W74M12FVSSIQ Equivalent & Substitute Parts

Part Overview

The W74M12FVSSIQ is a 128Mbit SPI/Quad I/O NAND Flash memory IC manufactured by Winbond Electronics in an 8-SOIC package. This device operates at 80 MHz with a supply voltage range of 2.7V to 3.6V and supports both SPI and Quad I/O interfaces for embedded storage applications.

The W74M12FVSSIQ has reached obsolete product status. Identifying compatible substitute parts is essential for maintaining design continuity, ensuring supply chain availability, and supporting long-term product maintenance and production requirements.

Substiute Parts

W74M12FVSSIQ

Winbond ElectronicsIn Stock: 1022W74M12FVSSIQ Datasheet

Current PartRFQ

W74M12JVSSIQ

Winbond ElectronicsIn Stock: 1049W74M12JVSSIQ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the W74M12FVSSIQ is determined by strict equivalence across the following critical parameters:

• Memory capacity: 128Mbit (16M x 8 organization)
• Memory interface: SPI - Quad I/O compatibility
• Package format: 8-SOIC surface mount
• Supply voltage: 2.7V ~ 3.6V operating range
• Operating temperature: -40°C ~ 85°C
• Non-volatile FLASH technology

The W74M12JVSSIQ qualifies as a direct substitute based on identical memory capacity, organization, interface protocol support, package type, voltage specifications, and temperature range. Both devices belong to the Winbond SpiFlash® series and maintain full electrical and mechanical compatibility within the specified parameters.

Parameter Comparison

Engineering Selection Recommendations

The W74M12JVSSIQ is the qualified substitute for the obsolete W74M12FVSSIQ. Both devices maintain identical compliance certifications (ROHS3 Compliant, REACH Unaffected) and equivalent moisture sensitivity ratings (MSL 1).

The W74M12JVSSIQ offers enhanced performance with a maximum clock frequency of 133 MHz compared to the 80 MHz specification of the main part, while maintaining full backward compatibility across all electrical and mechanical parameters. The substitute part is currently in active production status, ensuring supply chain availability and long-term support.

Both devices are housed in identical 8-SOIC packages with matching pinout configurations, enabling direct PCB-level substitution without layout modifications. Voltage supply requirements and operating temperature ranges are equivalent, confirming functional interchangeability within existing system designs.

Frequently Asked Questions (FAQ)

Q: Can the W74M12JVSSIQ be used as a direct replacement for the W74M12FVSSIQ?

A: Yes. The W74M12JVSSIQ is a direct substitute. Both devices share identical memory capacity (128Mbit), organization (16M x 8), interface protocol (SPI - Quad I/O), package format (8-SOIC), voltage specifications (2.7V ~ 3.6V), and operating temperature range (-40°C ~ 85°C). The substitute part is pin-compatible and requires no circuit modifications.

Q: What are the differences between these two parts?

A: The primary differences are product status and clock frequency. The W74M12FVSSIQ is obsolete, while the W74M12JVSSIQ is in active production. The W74M12JVSSIQ operates at a maximum frequency of 133 MHz compared to 80 MHz for the main part. The substitute also supports QPI (Quad Peripheral Interface) in addition to standard SPI - Quad I/O. Both maintain identical supply voltage and temperature specifications.

Q: Are there any package or pinout differences?

A: No. Both parts use the identical 8-SOIC package format with 0.209" width and 5.30mm body dimensions. Pinout configurations are equivalent, enabling direct PCB substitution without layout changes.

Q: What compliance certifications apply to the substitute part?

A: The W74M12JVSSIQ is ROHS3 Compliant and REACH Unaffected, matching the compliance profile of the main part. Both devices have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling.

Q: Is the higher clock frequency of the substitute part a concern for existing designs?

A: No. The W74M12JVSSIQ's 133 MHz maximum frequency is a performance enhancement that does not affect compatibility. Existing designs operating at 80 MHz will function correctly with the substitute part, as the device supports operation at lower frequencies within its specified range.