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National Semiconductor Corp

LM317AK-STEEL

Voltage Regulator · TO-3 · Analog
Part Status: Obsolete
Data last refreshed Jul 31, 2026
Manufacturer
National Semiconductor Corp
Mfr Part #
LM317AK-STEEL
Series
LM317
Category
Voltage Regulator
Datasheet
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Availability & Pricing
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Specifications

Physical & Thermal
Package / CaseTO-3
Mounting TypeThrough Hole
SeriesLM317
Classification & Lifecycle
CategoryVoltage Regulator
TypeAnalog
Part StatusObsolete

Adjustable positive linear voltage regulator, 1.2V-37V output

Part Activity

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LM317AK-STEEL viewed on the web · Web User
LM317AK-STEEL viewed on the web · Web User
LM317AK-STEEL viewed on the web · Web User
Specifications reviewed & updated · ZDI

Recent search and sourcing activity for LM317AK-STEEL.

Engineering FAQ

LM317AK-STEEL is marked Obsolete — how does ZDI assure authenticity?
Obsolete and end-of-life parts carry elevated counterfeit risk, which is exactly why ZDI routes every lot through the full EQuality Process™ — validation, QI-1 and QI-2/camera inspection, RoHS verification, bake and bag-and-tag, and QI-3 final inspection — with source-country supplier vetting and full lot traceability before release.
What package is LM317AK-STEEL supplied in?
LM317AK-STEEL is supplied in the TO-3 package, through hole.
Can ZDI source LM317AK-STEEL beyond the quantities shown?
Yes — ZD Integrated Circuits specializes in sourcing hard-to-find, obsolete, and excess electronic components through its global network, with counterfeit-avoidance inspection on every lot. Submit an RFQ with your target quantity for availability and pricing.

Documents & Media

Quality & Counterfeit Avoidance

ISO 9001 ERAI Member ESD Certified GIDEP Participant ZDI EQuality Process CAGE Code 1V8K2

ZD Integrated Circuits operates an ISO 9001-certified quality system incorporating JEDEC-standard process-control elements. In an era of global sourcing and internet procurement, standards compliance alone no longer assures component authenticity — so ZDI pioneered a multi-layered counterfeit-avoidance program: supplier analysis at the source-country level, detailed component analysis, defined inspection standards for all incoming devices, and stringent supplier rating and review. These programs let ZDI guarantee the integrity and the source of every component it ships.

Every lot moves through ZDI's EQuality Process™ — validation, QI-1 and QI-2/camera inspection, RoHS verification, bake and bag-and-tag, and QI-3 final inspection — with Quality-Manager disposition before release. Nonconforming material is quarantined; conforming material is warehoused or shipped.

✓Multi-stage EQuality Process™ inspection (QI-1 · QI-2/camera · QI-3)
✓Source-country supplier analysis, rating & review
✓Incoming inspection, RoHS verification, bake, full lot traceability
✓ESD-controlled handling · authentic parts guaranteed

LM317AK-STEEL is marked Obsolete. Obsolete and end-of-life parts carry elevated counterfeit risk — exactly why ZDI routes them through the full EQuality Process™ with source-country supplier vetting, inspection, and traceability.

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