800-219-9001 RFQ
LM340-AT-15 — TO-220 package (representative)
TO-220
Representative of package type
National Semiconductor

LM340-AT-15

Linear Voltage Regulator · TO-220 · Analog
Part Status: Obsolete In demand
Data last refreshed Aug 17, 2026
Manufacturer
National Semiconductor
Mfr Part #
LM340-AT-15
Series
LM340
Category
Linear Voltage Regulator
Datasheet
View datasheet ↗
Availability & Pricing
Est. market range$0.4 – $1.50
Sourcing channels13
Request a Quote → Check Live Availability

Live pricing on request · most quotes same business day

Product Attributes

Electrical & Parametric
Output Voltage15 V
Output Current1 A
Input Voltage Max35 V
Physical & Thermal
Package / CaseTO-220
Mounting TypeThrough Hole
SeriesLM340
Operating Temperature0°C ~ 125°C
Classification & Lifecycle
CategoryLinear Voltage Regulator
TypeAnalog
Part StatusObsolete

15 V, 1 A positive linear voltage regulator

Availability & Sourcing

13 sources
SourceMfrQtyDate CodeConditionStatus
Live NSC 1 Live RFQ
Market MOTOROLA 114 99+ Available RFQ
Market NATIONAL SEMICO 111 17AB Available RFQ
Market NATIONAL SEMI 75 38AG Available RFQ
Market NSC 46 9118 Available RFQ
Market MOT 7 Available RFQ
Market MOTOROLA 5 Available RFQ
Market N 3 NON-ROHS Available RFQ
Market NSC 3 9124 Available RFQ
Market NSC 1 Available RFQ
Market MOTOROLA 1 Available RFQ
Market NATIONAL SEMI 1 84 Available RFQ
Market MOTOROLA INC 1 Available RFQ

ZDI Stock — in our warehouse · Market — offers available through our sourcing network · Live — recent offers from our sourcing network.

Price History & Market Reference

Market Price Range

High$1.50
Low$0.4
Last$0.95
Price as of2026-08-17

ZDI Transaction

ZDI priceQuote on request
Active offers13

Pricing reflects ZDI's transaction and market-reference data. Firm pricing confirmed per RFQ against current availability.

Part Activity

recent searches, RFQs & offers
LM340-AT-15 viewed on the web · Web User
LM340-AT-15 viewed on the web · Web User
LM340-AT-15 viewed on the web · Web User
LM340-AT-15 viewed on the web · Web User
LM340-AT-15 viewed on the web · Web User
LM340-AT-15 viewed on the web · Web User
LM340-AT-15 viewed on the web · Web User
LM340-AT-15 viewed on the web · Web User

Recent search and sourcing activity for LM340-AT-15.

Engineering FAQ

LM340-AT-15 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 are the key specifications of LM340-AT-15?
Output Voltage: 15 V; Output Current: 1 A; Input Voltage Max: 35 V.
What package is LM340-AT-15 supplied in?
LM340-AT-15 is supplied in the TO-220 package, through hole, rated 0°C ~ 125°C.
Can ZDI source LM340-AT-15 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

LM340-AT-15 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.

Related Parts

from National Semiconductor

Need LM340-AT-15?

ZD Integrated Circuits sources hard-to-find, obsolete, and excess components worldwide — pricing and availability, fast.

Request a Quote →