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500mA, 300V, NPN, Si, SMALL SIGNAL TRANSISTOR, MINIATURE, PLASTIC, SOT-23, 3 PIN
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.
MMBTA42 by STMicroelectronics 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 # | Distributor | Description | Stock | Price | Buy | |
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DISTI #
70390352
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RS | MMBTA42 NPN High Voltage Bipolar Transistor, 0.5 A, 300 V, 3-Pin SOT-23 Min Qty: 50 Package Multiple: 1 Container: Bulk | 0 |
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$0.0800 | RFQ |
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Bristol Electronics | Min Qty: 75 | 300 |
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$0.0450 / $0.0675 | Buy Now |
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Quest Components | TRANSISTOR,BJT,NPN,300V V(BR)CEO,500MA I(C),SOT-23 | 2350 |
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$0.1044 / $0.3480 | Buy Now |
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Quest Components | TRANSISTOR,BJT,NPN,300V V(BR)CEO,500MA I(C),SOT-23 | 240 |
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$0.0600 / $0.0900 | Buy Now |
DISTI #
MMBTA42
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Avnet Silica | Trans GP BJT NPN 300V 05A 3Pin SOT23 TR (Alt: MMBTA42) RoHS: Compliant Min Qty: 24000 Package Multiple: 3000 Lead time: 143 Weeks, 0 Days | Silica - 0 |
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Buy Now | |
DISTI #
MMBTA42
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EBV Elektronik | Trans GP BJT NPN 300V 05A 3Pin SOT23 TR (Alt: MMBTA42) RoHS: Compliant Min Qty: 3000 Package Multiple: 3000 Lead time: 143 Weeks, 0 Days | EBV - 0 |
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Buy Now |
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MMBTA42
STMicroelectronics
Buy Now
Datasheet
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Compare Parts:
MMBTA42
STMicroelectronics
500mA, 300V, NPN, Si, SMALL SIGNAL TRANSISTOR, MINIATURE, PLASTIC, SOT-23, 3 PIN
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Pbfree Code | Yes | |
Rohs Code | Yes | |
Part Life Cycle Code | Obsolete | |
Ihs Manufacturer | STMICROELECTRONICS | |
Part Package Code | SOT-23 | |
Package Description | 3 PIN | |
Pin Count | 3 | |
Reach Compliance Code | compliant | |
ECCN Code | EAR99 | |
Samacsys Manufacturer | STMicroelectronics | |
Collector Current-Max (IC) | 0.5 A | |
Collector-Emitter Voltage-Max | 300 V | |
Configuration | SINGLE | |
DC Current Gain-Min (hFE) | 40 | |
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 | NPN | |
Power Dissipation-Max (Abs) | 0.35 W | |
Qualification Status | Not Qualified | |
Surface Mount | YES | |
Terminal Finish | Matte 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) | 50 MHz |
This table gives cross-reference parts and alternative options found for MMBTA42. 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 MMBTA42, 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 |
---|---|---|---|---|
MMBTA42 | Texas Instruments | Check for Price | 500mA, 300V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-236AB | MMBTA42 vs MMBTA42 |
SMBTA42 | Infineon Technologies AG | Check for Price | Small Signal Bipolar Transistor, 0.5A I(C), 300V V(BR)CEO, 1-Element, NPN, Silicon, ROHS COMPLIANT PACKAGE-3 | MMBTA42 vs SMBTA42 |
MMBTA42 | Galaxy Semi-Conductor Co Ltd | Check for Price | Transistor, | MMBTA42 vs MMBTA42 |
PMBTA42 | YAGEO Corporation | Check for Price | Small Signal Bipolar Transistor, 0.5A I(C), 300V V(BR)CEO, 1-Element, NPN, Silicon, | MMBTA42 vs PMBTA42 |
MMBTA42_R2_00001 | PanJit Semiconductor | Check for Price | Small Signal Bipolar Transistor, | MMBTA42 vs MMBTA42_R2_00001 |
The MMBTA42 can operate safely between -55°C and 150°C, but the recommended operating temperature range is -40°C to 125°C.
To ensure proper biasing, the base-emitter voltage (VBE) should be between 0.6V and 0.8V, and the collector-emitter voltage (VCE) should be at least 1V higher than the base-emitter voltage.
The maximum collector current (IC) rating for the MMBTA42 is 500mA, and the maximum peak current rating is 1A.
To prevent electrostatic discharge (ESD) damage, handle the MMBTA42 by the body, avoid touching the pins, and use an anti-static wrist strap or mat when handling the device.
Yes, the MMBTA42 can be used in switching applications, but it's essential to ensure the transistor is properly biased and the switching frequency is within the recommended range (up to 100 kHz).