Renesas Electronics 7130LA100C SRAM Equivalent & Substitute Parts

Part Overview

The 7130LA100C is an 8Kbit dual-port asynchronous SRAM manufactured by Renesas Electronics Corporation. This parallel interface memory device operates with a 100 ns access time and write cycle time, designed for through-hole mounting in 48-DIP packaging. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance, legacy equipment repair, and design updates. Substitute parts must maintain core electrical specifications including memory capacity, interface type, voltage supply range, and operating temperature range to ensure direct compatibility.

Substiute Parts

7130LA100C

Renesas Electronics CorporationIn Stock: 9067130LA100C Datasheet

Current PartRFQ

7130LA20JG

Renesas Electronics CorporationIn Stock: 9327130LA20JG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7130LA100C is determined by strict adherence to the following core parameters:

Critical Compatibility Parameters:

• Memory capacity: 8Kbit (1K x 8 organization)
• Memory type: Dual-port asynchronous SRAM
• Interface: Parallel
• Voltage supply: 4.5V ~ 5.5V
• Operating temperature: 0°C ~ 70°C
• Base product number: 7130LA series

Performance Considerations: Access time and write cycle time may be faster than the original specification without affecting compatibility. Substitute parts with 20 ns or faster performance are electrically compatible with systems designed for 100 ns operation.

Packaging Constraint: The 7130LA100C uses through-hole 48-DIP mounting. Substitute parts may use alternative packaging (surface mount, different pin count) only when system redesign or adapter solutions are feasible. Direct pin-compatible replacements are preferred for retrofit applications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Retrofit Applications: The 7130LA100C is obsolete. The 7130LA20JG is the active equivalent from Renesas Electronics, maintaining identical memory capacity, organization, interface type, voltage supply range, and operating temperature specifications. The 7130LA20JG offers superior performance with 20 ns access and write cycle times, which is backward-compatible with systems designed for 100 ns operation.

Packaging Consideration: The primary difference between these parts is packaging: 48-DIP through-hole versus 52-LCC surface mount. Direct socket replacement is not possible without mechanical adaptation. System redesign or use of adapter solutions is required for the 7130LA20JG in legacy through-hole applications.

Compliance Status: The 7130LA20JG is ROHS3 compliant with active product status, whereas the 7130LA100C is obsolete and non-compliant. For new designs or systems requiring regulatory compliance, the 7130LA20JG is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the 7130LA20JG directly replace the 7130LA100C in an existing circuit board?

A: Electrical compatibility is confirmed. Both parts share identical memory specifications, voltage supply range, and operating temperature. However, direct socket replacement is not possible due to different packaging: the original uses 48-DIP through-hole mounting while the substitute uses 52-LCC surface mount. Mechanical adaptation or board redesign is required.

Q: Why is the 7130LA20JG faster (20 ns vs. 100 ns) still compatible?

A: Faster access and write cycle times do not create compatibility issues in systems designed for slower operation. The 7130LA20JG meets or exceeds all timing requirements of the original specification, ensuring functional compatibility without modification to system timing parameters.

Q: What is the difference between 48-DIP and 52-LCC packaging?

A: 48-DIP (Dual In-line Package) is a through-hole component with pins inserted into PCB holes. 52-LCC (Leadless Chip Carrier with J-leads) is a surface-mount component soldered directly to PCB pads. These require different PCB layouts and assembly processes.

Q: Is the 7130LA20JG suitable for new product designs?

A: Yes. The 7130LA20JG is active product status with ROHS3 compliance, making it appropriate for new designs. The 7130LA100C is obsolete and should not be specified for new applications.

Q: Are there other substitute parts available?

A: The 7130LA20JG is the primary active equivalent. Additional substitutes within the 7130LA series (such as 7130LA25JGI and 7140LA20JG) may exist but require individual parameter verification against your specific application requirements.