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L4973D-3.3 — TSSOP / SSOP / MSOP package (representative)
TSSOP / SSOP / MSOP
Representative of package type
STMicroelectronics

L4973D-3.3

Switching Regulator · SO-20 · Power Management
Data last refreshed Jun 19, 2026
Manufacturer
STMicroelectronics
Mfr Part #
L4973D-3.3
Series
L4973
Category
Switching Regulator
Datasheet
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Availability & Pricing
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Product Attributes

Electrical & Parametric
Output Current3.5 A
Output Voltage3.3 V
Physical & Thermal
Package / CaseSO-20
Mounting TypeSurface Mount
SeriesL4973
Classification & Lifecycle
CategorySwitching Regulator
TypePower Management

3.5 A step-down switching regulator, fixed 3.3 V output

Part Activity

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Recent search and sourcing activity for L4973D-3.3.

Engineering FAQ

What are the key specifications of L4973D-3.3?
Output Current: 3.5 A; Output Voltage: 3.3 V.
What package is L4973D-3.3 supplied in?
L4973D-3.3 is supplied in the SO-20 package, surface mount.
Can ZDI source L4973D-3.3 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

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