Equivalent & Substitute Parts for 71V124SA12TYGI

Part Overview

The 71V124SA12TYGI is a 1Mbit asynchronous SRAM memory IC manufactured by Renesas Electronics Corporation, configured as 128K x 8 with parallel interface and 12 ns access time. This component operates at 3V to 3.6V supply voltage across the industrial temperature range of -40°C to 85°C, packaged in 32-SOJ surface mount configuration.

The 71V124SA12TYGI carries Last Time Buy status, indicating discontinued production. Equivalent and substitute parts are necessary to maintain design continuity and ensure long-term component availability for new production runs and field replacements.

Key Parameters

Parameter	Value
Memory Size	1Mbit
Memory Organization	128K x 8
Memory Format	SRAM
Memory Interface	Parallel
Access Time	12 ns
Voltage Supply Range	3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Package / Case	32-BSOJ (0.300", 7.62mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 71V124SA12TYGI is determined by the following critical parameters:

Memory Capacity & Organization: 1Mbit, 128K x 8 configuration (non-negotiable)
Memory Type & Technology: Volatile SRAM, Asynchronous (non-negotiable)
Parallel Interface: Required for pin-compatible replacement
Package: 32-BSOJ surface mount form factor (non-negotiable)
Access Time: 12 ns or faster (backward compatible)
Supply Voltage: 3V to 3.6V range (compatible with design)
Operating Temperature: -40°C to 85°C minimum (industrial grade)
Compliance: ROHS3 compliant, REACH unaffected

Substitute parts must meet all non-negotiable parameters. Access time faster than 12 ns is acceptable as it maintains timing compatibility. Operating temperature ranges equal to or exceeding -40°C to 85°C are acceptable.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Organization	Access Time (ns)	Supply Voltage	Temp Range (°C)	Package	Product Status
71V124SA12TYGI	Renesas Electronics	1Mbit	128K x 8	12	3.0 ~ 3.6V	-40 ~ 85	32-BSOJ	Last Time Buy
71V124SA15TYGI	Renesas Electronics	1Mbit	128K x 8	15	3.0 ~ 3.6V	-40 ~ 85	32-BSOJ	Last Time Buy
AS7C31025B-12TJIN	Alliance Memory, Inc.	1Mbit	128K x 8	12	3.0 ~ 3.6V	-40 ~ 85	32-BSOJ	Active
IS63LV1024L-10JLI-TR	ISSI	1Mbit	128K x 8	10	3.15 ~ 3.45V	-40 ~ 85	32-BSOJ	Active
IS63LV1024L-12JL-TR	ISSI	1Mbit	128K x 8	12	3.0 ~ 3.6V	0 ~ 70	32-BSOJ	Active
IS63WV1024BLL-12JLI	ISSI	1Mbit	128K x 8	12	3.0 ~ 3.6V	-40 ~ 85	32-BSOJ	Active
IS63WV1024BLL-12JLI-TR	ISSI	1Mbit	128K x 8	12	3.0 ~ 3.6V	-40 ~ 85	32-BSOJ	Active

Engineering Selection Recommendations

Primary Substitutes (Identical Specifications)

AS7C31025B-12TJIN and IS63WV1024BLL-12JLI-TR are direct functional equivalents with Active product status. Both maintain 12 ns access time, 3.0V to 3.6V supply range, and -40°C to 85°C operating temperature. IS63WV1024BLL-12JLI-TR offers the highest inventory availability (17,675 pcs) and Tape & Reel packaging for automated assembly. AS7C31025B-12TJIN provides equivalent performance with Tube packaging.

Secondary Substitutes (Timing Compatible)

IS63WV1024BLL-12JLI (Tube packaging, 694 pcs inventory) and IS63LV1024L-10JLI-TR (10 ns access time, 877 pcs inventory) are functionally compatible. The IS63LV1024L-10JLI-TR offers faster access time with narrower supply voltage tolerance (3.15V to 3.45V), requiring design verification for voltage margin compatibility.

Conditional Substitute (Temperature Limitation)

IS63LV1024L-12JL-TR operates within 0°C to 70°C temperature range, which does not meet the full industrial specification of -40°C to 85°C. This part is suitable only for applications with restricted operating temperature requirements.

Not Recommended

71V124SA15TYGI carries Last Time Buy status identical to the original part and offers no long-term availability advantage despite 1,075 pcs current inventory.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with faster access time than 12 ns?

A: Yes. Faster access time (such as 10 ns) is backward compatible with designs specified for 12 ns. The substitute will meet or exceed timing requirements without modification.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging is suitable for manual handling and small-volume assembly. Tape & Reel (TR) packaging is designed for automated pick-and-place equipment and high-volume production. Both contain identical die and electrical specifications.

Q: Is the IS63LV1024L-12JL-TR suitable for my application?

A: This part is suitable only if your application operates within 0°C to 70°C. It does not meet the full industrial temperature range of -40°C to 85°C specified for the original part. Verify your actual operating temperature requirements before selection.

Q: What does ROHS3 compliance mean?

A: ROHS3 (Restriction of Hazardous Substances Directive 3) compliance indicates the component contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers above specified thresholds. All listed substitutes maintain this compliance.

Q: Can I mix different substitute parts in the same design?

A: Yes, provided all selected parts meet the minimum electrical and thermal specifications of your design. Mixing parts with different access times (e.g., 10 ns and 12 ns) is acceptable as long as the slowest part meets your timing budget.

Q: Why is 71V124SA15TYGI listed as a substitute if it has Last Time Buy status?

A: 71V124SA15TYGI is functionally compatible but offers no availability advantage. It is included for reference only. Prioritize Active status parts for new designs and long-term supply security.

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