L78M24ABDT-TR STMicroelectronics Integrated Circuit (Other) In Stock
The L78M24ABDT-TR is a fixed 24 V positive linear voltage regulator from STMicroelectronics with 500 mA output current and a 27 V to 38 V input range in a surface-mount DPAK-3 package. It features a typical 2 V dropout voltage and 0.1% maximum line regulation for stable output in industrial and consumer power supplies. Available from stock worldwide at competitive pricing with tape-and-reel packaging for automated assembly.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- L78M24ABDT-TR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1467(MOQ 100)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of L78M24ABDT-TR?
- Fixed 24 V regulated output with ±2% accuracy ensures stable supply for industrial control and instrumentation circuits
- 500 mA continuous output current in a compact DPAK-3 surface-mount package with exposed thermal pad for efficient heat dissipation
- Wide 27 V to 38 V input range (absolute max 40 V) accommodates unregulated or fluctuating supply voltages
- 0.1% maximum line regulation provides excellent output stability across the full input voltage operating range
What is L78M24ABDT-TR used for?
The L78M24ABDT-TR is designed for use in industrial control systems, programmable logic controllers, and factory automation equipment requiring a stable 24 V regulated supply from an unregulated or higher-voltage DC bus. It is also suitable for powering relay drivers, solenoids, and sensor interfaces in HVAC systems, building automation, and process control panels. The DPAK-3 surface-mount package facilitates compact board designs while the exposed thermal pad enables adequate heat dissipation for medium-current loads.
What are the specifications of L78M24ABDT-TR?
| Factory Lead Time | 12Weeks |
| YTEOL | 6.16 |
| Adjustability | FIXED |
| Dropout Voltage1-Nom | 2V |
| Input Voltage Absolute-Max | 40V |
| Input Voltage-Max | 38V |
| Input Voltage-Min | 27V |
| JESD-30 Code | R-PSSO-G2 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.1% |
| Load Regulation-Max | 0.48% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.5A |
| Output Voltage1-Max | 25V |
| Output Voltage1-Min | 23V |
| Output Voltage1-Nom | 24V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP3H,.38,90TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT STANDARD REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.28mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 4.17% |
| ## L78M24ABDT-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 |
Where can I find the L78M24ABDT-TR datasheet?
L78M24ABDT-TR Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for L78M24ABDT-TR?
Compatible alternatives and drop-in replacements for L78M24ABDT-TR:
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Frequently Asked Questions
What are the key electrical specifications of the L78M24ABDT-TR?
The L78M24ABDT-TR is a fixed 24 V linear regulator with a 500 mA maximum output current and an input voltage range of 27 V to 38 V (absolute maximum 40 V). It has a typical dropout voltage of 2 V, meaning the input must be at least 26 V to maintain regulation. Line regulation is specified at 0.1% maximum, ensuring stable output across the full input range. The device is packaged in a DPAK-3 surface-mount format with a 12-week factory lead time.
What is the DPAK-3 package and what are its thermal characteristics?
The DPAK-3 (Decawatt Package, 3-pin) is a surface-mount power package with a large metal tab on the bottom that serves as both a heat spreader and an electrical connection (typically collector or drain). It is also known as the TO-252 package. The exposed tab can be soldered directly to the PCB copper plane or a thermal pad, providing a low thermal resistance path for heat removal. This allows the L78M24ABDT-TR to dissipate sufficient power to deliver 500 mA continuously without an external heatsink in most applications.
What applications is the L78M24ABDT-TR best suited for?
This regulator is ideal for industrial applications that run from a 24 V DC bus powered by an unregulated supply, including PLCs, HMI panels, industrial sensors, relay coil drivers, and HVAC control boards. It is also used in commercial building automation, security system power supplies, and 24 V instrumentation circuits. The combination of a 38 V maximum input, stable 24 V output, and medium current capability makes it well-suited wherever a linear post-regulator is needed after a switched-mode pre-converter.
What does the -TR suffix mean in the L78M24ABDT-TR part number?
The -TR suffix indicates tape-and-reel packaging, meaning the L78M24ABDT-TR is supplied on reels for use with automated surface-mount assembly pick-and-place equipment. This packaging format is standard for high-volume PCB manufacturing. The 'ABD' portion of the name denotes the DPAK-3 surface-mount package variant of the L78M24 regulator series, distinguishing it from through-hole versions such as the TO-220 packaged L78M24CV.
Are there alternative voltage regulators compatible with the L78M24ABDT-TR?
The L78M24ABDT-TR is part of STMicroelectronics' L78Mxx positive linear regulator family; other manufacturers offer equivalent devices such as the Texas Instruments UA7824, ON Semiconductor MC7824, and Fairchild KA7824 in similar packages. Designers should verify output voltage accuracy, input voltage range, maximum output current, dropout voltage, and package pinout when selecting a replacement. The DPAK-3 package footprint is standardized (TO-252), but thermal resistance and maximum ratings may differ between manufacturers.
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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+ | $0.3060 | $30.60 |
| 250+ | $0.2740 | $68.50 |
| 500+ | $0.2170 | $108.50 |
| 2500+ | $0.1467 | $366.75 |
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