REG1117-3.3/2K5 Texas Instruments power-management (SOT-223) In Stock
Texas Instruments REG1117-3.3/2K5 is a 1A 3.3V LDO linear regulator in SOT-223, tape & reel 2500 pcs. From $1.35/pc, in stock, ships globally, MOQ 1.
- Manufacturer
- Texas Instruments
- Package
- SOT-223
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- REG1117-3.3/2K5 Datasheet PDF
- Category
- power-management
- Price
- From $0.5670(MOQ 1)
- Temp Range
- 0.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of REG1117-3.3/2K5?
- 1A output current capacity for robust 3.3V rail supply
- Low dropout voltage (~1.2V typ) enables efficient regulation from 3.3V–15V input
- Fixed 3.3V output ±1% accuracy for stable digital logic supply
- SOT-223 package with exposed thermal pad for enhanced heat dissipation
- 2500-piece tape & reel (2K5) for SMT pick-and-place production lines
- RoHS compliant, 0°C to 125°C commercial temperature range
What is REG1117-3.3/2K5 used for?
Widely used in embedded systems and IoT devices to power 3.3V microcontrollers, FPGAs, and SoCs from a 5V or 12V rail. Suitable for industrial control boards, consumer electronics, and telecom equipment requiring a compact, cost-effective linear regulator with reliable thermal performance.
What are the specifications of REG1117-3.3/2K5?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 1.2V |
| Dropout Voltage1-Nom | 1.1V |
| Input Voltage Absolute-Max | 15V |
| Input Voltage-Max | 15V |
| Input Voltage-Min | 4.8V |
| JESD-30 Code | R-PDSO-G4 |
| JESD-609 Code | e4 |
| Line Regulation-Max | 0.007% |
| Load Regulation-Max | 0.012% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.8A |
| Output Voltage1-Max | 3.36V |
| Output Voltage1-Min | 3.24V |
| 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 LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.3mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 1.8% |
| ## REG1117-3.3/2K5 Alternates Showing results | Image |
| Package | SOT-223 |
Compliance & Regulatory
| RoHS Status | Compliant |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the REG1117-3.3/2K5 datasheet?
REG1117-3.3/2K5 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for REG1117-3.3/2K5?
Compatible alternatives and drop-in replacements for REG1117-3.3/2K5:
SOT-223 1A 3.3V LDO regulator, compatible footprint and electrical specs
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suggested
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suggested
suggested
Frequently Asked Questions
What is the REG1117-3.3/2K5 and what does it do?
The REG1117-3.3/2K5 is a 1A fixed-output 3.3V low-dropout (LDO) linear voltage regulator manufactured by Texas Instruments. It accepts an input voltage from approximately 4.5V to 15V and delivers a stable 3.3V output with ±1% accuracy at up to 1A load current. The '2K5' suffix indicates it ships in a 2500-piece tape and reel for automated SMT assembly.
What package and pin count does the REG1117-3.3/2K5 use?
It uses the SOT-223 surface-mount package, which has 4 pins: Input (pin 1), GND (pin 2), Output (pin 3), and an Output tab (pin 4) that also functions as a thermal pad for heat dissipation. The exposed metal tab must be connected to the output net on the PCB to improve thermal performance.
What is the operating temperature range of the REG1117-3.3/2K5?
The REG1117-3.3/2K5 is rated for commercial temperature operation from 0°C to 125°C (junction temperature). For extended industrial or automotive applications requiring −40°C to 125°C, consider TI's REG1117A-3.3 or similar industrial-grade LDO variants.
What are common alternatives or drop-in replacements for the REG1117-3.3/2K5?
Compatible alternatives include the AMS1117-3.3 (AMS, SOT-223, 1A, widely available and pin-compatible), the LD1117S33TR (STMicroelectronics, SOT-223, 1A, 1% accuracy), and the NCP1117ST33T3G (ON Semiconductor, SOT-223, 1A). All share the same pin configuration and deliver a fixed 3.3V output at 1A from an LDO topology.
Is the REG1117-3.3/2K5 RoHS compliant and what is its lifecycle status?
Yes, the REG1117-3.3/2K5 is RoHS compliant and lead-free. It is an active product in Texas Instruments' portfolio with full production availability. The 2K5 tape and reel format is suited for high-volume PCB assembly, and single-piece MOQ is also supported for prototyping.
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Why Buy from FindMyChip
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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