ATMEL AT28C256E-15FM/883 (5962-88525 08 ZA)
- 256Kbit (32K × 8) high-endurance non-volatile parallel EEPROM
- 100,000 write cycle endurance — 10× the standard AT28C256
- 150ns access time for fast data retrieval in military processor interfaces
- Hermetic 28-lead ceramic flatpack for space-constrained defense platforms
- Qualified to MIL-STD-883 Class B military screening standards
Atmel (now Microchip Technology) developed the AT28C256E series specifically to address defense and aerospace applications where standard 10,000-cycle write endurance falls short — programs with frequent in-system firmware updates, adaptive mission parameter storage, or continuous onboard calibration logging demand a higher-endurance solution. The AT28C256E-15FM/883 is available from stock at Sparkle Electronics, a specialized distributor of military-grade and high-reliability electronic components serving defense prime contractors, aerospace OEMs, and government procurement programs worldwide. With MIL-STD-883 Class B screening, a hermetic 28-lead ceramic flatpack package, and DESC SMD number 5962-88525 08 ZA, this device is engineered for defense platforms where write-intensive operation and long-term environmental reliability are both mandatory requirements.
The FM flatpack package makes the AT28C256E-15FM/883 the preferred choice for space-constrained avionics assemblies, missile electronics, and high-density defense PCB designs where the height or footprint of a DIP or LCC package cannot be accommodated. At 150ns access time, the device interfaces directly with a broad range of military embedded processors without wait-state penalties, and carries full QPL traceability within the DLA qualified parts system for streamlined defense procurement. Contact Sparkle Electronics to confirm stock availability and request a same-day quote.
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DESC SMD Number: 5962-88525 08 ZA
The AT28C256E-15FM/883 is procurable under DESC Standard Military Drawing number 5962-88525 08 ZA, issued by the Defense Logistics Agency (DLA) Defense Electronics Supply Center. This SMD number places the part within the DLA Qualified Products List (QPL) system, enabling traceability from procurement through fielding for defense programs subject to MIL-SPEC sourcing requirements.
For procurement teams working under DLA source control, the SMD number is the authoritative reference for specifying this part on military contracts — not the commercial Atmel/Microchip part number alone. Sparkle Electronics supplies the AT28C256E-15FM/883 with full supporting documentation including certificate of conformance, screening test data, and country of origin documentation as required by defense procurement workflows. Contact our team to discuss QPL documentation requirements for your program.
AT28C256E-15FM/883: High-Endurance MIL-SPEC EEPROM for Write-Intensive Defense Applications
For most read-dominant military memory applications — boot code, fixed firmware, system configuration — a standard 10,000-cycle device is adequate. The AT28C256E-15FM/883 is specified for programs that cannot accept that limitation. Adaptive defense systems that continuously rewrite stored parameters in response to operational feedback, environmental sensor data, or mission reconfiguration commands will exhaust standard-endurance EEPROM well before platform end-of-life. The E option eliminates endurance as a failure mode, delivering 100,000 minimum write cycles under full MIL-STD-883 Class B screening.
Procurement engineers sourcing this part under long-tail search terms such as AT28C256E-15FM/883 aerospace distributor, 5962-88525 08 ZA stock, or MIL-STD-883 high endurance EEPROM flatpack will find Sparkle Electronics maintains ready inventory for immediate fulfillment. Request a quote and receive pricing and stock confirmation within 24 hours.
Why the Ceramic Flatpack Package Matters for Defense PCB Design
The 28F ceramic flatpack is a hermetic package optimized for high-density, low-profile military PCB assemblies. Where Cerdip and LCC packages impose height or footprint constraints in tightly packaged avionics line-replaceable units (LRUs) or missile electronics bays, the flatpack profile resolves those mechanical constraints without sacrificing hermetic sealing. MIL-STD-883 screening validates that the hermetic seal integrity of the ceramic flatpack meets the moisture resistance and hermeticity requirements demanded for airborne, shipboard, and space-qualified defense electronics. For programs where DIP and LCC packages physically cannot fit, the AT28C256E-15FM/883 is often the only MIL-STD-883 screened 256Kbit EEPROM that meets the mechanical envelope.
Understanding MIL-STD-883 Class B Screening for Defense EEPROM Procurement
MIL-STD-883 Class B screening is not a marketing claim — it is a defined set of mandatory test procedures applied to every device before shipment. For the AT28C256E-15FM/883, Class B screening includes 100% burn-in at elevated temperature to precipitate early-life failures, electrical characterization at both −55°C and +125°C temperature extremes to verify performance across the full military range, and hermeticity testing to confirm ceramic package seal integrity. These procedures are not performed on commercial or industrial-grade AT28C256 variants.
For DLA procurement under QPL traceability requirements, Class B screening also establishes the link between the device and its DESC SMD number 5962-88525 08 ZA. Procurement teams sourcing MIL-STD-883 EEPROM for DLA procurement or verifying QPL traceability for 5962-88525 can confirm Sparkle Electronics’ documentation capability by submitting an inquiry before placing an order.
Part Selection: E Option vs. Standard vs. Fast-Write
| Parameter | AT28C256E-15FM/883 | AT28C256-15FM/883 | AT28C256F-15FM/883 |
|---|---|---|---|
| Manufacturer | Atmel / Microchip | Atmel / Microchip | Atmel / Microchip |
| Availability | In Stock at Sparkle | — | — |
| Access Time | 150ns | 150ns | 150ns |
| Write Cycle Time | 10ms | 10ms | 3ms |
| Write Endurance | 100,000 cycles min | 10,000 cycles min | 10,000 cycles min |
| Package | 28-lead Ceramic Flatpack | 28-lead Ceramic Flatpack | 28-lead Ceramic Flatpack |
| Temperature Range | −55°C to +125°C | −55°C to +125°C | −55°C to +125°C |
| Screening | MIL-STD-883 Class B | MIL-STD-883 Class B | MIL-STD-883 Class B |
| SMD Number | 5962-88525 08 ZA | 5962-88525 06 ZA | 5962-88525 07 ZA |
The E option is correct for write-intensive applications. The F option trades write endurance for a faster 3ms write cycle time — appropriate where bulk reprogramming speed matters more than total cycle life. The standard variant suits read-dominant code and configuration storage. All three variants share identical pin-compatible parallel bus interfaces and software data protection command architecture, so migration between options requires only a BOM change.
Within the broader Atmel military EEPROM family available from Sparkle Electronics, the ATMEL AT28C256-25DM/883 offers standard endurance in a hermetic Cerdip package at 250ns for programs where write cycle life is not the primary design constraint. For higher storage density requirements under equivalent MIL-STD-883 Class B screening, the ATMEL AT28C010-12DM/883 provides 1Mbit capacity in a hermetic ceramic DIP package with a compatible parallel bus interface, enabling density migration without hardware redesign.
Frequently Asked Questions
What does AT28C256E-15FM/883 decode to?
AT28C = Atmel parallel EEPROM family; 256 = 256Kbit (262,144 bits); E = high endurance option (100,000 write cycles min); −15 = 150ns access time; F = 28-lead ceramic flatpack package; M = military temperature range (−55°C to +125°C); /883 = MIL-STD-883 Class B screening.
Where can I buy AT28C256E-15FM/883 in stock?
Sparkle Electronics maintains ready stock of the AT28C256E-15FM/883 for defense and aerospace procurement. Contact our team for current pricing, available quantity, and confirmed lead time. We serve defense prime contractors, government procurement offices, and aerospace systems integrators globally with same-day response on qualified inquiries.
What is the DESC SMD number for AT28C256E-15FM/883?
5962-88525 08 ZA — the Defense Electronics Supply Center Standard Military Drawing number for the AT28C256E-15FM/883, enabling full QPL traceability within the DLA defense procurement system. Sparkle Electronics supplies this part with full conformance documentation upon request.
What is the difference between the E option and the standard AT28C256-15FM/883?
The E suffix designates the high-endurance option: 100,000 write cycles minimum versus 10,000 for the standard device. All other specifications — access time, package, screening level, supply voltage, and military temperature range — are identical. The E option is specified when write-intensive operation over the platform service life would exhaust a standard-endurance device before end-of-life.
What makes the ceramic flatpack package relevant for defense applications?
The 28-lead ceramic flatpack provides MIL-STD-883 validated hermetic sealing in a low-profile form factor suited to space-constrained military PCB assemblies such as avionics LRUs and missile electronics bays. It is the preferred package for high-density defense boards where Cerdip or LCC height constraints are prohibitive, without any compromise to the hermetic protection required for airborne and long-duration operational environments.
Is AT28C256E-15FM/883 pin-compatible with other AT28C256 flatpack variants?
Yes. The AT28C256E-15FM/883 is fully pin-compatible with all AT28C256 variants in the 28F ceramic flatpack package, including the standard and F fast-write options. The parallel bus interface and software data protection command sequences are identical across all three. Migration from the standard to the E option requires no hardware redesign — only a part number change on the BOM.
Procuring AT28C256E-15FM/883 for a write-intensive defense or aerospace program? Sparkle Electronics stocks Atmel military EEPROM — including high-endurance E variants and hermetic flatpack packages — with full MIL-STD-883 and QPL documentation support. Submit an inquiry for same-day response on pricing, stock confirmation, and lead time.
