SST25PF080B-80-4C-S2AE Equivalent & Substitute Parts

Part Overview

The SST25PF080B-80-4C-S2AE is an 8Mbit SPI FLASH memory IC manufactured by Microchip Technology, designed for non-volatile data storage applications requiring serial peripheral interface communication at 80 MHz. This part operates across a supply voltage range of 2.3V to 3.6V and is housed in an 8-SOIC surface mount package.

The SST25PF080B-80-4C-S2AE is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy systems utilizing this memory IC.

Key Parameters

Parameter	Value
Memory Size	8Mbit
Memory Organization	1M x 8
Memory Interface	SPI
Clock Frequency	80 MHz
Write Cycle Time	10µs
Voltage Supply Range	2.3V ~ 3.6V
Operating Temperature	0°C ~ 70°C
Package Type	8-SOIC (0.209", 5.30mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the SST25PF080B-80-4C-S2AE is determined by the following critical parameters that must remain compatible:

Memory Capacity: 8Mbit (1M x 8 organization) — substitute parts must provide identical storage capacity
Memory Interface: SPI — substitute parts must support serial peripheral interface protocol
Package Type: 8-SOIC with 0.209" width and 5.30mm physical dimensions — substitute parts must use identical package footprint for PCB compatibility
Voltage Supply Range: Substitute parts must operate within or encompass the 2.3V ~ 3.6V range
Operating Temperature Range: 0°C ~ 70°C — substitute parts must support this temperature specification
Write Cycle Time: 10µs — substitute parts must maintain this timing specification
RoHS Compliance: ROHS3 Compliant — substitute parts must maintain equivalent environmental compliance

The SST25VF080B-50-4C-S2AF meets these substitution criteria while offering active product status and verified programmability.

Parameter Comparison

Parameter	SST25PF080B-80-4C-S2AE (Main Part)	SST25VF080B-50-4C-S2AF (Substitute)
Manufacturer	Microchip Technology	Microchip Technology
Memory Size	8Mbit	8Mbit
Memory Organization	1M x 8	1M x 8
Memory Interface	SPI	SPI
Clock Frequency	80 MHz	50 MHz
Write Cycle Time	10µs	10µs
Voltage Supply Range	2.3V ~ 3.6V	2.7V ~ 3.6V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C
Package Type	8-SOIC (0.209", 5.30mm Width)	8-SOIC (0.209", 5.30mm Width)
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

The SST25VF080B-50-4C-S2AF is the qualified substitute for the obsolete SST25PF080B-80-4C-S2AE based on the following factors:

Product Status: The substitute part maintains active product status with Microchip Technology, ensuring ongoing availability and supply chain support compared to the obsolete main part.

Compliance & Certification: Both parts maintain ROHS3 compliance and identical MSL ratings, ensuring equivalent environmental and handling requirements.

Electrical Compatibility: The substitute part operates within the voltage supply range of the main part (2.7V ~ 3.6V encompasses the upper portion of 2.3V ~ 3.6V). Clock frequency is reduced from 80 MHz to 50 MHz; this represents a functional downgrade in maximum operating speed but maintains full SPI protocol compatibility and identical write cycle timing.

Physical Compatibility: Identical 8-SOIC package footprint ensures direct PCB-level substitution without layout modifications.

Programmability: The substitute part is verified as programmable through DiGi-Electronics, confirming functional validation.

Frequently Asked Questions (FAQ)

Q: Can the SST25VF080B-50-4C-S2AF directly replace the SST25PF080B-80-4C-S2AE on existing PCBs?

A: Yes. Both parts use identical 8-SOIC package footprints with matching pin configurations and spacing. No PCB layout modifications are required for physical substitution.

Q: What is the impact of the reduced clock frequency (80 MHz to 50 MHz)?

A: The substitute part operates at a maximum SPI clock frequency of 50 MHz compared to 80 MHz on the main part. This represents a reduction in maximum data transfer rate. Applications operating at or below 50 MHz will experience no functional impact. Applications requiring 80 MHz operation must evaluate whether 50 MHz performance is acceptable for their specific use case.

Q: Are there voltage supply differences between these parts?

A: The main part operates from 2.3V to 3.6V, while the substitute operates from 2.7V to 3.6V. The substitute part has a higher minimum voltage threshold. Systems operating below 2.7V will require the original part or alternative solutions.

Q: Do both parts have identical write cycle timing?

A: Yes. Both parts maintain a 10µs write cycle time for word and page operations, ensuring equivalent write performance.

Q: What is the significance of the "Verified" programmability status on the substitute part?

A: The substitute part has been validated as programmable through DiGi-Electronics testing, confirming functional compatibility with standard SPI programming protocols and procedures.

Q: Are the moisture sensitivity levels identical?

A: Yes. Both parts carry an MSL rating of 3 (168 Hours), requiring identical handling, storage, and reflow procedures.

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