Equivalent & Substitute Parts for Renesas 7130SA70J

Part Overview

The Renesas 7130SA70J is an 8Kbit dual-port asynchronous SRAM with parallel interface, housed in a 52-PLCC package. This component is classified as obsolete, making equivalent or substitute parts necessary for new designs, repairs, or system upgrades. The 70 ns access time and 4.5V–5.5V supply voltage define its operational envelope. Due to its discontinued status, identifying compatible alternatives is essential for maintaining system functionality and ensuring supply chain continuity.

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	70 ns
Write Cycle Time	70 ns
Voltage Supply Range	4.5V – 5.5V
Operating Temperature	0°C – 70°C
Package Type	52-PLCC (J-Lead)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the 7130SA70J is determined by strict equivalence across the following parameters:

Memory Capacity & Organization: Substitute parts must maintain 8Kbit capacity with 1K x 8 organization to ensure address and data bus compatibility.
Memory Technology: Dual-port asynchronous SRAM architecture is required; no alternative memory types are acceptable.
Parallel Interface: The parallel memory interface must be preserved for direct pin-level compatibility.
Package & Pinout: The 52-PLCC (J-Lead) package is mandatory; alternative packages are not interchangeable.
Voltage Supply Range: Substitute parts must operate within the 4.5V–5.5V range to ensure compatibility with existing power distribution.
Operating Temperature Range: The 0°C–70°C specification must be maintained.
Access & Write Cycle Time: Substitute parts may have equal or faster timing specifications; slower timing is not acceptable.

The Renesas 7130LA20JG meets all substitution criteria and offers improved performance through faster access time (20 ns versus 70 ns) while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Parameter	7130SA70J (Main Part)	7130LA20JG (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Memory Type	Volatile SRAM	Volatile SRAM
Memory Format	Dual Port, Asynchronous	Dual Port, Asynchronous
Memory Size	8Kbit	8Kbit
Memory Organization	1K x 8	1K x 8
Memory Interface	Parallel	Parallel
Access Time	70 ns	20 ns
Write Cycle Time	70 ns	20 ns
Voltage Supply Range	4.5V – 5.5V	4.5V – 5.5V
Operating Temperature	0°C – 70°C	0°C – 70°C
Package Type	52-PLCC (J-Lead)	52-PLCC (J-Lead)
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
RoHS Status	Non-compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

The 7130LA20JG is the direct substitute for the 7130SA70J. Both components share identical memory capacity, organization, interface type, package configuration, and voltage specifications. The substitute part is currently in active production status, ensuring long-term availability and supply chain reliability.

The 7130LA20JG offers performance improvement through reduced access and write cycle times (20 ns versus 70 ns), which provides timing margin in systems originally designed for the 70 ns specification. This faster timing is backward-compatible and does not introduce timing violations in circuits designed for the original part.

The 7130LA20JG achieves ROHS3 compliance, whereas the original 7130SA70J is non-compliant. For applications subject to RoHS regulations or environmental compliance requirements, the substitute part satisfies these mandates without functional or electrical compromise.

Both parts maintain identical MSL ratings and thermal operating ranges, ensuring equivalent reliability and handling requirements during assembly and field deployment.

Frequently Asked Questions (FAQ)

Q: Can the 7130LA20JG be used as a direct replacement for the 7130SA70J in existing designs?

A: Yes. The 7130LA20JG is electrically and mechanically compatible with the 7130SA70J. Identical pinout, package, voltage supply range, and operating temperature range ensure direct substitution without circuit modification. The faster access time (20 ns) is backward-compatible with designs specified for 70 ns timing.

Q: What is the primary difference between these two parts?

A: The main differences are access time (70 ns versus 20 ns), product status (obsolete versus active), and RoHS compliance (non-compliant versus ROHS3 compliant). All other electrical and mechanical parameters are identical.

Q: Does the faster access time of the 7130LA20JG introduce any compatibility issues?

A: No. Faster memory access time does not create timing violations in circuits designed for slower components. The substitute part meets or exceeds all timing requirements of the original specification.

Q: Are the package dimensions and pinout identical?

A: Yes. Both parts use the 52-PLCC (J-Lead) package with dimensions of 19.13 x 19.13 mm. Pinout and footprint are identical, enabling direct PCB-level substitution.

Q: What is the RoHS compliance status of each part?

A: The 7130SA70J is RoHS non-compliant. The 7130LA20JG is ROHS3 compliant. For applications requiring RoHS certification, the substitute part is the appropriate choice.

Q: Are moisture sensitivity levels the same?

A: Yes. Both parts carry an MSL rating of 3 (168 Hours), requiring identical handling and storage protocols during assembly and field operations.

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