All Alternatives

Alternatives to STMicroelectronics M27C4002-10F1

STMicroelectronics M27C4002-10F1 and its qualified second sources, compared on form, fit and function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

Equivalent and substitute parts for STMicroelectronics M27C4002-10F1

M27C4002-10F1 compared against its qualified second sources
M27C4002-10F1STMicroelectronicsM27C4002-10B1STMicroelectronicsAT27C4096-55PUMicrochip Technology
FFF CompatibilityFeatures the exact same 40-pin DIP footprint and pinout, but lacks a quartz window.The housing is plastic (PDIP-40) instead of ceramic (CDIP-40) and has no transparent window.Electrical characteristics, timing, and read/write functionality are identical to the original part, albeit OTP.Has the exact same 40-pin DIP footprint and matching pin assignments, but uses a solid plastic package (PDIP) without a transparent quartz window.The physical package footprint is identical, but the housing material is plastic (PDIP-40) rather than ceramic (CDIP-40), lacking a quartz window.Functions identically for all read operations and features a much faster 55 ns access time to eliminate speed-reducing wait states.
AI Summary

M27C4002-10F1 by STMicroelectronics: EPROM - UV Memory IC 4Mbit Parallel 100 ns 40-CDIP Frit Seal with Window.

The M27C4002-10B1 is the OTP plastic sibling of the target part from STMicroelectronics, sharing the exact same 100 ns read timing. However, because it is obsolete and lacks UV-erasability, it is only a viable second-source replacement if found in legacy stock.

  • Same original manufacturer (STMicroelectronics) series sibling
  • Identical 100 ns timing and electrical read specifications
  • No changes required to existing firmware or reading hardware
  • Cannot be erased or reprogrammed (OTP only)
  • Obsolete part with limited market availability

The AT27C4096-55PU is a high-speed, active OTP variant that offers a massive speed improvement down to 55 ns. It acts as a perfect drop-in reading replacement, but like its 90 ns counterpart, it cannot be erased or reprogrammed.

  • Active and in production by Microchip Technology
  • Significantly faster read access time (55 ns vs 100 ns)
  • Wider industrial operating temperature range (-40°C to 85°C)
  • Cannot be erased or reprogrammed (OTP only)
  • Plastic package instead of ceramic
Lifecycle StatusObsoleteObsoleteObsolete
Market AvailabilityNon-stockDiscontinuedDiscontinued
REACHREACHREACHREACH
RoHSRoHSRoHSRoHS
——— ————————— ——— ———————— ———————— ————— ———
—————— ————————— ————————— ——— ———————— ——————
———— ————— ————— —————————— ————————— ——— ————
—— ————————— ———————— ————— —————————— ————
——— ————————— ——— ———————— ———————— ————— ———
—————— ————————— ————————— ——— ———————— ——————
———— ————— ————— —————————— ————————— ——— ————
—— ————————— ———————— ————— —————————— ————

Unlock the full comparison

Sign in with your work email to read every gated row on this table — description, lead time, origin, export control and the full technical data.

Sign in to unlock

Signing in creates a free Parter account. We use your name and email to contact you about Parter — see our Privacy Policy.

  • Find & compare verified second sources
  • Spot risk early with real-time part monitoring
  • Stay compliant and production-ready

Related parts

PartMarket availabilityLifecycleAlternatives available
M27C256B-10F1STMicroelectronicsNon-stockObsolete3Alternatives availableSee Alternatives
M27C256B-15F1STMicroelectronicsDiscontinuedObsolete4Alternatives availableSee Alternatives
K2401F1LittelfuseDiscontinuedObsolete1Alternatives availableSee Alternatives
2N7002LT1onsemiDiscontinuedObsolete4Alternatives availableSee Alternatives
2N7002STMicroelectronicsIn stockObsolete10Alternatives availableSee Alternatives
AM29F400BB-70EFInfineon TechnologiesDiscontinuedObsolete4Alternatives availableSee Alternatives

You searched one part. Parter watches your whole BOM.

  1. All your BOM, at once

    Parter maps every line to live stock, lead time, lifecycle and compliance data across the entire market — not part by part.

  2. Hear about problems before they hit production

    Allocation, EOL and last-time-buy notices surface the moment they appear, not when your buyer's PO bounces.

  3. Qualified replacements in minutes, not days

    Every at-risk line gets form-fit-function matches like the ones above — deltas flagged, evidence attached. Review, push to your BOM, and Parter starts watching the new part too.

Schedule a demo

See Parter in action

Discover how Parter can help your hardware team:

  • Streamline your hardware operations with AI
  • Detect and prevent lifecycle disruptions
  • Accelerate product development
  • Stay compliant and production-ready