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ZTX1049ASTZ — TO-92 package (representative)
TO-92
Representative of package type
Zetex Semiconductors

ZTX1049ASTZ

BJT (Bipolar Junction Transistor) · TO-92 (E-Line) · Discrete Semiconductor
Part Status: DISCONTINUED
Data last refreshed Jul 31, 2026
Manufacturer
Zetex Semiconductors
Mfr Part #
ZTX1049ASTZ
Series
ZTX1049A
Category
BJT (Bipolar Junction Transistor)
Datasheet
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Availability & Pricing
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Product Attributes

Electrical & Parametric
Vceo25V
Ic4A
Pd1W
Physical & Thermal
Package / CaseTO-92 (E-Line)
Mounting TypeThrough Hole
SeriesZTX1049A
Classification & Lifecycle
CategoryBJT (Bipolar Junction Transistor)
TypeDiscrete Semiconductor
Part StatusDISCONTINUED

NPN silicon planar medium-power transistor, 25V Vceo, 4A Ic

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Engineering FAQ

answers from this part's real data
ZTX1049ASTZ is marked DISCONTINUED — 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 ZTX1049ASTZ?
Vceo: 25V; Ic: 4A; Pd: 1W.
What package is ZTX1049ASTZ supplied in?
ZTX1049ASTZ is supplied in the TO-92 (E-Line) package, through hole.
Can ZDI source ZTX1049ASTZ 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

ZTX1049ASTZ is marked DISCONTINUED. 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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