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National Semiconductor Corp

LM133K

Linear Regulator · TO-3 · Analog
In stock at ZDI Part Status: Obsolete
Data last refreshed Aug 14, 2026
Manufacturer
National Semiconductor Corp
Mfr Part #
LM133K
Series
LM133
Category
Linear Regulator
Datasheet
View datasheet ↗
Availability & Pricing
ZDI Stock50 pcs
PackagingTrayed
Est. market range$15.00 – $40.00
Request a Quote → Check Live Availability

Live pricing on request · most quotes same business day

Product Attributes

Electrical & Parametric
Output Voltage-1.2V to -32V adjustable
Output Current3A max
Physical & Thermal
Package / CaseTO-3
Mounting TypeThrough Hole
SeriesLM133
Operating Temperature0°C ~ 125°C
Classification & Lifecycle
CategoryLinear Regulator
TypeAnalog
Part StatusObsolete

3-terminal adjustable negative voltage regulator, -1.2V to -32V, 3A

Environmental & Export Classifications

RoHS Status
Non-Compliant

Availability & Sourcing

1 source row · masked
SourceMfrQtyDate CodeConditionStatus
ZDI Stock National Semiconductor Corp 50 NEW In Stock RFQ

ZDI Stock — held in our warehouse · Market — recent offers, sourced on request · Live — fresh from the broker network. Supplier identity and cost are never shown.

Price History & Market Reference

Market Price Range

High$40.00
Low$15.00
Last$27.50
Price as of2026-08-14

ZDI Transaction

ZDI priceQuote on request

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

Part Activity

recent searches, RFQs & offers
LM133K viewed on the web · Web User
LM133K searched via the web · Web User
LM133K searched via the web · Web User
LM133K searched via the web · Web User
LM133K searched via the web · Web User
LM133K searched via the web · Web User
LM133K searched via the web · Web User
LM133K searched via the web · Web User

Live search & sourcing activity for LM133K — real inquiries only.

Engineering FAQ

answers from this part's real data
LM133K 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 quantity and packaging is LM133K in ZDI stock?
ZDI holds 50 pcs, packaged as Trayed. Request a quote for confirmed quantity, lead time, and pricing.
What are the key specifications of LM133K?
Output Voltage: -1.2V to -32V adjustable; Output Current: 3A max.
What package is LM133K supplied in?
LM133K is supplied in the TO-3 package, through hole, rated 0°C ~ 125°C.
Can ZDI source LM133K 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

LM133K 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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