Part Details for BC857B by NXP Semiconductors
Results Overview of BC857B by NXP Semiconductors
- Distributor Offerings: (8 listings)
- Number of FFF Equivalents: (6 replacements)
- CAD Models: (Request Part)
- Number of Functional Equivalents: (10 options)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
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BC857B Information
BC857B by NXP Semiconductors is a Small Signal Bipolar Transistor.
Small Signal Bipolar Transistors are under the broader part category of Transistors.
A transistor is a small semiconductor device used to amplify, control, or create electrical signals. When selecting a transistor, factors such as voltage, current rating, gain, and power dissipation must be considered, with common types. Read more about Transistors on our Transistors part category page.
Price & Stock for BC857B
| Part # | Distributor | Description | Stock | Price | Buy | |
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Bristol Electronics | 33682 |
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RFQ | ||
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Bristol Electronics | 4867 |
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RFQ | ||
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Bristol Electronics | 3000 |
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RFQ | ||
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Quest Components | 100 MA, 45 V, PNP, SI, SMALL SIGNAL TRANSISTOR | 26945 |
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$0.0240 / $0.1200 | Buy Now |
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Quest Components | 100 MA, 45 V, PNP, SI, SMALL SIGNAL TRANSISTOR | 8079 |
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$0.0216 / $0.0480 | Buy Now |
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Quest Components | 100 MA, 45 V, PNP, SI, SMALL SIGNAL TRANSISTOR | 3893 |
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$0.7500 / $2.5000 | Buy Now |
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ComSIT USA | 65 V, 100 mA PNP general-purpose transistor Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, PNP, Silicon, TO-236AB ECCN: EAR99 RoHS: Compliant |
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RFQ | |
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Velocity Electronics | Our Stock | 336 |
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RFQ |
Part Details for BC857B
BC857B CAD Models
BC857B Part Data Attributes
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BC857B
NXP Semiconductors
Buy Now
Datasheet
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Compare Parts:
BC857B
NXP Semiconductors
TRANSISTOR 100 mA, 45 V, PNP, Si, SMALL SIGNAL TRANSISTOR, TO-236AB, PLASTIC PACKAGE-3, BIP General Purpose Small Signal
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| Pbfree Code | Yes | |
| Rohs Code | Yes | |
| Part Life Cycle Code | Transferred | |
| Ihs Manufacturer | NXP SEMICONDUCTORS | |
| Part Package Code | SOT-23 | |
| Package Description | PLASTIC PACKAGE-3 | |
| Pin Count | 3 | |
| Reach Compliance Code | compliant | |
| ECCN Code | EAR99 | |
| Samacsys Manufacturer | NXP | |
| Collector Current-Max (IC) | 0.1 A | |
| Collector-Emitter Voltage-Max | 45 V | |
| Configuration | SINGLE | |
| DC Current Gain-Min (hFE) | 220 | |
| JEDEC-95 Code | TO-236AB | |
| JESD-30 Code | R-PDSO-G3 | |
| JESD-609 Code | e3 | |
| Moisture Sensitivity Level | 1 | |
| Number of Elements | 1 | |
| Number of Terminals | 3 | |
| Operating Temperature-Max | 150 °C | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Shape | RECTANGULAR | |
| Package Style | SMALL OUTLINE | |
| Peak Reflow Temperature (Cel) | 260 | |
| Polarity/Channel Type | PNP | |
| Power Dissipation-Max (Abs) | 0.25 W | |
| Qualification Status | Not Qualified | |
| Surface Mount | YES | |
| Terminal Finish | Tin (Sn) | |
| Terminal Form | GULL WING | |
| Terminal Position | DUAL | |
| Time@Peak Reflow Temperature-Max (s) | 30 | |
| Transistor Application | SWITCHING | |
| Transistor Element Material | SILICON | |
| Transition Frequency-Nom (fT) | 100 MHz | |
| VCEsat-Max | 0.65 V |
Alternate Parts for BC857B
This table gives cross-reference parts and alternative options found for BC857B. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of BC857B, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| BC857B-13-F | Diodes Incorporated | Check for Price | Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, PNP, Silicon, GREEN, PLASTIC PACKAGE-3 | BC857B vs BC857B-13-F |
| BC857B,215 | Nexperia | $0.0052 | vp_BC856_BC857_BC858 - 65 V, 100 mA PNP general-purpose transistors@en-us TO-236 3-Pin | BC857B vs BC857B,215 |
| BC857B | STMicroelectronics | Check for Price | 100mA, 45V, PNP, Si, SMALL SIGNAL TRANSISTOR | BC857B vs BC857B |
| BC857BLT3G | onsemi | Check for Price | PNP Bipolar Transistor, SOT-23 (TO-236) 3 LEAD, 10000-REEL | BC857B vs BC857BLT3G |
| BC857B | Infineon Technologies AG | Check for Price | 100mA, 45V, PNP, Si, SMALL SIGNAL TRANSISTOR, ROHS COMPLIANT PACKAGE-3 | BC857B vs BC857B |
| BC857BLT1-TP | Micro Commercial Components | Check for Price | Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, PNP, Silicon, PLASTIC PACKAGE-3 | BC857B vs BC857BLT1-TP |
BC857B Frequently Asked Questions (FAQ)
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The maximum operating temperature range for the BC857B is -40°C to 150°C.
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Yes, the BC857B can be used as a switch, but it's not recommended due to its relatively low current gain (hFE) and high saturation voltage (VCE(sat)). It's better suited for amplifier applications.
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The choice of resistor values depends on the specific application and the desired current and voltage levels. A general rule of thumb is to choose a base resistor (Rb) that limits the base current to 1/10th of the maximum allowed current, and a collector resistor (Rc) that sets the desired collector current.
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The BC857B has a transition frequency (fT) of 100 MHz, making it suitable for low- to medium-frequency applications. However, it may not be the best choice for high-frequency applications above 100 MHz.
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Yes, the BC857B can be used in a Darlington pair configuration to increase the current gain and improve the overall performance of the circuit.