JS28F128M29EWHF Equivalent & Substitute Parts

Part Overview

The JS28F128M29EWHF is a 128Mbit NOR Flash memory IC manufactured by Micron Technology Inc., designed for parallel interface applications in 56-TSOP surface mount packaging. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement. The part operates across industrial temperature ranges (-40°C to 85°C) with supply voltage specifications of 2.7V to 3.6V, serving applications requiring non-volatile parallel memory storage.

Substiute Parts

JS28F128M29EWHF

Micron Technology Inc.In Stock: 3319JS28F128M29EWHF Datasheet

Current PartRFQ

MT28EW128ABA1HJS-0SIT

Micron Technology Inc.In Stock: 18088MT28EW128ABA1HJS-0SIT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete JS28F128M29EWHF is determined by strict equivalence across the following critical parameters:

• Memory capacity: 128Mbit
• Memory technology: FLASH - NOR
• Memory organization: 16M x 8, 8M x 16
• Parallel interface architecture
• Package form factor: 56-TFSOP
• Supply voltage range: 2.7V ~ 3.6V
• Operating temperature range: -40°C ~ 85°C
• RoHS3 compliance and MSL rating

The MT28EW128ABA1HJS-0SIT meets all substitution criteria while maintaining active product status and improved inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The MT28EW128ABA1HJS-0SIT serves as the direct substitute for the obsolete JS28F128M29EWHF. Both components are manufactured by Micron Technology Inc. and maintain identical electrical specifications across memory capacity, organization, interface type, supply voltage, and operating temperature range. Both parts carry ROHS3 compliance and equivalent MSL ratings.

The substitute part differs in access time (95 ns versus 70 ns) and write cycle time (60 ns versus 70 ns). The MT28EW128ABA1HJS-0SIT maintains active product status with significantly higher inventory availability (18005 units versus 3303 units), supporting long-term component procurement strategies.

Frequently Asked Questions (FAQ)

Q: Can MT28EW128ABA1HJS-0SIT directly replace JS28F128M29EWHF in existing designs?

A: Yes. Both parts share identical memory capacity, organization, parallel interface, package form factor, supply voltage range, and operating temperature specifications. Pin-to-pin compatibility is maintained across the 56-TFSOP package.

Q: What is the difference in access time between these parts?

A: The JS28F128M29EWHF specifies 70 ns access time, while the MT28EW128ABA1HJS-0SIT specifies 95 ns access time. This difference must be evaluated against system timing requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the JS28F128M29EWHF and MT28EW128ABA1HJS-0SIT are ROHS3 compliant and carry identical MSL ratings of 3 (168 Hours).

Q: Why is the original part listed as obsolete?

A: The JS28F128M29EWHF is classified as obsolete by the manufacturer. The MT28EW128ABA1HJS-0SIT represents the active product continuation with equivalent functional specifications.

Q: Are there packaging differences between these parts?

A: Both parts use 56-TFSOP surface mount packaging with identical physical dimensions (0.724", 18.40mm Width). The substitute is supplied in Tray packaging versus the original part specification.