The Texas Instruments LM140K-12 is a fixed 12 V, 1 A positive regulator in a TO-3 package with an extended temperature range. It provides a simple, protected 12 V rail for legacy and industrial equipment.
Key Specifications
| Manufacturer | Texas Instruments |
| Exact Manufacturer Part Number | LM140K-12 |
| Product Category | Power Management – Voltage Regulators |
| Series / Family | LM140 / LM340 |
| Package / Case | TO-3 |
| Mounting Type | Surface Mount |
| Operating Temperature | -55°C to +150°C |
| Power Supply | 14.5 V to 27 V (fixed 12 V out) |
| Output Current | 1 A |
| Output Voltage | Fixed 12 V |
| Output Current | 1 A |
| Internal | Thermal + current limiting |
| Lifecycle Status | Active |
| Official Documentation | View official documentation |
Key Features
- Fixed 12 V positive regulator
- 1 A output
- Internal thermal and current limiting
- Extended temperature range
- TO-3 metal package
- No external components
Applications
- Fixed 12 V rails
- Legacy systems
- Industrial equipment
- Military-grade supplies
Sourcing
Availability, lead time, date code and commercial terms are subject to confirmation at the time of quotation.
Quality
CHIPER sources brand-new, unused components and provides quality inspection, shortage and long lead-time sourcing, and one-stop BOM procurement. Every part is verified before shipment.
FAQ
What output does the LM140 provide?
It provides a fixed 12 V output at up to 1 A over an extended temperature range.
What package does it use?
It uses a TO-3 metal-can package.