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UPD43256BCZ-70LL — DIP-24/28/40 package (representative)
DIP-24/28/40
Representative of package type
NEC Electronics Corp

UPD43256BCZ-70LL

SRAM · PDIP-28 · Memory
Part Status: Obsolete In demand
Data last refreshed Jun 20, 2026
Manufacturer
NEC Electronics Corp
Mfr Part #
UPD43256BCZ-70LL
Series
UPD43256
Category
SRAM
Datasheet
View datasheet ↗
Availability & Pricing
Unit PriceRequest a Quote
Sourcing channels16
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Product Attributes

Electrical & Parametric
Organization32K x 8
Access Time70 ns
Voltage5 V
Powerlow standby
Physical & Thermal
Package / CasePDIP-28
Mounting TypeThrough Hole
SeriesUPD43256
Operating Temperature0°C ~ 70°C
Classification & Lifecycle
CategorySRAM
TypeMemory
Part StatusObsolete

32K x 8 (256 Kb) Low-Power CMOS Static RAM, 70 ns

Environmental & Export Classifications

RoHS Status
Non-Compliant

Availability & Sourcing

16 sources
SourceMfrQtyDate CodeConditionStatus
Market NEC 1055 — — Available RFQ
Market NEC 192 — — Available RFQ
Market NEC 117 99 — Available RFQ
Market NEC 65 9807 — Available RFQ
Market NEC 30 — — Available RFQ
Market NEC ELECTRONICS 25 — — Available RFQ
Market NEC 20 — — Available RFQ
Market NEC 18 — — Available RFQ
Market NEC CORPORATION 14 0701 — Available RFQ
Market NEC 13 739 — Available RFQ
Market NEC 3000 25+ — Available RFQ
Market NEC 13012 — — Available RFQ
Market NEC 8862 24+ — Available RFQ
Market NEC 8486 22+ — Available RFQ
Market NEC 4426 15+ — Available RFQ
Market NECElec 4 200349 — Available RFQ

ZDI Stock — in our warehouse · Market — offers available through our sourcing network · Live — recent offers from our sourcing network.

Part Activity

recent searches, RFQs & offers
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UPD43256BCZ-70LL viewed on the web · Web User
UPD43256BCZ-70LL viewed on the web · Web User
UPD43256BCZ-70LL viewed on the web · Web User
UPD43256BCZ-70LL viewed on the web · Web User
UPD43256BCZ-70LL viewed on the web · Web User
UPD43256BCZ-70LL viewed on the web · Web User
UPD43256BCZ-70LL viewed on the web · Web User

Recent search and sourcing activity for UPD43256BCZ-70LL.

Engineering FAQ

UPD43256BCZ-70LL 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 UPD43256BCZ-70LL?
Organization: 32K x 8; Access Time: 70 ns; Voltage: 5 V; Power: low standby.
What package is UPD43256BCZ-70LL supplied in?
UPD43256BCZ-70LL is supplied in the PDIP-28 package, through hole, rated 0°C ~ 70°C.
Can ZDI source UPD43256BCZ-70LL 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

UPD43256BCZ-70LL 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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