Renesas Electronics 7130SA35J SRAM Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7130SA35J is an 8Kbit dual-port asynchronous SRAM memory IC in a 52-PLCC package with 35 ns access time. This component is classified as obsolete, making identification of compatible substitute parts essential for system redesign, legacy equipment maintenance, and production continuity. The part operates within a 4.5V to 5.5V supply range and is suitable for parallel memory interface applications requiring volatile storage.

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	35 ns
Write Cycle Time	35 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 7130SA35J is determined by strict equivalence across the following critical parameters:

Memory Specifications: The substitute part must maintain identical memory size (8Kbit), organization (1K x 8), format (dual-port asynchronous SRAM), and interface type (parallel).

Electrical Compatibility: Supply voltage range (4.5V ~ 5.5V) and operating temperature range (0°C ~ 70°C) must be identical or encompassing.

Package Compatibility: The 52-PLCC (J-Lead) package footprint and surface mount mounting type are mandatory for direct board-level substitution.

Performance Characteristics: Access time and write cycle time must be equal to or faster than the original 35 ns specification to ensure timing compatibility in existing circuit designs.

The 7130LA20JG qualifies as a direct substitute based on these criteria, offering improved performance characteristics while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Parameter	7130SA35J (Original)	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	35 ns	20 ns
Write Cycle Time	35 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	RoHS non-compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

The 7130LA20JG is the qualified substitute for the obsolete 7130SA35J based on the following engineering criteria:

Functional Equivalence: Both parts are manufactured by Renesas Electronics and share identical memory specifications, electrical parameters, and package geometry. The substitute maintains full pin-for-pin and functional compatibility.

Performance Enhancement: The 7130LA20JG provides faster access and write cycle times (20 ns versus 35 ns), which is advantageous for timing-critical applications and introduces no compatibility risk in designs originally specified for the slower part.

Compliance Status: The 7130LA20JG holds ROHS3 compliance and active product status, ensuring long-term availability and regulatory alignment. The original part is RoHS non-compliant and obsolete.

Availability: The substitute part is currently in active production with confirmed inventory, whereas the original part is obsolete and subject to supply discontinuation.

Frequently Asked Questions (FAQ)

Q: Can the 7130LA20JG be used as a direct replacement for the 7130SA35J?

A: Yes. Both parts are identical in memory capacity (8Kbit), organization (1K x 8), package type (52-PLCC), and electrical specifications (4.5V ~ 5.5V supply, 0°C ~ 70°C operating range). The substitute offers faster performance without introducing compatibility issues.

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

A: The access time and write cycle time differ. The 7130SA35J operates at 35 ns, while the 7130LA20JG operates at 20 ns. This performance improvement in the substitute part is fully backward compatible with designs specified for the original part.

Q: Are there any package or pinout differences?

A: No. Both parts use the 52-PLCC (J-Lead) surface mount package with identical footprint and pinout. Board-level substitution requires no layout modifications.

Q: Why is the original part listed as obsolete?

A: The 7130SA35J is classified as obsolete by Renesas Electronics, indicating discontinued production and limited future availability. The 7130LA20JG remains in active production as the current equivalent offering.

Q: Does the substitute part meet current regulatory requirements?

A: Yes. The 7130LA20JG is ROHS3 compliant, whereas the original 7130SA35J is RoHS non-compliant. For applications requiring regulatory compliance, the substitute is the appropriate choice.

Q: Are there any thermal or voltage considerations for substitution?

A: No. Both parts operate within identical voltage supply ranges (4.5V ~ 5.5V) and temperature ranges (0°C ~ 70°C). No circuit modifications are required for thermal or electrical accommodation.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message