Equivalent & Substitute Parts for Renesas 7130SA15PDG SRAM Memory IC

Part Overview

The Renesas 7130SA15PDG is an 8Kbit dual-port asynchronous SRAM memory integrated circuit designed for parallel data interface applications. This component features a 15 ns access time and operates within a 4.5V to 5.5V supply voltage range. The device is classified as obsolete, necessitating identification of functionally equivalent substitute components for ongoing system support and new design implementations. The original 48-PDIP through-hole package configuration requires evaluation against modern surface-mount alternatives to accommodate current manufacturing processes.

Substiute Parts

7130SA15PDG

Renesas Electronics CorporationIn Stock: 9737130SA15PDG Datasheet

Current PartRFQ

7130LA20JG

Renesas Electronics CorporationIn Stock: 9327130LA20JG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7130SA15PDG is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Memory capacity: 8Kbit (1K x 8 organization)
• Memory technology: Dual-port asynchronous SRAM
• Memory interface: Parallel
• Supply voltage range: 4.5V to 5.5V
• Operating temperature range: 0°C to 70°C
• Access time: Equal to or faster than 15 ns
• Write cycle time: Equal to or faster than 15 ns

Package Considerations: The original 48-PDIP through-hole package may be substituted with alternative package types (such as 52-PLCC surface mount) provided all electrical parameters remain within specification and the substitute part maintains the same memory organization and interface characteristics.

The identified substitute, Renesas 7130LA20JG, meets all critical electrical parameters with a slightly longer access time (20 ns) and write cycle time (20 ns), both within acceptable tolerance for most applications requiring the original 15 ns specification. The transition from through-hole to surface-mount packaging reflects current manufacturing standards.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The 7130SA15PDG is classified as obsolete, while the 7130LA20JG substitute maintains active product status with current manufacturing support. Selection of the active substitute ensures long-term component availability and supply chain continuity.

Compliance and Certification: The 7130LA20JG substitute is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original 7130SA15PDG compliance status is not specified in available documentation.

Timing Performance: The substitute exhibits a 5 ns increase in both access time and write cycle time (20 ns versus 15 ns). This timing differential must be evaluated against system-level timing margins. Applications with critical timing constraints operating at the original 15 ns specification may require detailed timing analysis to confirm compatibility.

Package Technology Transition: Migration from 48-PDIP through-hole to 52-PLCC surface-mount packaging requires PCB redesign and assembly process modification. This transition aligns with modern manufacturing capabilities but necessitates hardware revision.

Inventory and Availability: Both components maintain current inventory stock levels (918 units for the main part, 868 units for the substitute), supporting immediate procurement decisions.

Frequently Asked Questions (FAQ)

Q: Can the 7130LA20JG directly replace the 7130SA15PDG in existing designs?

A: Electrical substitution is feasible provided system timing margins accommodate the 5 ns increase in access and write cycle times. However, physical substitution requires PCB redesign due to package differences (48-DIP through-hole versus 52-PLCC surface-mount). Pin-to-pin compatibility cannot be assumed without detailed pinout verification.

Q: What is the significance of the timing difference between 15 ns and 20 ns?

A: The 5 ns timing increase represents a 33% reduction in speed. Applications operating at maximum frequency or with minimal timing margins may experience functional degradation. Applications with timing headroom will tolerate this difference without performance impact.

Q: Why does the substitute use a different package type?

A: The transition from through-hole (48-DIP) to surface-mount (52-PLCC) reflects industry manufacturing evolution. Surface-mount technology enables higher density PCB layouts and automated assembly processes. The 52-PLCC package accommodates the same memory organization within a more compact footprint suitable for modern production standards.

Q: Are there additional substitutes beyond the 7130LA20JG?

A: The 7130LA20JG documentation references secondary substitutes (7130LA25JGI and 7140LA20JG). These components require independent evaluation against the same critical parameters: 8Kbit capacity, 1K x 8 organization, dual-port asynchronous architecture, parallel interface, and 4.5V to 5.5V supply voltage compatibility.

Q: What compliance certifications apply to the substitute?

A: The 7130LA20JG is ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.32.0041. Moisture sensitivity level is rated at MSL 3 (168 hours), requiring appropriate handling and storage protocols during assembly operations.

Q: How does the Moisture Sensitivity Level (MSL) rating affect component handling?

A: MSL 3 classification indicates the component must be stored in controlled humidity environments and has a 168-hour floor life after moisture exposure. Proper baking procedures and moisture barrier packaging are required prior to assembly to prevent solder joint defects and component failure.