MMBTA42
- Part number
- MMBTA42
- Manufacturer
- STMicroelectronics
- Package
- SOT-23
- Status
- Active
- Stock
- Available / RFQ
- Price
- $0.29
- Year / date code
- 2025
View on SJ Chip · Request a quote
Product Overview
MMBTA42 (STMicroelectronics, SOT-23) — Bipolar Transistors - BJT NPN General Purpose
Technical Specifications
- Part Number
- MMBTA42
- Manufacturer
- STMicroelectronics
- Series
- MMBTA42
- Package / Case
- SOT-23
- Package Family
- SOT
- Pin / Ball Count (from marking)
- 23
- Lifecycle Status
- Active
- Category
- Discrete Semiconductor
- Mounting Type
- Surface Mount (SMT)
Electrical Characteristics
- Device Class
- Transistor / MOSFET / diode class discrete
- Ratings
- Confirm VDS/VCEO, ID, and RDS(on) / Vf from the datasheet
- Package Constraint
- SOT-23 thermal and pinout must match the PCB
Package Information
- Package
- SOT-23
- Package Family
- SOT
- Mounting
- Surface Mount (SMT)
- Terminal Count (parsed)
- 23
- Outline Note
- Package marking on this page is for sourcing reference. Confirm body size, pitch, and land pattern from the manufacturer datasheet before layout.
Applications
MMBTA42 is used for switching, protection, or signal discrete roles on power and interface boards. Match voltage/current ratings and the SOT-23 footprint to the existing layout.
Procurement notes
Confirm the full ordering code, package (SOT-23), and quantity on RFQ. SJ Chip replies with stock, condition, and lead time. Nearby MPNs are for evaluation only.
Potential Alternatives (SOT-23)
- TL1431ACL3T · SOT-23
- BAT54SFILM · SOT-23
- MMBD4148SE · SOT-23
- ESDCAN24-2BLY · SOT-23
- BAS70-04 · SOT-23
- ESDCAN01-2BLY · SOT-23
- BAS20 · SOT-23
- MMBTA92 · SOT-23
- 2STR1230 · SOT-23
- 2STR1215 · SOT-23
- TSV911AIYLT · SOT-23
- BSS64 · SOT-23
FAQ
Where to buy MMBTA42?
You can request MMBTA42 from SJ Chip via the RFQ form on this page or the site-wide RFQ. We confirm manufacturer (STMicroelectronics), package, quantity, and lead time on the quotation.
Is MMBTA42 available?
Listed inventory shows 180,000 pcs. Lot, date code, and shippable quantity are confirmed on RFQ — treat the listing as availability to quote, not a guaranteed cart ship.
What is the package of MMBTA42?
The sourcing listing shows package SOT-23. Always verify body size, pitch, and land pattern against the STMicroelectronics datasheet before PCB layout.
What are alternatives to MMBTA42?
Potential alternatives include TL1431ACL3T, BAT54SFILM, MMBD4148SE and other same-series or same-package listings — all require datasheet and pinout checks. These are similar stock for evaluation, not automatic drop-in replacements.
Sourcing information
| Part Number | MMBTA42 |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23 |
| Description | Bipolar Transistors - BJT NPN General Purpose |
| Availability | Listed inventory: 180,000 pcs — confirm lot, date code, and quantity on RFQ |
| RFQ | Submit the full part number and quantity through the RFQ form |
| Lead Time | Lead time is confirmed on the quotation after RFQ. In-stock conventional lots often ship in 3–5 working days from Hong Kong; special, allocation, or obsolete lines are quoted separately. |
| Condition | Condition is stated on the quotation/PI (new, surplus, or EOL). Lots are inspected before shipment. |