AT25DF512C-SSHNGU-T Equivalent & Substitute Parts

Part Overview

The AT25DF512C-SSHNGU-T is a 512Kbit SPI FLASH memory IC manufactured by Renesas Electronics Corporation in an 8-SOIC surface mount package. This non-volatile memory device operates at 104 MHz with a supply voltage range of 1.65V to 3.6V and is rated for -40°C to 85°C operating temperature. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching core electrical specifications, memory organization, interface protocol, and package form factor.

Key Parameters

Parameter	Value
Memory Size	512Kbit
Memory Organization	64K x 8
Memory Interface	SPI
Clock Frequency	104 MHz
Voltage Supply Range	1.65V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TC)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the AT25DF512C-SSHNGU-T are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Memory Capacity & Organization: 512Kbit capacity with 64K x 8 organization
Interface Protocol: SPI serial interface
Package Form Factor: 8-SOIC surface mount package with 0.154" (3.90mm) width
Electrical Specifications: Supply voltage 1.65V ~ 3.6V, operating temperature -40°C ~ 85°C
Compliance: ROHS3 compliance and active product status

The identified substitutes maintain these core parameters while differing in packaging configuration (Tape & Reel vs. individual units) and minor timing specifications that remain within functional equivalence for SPI FLASH memory applications.

Parameter Comparison

Parameter	AT25DF512C-SSHNGU-T	AT25DF512C-SSHN-T	AT25XE512C-SSHN-T
Memory Size	512Kbit	512Kbit	512Kbit
Memory Organization	64K x 8	64K x 8	64K x 8
Memory Interface	SPI	SPI	SPI
Clock Frequency	104 MHz	104 MHz	104 MHz
Write Cycle Time - Word	8µs	8µs	12µs
Write Cycle Time - Page	4.6ms	4.6ms	3ms
Voltage - Supply	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TC)	-40°C ~ 85°C (TC)	-40°C ~ 85°C (TC)
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active
Packaging Configuration	Individual Unit	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

AT25DF512C-SSHN-T is the primary substitute for AT25DF512C-SSHNGU-T. Both parts are manufactured by Renesas Electronics Corporation with identical electrical specifications, memory organization, and package form factor. The primary difference is packaging configuration: AT25DF512C-SSHN-T is supplied in Tape & Reel format with verified DiGi-Electronics programmability status and higher inventory availability (4389 units). This part is suitable for production volume applications requiring reel packaging.

AT25XE512C-SSHN-T is a secondary substitute with the same memory capacity, organization, and package form factor. This part maintains full electrical compatibility with identical supply voltage and operating temperature ranges. Minor differences exist in write cycle timing (12µs word write vs. 8µs, and 3ms page write vs. 4.6ms), which remain within acceptable parameters for SPI FLASH memory applications. AT25XE512C-SSHN-T is supplied in Tape & Reel format with higher inventory availability (5016 units).

All three parts maintain ROHS3 compliance, active product status, and unlimited moisture sensitivity level (MSL 1), ensuring regulatory and environmental compatibility across substitution scenarios.

Frequently Asked Questions (FAQ)

Q: Can AT25DF512C-SSHN-T directly replace AT25DF512C-SSHNGU-T in existing designs?

A: Yes. Both parts share identical electrical specifications, memory capacity (512Kbit), organization (64K x 8), SPI interface, supply voltage (1.65V ~ 3.6V), operating temperature range (-40°C ~ 85°C), and 8-SOIC package form factor. The difference is packaging configuration: SSHNGU-T is supplied as individual units while SSHN-T is supplied in Tape & Reel format. PCB layout and schematic compatibility are maintained.

Q: What are the timing differences between AT25DF512C-SSHN-T and AT25XE512C-SSHN-T?

A: AT25DF512C-SSHN-T specifies 8µs word write cycle time and 4.6ms page write cycle time. AT25XE512C-SSHN-T specifies 12µs word write cycle time and 3ms page write cycle time. Both operate at 104 MHz clock frequency. The timing variations do not affect functional compatibility for standard SPI FLASH memory operations.

Q: Are all three parts ROHS3 compliant?

A: Yes. AT25DF512C-SSHNGU-T, AT25DF512C-SSHN-T, and AT25XE512C-SSHN-T are all ROHS3 compliant with REACH unaffected status and unlimited moisture sensitivity level (MSL 1).

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

A: AT25DF512C-SSHNGU-T is supplied as individual units suitable for small quantity orders and prototype applications. AT25DF512C-SSHN-T and AT25XE512C-SSHN-T are supplied in Tape & Reel format, which is standard for production volume manufacturing and automated assembly processes. Electrical and functional specifications are identical.

Q: Which substitute part has the highest inventory availability?

A: AT25XE512C-SSHN-T has the highest inventory availability with 5016 units in stock, followed by AT25DF512C-SSHN-T with 4389 units. AT25DF512C-SSHNGU-T has 685 units available.

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