LM340T-12/HALFIn StockTexas Instruments
LM340T-12/HALF is a fixed +12V positive linear voltage regulator in TO-220-3 package. It delivers up to 1.5A output current with internal thermal and short-circuit protection. Ideal for regulated power supplies in industrial, automotive, and consumer electronics applications. In stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- LM340T-12/HALF Datasheet PDF
- Category
- Transistor
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed +12V output voltage with tight regulation accuracy
- Up to 1.5A output current capability
- Internal thermal shutdown and short-circuit protection
- TO-220-3 through-hole package for easy PCB mounting
- Compatible with standard LM7812 circuit designs
Applications
The LM340T-12/HALF is widely used in regulated DC power supply circuits where a stable +12V rail is required. It suits industrial control systems, automotive accessories, audio amplifiers, and consumer electronics that need reliable linear regulation. Its robust protection features make it a dependable choice for both bench-top and embedded power management designs.
Specifications
| YTEOL | EYTEOL |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Country of Origin |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM340T-12/HALF:
Frequently Asked Questions
What is the output voltage of the LM340T-12/HALF?
The LM340T-12/HALF provides a fixed +12V regulated output voltage. It maintains tight voltage regulation across a wide range of load currents, making it suitable for precision power supply applications in industrial and consumer electronics.
What is the maximum output current the LM340T-12/HALF can deliver?
The LM340T-12/HALF can deliver up to 1.5A of continuous output current. It includes internal thermal shutdown and short-circuit protection to prevent damage under overload conditions, ensuring reliable and safe operation in demanding applications.
What package type does the LM340T-12/HALF use and how should it be mounted?
The LM340T-12/HALF comes in a TO-220-3 through-hole package, which provides excellent heat dissipation when a heatsink is attached. It is designed for vertical PCB mounting and is compatible with standard LM7812 footprints, simplifying drop-in replacement in existing designs.
What are typical applications for the LM340T-12/HALF?
This regulator is commonly used in regulated DC power supplies, industrial control boards, automotive accessory circuits, audio amplifiers, and embedded systems requiring a stable +12V supply. Its robust protection makes it ideal for both prototype and production environments.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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