MMBTA42 STMicroelectronics Transistor BJT NPN (SOT23 (3-Pin)) In Stock
STMicroelectronics MMBTA42 NPN High Voltage Bipolar Transistor, 500 mA, 300 V, 3-Pin SOT-23
- Manufacturer
- STMicroelectronics
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- MMBTA42 Datasheet PDF
- Category
- Transistor BJT NPN
- Price
- From $0.0258(MOQ 100)
- Temp Range
- ?°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Collector Current-Max (IC) | 0.5A |
| Collector-Emitter Voltage-Max | 300V |
| Configuration | SINGLE |
| DC Current Gain-Min (hFE) | 40 |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| 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) | 0.35W |
| 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) | 50MHz |
| ## MMBTA42 Alternates Showing results | Image |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MMBTA42:
onsemi Small Signal Bipolar Transistor, 0.5A I(C), 300V V(BR)CEO, 1-Element, NPN, Silicon, TO-236AB
suggested
suggested
suggested
suggested
Frequently Asked Questions
What is the price of MMBTA42?
MMBTA42 is priced from $0.0258 USD depending on quantity. Submit an RFQ on FindMyChip for the best current pricing from authorized China distributors.
Is MMBTA42 in stock?
MMBTA42 is listed as in stock at FindMyChip, sourced from authorized distributors, and ships worldwide with typical 3-7 business day lead time. Submit an RFQ for current quantity pricing, MOQ, and confirmed availability.
Where can I buy MMBTA42?
You can buy MMBTA42 from FindMyChip, a B2B electronic component platform sourcing from China distributors. We offer competitive pricing and low MOQ for MMBTA42 from STMicroelectronics.
What is the datasheet for MMBTA42?
The official MMBTA42 datasheet from STMicroelectronics contains full specifications including pin configuration, electrical characteristics, and application notes. Download it directly from the datasheet section above.
What package does MMBTA42 come in?
MMBTA42 is available in SOT23 (3-Pin) packaging. See the package diagram and pinout above for detailed dimensional information.
Related Guides
How to Choose 150141BS73100 for Wurth 3528 SMT LED Indicator Designs
Selection guide for 150141BS73100 and Wurth 3528 SMT LED variants covering color, drive current, package fit, optics, and sourcing.
Jul 9, 2026
How to Choose EEEFT1V101AP for SMD Aluminum Electrolytic Capacitor Designs
Selection guide for EEEFT1V101AP and related Panasonic EEE-FT SMD aluminum electrolytic capacitors covering voltage, ESR, lifetime, and sourcing.
Jul 9, 2026
How to Choose a Panasonic FT SMD Aluminum Electrolytic Capacitor for 35 V Control Rails
Selection guide for EEEFT1V101AP and related Panasonic FT/FK SMD aluminum electrolytic capacitors on 35 V and lower control rails.
Jul 8, 2026
EEEFK1E470P Design Guide for 24 V Control-Board Hold-Up
Design EEEFK1E470P into 12 V and 24 V control boards with correct voltage derating, ripple checks, layout, and sourcing alternatives.
Jul 8, 2026
Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.0424 | $4.24 |
| 500+ | $0.0305 | $15.25 |
| 1000+ | $0.0266 | $26.63 |
| 30000+ | $0.0258 | $772.80 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”