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TR1-CT-IR-IR3859M — QFN-16 (e.g. 3×3) package (representative)
QFN-16 (e.g. 3×3)
Representative of package type
International Rectifier

TR1-CT-IR-IR3859M

Synchronous Buck Converter · PQFN 5x6 · Analog
Part Status: Obsolete
Data last refreshed Aug 4, 2026
Manufacturer
International Rectifier
Mfr Part #
TR1-CT-IR-IR3859M
Series
SupIRBuck
Category
Synchronous Buck Converter
Datasheet
View datasheet ↗
Availability & Pricing
Est. market range$1.50 – $4.00
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Product Attributes

Electrical & Parametric
Output Current4 A
Switching Freq1.5 MHz
Physical & Thermal
Package / CasePQFN 5x6
Mounting TypeSurface Mount
SeriesSupIRBuck
Operating Temperature-40°C ~ 125°C
Classification & Lifecycle
CategorySynchronous Buck Converter
TypeAnalog
Part StatusObsolete

4A, 1.5 MHz synchronous buck regulator, 1.0-5.5 V out

Environmental & Export Classifications

RoHS Status
RoHS Compliant

Price History & Market Reference

Market Price Range

High$4.00
Low$1.50
Last$2.75
Price as of2026-08-04

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

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Recent search and sourcing activity for TR1-CT-IR-IR3859M.

Engineering FAQ

TR1-CT-IR-IR3859M 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 TR1-CT-IR-IR3859M?
Output Current: 4 A; Switching Freq: 1.5 MHz.
What package is TR1-CT-IR-IR3859M supplied in?
TR1-CT-IR-IR3859M is supplied in the PQFN 5x6 package, surface mount, rated -40°C ~ 125°C.
Can ZDI source TR1-CT-IR-IR3859M 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

TR1-CT-IR-IR3859M 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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