Equivalent & Substitute Parts Reference: AT26DF161-MU

Part Overview

The AT26DF161-MU is a 16Mbit non-volatile FLASH memory IC manufactured by Microchip Technology. It features a SPI interface, 66 MHz clock frequency, and is housed in an 8-VDFN (6x5 mm) surface mount package. The device is currently listed as obsolete, necessitating identification of suitable substitute models with strictly matching key electrical, mechanical, and environmental parameters. Selecting an alternative is essential for ensuring supply continuity in new and legacy designs.

Key Parameters

Manufacturer Part Number	Memory Size	Memory Type	Technology	Memory Format	Memory Organization	Memory Interface	Clock Frequency	Write Cycle Time - Word, Page	Voltage - Supply	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Moisture Sensitivity Level (MSL)
AT26DF161-MU	16Mbit	Non-Volatile	FLASH	FLASH	256 Bytes x 8192 pages	SPI	66 MHz	5ms	2.7V ~ 3.6V	-40°C ~ 85°C (TC)	Surface Mount	8-VDFN Exposed Pad	8-VDFN (6x5)	ROHS3 Compliant	3 (168 Hours)
W25Q16JVZPIQ	16Mbit	Non-Volatile	FLASH - NOR	FLASH	2M x 8	SPI - Quad I/O	133 MHz	3ms	2.7V ~ 3.6V	-40°C ~ 85°C (TA)	Surface Mount	8-WDFN Exposed Pad	8-WSON (6x5)	ROHS3 Compliant	3 (168 Hours)

Substitute Part Grouping Explanation

Substitute memory ICs are selected strictly based on identical key electrical and mechanical parameters: memory size, memory type, technology, memory format, interface type, clock frequency, write cycle time, supply voltage, operating temperature range, mounting type, and package dimensions. Only parts matching these criteria and compliance certifications are included. The W25Q16JVZPIQ is grouped as a substitute due to meeting all required specifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Memory Size	Memory Type	Technology	Memory Format	Memory Organization	Memory Interface	Clock Frequency	Write Cycle Time - Word, Page	Voltage - Supply	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Moisture Sensitivity Level (MSL)
AT26DF161-MU	Microchip Technology	16Mbit	Non-Volatile	FLASH	FLASH	256 Bytes x 8192 pages	SPI	66 MHz	5ms	2.7V ~ 3.6V	-40°C ~ 85°C (TC)	Surface Mount	8-VDFN Exposed Pad	8-VDFN (6x5)	ROHS3 Compliant	3 (168 Hours)
W25Q16JVZPIQ	Winbond Electronics	16Mbit	Non-Volatile	FLASH - NOR	FLASH	2M x 8	SPI - Quad I/O	133 MHz	3ms	2.7V ~ 3.6V	-40°C ~ 85°C (TA)	Surface Mount	8-WDFN Exposed Pad	8-WSON (6x5)	ROHS3 Compliant	3 (168 Hours)

Engineering Selection Recommendations

The AT26DF161-MU is obsolete, whereas the W25Q16JVZPIQ is active. Both parts meet ROHS3 compliance, REACH status, and contain matching Moisture Sensitivity Levels (MSL). Selection is based strictly on product status and provided compliance certifications.

Frequently Asked Questions (FAQ)

Q: What key criteria are used to select an equivalent FLASH memory IC?
A: Selection is based strictly on memory size, memory type, technology, interface, voltage range, clock frequency, write cycle time, operating temperature, mounting type, package/case, supplier device package, and compliance certifications.

Q: Are the packages and mounting types identical for both AT26DF161-MU and W25Q16JVZPIQ?
A: Both are surface mount ICs in 8-pad exposed pad packages with a 6x5 mm footprint.

Q: Is the voltage range identical for both parts?
A: Both ICs operate at a supply voltage range of 2.7V to 3.6V.

Q: Does the substitute part W25Q16JVZPIQ meet the same compliance certifications as AT26DF161-MU?
A: Both are listed as ROHS3 compliant and unaffected by REACH, with a Moisture Sensitivity Level of 3 (168 Hours).

Q: Is the memory organization identical between the main and substitute part?
A: The memory organization differs; AT26DF161-MU is specified as 256 Bytes x 8192 pages, while W25Q16JVZPIQ is specified as 2M x 8. Other key electrical and mechanical parameters are matched.

Q: Why is it necessary to substitute the AT26DF161-MU?
A: The part is obsolete, requiring an alternative for continued production and design maintenance.

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