IS62WV5128DBLL-45BLI Equivalent & Substitute Parts

Part Overview

The IS62WV5128DBLL-45BLI is a 4Mbit asynchronous SRAM memory IC manufactured by ISSI (Integrated Silicon Solution Inc). This parallel interface memory device is packaged in a 36-TFBGA (6x8) form factor and operates across a supply voltage range of 2.3V to 3.6V with an access time of 45 nanoseconds. The part is currently discontinued at DiGi Electronics, making identification of compatible substitute components essential for ongoing production support, design revisions, and inventory management. Equivalent parts must maintain identical electrical specifications, memory organization, and package compatibility to ensure direct replacement without circuit redesign.

Key Parameters

Parameter	Specification
Memory Size	4Mbit
Memory Organization	512K x 8
Memory Format	SRAM
Technology	SRAM - Asynchronous
Memory Interface	Parallel
Access Time	45 ns
Write Cycle Time	45 ns
Package / Case	36-TFBGA (6x8)
Mounting Type	Surface Mount
Operating Temperature Range	-40°C ~ 85°C (TA)
Moisture Sensitivity Level (MSL)	3 (168 Hours)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the IS62WV5128DBLL-45BLI is determined by strict equivalence across the following critical parameters:

Memory capacity and organization must remain constant at 4Mbit with 512K x 8 configuration to maintain address and data bus compatibility. The asynchronous SRAM technology and parallel interface are non-negotiable functional requirements. Access time and write cycle time specifications of 45 nanoseconds establish the performance baseline; substitute parts must meet or exceed this timing specification. The 36-TFBGA (6x8) package is mandatory for PCB footprint compatibility. Operating temperature range of -40°C to 85°C and MSL rating of 3 must be maintained. Supply voltage tolerance, RoHS compliance, and manufacturer certification status are secondary parameters that may vary within acceptable ranges without affecting core functionality.

The IS62WV5128EBLL-45BLI qualifies as a direct substitute based on identical memory specifications, package geometry, timing characteristics, and compliance certifications.

Parameter Comparison

Parameter	IS62WV5128DBLL-45BLI (Main)	IS62WV5128EBLL-45BLI (Substitute)
Manufacturer	ISSI	ISSI
Memory Size	4Mbit	4Mbit
Memory Organization	512K x 8	512K x 8
Memory Format	SRAM	SRAM
Technology	SRAM - Asynchronous	SRAM - Asynchronous
Memory Interface	Parallel	Parallel
Access Time	45 ns	45 ns
Write Cycle Time	45 ns	45 ns
Voltage - Supply	2.3V ~ 3.6V	2.2V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	36-TFBGA (6x8)	36-TFBGA (6x8)
Mounting Type	Surface Mount	Surface Mount
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics	Active
Packaging	Not specified	Tray

Engineering Selection Recommendations

The IS62WV5128EBLL-45BLI is the qualified substitute for the discontinued IS62WV5128DBLL-45BLI. Both parts are manufactured by ISSI and share identical core memory specifications, timing characteristics, and package geometry. The substitute part maintains active product status, ensuring continued availability and supply chain reliability. Both components are ROHS3 compliant and carry equivalent moisture sensitivity ratings. The substitute exhibits a marginally lower minimum supply voltage threshold (2.2V versus 2.3V), which provides enhanced operational flexibility without compromising circuit performance. Tray packaging of the substitute part is standard for production quantities and does not affect functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can IS62WV5128EBLL-45BLI be used as a direct replacement for IS62WV5128DBLL-45BLI without PCB modifications?

A: Yes. Both parts utilize identical 36-TFBGA (6x8) package geometry, pin configuration, and electrical interface specifications. No PCB layout changes are required for substitution.

Q: What is the significance of the different packaging designation (Tray versus unspecified)?

A: Packaging designation refers to the shipping and handling container format. Tray packaging is standard for production volumes and does not affect the component's electrical performance or PCB mounting characteristics.

Q: Are the supply voltage ranges compatible with existing circuit designs?

A: The substitute part operates across 2.2V to 3.6V compared to the original 2.3V to 3.6V. This expanded lower voltage tolerance is backward compatible with designs specified for the original part. Circuits operating at or above 2.3V experience no functional difference.

Q: Do both parts meet the same compliance and certification standards?

A: Yes. Both IS62WV5128DBLL-45BLI and IS62WV5128EBLL-45BLI are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings of 3 (168 Hours). Compliance documentation is equivalent.

Q: What is the primary reason for substitution?

A: The original part number IS62WV5128DBLL-45BLI is discontinued at DiGi Electronics. The IS62WV5128EBLL-45BLI maintains active product status and identical specifications, providing uninterrupted supply for production and design support.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message