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27C256 — DIP-24/28/40 package (representative)
DIP-24/28/40
Representative of package type
WAFER/DIE

27C256

EPROM · DIP-28 (ceramic window) · Memory
In stock at ZDI Part Status: Obsolete In demand
Manufacturer
WAFER/DIE
Mfr Part #
27C256
Series
27C256
Category
EPROM
Datasheet
View datasheet ↗
Availability & Pricing
ZDI Stock74 pcs
Date Codes9622+, 9621, 9314, 8829
PackagingPartial Reels, Tubed
Unit PriceRequest a Quote
Sourcing channels7
Request a Quote → Check Live Availability

Live pricing on request · most quotes same business day

Product Attributes

Electrical & Parametric
Organization32K x 8
Voltage5 V
TypeUV EPROM
Physical & Thermal
Package / CaseDIP-28 (ceramic window)
Mounting TypeThrough Hole
Series27C256
Operating Temperature0°C ~ 70°C
Classification & Lifecycle
CategoryEPROM
TypeMemory
Part StatusObsolete

256 Kbit (32K x 8) UV-erasable CMOS PROM, 5 V

Environmental & Export Classifications

RoHS Status
Non-Compliant

Availability & Sourcing

8 source rows · masked
SourceMfrQtyDate CodeConditionStatus
ZDI Stock WAFER/DIE 74 9622+, 9621, 9314, 8829 New In Stock RFQ
Live WAFER 302 Live · fresh RFQ
Market WAFER 302 Available RFQ
Market Micron 19 Available RFQ
Market Intel 1 Available RFQ
Market General Electri 1 198746 Available RFQ
Market General Instrum 11 1987 Available RFQ
Market TI 1 Available RFQ

ZDI Stock — held in our warehouse · Market — recent offers, sourced on request · Live — fresh from the broker network. Supplier identity and cost are never shown.

Part Activity

recent searches, RFQs & offers
27C256 searched via the web · Web User
27C256 searched via the web · Web User
27C256 searched via the web · Web User
27C256 searched via the web · Web User
27C256 searched via the web · Web User
27C256 searched via the web · Web User
27C256 searched via the web · Web User
27C256 searched via the web · Web User

Live search & sourcing activity for 27C256 — real inquiries only.

Engineering FAQ

answers from this part's real data
27C256 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 quantity and packaging is 27C256 in ZDI stock?
ZDI holds 74 pcs, packaged as Partial Reels, Tubed, date code(s) 9622+, 9621, 9314, 8829. Request a quote for confirmed quantity, lead time, and pricing.
What are the key specifications of 27C256?
Organization: 32K x 8; Voltage: 5 V; Type: UV EPROM.
What package is 27C256 supplied in?
27C256 is supplied in the DIP-28 (ceramic window) package, through hole, rated 0°C ~ 70°C.
Can ZDI source 27C256 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

27C256 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.

Need 27C256?

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

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