MCP1703AT-5002E/DBVAO Microchip Diode (SOT223 (3-Pin)) In Stock
MCP1703AT-5002E/DBVAO is a fixed 5 V LDO linear voltage regulator from Microchip in a SOT-223-3 package, accepting up to 16 V input with a typical 0.33 V dropout voltage. Maximum absolute input voltage is 18 V for robust protection. From $0.60, in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT223 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1703AT-5002E/DBVAO Datasheet PDF
- Category
- Diode
- Price
- From $0.2200(MOQ 25)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 5 V output with typical dropout of only 0.33 V for efficient regulation at moderate load
- Wide input voltage range from 5.75 V to 16 V accommodating diverse unregulated supply rails
- Absolute maximum input voltage of 18 V providing extra margin against transients and surge events
- SOT-223-3 package with exposed thermal pad for improved heat dissipation in compact designs
Applications
MCP1703AT-5002E/DBVAO is used to generate a stable 5 V rail from higher unregulated supplies in industrial sensor modules, embedded system boards, and automotive accessories. Its wide 16 V input range accommodates 12 V car battery rails with transient spikes, making it a reliable choice for in-vehicle electronics. The SOT-223 package simplifies thermal management in cost-sensitive PCB designs requiring regulated 5 V logic power.
Specifications
| Manufacturer Package Code | SOT-223-3 |
| Factory Lead Time | 7Weeks |
| YTEOL | 19 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.65V |
| Dropout Voltage1-Nom | 0.33V |
| Input Voltage Absolute-Max | 18V |
| Input Voltage-Max | 16V |
| Input Voltage-Min | 5.75V |
| JESD-30 Code | R-PDSO-G4 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.15375% |
| Load Regulation-Max | 0.125% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.25A |
| Output Voltage1-Max | 5.15V |
| Output Voltage1-Min | 4.85V |
| Output Voltage1-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOT-223 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Screening Level | AEC-Q100 |
| Surface Mount | YES |
| Technology | CMOS |
| 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% |
| ## MCP1703AT-5002E/DBVAO Alternates Showing results | Image |
| Package | SOT223 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Taiwan, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP1703AT-5002E/DBVAO:
Frequently Asked Questions
What is the dropout voltage of MCP1703AT-5002E/DBVAO at full load and why does it matter for battery designs?
MCP1703AT-5002E/DBVAO has a typical dropout voltage of 0.33 V and a maximum dropout of 0.65 V. For a 5 V output, the input must stay above 5.65 V maximum under load, meaning a 6 V alkaline pack or 9 V supply provides comfortable margin throughout the discharge curve without losing regulation.
Can MCP1703AT-5002E/DBVAO handle a 12 V automotive power rail with load-dump transients?
Yes, MCP1703AT-5002E/DBVAO accepts a maximum input voltage of 16 V continuous and an absolute maximum of 18 V, which covers the nominal 12 V automotive rail plus typical load-dump transients. Engineers should add a transient-voltage suppressor for sustained spikes above 18 V to ensure the regulator remains protected in harsh vehicle environments.
How does the SOT-223-3 package of MCP1703AT-5002E/DBVAO aid thermal performance compared to SOT-23?
The SOT-223-3 package features a large exposed metal tab on the back that acts as a heatsink, reducing junction-to-ambient thermal resistance to approximately 50 °C/W on a standard two-layer PCB. The smaller SOT-23 package typically runs at 250 °C/W, so SOT-223 allows MCP1703AT to deliver several hundred milliamps more current before hitting the thermal shutdown threshold.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $0.2500 | $6.25 |
| 100+ | $0.2300 | $23.00 |
| 1000+ | $0.2200 | $220.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”