EPCQ16SI8N Equivalent & Substitute Parts

Part Overview

The EPCQ16SI8N is a 16Mb in-system programmable configuration device manufactured by Intel in the EPCQ series. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement. The device functions as a memory integrated circuit for configuration applications, housed in an 8-SOIC surface mount package. Due to its obsolete status, locating functionally compatible alternatives is essential for system maintenance and new production requirements.

Substiute Parts

EPCQ16SI8N

IntelIn Stock: 20164EPCQ16SI8N Datasheet

Current PartRFQ

EPCQ16ASI8N

IntelIn Stock: 28354EPCQ16ASI8N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EPCQ16SI8N is determined by strict equivalence across the following critical parameters:

• Memory Capacity: 16Mb (non-negotiable for functional compatibility)
• Package Configuration: 8-SOIC surface mount form factor with identical physical dimensions
• Voltage Supply Range: 2.7V ~ 3.6V (must support the same operating voltage window)
• Temperature Operating Range: -40°C ~ 85°C (thermal envelope must be maintained)
• Programmable Interface: In-system programmability requirement
• Moisture Sensitivity Level: MSL 3 (168 Hours) for handling and storage compatibility

The EPCQ16ASI8N qualifies as a direct substitute based on complete alignment with all parameters listed above. The primary distinction is product status: EPCQ16ASI8N is active and available, whereas EPCQ16SI8N is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The EPCQ16ASI8N is the qualified substitute for EPCQ16SI8N based on the following engineering criteria:

Functional Equivalence: All electrical and mechanical parameters are identical, ensuring direct pin-for-pin and functional compatibility in existing circuit designs.

Product Status: EPCQ16ASI8N maintains active production status with verified inventory availability (28,332 units), eliminating supply chain risk associated with the obsolete EPCQ16SI8N.

Compliance Advantage: EPCQ16ASI8N carries RoHS Compliant certification, meeting modern regulatory requirements for electronic components. This status supports long-term design compliance and procurement standards.

Certification Alignment: Both parts maintain identical REACH Unaffected status and equivalent moisture sensitivity specifications, ensuring handling and storage procedures remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can EPCQ16ASI8N be used as a direct replacement for EPCQ16SI8N in existing designs?

A: Yes. The EPCQ16ASI8N provides complete functional and physical compatibility. All electrical parameters, package dimensions, and programmable interface specifications are identical. No circuit modifications are required.

Q: What is the primary difference between these two parts?

A: The EPCQ16SI8N is obsolete and no longer in production. The EPCQ16ASI8N is the active equivalent from the same manufacturer, with improved compliance status (RoHS Compliant) and current availability.

Q: Are the package dimensions identical?

A: Yes. Both parts use the 8-SOIC package with 0.154" width and 3.90mm physical dimensions. PCB footprints and assembly processes are interchangeable.

Q: Do voltage and temperature specifications differ?

A: No. Both parts operate across the identical voltage range (2.7V ~ 3.6V) and temperature range (-40°C ~ 85°C). System design parameters remain unchanged.

Q: What is the moisture sensitivity implication?

A: Both parts carry MSL 3 (168 Hours) rating. Storage, handling, and reflow procedures are identical for both components.

Q: Is RoHS compliance a functional requirement?

A: RoHS compliance is a regulatory and procurement consideration rather than a functional parameter. EPCQ16ASI8N's RoHS Compliant status aligns with modern environmental and supply chain standards.