Renesas Electronics 7130SA100JI8 SRAM Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7130SA100JI8 is an 8Kbit dual-port asynchronous SRAM with parallel interface, organized as 1K x 8, packaged in a 52-PLCC (19.13x19.13mm) surface mount configuration. This component operates at 100ns access time with a supply voltage range of 4.5V to 5.5V and temperature range of -40°C to 85°C. The part is currently classified as obsolete, making equivalent substitutes necessary for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Memory Type	Volatile SRAM
Memory Format	Dual Port, Asynchronous
Memory Size	8Kbit
Memory Organization	1K x 8
Memory Interface	Parallel
Access Time	100 ns
Write Cycle Time	100 ns
Supply Voltage	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	52-PLCC (J-Lead)
Mounting Type	Surface Mount
RoHS Status	Non-compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the 7130SA100JI8 is determined by the following critical parameters:

Mandatory Matching Parameters:

Memory Type: Volatile SRAM
Memory Format: Dual Port, Asynchronous
Memory Size: 8Kbit
Memory Organization: 1K x 8
Memory Interface: Parallel
Package Type: 52-PLCC (J-Lead)
Supply Voltage Range: 4.5V ~ 5.5V
Operating Temperature Range: -40°C ~ 85°C

Flexible Parameters (Substitution Allowed):

Access Time: Equal to or faster than 100ns
Write Cycle Time: Equal to or faster than 100ns
Product Status: Active parts preferred over obsolete
RoHS Compliance: Enhanced compliance acceptable

The Renesas Electronics 7130LA25JGI8 qualifies as a direct substitute by maintaining all mandatory electrical and mechanical parameters while offering improved performance characteristics and active product status.

Parameter Comparison

Parameter	7130SA100JI8 (Main Part)	7130LA25JGI8 (Substitute)	Compatibility
Memory Type	Volatile SRAM	Volatile SRAM	Identical
Memory Format	Dual Port, Asynchronous	Dual Port, Asynchronous	Identical
Memory Size	8Kbit	8Kbit	Identical
Memory Organization	1K x 8	1K x 8	Identical
Memory Interface	Parallel	Parallel	Identical
Access Time	100 ns	25 ns	Compatible (faster)
Write Cycle Time	100 ns	25 ns	Compatible (faster)
Supply Voltage	4.5V ~ 5.5V	4.5V ~ 5.5V	Identical
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Identical
Package Type	52-PLCC (J-Lead)	52-PLCC (J-Lead)	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Product Status	Obsolete	Active	Substitute is active
RoHS Status	Non-compliant	ROHS3 Compliant	Substitute offers compliance
MSL Rating	3 (168 Hours)	3 (168 Hours)	Identical

Engineering Selection Recommendations

The Renesas Electronics 7130LA25JGI8 is the qualified substitute for the obsolete 7130SA100JI8. Selection rationale is based on the following factors:

Product Status: The 7130LA25JGI8 maintains active product status, ensuring continued availability and manufacturing support. The original 7130SA100JI8 is obsolete, creating supply chain risk for ongoing applications.

Compliance Posture: The substitute part achieves ROHS3 compliance, whereas the main part is non-compliant. This upgrade aligns with modern regulatory requirements and environmental standards.

Performance Enhancement: The 7130LA25JGI8 delivers 25ns access and write cycle times, representing a 4x performance improvement over the 100ns specification of the original part. This faster timing is backward-compatible with systems designed for the slower original component.

Electrical and Mechanical Compatibility: Both parts maintain identical supply voltage ranges (4.5V ~ 5.5V), operating temperature ranges (-40°C ~ 85°C), package configuration (52-PLCC), and memory organization (1K x 8). Pin-for-pin compatibility is assured.

Frequently Asked Questions (FAQ)

Q: Can the 7130LA25JGI8 directly replace the 7130SA100JI8 in existing designs?

A: Yes. The substitute part maintains identical electrical specifications for supply voltage, operating temperature, memory organization, and package type. The faster access time (25ns vs. 100ns) is backward-compatible with circuits designed for the original 100ns part.

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

A: The 7130LA25JGI8 provides 25ns access time compared to the 7130SA100JI8's 100ns specification. Faster access time does not create compatibility issues in systems designed for slower components; the substitute will operate correctly in all timing-critical paths.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the identical 52-PLCC (J-Lead) surface mount package with 19.13x19.13mm dimensions. Pinout and mechanical compatibility are guaranteed.

Q: Why is RoHS compliance important for this substitution?

A: The 7130LA25JGI8 achieves ROHS3 compliance while the original 7130SA100JI8 is non-compliant. Modern manufacturing and procurement standards increasingly require RoHS-compliant components. The substitute part satisfies these regulatory requirements.

Q: Is the MSL (Moisture Sensitivity Level) rating the same for both parts?

A: Yes. Both parts carry an MSL rating of 3 (168 Hours), indicating identical moisture handling and storage requirements during manufacturing and assembly processes.

Q: What is the primary reason to transition from the 7130SA100JI8 to the 7130LA25JGI8?

A: The original part is obsolete, creating supply chain discontinuity. The substitute is an active product with improved performance characteristics and regulatory compliance, making it the appropriate choice for new designs and ongoing system support.

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