MMBTA42Alternatives & Equivalent Parts
About MMBTA42
MMBTA42 is a Transistor BJT NPN component manufactured by STMicroelectronics. It comes in a SOT23 (3-Pin) package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Get one quote covering all 5 alternatives for MMBTA42 — response within 24 hours.
Specification Comparison
| Parameter | MMBTA42Source | MMBTA42LT1G | SN7447AN | PIC16F628A-I/P | 61201021621 | 43650-0218 |
|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | ON Semiconductor | Texas Instruments | Microchip | Würth Elektronik | Molex |
| Package Type | SOT23 (3-Pin) | SOT23 (3-Pin) | — | Dual-In-Line Packages | Header, Shrouded - Straight PTH Box | Other |
| Pin Count | 3 | 3 | — | 18 | 10 | 4 |
| Temperature Range | ~ 150.0°C | -55.0°C ~ 150.0°C | — | -40.0°C ~ 85.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 105.0°C |
| Price | $0.0258 | $0.0153 | $1.7223 | $2.1900 | $0.2290 | $0.4590 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | OBSOLETE | ACTIVE | — | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | ||||||
| Pbfree Code | Yes | Yes | — | Yes | — | Yes |
| YTEOL | 0 | 7 | — | 8 | 15 | 8 |
| Collector Current-Max (IC) | 0.5 A | 0.5 A | — | — | — | — |
| Collector-Emitter Voltage-Max | 300 V | 300 V | — | — | — | — |
| Configuration | SINGLE | SINGLE | — | — | — | — |
| DC Current Gain-Min (hFE) | 40 | 40 | — | — | — | — |
| JESD-30 Code | R-PDSO-G3 | R-PDSO-G3 | — | R-PDIP-T18 | — | — |
| JESD-609 Code | e3 | e3 | — | e3 | e4 | e3 |
| Number of Elements | 1 | 1 | — | — | — | — |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | — | PLASTIC/EPOXY | — | — |
| Package Shape | RECTANGULAR | RECTANGULAR | — | RECTANGULAR | — | — |
| Package Style | SMALL OUTLINE | SMALL OUTLINE | — | IN-LINE | — | — |
| Peak Reflow Temperature (Cel) | 260 | 260 | — | — | — | — |
| Polarity/Channel Type | NPN | NPN | — | — | — | — |
| Power Dissipation-Max (Abs) | 0.35 W | 0.3 W | — | — | — | — |
| Qualification Status | Not Qualified | Not Qualified | — | Not Qualified | — | — |
| Surface Mount | YES | YES | — | NO | — | — |
| Terminal Finish | Matte Tin (Sn) | Matte Tin (Sn) - annealed | — | Matte Tin (Sn) | — | — |
| Terminal Form | GULL WING | GULL WING | — | THROUGH-HOLE | — | — |
| Terminal Position | DUAL | DUAL | — | DUAL | — | — |
| Time@Peak Reflow Temperature-Max (s) | 30 | 30 | — | — | — | — |
| Transistor Application | SWITCHING | — | — | — | — | — |
| Transistor Element Material | SILICON | SILICON | — | — | — | — |
| Transition Frequency-Nom (fT) | 50 MHz | 50 MHz | — | — | — | — |
| ## MMBTA42 Alternates Showing results | Image | — | — | — | — | — |
| Manufacturer Package Code | — | 318 | — | PDIP-18 | — | — |
| JEDEC-95 Code | — | TO-236AB | — | — | — | — |
| Factory Lead Time | — | — | — | 6 Weeks | — | 7 Weeks |
| Has ADC | — | — | — | NO | — | — |
| Bit Size | — | — | — | 8 | — | — |
| Boundary Scan | — | — | — | NO | — | — |
| CPU Family | — | — | — | PIC16 | — | — |
| Clock Frequency-Max | — | — | — | 20 MHz | — | — |
| DAC Channels | — | — | — | NO | — | — |
| DMA Channels | — | — | — | NO | — | — |
| Format | — | — | — | FIXED POINT | — | — |
| Integrated Cache | — | — | — | NO | — | — |
| Low Power Mode | — | — | — | YES | — | — |
| Number of External Interrupts | — | — | — | 1 | — | — |
| Number of I/O Lines | — | — | — | 16 | — | — |
| Number of Timers | — | — | — | 3 | — | — |
| On Chip Program ROM Width | — | — | — | 14 | — | — |
| PWM Channels | — | — | — | YES | — | — |
| Package Equivalence Code | — | — | — | DIP18,.3 | — | — |
| RAM (bytes) | — | — | — | 224 | — | — |
| ROM (words) | — | — | — | 2048 | — | — |
| ROM Programmability | — | — | — | FLASH | — | — |
| Screening Level | — | — | — | TS 16949 | — | — |
| Speed | — | — | — | 20 MHz | — | — |
| Supply Current-Max | — | — | — | 3.5 mA | — | — |
| Supply Voltage-Max | — | — | — | 5.5 V | — | — |
| Supply Voltage-Min | — | — | — | 3 V | — | — |
| Supply Voltage-Nom | — | — | — | 5 V | — | — |
| Technology | — | — | — | CMOS | — | — |
| Temperature Grade | — | — | — | INDUSTRIAL | — | — |
| Terminal Pitch | — | — | — | 2.54 mm | 2.54 mm | 3 mm |
| uPs/uCs/Peripheral ICs Type | — | — | — | MICROCONTROLLER, RISC | — | — |
| ## PIC16F628A-I/P Alternates Showing results | — | — | — | Image | — | — |
| Body Breadth | — | — | — | — | 0.358 inch | 0.219 inch |
| Body Depth | — | — | — | — | 0.358 inch | 0.39 inch |
| Body Length | — | — | — | — | 0.802 inch | 0.38 inch |
| Body/Shell Style | — | — | — | — | RECEPTACLE | PLUG |
| Connector Type | — | — | — | — | BOARD CONNECTOR | RECTANGULAR POWER CONNECTOR |
| Contact Finish Mating | — | — | — | — | NOT APPLICABLE | NOT SPECIFIED |
| Contact Finish Termination | — | — | — | — | Gold (Au) - with Nickel (Ni) barrier | Matte Tin (Sn) - reflowed over Nickel (Ni) barrier |
| Contact Gender | — | — | — | — | MALE | MALE |
| Contact Material | — | — | — | — | COPPER ALLOY | BRASS |
| Contact Pattern | — | — | — | — | RECTANGULAR | RECTANGULAR |
| Contact Resistance | — | — | — | — | 20 mΩ | 10 mΩ |
| Contact Style | — | — | — | — | SQ PIN-SKT | SQ PIN-SKT |
| DIN Conformance | — | — | — | — | NO | NO |
| Dielectric Withstanding Voltage | — | — | — | — | 500VAC V | 1500VAC V |
| Filter Feature | — | — | — | — | NO | NO |
| IEC Conformance | — | — | — | — | NO | NO |
| Insulation Resistance | — | — | — | — | 1000000000 Ω | 1000000000 Ω |
| Insulator Color | — | — | — | — | BLACK | BLACK |
| Insulator Material | — | — | — | — | POLYBUTYLENE TEREPHTHALATE | GLASS FILLED LIQUID CRYSTAL POLYMER |
| MIL Conformance | — | — | — | — | NO | NO |
| Mating Contact Pitch | — | — | — | — | 0.1 inch | 0.118 inch |
| Mating Contact Row Spacing | — | — | — | — | 0.1 inch | — |
| Mixed Contacts | — | — | — | — | NO | NO |
| Mounting Option 1 | — | — | — | — | LOCKING | — |
| Mounting Style | — | — | — | — | STRAIGHT | STRAIGHT |
| Mounting Type | — | — | — | — | BOARD | BOARD |
| Number Of Connectors | — | — | — | — | ONE | ONE |
| Number Of PCB Rows | — | — | — | — | 2 | 1 |
| Number of Rows Loaded | — | — | — | — | 2 | 1 |
| Option | — | — | — | — | GENERAL PURPOSE | GENERAL PURPOSE |
| PCB Contact Pattern | — | — | — | — | RECTANGULAR | RECTANGULAR |
| PCB Contact Row Spacing | — | — | — | — | 2.54 mm | — |
| Polarization Key | — | — | — | — | POLARIZED HOUSING | POLARIZED HOUSING |
| Rated Current (Signal) | — | — | — | — | 3 A | 8.5 A |
| Reference Standard | — | — | — | — | UL | CSA; UL |
| Terminal Length | — | — | — | — | 0.118 inch | 0.125 inch |
| Termination Type | — | — | — | — | SOLDER | SOLDER |
| Total Number of Contacts | — | — | — | — | 10 | 2 |
| UL Flammability Code | — | — | — | — | 94V-0 | 94V-0 |
| Board Mounting Option | — | — | — | — | — | SOLDERABLE RETENTION CLIPS |
| Durability | — | — | — | — | — | 30 Cycles |
| Empty Shell | — | — | — | — | — | NO |
| Mating Information | — | — | — | — | — | MULTIPLE MATING PARTS AVAILABLE |
| Plating Thickness | — | — | — | — | — | 100u inch |
| Withdrawl Force-Min | — | — | — | — | — | 3.0024 N |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Need pricing on these alternatives?
Get one quote covering all 5 alternatives for MMBTA42 — response within 24 hours.
Quick Links
onsemi Small Signal Bipolar Transistor, 0.5A I(C), 300V V(BR)CEO, 1-Element, NPN, Silicon, TO-236AB
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Why Look for Alternatives?
Finding alternatives for MMBTA42 is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating MMBTA42 replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
Can't Find What You Need?
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FAQ
What is equivalent to MMBTA42?
Known equivalents for MMBTA42 include MMBTA42LT1G, SN7447AN, PIC16F628A-I/P. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of MMBTA42?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify MMBTA42 alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.