What are the key specifications of the 78L05U?

It features a 5V output, 100mA maximum output current, 30V maximum input voltage, and operates between -20°C and +120°C.

What is the pinout of 78L05U?

Use the 78L05U datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about 78L05U pinout to locate pins, power rails, and interface signals before layout.

78L05U Datasheet, Specs, Alternatives & ECAD | Hong Kong China Base Electronic Technology Limited

AI summary

The 78L05U is a standard 5V linear voltage regulator in a SOT-89 package, suitable for low-power applications requiring stable voltage rails.

Best for

General purpose 5V power regulation
Low-current electronic circuits

Avoid if

High current applications exceeding 100mA
Applications requiring very low dropout voltage

Check before use

Thermal management on the PCB
Input/output capacitor values

Key specifications

Output Voltage: 5 V
Max Output Current: 100 mA
Package: SOT-89

Compliance & Environment

RoHS: -
REACH: -
MSL: -
ECCN: -
HTSUS: -

Application

Power Management

Datasheet

65d897310ef1537471c72ea78e759f14_2202131900_CBI-78L05U_C2828474.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for 78L05U: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol

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PCB Footprint

Land pattern for PCB layout

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3D Model

STEP file for mechanical design

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KiCad Library

Verified KiCad 8 symbol, footprint, and 3D model

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Where to Buy

Real-time and catalog pricing from verified distributors

Alternative components

Part	Details	Match
AZ1117CR-5.0TRG1Manufacturer	URL can't contain control characters. '/component/docs/d913b5dfb7f33149c554249a106f4e82_2211102030_Diodes-Incorporated-AZ1117CR-5-0TRG1_C5187273.pdf, https://s3.lax.sharktech.net/viassion/datasheets/hqonline/f26a169f63f561060656c6a90f4c18a2.pdf' (found at least ' ')	Has caveats

BRCO7550TManufacturer	404 NOT_FOUND. {'error': {'code': 404, 'message': 'Publisher model `projects/still-protocol-478404-g8/locations/us-central1/publishers/google/models/gemini-3.1-pro-preview` was not found or your project does not have access to it. Ensure you are using a valid model name and that the model is available in the specified region. For more information, see: https://docs.cloud.google.com/gemini-enterprise-agent-platform/resources/locations.', 'status': 'NOT_FOUND'}}	Has caveats
BRCO7550TManufacturer	404 NOT_FOUND. {'error': {'code': 404, 'message': 'Publisher model `projects/still-protocol-478404-g8/locations/us-central1/publishers/google/models/gemini-3.1-pro-preview` was not found or your project does not have access to it. Ensure you are using a valid model name and that the model is available in the specified region. For more information, see: https://docs.cloud.google.com/gemini-enterprise-agent-platform/resources/locations.', 'status': 'NOT_FOUND'}}	Has caveats
GN78L05ASRManufacturer	404 NOT_FOUND. {'error': {'code': 404, 'message': 'Publisher model `projects/still-protocol-478404-g8/locations/us-central1/publishers/google/models/gemini-3.1-pro-preview` was not found or your project does not have access to it. Ensure you are using a valid model name and that the model is available in the specified region. For more information, see: https://docs.cloud.google.com/gemini-enterprise-agent-platform/resources/locations.', 'status': 'NOT_FOUND'}}	Has caveats
GN78L05ASRManufacturer	404 NOT_FOUND. {'error': {'code': 404, 'message': 'Publisher model `projects/still-protocol-478404-g8/locations/us-central1/publishers/google/models/gemini-3.1-pro-preview` was not found or your project does not have access to it. Ensure you are using a valid model name and that the model is available in the specified region. For more information, see: https://docs.cloud.google.com/gemini-enterprise-agent-platform/resources/locations.', 'status': 'NOT_FOUND'}}	Has caveats
HT7550S-1Manufacturer	404 NOT_FOUND. {'error': {'code': 404, 'message': 'Publisher model `projects/still-protocol-478404-g8/locations/us-central1/publishers/google/models/gemini-3.1-pro-preview` was not found or your project does not have access to it. Ensure you are using a valid model name and that the model is available in the specified region. For more information, see: https://docs.cloud.google.com/gemini-enterprise-agent-platform/resources/locations.', 'status': 'NOT_FOUND'}}	Has caveats
LR78L05AManufacturer	URL can't contain control characters. '/component/docs/caeb716a306f0a2b1a518ae562d23853_2108072330_LRC-LR78L05A_C2846923.pdf, https://s3.lax.sharktech.net/viassion/datasheets/hqonline/fc7f725f2169830542a2e4333f9ee1f5.pdf' (found at least ' ')	Has caveats
MS78L05Manufacturer	MS78L05 is a Redesign Alternative for 78L05U, because Vin coverage is sufficient; review the narrower temperature rating.	Has caveats

Design and risk insights

Questions & answers

The 78L05U is a 3-terminal positive voltage regulator that provides a fixed 5V output.

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Where to Buy

Alternative components

Design and risk insights

Questions & answers

What is the 78L05U?+×

What are the key specifications of the 78L05U?+×

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