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Part Details for BC857A by Nexperia
Results Overview of BC857A by Nexperia
- Distributor Offerings: (0 listings)
- Number of FFF Equivalents: (10 replacements)
- CAD Models: (Available)
- 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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BC857A Information
BC857A by Nexperia 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.
Part Details for BC857A
BC857A CAD Models
BC857A Part Data Attributes
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BC857A
Nexperia
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Datasheet
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BC857A
Nexperia
Small Signal Bipolar Transistor
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| Rohs Code | Yes | |
| Part Life Cycle Code | Active | |
| Ihs Manufacturer | NEXPERIA | |
| Reach Compliance Code | compliant | |
| ECCN Code | EAR99 | |
| Date Of Intro | 1985-10-16 | |
| Samacsys Manufacturer | Nexperia | |
| Collector Current-Max (IC) | 0.1 A | |
| Collector-Emitter Voltage-Max | 45 V | |
| Configuration | SINGLE | |
| DC Current Gain-Min (hFE) | 125 | |
| 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 | |
| Operating Temperature-Min | -65 °C | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Shape | RECTANGULAR | |
| Package Style | SMALL OUTLINE | |
| Peak Reflow Temperature (Cel) | 260 | |
| Polarity/Channel Type | PNP | |
| Surface Mount | YES | |
| Terminal Finish | TIN | |
| 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 BC857A
This table gives cross-reference parts and alternative options found for BC857A. 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 BC857A, 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 |
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| BC857ATA | Diodes Incorporated | Check for Price | Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, PNP, Silicon | BC857A vs BC857ATA |
| BC857AT/R | NXP Semiconductors | Check for Price | TRANSISTOR 100 mA, 45 V, PNP, Si, SMALL SIGNAL TRANSISTOR, TO-236AB, PLASTIC, SST3, SMD, 3 PIN, BIP General Purpose Small Signal | BC857A vs BC857AT/R |
| BC857AL99Z | Fairchild Semiconductor Corporation | Check for Price | Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, PNP, Silicon | BC857A vs BC857AL99Z |
| BC857AL | Motorola Semiconductor Products | Check for Price | Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, PNP, Silicon, TO-236AB, CASE 318-07, 3 PIN | BC857A vs BC857AL |
| BC857ALT1 | Motorola Mobility LLC | Check for Price | 100mA, 45V, PNP, Si, SMALL SIGNAL TRANSISTOR, TO-236AB | BC857A vs BC857ALT1 |
| BC857A-TAPE-7 | NXP Semiconductors | Check for Price | TRANSISTOR 100 mA, 45 V, PNP, Si, SMALL SIGNAL TRANSISTOR, BIP General Purpose Small Signal | BC857A vs BC857A-TAPE-7 |
| BC857ATR13LEADFREE | Central Semiconductor Corp | Check for Price | Small Signal Bipolar Transistor, 45V V(BR)CEO, 1-Element, PNP, Silicon, | BC857A vs BC857ATR13LEADFREE |
| BC857A | Zetex / Diodes Inc | Check for Price | Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, PNP, Silicon, SOT-23, 3 PIN | BC857A vs BC857A |
| BC857ALT1 | Motorola Semiconductor Products | Check for Price | Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, PNP, Silicon, TO-236AB | BC857A vs BC857ALT1 |
| BC857ALT1 | 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 | BC857A vs BC857ALT1 |
BC857A Frequently Asked Questions (FAQ)
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The maximum operating temperature range for the BC857A is -40°C to 150°C, but it's recommended to operate within -40°C to 125°C for optimal performance and reliability.
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To ensure the BC857A is properly biased for linear operation, you should ensure the base-emitter voltage (VBE) is between 0.6V to 0.8V, and the collector-emitter voltage (VCE) is at least 1V higher than the base-emitter voltage. Additionally, the collector current should be limited to the recommended maximum value to prevent overheating.
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The recommended storage temperature range for the BC857A is -40°C to 150°C, but it's recommended to store the devices in a dry, cool place away from direct sunlight and moisture to prevent degradation.
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Yes, the BC857A 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)). For switching applications, it's recommended to use a transistor with a higher current gain and lower saturation voltage, such as the BC817 or BC327.
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To prevent thermal runaway when using the BC857A, ensure the device is properly heat-sinked, and the collector current is limited to the recommended maximum value. Additionally, avoid operating the device at high temperatures or with high voltage swings, as this can cause the device to enter thermal runaway.