Skip to the content
PCBKitNew board
LD1117V33 on a board, in 3D

LD1117V33

STMicroelectronics

0℃~+125℃@(Tj) 1 1.2V@(800mA) 100uV 15V 3.3V 5mA 75dB@(120Hz) 800mA Fixed Over Current Protection、Thermal Shutdown Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS

Extended
Category
Voltage Regulators Linear, Low Drop Out (LDO) Regulators
Package
TO-220
Pins
3

Overview

The LD1117V33 is a voltage Regulators Linear, Low Drop Out (LDO) Regulator made by STMicroelectronics in a TO-220 package with 3 pins. 0℃~+125℃@(Tj) 1 1.2V@(800mA) 100uV 15V 3.3V 5mA 75dB@(120Hz) 800mA Fixed Over Current Protection、Thermal Shutdown Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.

PCBKit's library has its KiCad symbol (Regulator_Linear:LD1117V33, from KiCad's library) and its footprint (Package_TO_SOT_THT:TO-220-3_Vertical, from KiCad's library), ready for a KiCad board. 5,497 are in stock at JLCPCB (part C283467). 67 open-source boards in 59 repositories on GitHub use it.

Symbol

GND1VO2VI3
Regulator_Linear:LD1117V33From KiCad's library

Footprint

123
Package_TO_SOT_THT:TO-220-3_VerticalFrom KiCad's library

From the datasheet

12
Supply, most
15 V · Vin, operating max at IO = 100 mA · p. 12
Supply, absolute maximum
15 V · VIN, absolute max · p. 7
Supply, absolute maximum
18 V · VIN, absolute max when IOUT < 20 mA · p. 7
Junction, hottest
125 °C · Operating junction temperature max, standard version · p. 7
Takes working
5 mA · Quiescent current typical, Vin ≤ 15 V · p. 12
Gives
800 mA · Rated continuous output max · p. 1
Output
3.3 V · Output voltage typical, Vin = 5.3 V, IO = 10 mA, TJ = 25 °C · p. 12
Dropout
1 V · Dropout typical at IO = 100 mA · p. 12
Dropout
1.05 V · Dropout typical at IO = 500 mA · p. 12
Dropout
1.1 V · Dropout typical at IO = 800 mA · p. 12
Junction to case (TO-220)
5 K/W · Thermal resistance junction-case · p. 7
Junction to air (TO-220)
50 K/W · Thermal resistance junction-ambient · p. 7

What it is and has

1
Protection
Internal current and thermal limit · p. 1

Specifications

21
ParameterConditionsAs printedPage
DC input voltage VINAbsolute maximum rating of VIN = 18 V, when IOUT is lower than 20 mA.max 15 V7
Power dissipation PTOTmax 12 W7
Storage temperature range TSTGmin -40 · max 150 °C7
Operating junction temperature range TOPfor standard versionmin 0 · max 125 °C7
Thermal resistance junction-case RthJCTO-220typ 5 °C/W7
Thermal resistance junction-ambient RthJATO-220typ 50 °C/W7
Output voltage VOVin = 5.3 V, IO = 10 mA, TJ = 25 °C; CO = 10 uFmin 3.267 · typ 3.3 · max 3.333 V12
Output voltage VOIO = 0 to 800 mA, Vin = 4.75 to 10 V; TJ = 0 to 125 °C, CO = 10 uFmin 3.235 · max 3.365 V12
Line regulation ΔVOVin = 4.75 to 15 V, IO = 0 mA; TJ = 0 to 125 °C, CO = 10 uFtyp 1 · max 6 mV12
Load regulation ΔVOVin = 4.75 V, IO = 0 to 800 mA; TJ = 0 to 125 °C, CO = 10 uFtyp 1 · max 10 mV12
Temperature stability ΔVOTJ = 0 to 125 °C, CO = 10 uFtyp 0.5 %12
Long term stability ΔVO1000 hrs, TJ = 125 °C; CO = 10 uFtyp 0.3 %12
Operating input voltage VinIO = 100 mA; TJ = 0 to 125 °C, CO = 10 uFmax 15 V12
Quiescent current IdVin ≤ 15 V; TJ = 0 to 125 °C, CO = 10 uFtyp 5 · max 10 mA12
Output current IOVin = 8.3 V, TJ = 25 °C; CO = 10 uFmin 800 · typ 950 · max 1300 mA12
Output noise voltage eNB = 10 Hz to 10 kHz, TJ = 25 °C; CO = 10 uFtyp 100 uV12
Supply voltage rejection SVRIO = 40 mA, f = 120 Hz, TJ = 25 °C; Vin = 6.3 V, Vripple = 1 VPP; CO = 10 uFmin 60 · typ 75 dB12
Dropout voltage VdIO = 100 mA; TJ = 0 to 125 °C, CO = 10 uFtyp 1 · max 1.1 V12
Dropout voltage VdIO = 500 mA; TJ = 0 to 125 °C, CO = 10 uFtyp 1.05 · max 1.15 V12
Dropout voltage VdIO = 800 mA; TJ = 0 to 125 °C, CO = 10 uFtyp 1.1 · max 1.2 V12
Thermal regulationTa = 25 °C, 30 ms Pulse; CO = 10 uFtyp 0.01 · max 0.1 %/W12

Ordering codes, by the datasheet

1
LD1117V33
TO-220 · 3.3 V output, standard version · p. 42

Parameters

16
Features
Thermal shutdown
Junction Temperature(Max)
125℃
Noise
100uV
Number of Outputs
1
Operating Temperature
0℃~+125℃@(Tj)
Output Configuration
Positive
Output Current
800mA
Output Type
Fixed
Output Voltage
3.3V
Power Supply Rejection Ratio (PSRR)
75dB@(120Hz)
Thermal Resistance(Junction to Ambient)
50℃/W
Thermal Resistance(Junction to Case)
5℃/W
Voltage - Supply
15V
Voltage - Supply(Absolute Max)
15V
Voltage Dropout
1.2V@(800mA)
standby current
5mA

Order codes

1

Pinout

3
The pins of the LD1117V33
PinNameType
1GNDPower in
2VOPower out
3VIPower in

Open-source boards using it

All 67
  • 4 layers194.3 × 92.8 mmVcu, the printed circuit board in 3D

    Vcu

    sufst/pcb

    Monorepo for all schematics and PCB designs

    212 parts19GPL-3.0
  • 2 layers78.7 × 81 mmBraids through hole V1.1 BRAIN, the printed circuit board in 3D

    Braids through hole V1.1 BRAIN

    sebastianbeyer/KOSMO_braids

    This is a KOSMO (Look Mum No Computer) version of the Mutable instruments braids, based on the through-hole version done by sound-force.nl.

    68 parts15
  • 2 layers99.9 × 99.9 mmSplit flap, the printed circuit board in 3D

    Split flap

    tinkermax/split-flap

    DIY mechanical spli-flap display

    28 parts13CC-BY-4.0
  • 4 layers80 × 60 mm01 main, the printed circuit board in 3D

    01 main

    wgbowley/OpenLSM

    Low-Cost Linear Synchronous Permanent-Magnet Motor

    99 parts11MIT
  • 2 layers155.5 × 65.9 mmPicozorro one th, the printed circuit board in 3D

    Picozorro one th

    maximevince/PicoZorro

    Amiga Zorro-II Bus Cards using nothing but an RPi Pico to interact with the bus

    48 parts2
  • 2 layers142.4 × 117.1 mmASME UM High current board, the printed circuit board in 3D

    ASME UM High current board

    umasme/2025-2026

    University of Miami ASME Official Repository for NASA Lunabotics Challenge

    93 parts2MIT
  • 2 layers77.7 × 53.3 mmPcb dang, the printed circuit board in 3D

    Pcb dang

    drovoh4k/dang

    Debido a esta problemática surge DANG, un sistema de control de aforo en las clases de mi universidad. Este sistema permite saber cuánta gente hay dentro de una clase concreta y mantener una trazabilidad de las aulas en…

    16 parts1

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/st/LD1117V33" title="LD1117V33 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/st/LD1117V33.jpg" alt="LD1117V33" width="1200" height="900">
A picture that opens the part, for a README
[![LD1117V33](https://pcbkit.io/embed/parts/st/LD1117V33.jpg?size=s)](https://pcbkit.io/parts/st/LD1117V33)

Questions

Is there a KiCad symbol and footprint for the LD1117V33?

Yes. The symbol is Regulator_Linear:LD1117V33 and the footprint Package_TO_SOT_THT:TO-220-3_Vertical, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LD1117V33?

TO-220, with 3 pins. Its footprint is drawn on this page.

Where is the LD1117V33 datasheet?

STMicroelectronics publishes it: the Datasheet link on this page opens it.

Where can I order the LD1117V33?

JLCPCB lists it as part C283467, with 5,497 in stock; the sellers' links on this page open their listings.

What can replace the LD1117V33?

Parts like it in the library: the LD1117V33C by STMicroelectronics, the AMS1117T-3.3G by HANSCHIP semiconductor, the LM1086IT-3.3G by HANSCHIP semiconductor and the LM1084T-3.3 by HGSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the LD1117V33?

67 boards in 59 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8