IS25CQ032-JBLE Equivalent & Substitute Parts

Part Overview

The IS25CQ032-JBLE is a 32Mbit FLASH memory IC manufactured by ISSI (Integrated Silicon Solution Inc) in an 8-SOIC package. This non-volatile memory device operates at 104 MHz via SPI interface with a supply voltage range of 2.7V to 3.6V and temperature range of -40°C to 105°C. The part is currently Active in product status with 2163 units in stock. Substitute parts are identified when equivalent memory capacity, interface protocol, package form factor, and electrical specifications align within acceptable parameters for direct board-level replacement.

Key Parameters

Parameter	Value
Memory Size	32Mbit
Memory Organization	4M x 8
Memory Interface	SPI
Clock Frequency	104 MHz
Voltage Supply Range	2.7V ~ 3.6V
Operating Temperature	-40°C ~ 105°C
Package / Case	8-SOIC (0.209", 5.30mm Width)
Write Cycle Time	4ms
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the IS25CQ032-JBLE are qualified based on the following criteria:

Memory Capacity: 32Mbit (4M x 8 organization)
Package Compatibility: 8-SOIC form factor with 0.209" width and 5.30mm dimensions
Electrical Specifications: Supply voltage 2.7V ~ 3.6V, operating temperature range support
Interface Protocol: SPI or SPI with extended capabilities (Quad I/O)
Compliance: ROHS3 compliance and REACH unaffected status
Product Status: Active manufacturing status

The identified substitutes maintain core memory specifications while offering enhanced performance characteristics in write cycle time and moisture sensitivity ratings.

Parameter Comparison

Parameter	IS25CQ032-JBLE	SST26VF032BT-104V/SM	SST26VF032B-104I/SM
Manufacturer	ISSI	Microchip Technology	Microchip Technology
Memory Size	32Mbit	32Mbit	32Mbit
Memory Organization	4M x 8	4M x 8	4M x 8
Memory Interface	SPI	SPI - Quad I/O	SPI - Quad I/O
Clock Frequency	104 MHz	104 MHz	104 MHz
Voltage Supply	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 85°C
Package / Case	8-SOIC	8-SOIJ	8-SOIJ
Write Cycle Time	4ms	1.5ms	1.5ms
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both Microchip Technology SST26 series parts (SST26VF032BT-104V/SM and SST26VF032B-104I/SM) are qualified substitutes for the IS25CQ032-JBLE based on matching memory capacity, package footprint, supply voltage range, and compliance certifications.

SST26VF032BT-104V/SM is available in Tape & Reel packaging with 4683 units in stock. This part supports the full operating temperature range of -40°C to 105°C and features improved write cycle time of 1.5ms with MSL rating of 1.

SST26VF032B-104I/SM is the manufacturer-recommended substitute, available in Tube packaging with 23400 units in stock. This part operates within -40°C to 85°C temperature range and also provides 1.5ms write cycle time with MSL rating of 1.

Both substitutes support SPI - Quad I/O interface, providing backward compatibility with standard SPI operation while enabling enhanced data transfer capabilities. The improved write cycle time and superior moisture sensitivity ratings represent performance advantages over the original part.

Frequently Asked Questions (FAQ)

Q: Can SST26VF032BT-104V/SM and SST26VF032B-104I/SM be used interchangeably with IS25CQ032-JBLE?

A: Both parts are electrically compatible substitutes. The primary differences are packaging format (Tape & Reel vs. Tube), operating temperature upper limit (105°C vs. 85°C for the -104I variant), and inventory availability. Board-level compatibility is maintained through identical 8-SOIC package dimensions and pinout.

Q: What is the significance of the SPI - Quad I/O interface on the substitute parts?

A: The SST26 series supports both standard SPI and Quad I/O modes. Designs using only standard SPI protocol operate identically to the IS25CQ032-JBLE. The Quad I/O capability is an additional feature that does not affect backward compatibility.

Q: How do the write cycle times compare?

A: The IS25CQ032-JBLE specifies 4ms write cycle time, while both SST26 substitutes provide 1.5ms write cycle time. This represents improved performance and faster programming operations.

Q: What is the difference between MSL ratings of 3 and 1?

A: MSL (Moisture Sensitivity Level) 3 allows 168 hours of floor life before reflow, while MSL 1 allows unlimited floor life. The substitute parts with MSL 1 provide greater handling flexibility and reduced risk of moisture-related failures during assembly.

Q: Are there temperature range considerations for part selection?

A: The IS25CQ032-JBLE and SST26VF032BT-104V/SM both support -40°C to 105°C operation. The SST26VF032B-104I/SM operates to 85°C maximum. Select based on application temperature requirements.

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