kHz<br>BC856B / BC857B<br>330<br>Input Impedance<br>BC856A<br>hie<br>—<br>2.7<br>—<br>kΩ<br>BC856B / BC857B<br>4.5<br>Output Admittance<br>BC856A<br>hoe<br>—<br>18<br>—<br>µS<br>BC856B / BC857B<br>30<br>Reverse Voltage Transfer<br>Ratio<br>BC856A<br>hre<br>—<br>1.5x10-4<br>—<br>—<br>BC856B / BC857B<br>2x10-4<br>DC Current Gain (Note 9)<br>BC856A<br>hFE<br>125<br>180<br>250<br>—<br>IC= -2.0mA, VCE= -5V<br>BC856B / BC857B<br>220<br>290<br>475<br>Collector-Emitter Saturation Voltage (Note 9)<br>VCE(sat)<br>—<br>-75<br>-300<br>mV<br>IC= -10mA, IB= -0.5mA<br>-250<br>-650<br>IC= -100mA, IB= -5.0mA<br>Base-Emitter Turn-On Voltage (Note 9)<br>VBE(on)<br>-600<br>-650<br>-750<br>mV<br>IC = -2mA, VCE= -5V<br>—<br>—<br>-820<br>IC = -10mA, VCE= -5V<br>Base-Emitter Saturation Voltage (Note 9)<br>VBE(sat)<br>—<br>-700<br>—<br>mV<br>IC = -10mA, IB= -0.5mA<br>-850<br>-1100<br>IC = -100mA, IB= -5mA<br>Output Capacitance<br>Cobo<br>—<br>3<br>—<br>pF<br>VCB= -10V, f = 1.0MHz<br>Transition Frequency<br>fT<br>100<br>200<br>—<br>MHz<br>VCE= -5V, IC= -10mA,<br>f = 100MHz<br>Noise Figure<br>NF<br>—<br>2<br>10<br>dB<br>VCE= -5V, IC= -200µA<br>RS= 2kΩ, f = 1kHz<br>∆f = 200Hz<br>~~a~~<br>~~a~~<br>~~cs ee~~<br>~~ee~~<br>~~ces~~<br>~~ee ee ee~~<br>~~a~~<br>~~ee~~<br>~~ee ce ee~~<br>~~a~~<br>~~ces Oe~~<br>~~ee eee~~<br>~~CC~~<br>~~a cere ee~~<br>~~a ce ee~~<br>~~a cers ee~~<br>~~a ce ee~~<br>~~a cs~~<br>~~eee ee ee~~<br>~~a~~<br>~~cre ee eee~~<br>~~ae~~<br>~~ces ee ee eee~~<br>~~a~~<br>~~ee cr ee eee~~<br>~~a~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|||||||||| ||**Characteristic**<br>~~a~~<br>~~cs~~|||**Symbol**<br>~~a~~<br>~~ee~~|**Min**<br>~~a~~<br>~~ee~~|**Typ**<br>~~a~~<br>~~ee~~|**Max**<br>~~a~~<br>~~ee~~|**Unit**<br>~~a~~<br>~~ee~~|**Test Condition**<br>~~a~~| ||Collector-Base Breakdown Voltage<br>~~a~~||BC856<br>~~a~~<br>~~cs~~|BVCBO<br>~~a~~<br>~~ee~~<br>~~ee~~|-80<br>~~a~~<br>~~ee~~|—<br>~~a~~<br>~~ee~~<br>~~ee~~|—<br>~~a~~<br>~~ee~~<br>~~ee~~|V<br>~~a~~<br>~~ee~~<br>~~ee~~|IC= -10µA<br>~~a~~| ||||BC857<br>~~a~~<br>~~cs~~||-50<br>~~a~~<br>~~ee~~<br>~~ee~~||||| ||Collector-Emitter Breakdown Voltage<br>(Note 9)<br>~~ces~~||BC856<br>~~cs ~~<br>~~ces~~|BVCEO<br> ~~ee~~<br>~~ces~~<br>~~ee~~|-65<br>~~ee~~<br>~~ces~~<br>~~ee~~|—<br>~~ee~~<br>~~ces~~<br>~~ee~~|—<br>~~ee~~<br>~~ces~~<br>~~ee~~|V<br>~~ee~~<br>~~ces~~<br>~~ee~~|IC= -10mA<br>~~ces~~| ||||BC857<br>~~ces~~||-45<br>~~ces~~<br>~~ee~~||||| ||Emitter-Base Breakdown Voltage<br>~~a~~|||BVEBO<br>~~ee~~<br>~~a~~<br>~~ee~~|-5<br>~~ee ~~<br>~~a~~<br>~~ee~~|—<br> ~~ee~~<br>~~a~~<br>~~ee~~|—<br>~~ee ~~<br>~~a~~<br>~~ce~~|V<br> ~~ee~~<br>~~a~~<br>~~ce ee~~|IE = -1µA<br>~~a~~<br>~~ee~~| ||Collector Cutoff Current<br>~~ee~~<br>~~ces~~|||ICBO<br>~~ee~~<br>~~ee~~<br>~~Oe~~|—<br>~~ee~~<br>~~ee~~|—<br>~~ee~~<br>~~ee~~<br>~~ee~~|-15<br>~~ee~~<br>~~ce~~|nA<br>~~ee~~<br>~~ce ee~~|VCB= -30V<br>~~ee~~<br>~~ee~~| ||||||||-4<br>~~ee~~<br>~~ce~~<br>~~ee~~|µA<br>~~ee~~<br>~~ce ee~~<br>~~ee~~|VCB= -30V, TJ= +150°C<br>~~ee~~<br>~~ee~~<br>~~eee~~| ||Collector Emitter Cutoff Current<br>~~a~~||BC856<br>~~a~~<br>~~ces~~|ICES<br>~~ee~~<br>~~a~~<br>~~Oe~~|—<br>~~ee~~<br>~~a~~|—<br>~~ee ~~<br>~~a~~<br>~~ee~~|-15<br> ~~ce~~<br>~~a~~<br>~~ee~~|nA<br>~~ce ee~~<br>~~a~~<br>~~ee~~|VCE= -80V<br>~~ee~~<br>~~a~~<br>~~eee~~| ||||BC857<br>~~a~~<br>~~ces~~||||-15<br>~~a~~<br>~~ee~~||VCE= -50V<br>~~a~~<br>~~eee~~| ||Emitter-Base Cutoff Current<br>~~ces ~~<br>~~CC~~<br>~~acere~~|||IEBO<br> ~~Oe~~<br>~~CC~~<br>|—<br>~~CC~~<br>~~ee~~|—<br>~~ee~~<br>~~CC~~<br>~~ee~~|-100<br>~~ee~~<br>~~CC~~<br>~~ee~~|nA<br>~~ee ~~<br>~~CC~~<br>~~ee~~|VEB= -5V<br> ~~eee~~<br>~~CC~~| ||Small Signal Current Gain<br>~~a~~<br>~~a~~|BC856A<br>~~cere~~||hfe<br><br>~~ee~~|—<br>~~ee~~<br>~~ee~~|200<br>~~ee~~|—<br>~~ee~~<br>~~ee~~|—<br>~~ee~~<br>~~ee~~|IC= -2.0mA, VCE= -5V<br>f = 1.0kHz| |||BC856B / BC857B<br>~~cere~~<br>~~ce ee~~||||330<br>~~ee~~<br>~~ee~~|||| ||Input Impedance<br>~~a ~~<br>~~a~~<br>~~a~~|BC856A<br> ~~cere ~~<br>~~ce ee~~||hie<br> <br>~~ee~~<br>|—<br> ~~ee~~<br>~~ee~~<br>~~ee~~|2.7<br>~~ee~~<br>~~ee~~|—<br>~~ee~~<br>~~ee~~<br>~~ee~~|kΩ<br>~~ee~~<br>~~ee~~<br>~~ee~~|| |||BC856B / BC857B<br>~~ce ee~~<br>~~cers~~||||4.5<br>~~ee~~<br>~~ee~~|||| ||Output Admittance<br>~~a ~~<br>~~a~~<br>~~a~~|BC856A<br> ~~ce ee~~<br>~~cers~~||hoe<br>~~ee~~<br><br>~~ee~~|—<br>~~ee~~<br>~~ee~~<br>~~ee~~|18<br>~~ee~~<br>~~ee~~|—<br>~~ee~~<br>~~ee~~<br>~~ee~~|µS<br>~~ee~~<br>~~ee~~<br>~~ee~~|| |||BC856B / BC857B<br>~~cers~~<br>~~ce ee~~||||30<br>~~ee~~<br>~~ee~~|||| ||Reverse Voltage Transfer<br>Ratio<br>~~a ~~<br>~~a~~<br>~~a cs~~|BC856A<br> ~~cers ~~<br>~~ce ee~~||hre<br> <br>~~ee~~<br>~~eee~~|—<br> ~~ee~~<br>~~ee~~<br>~~eee~~|1.5x10-4<br>~~ee~~<br>~~ee~~|—<br>~~ee~~<br>~~ee~~<br>~~ee~~|—<br>~~ee~~<br>~~ee~~<br>~~ee~~|| |||BC856B / BC857B<br>~~ce ee~~<br>~~cs~~||||2x10-4<br>~~ee~~<br>~~ee~~|||| ||DC Current Gain (Note 9)<br>~~a ~~<br>~~a cs~~|BC856A<br> ~~ce ee~~<br>~~cs~~||hFE<br>~~ee~~<br>~~eee~~|125<br>~~ee~~<br>~~eee~~|180<br>~~ee~~<br>~~ee~~|250<br>~~ee~~<br>~~ee~~|—<br>~~ee~~<br>~~ee~~<br>~~ee~~|IC= -2.0mA, VCE= -5V<br>~~eee~~| |||BC856B / BC857B<br>~~cs~~|||220<br>~~eee~~<br>~~cre~~|290<br>~~ee~~<br>~~cre~~|475<br>~~ee~~<br>~~ee~~||| ||Collector-Emitter Saturation Voltage (Note 9)<br>~~a cs~~<br>~~a~~|||VCE(sat)<br>~~eee~~<br>~~a~~<br>~~ces~~|—<br>~~eee ~~<br>~~a~~<br>~~cre~~<br>~~ces~~|-75<br> ~~ee ~~<br>~~a~~<br>~~cre~~|-300<br> ~~ee~~<br>~~a~~<br>~~ee~~|mV<br>~~ee~~<br>~~a~~<br>~~ee~~<br>~~ee~~|IC= -10mA, IB= -0.5mA<br>~~a~~<br>~~eee~~| |||||||-250<br>~~a~~<br>~~cre~~<br>~~ee~~|-650<br>~~a~~<br>~~ee~~<br>~~ee~~||IC= -100mA, IB= -5.0mA<br>~~a~~<br>~~eee~~<br>~~eee~~| ||Base-Emitter Turn-On Voltage (Note 9)<br>~~ae~~|||VBE(on)<br>~~ae~~<br>~~ces~~<br>~~ee~~|-600<br>~~cre~~<br>~~ae~~<br>~~ces~~|-650<br>~~cre ~~<br>~~ae~~<br>~~ee~~|-750<br> ~~ee~~<br>~~ae~~<br>~~ee~~|mV<br>~~ee ~~<br>~~ae~~<br>~~ee~~<br>~~ee~~|IC = -2mA, VCE= -5V<br> ~~eee~~<br>~~ae~~<br>~~eee~~| ||||||—<br>~~ae~~<br>~~ces~~<br>~~cr~~|—<br>~~ae~~<br>~~ee~~<br>~~cr~~|-820<br>~~ae~~<br>~~ee~~<br>~~ee~~||IC = -10mA, VCE= -5V<br>~~ae~~<br>~~eee~~<br>~~eee~~| ||Base-Emitter Saturation Voltage (Note 9)<br>~~a~~|||VBE(sat)<br>~~ces~~<br>~~a~~<br>~~ee~~|—<br>~~ces ~~<br>~~a~~<br>~~cr~~|-700<br> ~~ee ~~<br>~~a~~<br>~~cr~~|—<br> ~~ee~~<br>~~a~~<br>~~ee~~|mV<br>~~ee ~~<br>~~a~~<br>~~ee~~|IC = -10mA, IB= -0.5mA<br> ~~eee~~<br>~~a~~<br>~~eee~~| |||||||-850<br>~~a~~<br>~~cr~~|-1100<br>~~a~~<br>~~ee~~||IC = -100mA, IB= -5mA<br>~~a~~<br>~~eee~~| ||Output Capacitance<br>~~a~~|||Cobo<br>~~ee ~~<br>~~a~~|—<br> ~~cr~~<br>~~a~~|3<br>~~cr ~~<br>~~a~~|—<br> ~~ee~~<br>~~a~~|pF<br>~~ee ~~<br>~~a~~|VCB= -10V, f = 1.0MHz<br> ~~eee~~<br>~~a~~| ||Transition Frequency<br>~~ee~~|||fT<br>~~ee~~|100<br>~~ee~~<br>~~ee~~|200<br>~~ee~~<br>~~ee~~|—<br>~~ee~~|MHz<br>~~ee~~|VCE= -5V, IC= -10mA,<br>f = 100MHz<br>~~ee~~| ||Noise Figure<br>~~ee~~|||NF<br>~~ee~~|—<br>~~ee~~<br>~~ee~~|2<br>~~ee~~<br>~~ee~~|10<br>~~ee~~|dB<br>~~ee~~|VCE= -5V, IC= -200µA<br>RS= 2kΩ, f = 1kHz<br>∆f = 200Hz<br>~~ee~~| 4 of 7 **www.diodes.com** BC856AQ – BC857BQ Document number: DS42395 Rev. 1 - 2 November 2019 © Diodes Incorporated **BC856AQ – BC857BQ** ## **Typical Electrical Characteristics** (@TA = +25°C, unless otherwise specified.) **==> picture [482 x 217] intentionally omitted <==** **----- Start of picture text -----**<br> 1,000 0.5<br>TT A = 150°C = 150癈 VCE = 5V IC<br>IB = 10<br>Se a | | LITT<br>fe 0.4<br>100<br>S TTAA = 25°C = 25癈 IN 0.3 TTTTTITIET<br>T AA = = -50 癈°C<br>SE ee ee ENl 0.2 ANIM T AA = = 25 癈° C TTIMlif<br>10 TTAA = 15 = 15 0 癈°C<br>=] ae Wii<br>po|TT TT |TT| 0.1 Biliran au):|autlas<br>TTAA = -50°C = -50癈<br>1 Feea 0 NTTtion<br>1 10 100 1,000 0.1 1 10 100 1,000<br>IC, COLLECTOR CURRENT (mA) IC, COLLECTOR CURRENT (mA)<br>Figure 1 Typical DC Current Gain vs. Collector Current Figure 2 Typical Collector-Emitter Saturation Voltage<br>vs. Collector Current<br>, COLLECTOR-EMITTER<br>CE(sat)<br>V<br>, DC CURRENT GAIN<br>FE<br>h<br>CE(SAT)<br>, COLLECTOR-EMITTER<br>SATURATION VOLTAGE (V)<br>V<br>**----- End of picture text -----**<br> **==> picture [212 x 209] intentionally omitted <==** **----- Start of picture text -----**<br> 1,000<br>VCE = 5V<br>a a a Oe 0<br>pf tt<br>ete<br>100<br>eT LN<br>poTT<br>|<br>10 CCT Co|<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>**----- End of picture text -----**<br> 5 of 7 **www.diodes.com** BC856AQ – BC857BQ Document number: DS42395 Rev. 1 - 2 November 2019 © Diodes Incorporated **BC856AQ – BC857BQ** ## **Package Outline Dimensions** Please see http://www.diodes.com/package-outlines.html for the latest version. ## **SOT23** **==> picture [470 x 190] intentionally omitted <==** **----- Start of picture text -----**<br> All 7°<br>H<br>GAUGE PLANE SOT23<br>0.25<br>J Dim Min Max Typ<br>K1 1 K o-——— HR a A 0.37 0.51 0.40<br>B 1.20 1.40 1.30<br>a C 2.30 2.50 2.40<br>A M D 0.89 1.03 0.915<br>L L1 F 0.45 0.60 0.535<br>G 1.78 2.05 1.83<br>H 2.80 3.00 2.90<br>J 0.013 0.10 0.05<br>C = B == K 0.890 1.00 0.975<br>K1 0.903 1.10 1.025<br>L 0.45 0.61 0.55<br>L1 0.25 0.55 0.40<br>f= =S==<br>M 0.085 0.150 0.110<br>D<br>a 0° 8° --<br>a: F G nu All Dimensions in mm<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 fia C<br>oH<br>Pdi X X1<br>**----- End of picture text -----**<br> |**Dimensions**|**Value(in mm)**| |---|---| |**C**|2.0| |**X**|0.8| |**X1**|1.35| |**Y**|0.9| |**Y1**|2.9| 6 of 7 **www.diodes.com** BC856AQ – BC857BQ Document number: DS42395 Rev. 1 - 2 November 2019 © Diodes Incorporated **BC856AQ – BC857BQ** ## **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 © 2019, Diodes Incorporated **www.diodes.com** 7 of 7 **www.diodes.com** BC856AQ – BC857BQ Document number: DS42395 Rev. 1 - 2 November 2019 © Diodes Incorporated
Updated at June 6, 2026
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