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KA5Q1265 — TO-220 package (representative)
TO-220
Representative of package type
Fairchild Semiconductor

KA5Q1265

SMPS Controller · TO-220F-5L · Integrated Circuit
Part Status: Obsolete
Data last refreshed Jun 18, 2026
Manufacturer
Fairchild Semiconductor
Mfr Part #
KA5Q1265
Series
KA5Q
Category
SMPS Controller
Datasheet
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Availability & Pricing
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Product Attributes

Electrical & Parametric
Bvdss650 V
Id12 A
Rds(On)0.65 Ω
Physical & Thermal
Package / CaseTO-220F-5L
Mounting TypeThrough Hole
SeriesKA5Q
Operating Temperature-25°C ~ 85°C
Classification & Lifecycle
CategorySMPS Controller
TypeIntegrated Circuit
Part StatusObsolete

Quasi-resonant offline flyback PWM controller with integrated 650 V MOSFET

Part Activity

recent searches, RFQs & offers
KA5Q1265 viewed on the web · Web User
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KA5Q1265 viewed on the web · Web User

Recent search and sourcing activity for KA5Q1265.

Engineering FAQ

KA5Q1265 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 KA5Q1265?
Bvdss: 650 V; Id: 12 A; Rds(On): 0.65 Ω.
What package is KA5Q1265 supplied in?
KA5Q1265 is supplied in the TO-220F-5L package, through hole, rated -25°C ~ 85°C.
Can ZDI source KA5Q1265 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

KA5Q1265 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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