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Finisar Corp

FCMJ-8521-3-J1

Optical Transceiver · 1x9 · Interface
Part Status: Obsolete
Data last refreshed Jul 31, 2026
Manufacturer
Finisar Corp
Mfr Part #
FCMJ-8521-3-J1
Series
FCMJ-8521
Category
Optical Transceiver
Datasheet
View datasheet ↗
Availability & Pricing
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Product Attributes

Electrical & Parametric
Data Rate1.25 Gb/s
Wavelength850 nm
ConnectorSC duplex
Physical & Thermal
Package / Case1x9
Mounting TypeThrough Hole
SeriesFCMJ-8521
Operating Temperature0°C ~ 70°C
Classification & Lifecycle
CategoryOptical Transceiver
TypeInterface
Part StatusObsolete

1x9 850 nm multimode optical transceiver, 1.25 Gb/s, SC duplex receptacle

Environmental & Export Classifications

RoHS Status
RoHS Compliant

Part Activity

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FCMJ-8521-3-J1 viewed on the web · Web User
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Specifications reviewed & updated · ZDI

Recent search and sourcing activity for FCMJ-8521-3-J1.

Engineering FAQ

FCMJ-8521-3-J1 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 FCMJ-8521-3-J1?
Data Rate: 1.25 Gb/s; Wavelength: 850 nm; Connector: SC duplex.
What package is FCMJ-8521-3-J1 supplied in?
FCMJ-8521-3-J1 is supplied in the 1x9 package, through hole, rated 0°C ~ 70°C.
Can ZDI source FCMJ-8521-3-J1 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

FCMJ-8521-3-J1 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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