L7812ACD2T-TR STMicroelectronics Integrated Circuit (Other) In Stock
STMicroelectronics L7812ACD2T-TR is a fixed 12V positive linear voltage regulator delivering up to 1.5A output current from 14.8V to 25V input. Features 2V dropout voltage, built-in thermal shutdown and short-circuit protection in a D2PAK surface-mount package for industrial power regulation.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- L7812ACD2T-TR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4240(MOQ 25)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 12V output with tight voltage accuracy, 2V nominal dropout voltage, and 14.8V to 25V input range for stable voltage regulation in 12V rail applications
- Up to 1.5A output current with integrated thermal shutdown and short-circuit protection for reliable operation without external protection components
- D2PAK (TO-263) surface-mount package with tape-and-reel packaging (-TR suffix) enabling automated PCB assembly at high production volumes
Applications
The L7812ACD2T-TR is used in industrial power supplies, embedded system boards, and consumer electronics requiring a stable fixed 12V regulated rail from higher-voltage unregulated sources. Its surface-mount D2PAK package makes it suitable for automated assembly in power regulation circuits for motor drivers, relay coil drivers, sensor power rails, and audio amplifier supply stages. The integrated protection features simplify the design of safe and robust 12V power distribution systems without additional external components.
Specifications
| Factory Lead Time | 8Weeks |
| Date Of Intro | 1980-01-04 |
| YTEOL | 6.16 |
| Adjustability | FIXED |
| Dropout Voltage1-Nom | 2V |
| Input Voltage Absolute-Max | 35V |
| Input Voltage-Max | 25V |
| Input Voltage-Min | 14.8V |
| JESD-30 Code | R-PSSO-G2 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.12% |
| Load Regulation-Max | 0.1% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Output Current1-Max | 1A |
| Output Voltage1-Max | 12.5V |
| Output Voltage1-Min | 11.5V |
| Output Voltage1-Nom | 12V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP3H,.55TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG |
| Packing Method | TR, 13 INCH |
| Peak Reflow Temperature (Cel) | 245 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT STANDARD REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.54mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 2% |
| ## L7812ACD2T-TR Alternates Showing results | Image |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for L7812ACD2T-TR:
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Frequently Asked Questions
What is the output voltage and maximum current of the L7812ACD2T-TR?
The L7812ACD2T-TR provides a fixed 12V regulated output with a maximum output current of 1.5A. The output voltage accuracy is tightly controlled around 12V for reliable operation of 12V-powered circuits including relays, sensors, op-amps, and analog peripherals.
What input voltage range does the L7812ACD2T-TR require?
The L7812ACD2T-TR requires a minimum input voltage of 14.8V (12V output plus 2V dropout) and a maximum operating input of 25V, with an absolute maximum of 35V. It is well-suited for 18V, 20V, or 24V unregulated supplies commonly found in industrial and bench power applications.
What protection features are built into the L7812ACD2T-TR?
The L7812ACD2T-TR includes integrated thermal overload shutdown, which disables the output when the junction temperature exceeds safe limits and automatically recovers when the device cools. It also incorporates short-circuit current limiting to protect the regulator and downstream circuitry against overload conditions without requiring external fuses or protective components.
What package does the L7812ACD2T-TR use and what does the -TR suffix mean?
The L7812ACD2T-TR uses a D2PAK (TO-263) surface-mount package (JESD-30 code R-PSSO-G2), which provides excellent thermal dissipation through its large metal tab soldered to the PCB. The '-TR' suffix indicates tape-and-reel packaging for automated pick-and-place assembly in high-volume manufacturing.
What are common applications for the L7812ACD2T-TR voltage regulator?
Common applications include 12V regulated rails in industrial control boards, relay driver power supplies, analog sensor supply rails, audio preamplifier power stages, embedded computing boards, and consumer electronics powered from higher-voltage adapters or batteries requiring a clean fixed 12V supply.
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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 |
|---|---|---|
| 25+ | $0.7890 | $19.73 |
| 50+ | $0.7510 | $37.55 |
| 100+ | $0.6102 | $61.02 |
| 250+ | $0.5711 | $142.78 |
| 500+ | $0.5475 | $273.77 |
| 1000+ | $0.4240 | $424.00 |
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