JS28F512P30BFA Equivalent & Substitute Parts

Part Overview

The JS28F512P30BFA is a 512Mbit parallel NOR Flash memory IC manufactured by Micron Technology Inc., housed in a 56-TSOP package. This component operates at 40 MHz with 110 ns access time and requires a 1.7V to 2V supply voltage. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and component procurement.

Substiute Parts

JS28F512P30BFA

Micron Technology Inc.In Stock: 1523JS28F512P30BFA Datasheet

Current PartRFQ

MT28EW512ABA1LJS-0SIT

Micron Technology Inc.In Stock: 5731MT28EW512ABA1LJS-0SIT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the JS28F512P30BFA is determined by the following critical parameters:

• Memory Capacity: 512Mbit (non-negotiable)
• Memory Technology: FLASH - NOR (non-negotiable)
• Package Type: 56-TFSOP surface mount (non-negotiable for PCB compatibility)
• Memory Interface: Parallel (non-negotiable for signal compatibility)
• Operating Temperature Range: -40°C ~ 85°C (TA) (must match or exceed)
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)
• MSL Rating: 3 (168 Hours) (handling and storage requirement)

The MT28EW512ABA1LJS-0SIT qualifies as a substitute based on matching all critical parameters. Differences in access time (95 ns vs. 110 ns), write cycle time (60 ns vs. 110 ns), and supply voltage range (2.7V ~ 3.6V vs. 1.7V ~ 2V) represent performance improvements and expanded operational margins rather than incompatibilities.

Parameter Comparison

Engineering Selection Recommendations

The MT28EW512ABA1LJS-0SIT is a direct substitute for the obsolete JS28F512P30BFA. Both components are manufactured by Micron Technology Inc., maintain identical ROHS3 compliance and MSL ratings, and share the same 56-TFSOP package footprint and parallel interface architecture.

The substitute part offers improved performance characteristics: faster access time (95 ns vs. 110 ns) and reduced write cycle time (60 ns vs. 110 ns). The expanded supply voltage range (2.7V ~ 3.6V) accommodates broader system power supply specifications compared to the original part's 1.7V ~ 2V requirement.

The active product status of MT28EW512ABA1LJS-0SIT ensures ongoing availability and manufacturing support, eliminating procurement risk associated with the obsolete JS28F512P30BFA.

Frequently Asked Questions (FAQ)

Q: Can MT28EW512ABA1LJS-0SIT be used as a direct replacement for JS28F512P30BFA?

A: Yes. Both parts share identical memory capacity (512Mbit), technology (FLASH - NOR), package type (56-TFSOP), interface (Parallel), and operating temperature range (-40°C ~ 85°C). The substitute meets all regulatory requirements (ROHS3, MSL 3).

Q: What are the differences in electrical performance?

A: The substitute offers faster access time (95 ns vs. 110 ns) and reduced write cycle time (60 ns vs. 110 ns). The supply voltage range differs: the substitute operates at 2.7V ~ 3.6V versus the original's 1.7V ~ 2V. These represent performance improvements compatible with the original design specifications.

Q: Are the packages physically identical?

A: Yes. Both components use the 56-TFSOP package with identical dimensions (0.724", 18.40mm Width). PCB footprints and mounting requirements are identical.

Q: Why is the original part obsolete?

A: The JS28F512P30BFA is classified as obsolete by the manufacturer. The MT28EW512ABA1LJS-0SIT maintains active product status with ongoing manufacturing support.

Q: Are there any compatibility concerns with the different supply voltage ranges?

A: The substitute's expanded voltage range (2.7V ~ 3.6V) is compatible with systems designed for the original part's 1.7V ~ 2V range. System power supply specifications must be verified to ensure operation within the substitute's voltage window.