UA78M33CDCYRG3 Texas Instruments Power Supply (SOT223 (3-Pin)) In Stock
UA78M33CDCYRG3 is a 500mA fixed 3.3V positive linear voltage regulator in SOT-223 package with up to 30V input, offering tight output regulation and thermal protection. From $0.18 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT223 (3-Pin)
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- UA78M33CDCYRG3 Datasheet PDF
- Category
- Power Supply
- Price
- From $0.1823(MOQ 250)
- Temp Range
- ?°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 3.3V output voltage with ±2% accuracy for stable system power rails
- 500mA output current capability with internal current limiting and thermal shutdown protection
- Wide input voltage range from 5.3V to 30V (35V absolute maximum) for versatile system designs
- Low line regulation of 0.1% max ensuring stable output under varying input conditions
- SOT-223 (4-pin) surface-mount package with exposed thermal pad for improved heat dissipation
- AEC-Q100 qualified, RoHS compliant (Pb-free, JESD-609 e3) for automotive and industrial applications
Applications
The UA78M33CDCYRG3 is widely used in embedded systems and microcontroller power supply circuits where a regulated 3.3V rail is required from higher-voltage sources such as 5V or 12V inputs. Its robust thermal protection and current limiting make it suitable for industrial control boards, automotive electronics, and consumer devices requiring a compact, reliable linear regulator. The SOT-223 package enables efficient board-level integration in space-constrained designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Nom | 2V |
| Input Voltage Absolute-Max | 35V |
| Input Voltage-Max | 30V |
| Input Voltage-Min | 5.3V |
| JESD-30 Code | R-PDSO-G4 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.1% |
| Load Regulation-Max | 0.1% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Output Current1-Max | 0.5A |
| Output Voltage1-Max | 3.5V |
| Output Voltage1-Min | 3.1V |
| Output Voltage1-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOT-223 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| 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 | 2.3mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 3% |
| ## UA78M33CDCYRG3 Alternates Showing results | Image |
| Package | SOT223 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UA78M33CDCYRG3:
suggested
suggested
suggested
Frequently Asked Questions
What is the output voltage and current rating of the UA78M33CDCYRG3?
The UA78M33CDCYRG3 provides a fixed 3.3V output voltage with a maximum output current of 500mA. The output accuracy is within ±2%, making it suitable for powering 3.3V microcontrollers, FPGAs, and other digital logic circuits.
What input voltage range does the UA78M33CDCYRG3 support?
The UA78M33CDCYRG3 operates with an input voltage range of 5.3V to 30V, with an absolute maximum rating of 35V. A minimum dropout voltage of 2V must be maintained between input and output to ensure proper regulation.
Is the UA78M33CDCYRG3 suitable for automotive or industrial applications?
Yes, the UA78M33CDCYRG3 is AEC-Q100 qualified and RoHS compliant (Pb-free, e3), making it appropriate for automotive and industrial environments. Its built-in thermal shutdown and current limiting features provide robust protection under harsh operating conditions.
What package type does the UA78M33CDCYRG3 use, and are there alternative packages available?
The UA78M33CDCYRG3 comes in a SOT-223 (3-pin/4-pin) surface-mount package (JESD-30 code: R-PDSO-G4), which includes an exposed thermal pad for better heat dissipation. Texas Instruments also offers the UA78M33 in other packages such as TO-252 (D-PAK) for higher thermal requirements.
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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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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 250+ | $0.3495 | $87.38 |
| 500+ | $0.3339 | $166.97 |
| 1000+ | $0.3120 | $312.00 |
| 1015+ | $0.1971 | $200.06 |
| 1320+ | $0.1897 | $250.40 |
| 1650+ | $0.1823 | $300.79 |
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