800-219-9001 RFQ
BF494 — TO-92 package (representative)
TO-92
Representative of package type
NXP Semiconductors

BF494

NPN RF Transistor · TO-92 · Discrete Semiconductor
Part Status: Obsolete
Data last refreshed Jul 28, 2026
Manufacturer
NXP Semiconductors
Mfr Part #
BF494
Series
BF
Category
NPN RF Transistor
Datasheet
View datasheet ↗
Availability & Pricing
Unit PriceRequest a Quote
Request a Quote → Check Live Availability

Live pricing on request · most quotes same business day

Product Attributes

Electrical & Parametric
Vceo20 V
Ic10 mA
Ft400 MHz
Physical & Thermal
Package / CaseTO-92
Mounting TypeThrough Hole
SeriesBF
Operating Temperature-65°C ~ 150°C
Classification & Lifecycle
CategoryNPN RF Transistor
TypeDiscrete Semiconductor
Part StatusObsolete

NPN silicon RF transistor, Vceo 20V, Ic 10mA, ft 400MHz

Part Activity

recent searches, RFQs & offers
BF494 viewed on the web · Web User
BF494 viewed on the web · Web User
BF494 viewed on the web · Web User
BF494 viewed on the web · Web User
BF494 searched via the web · Web User
BF494 searched via the web · Web User
Specifications reviewed & updated · ZDI

Recent search and sourcing activity for BF494.

Engineering FAQ

BF494 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 BF494?
Vceo: 20 V; Ic: 10 mA; Ft: 400 MHz.
What package is BF494 supplied in?
BF494 is supplied in the TO-92 package, through hole, rated -65°C ~ 150°C.
Can ZDI source BF494 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

BF494 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.

Related Parts

from NXP Semiconductors

Need BF494?

ZD Integrated Circuits sources hard-to-find, obsolete, and excess components worldwide — pricing and availability, fast.

Request a Quote →