AMS1117 3.3V Voltage Regulator – Fixed 3.3V SMD LDO Regulator for ESP8266, ESP32, and Microcontrollers
The AMS1117 3.3V is a popular Low Dropout (LDO) linear voltage regulator that outputs a stable 3.3V DC from a higher input voltage. Packaged in the compact SOT-223 form, it's widely used in powering ESP8266, ESP32, sensors, and other 3.3V components in Arduino and embedded systems.
 
Key Features:
Fixed 3.3V Output
Converts input voltage to a steady 3.3V for 3.3V logic devices.
Low Dropout Voltage
Requires only about 1.1V above output for regulation—suitable for 5V to 3.3V conversion.
Compact SOT-223 Package
Surface-mount design, ideal for compact and portable circuit boards.
Supports up to 1A Output Current
Handles moderate power loads with proper heat dissipation.
Built-in Protections
Features internal short-circuit and thermal shutdown protection.
 
Applications:
Power supply for ESP8266, ESP32, NRF24L01
3.3V regulator for sensors and displays
Logic level conversion
Arduino and Raspberry Pi add-ons
Low-power embedded and IoT circuits
 
Package Includes:
1 × AMS1117 3.3V Voltage Regulator 
 
Specifications:
Output Voltage: 3.3V (fixed)
Input Voltage Range: 4.5V to 12V
Max Output Current: 1A
Dropout Voltage: approx. 1.1V at 800 mA
Package: SOT-223 (SMD)
Protections: Overcurrent, Thermal
Mounting Type: Surface Mount (SMD)
 
Dimensions:
Length: 6.5 mm
Width: 3.5 mm
Height: 1.5 mm
 
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Shipping Weight = 50 grams