Equivalent & Substitute Parts for Renesas Electronics 7133SA20G

Part Overview

The Renesas Electronics 7133SA20G is a 32Kbit dual-port asynchronous SRAM with parallel interface, packaged in 68-PGA (29.46x29.46mm) through-hole configuration. This component operates at 20ns access time with 4.5V to 5.5V supply voltage and 0°C to 70°C temperature range. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs.

Key Parameters

Parameter	Value
Memory Type	Volatile SRAM
Memory Format	Dual Port, Asynchronous
Memory Size	32Kbit
Memory Organization	2K x 16
Memory Interface	Parallel
Access Time	20 ns
Write Cycle Time	20 ns
Voltage Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package Type	68-BPGA Through Hole

Substitute Part Grouping Explanation

Substitution eligibility for the 7133SA20G is determined by the following critical parameters:

Memory capacity (32Kbit) and organization (2K x 16)
Dual-port asynchronous SRAM technology
Parallel interface architecture
Supply voltage compatibility (4.5V ~ 5.5V)
Access and write cycle time specifications

Two substitute parts meet these criteria with the following distinctions:

7133LA20JG: Maintains identical electrical specifications (20ns access time, 4.5V ~ 5.5V supply) and memory organization. Primary difference is packaging format (68-PLCC surface mount versus 68-PGA through hole) and product status (active versus obsolete).

7133SA90GB: Maintains identical package type (68-PGA through hole) and memory organization. Primary differences are extended access time (90ns versus 20ns) and expanded operating temperature range (-55°C ~ 125°C versus 0°C ~ 70°C).

Parameter Comparison

Parameter	7133SA20G (Main)	7133LA20JG (Substitute)	7133SA90GB (Substitute)
Memory Size	32Kbit	32Kbit	32Kbit
Memory Organization	2K x 16	2K x 16	2K x 16
Memory Format	Dual Port Asynchronous	Dual Port Asynchronous	Dual Port Asynchronous
Memory Interface	Parallel	Parallel	Parallel
Access Time	20 ns	20 ns	90 ns
Write Cycle Time	20 ns	20 ns	90 ns
Voltage Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-55°C ~ 125°C
Package Type	68-BPGA Through Hole	68-PLCC Surface Mount	68-BPGA Through Hole
Product Status	Obsolete	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	Non-compliant

Engineering Selection Recommendations

7133LA20JG is the preferred substitute when electrical performance equivalence is the primary requirement. This part maintains identical access time (20ns) and supply voltage specifications. The transition from through-hole to surface-mount packaging requires PCB redesign. This part carries active product status and ROHS3 compliance, supporting long-term availability and regulatory requirements.

7133SA90GB is suitable for applications where package form factor (through-hole 68-PGA) must remain unchanged. The extended access time (90ns) and expanded operating temperature range (-55°C ~ 125°C) indicate this part targets industrial and extended-temperature applications. Selection of this part requires confirmation that system timing specifications accommodate the 90ns access time. This part maintains active product status but does not carry RoHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can 7133LA20JG directly replace 7133SA20G without circuit modification?

A: Electrical substitution is direct. The 20ns access time and 4.5V ~ 5.5V supply voltage are identical. PCB layout modification is required due to package change from through-hole 68-PGA to surface-mount 68-PLCC.

Q: Is 7133SA90GB suitable for timing-critical applications?

A: The 90ns access time is 4.5 times slower than the original 20ns specification. Substitution is valid only if system timing margins accommodate this extended access time. Review timing analysis before selection.

Q: What is the impact of RoHS3 compliance on part selection?

A: 7133LA20JG carries ROHS3 compliance, meeting current environmental and regulatory standards. 7133SA90GB does not carry this certification. Compliance requirements depend on end-product regulatory obligations and customer specifications.

Q: Are all three parts electrically compatible with 5V logic systems?

A: Yes. All three parts operate within the 4.5V ~ 5.5V supply range, compatible with standard 5V logic systems.

Q: What is the significance of the extended temperature range in 7133SA90GB?

A: The -55°C ~ 125°C operating range indicates this part is qualified for industrial, automotive, or military applications. The original 7133SA20G operates only within 0°C ~ 70°C commercial range. Extended temperature qualification does not affect substitution validity for commercial-temperature applications.

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