IS25LQ032B-JBLE Equivalent & Substitute Parts

Part Overview

The IS25LQ032B-JBLE is a 32Mbit NOR Flash memory IC with SPI Quad I/O interface, manufactured by ISSI (Integrated Silicon Solution Inc). This device operates at 104 MHz clock frequency and is housed in an 8-SOIC surface mount package. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations. Substitute parts must maintain electrical and mechanical compatibility while meeting the same functional requirements for NOR Flash memory applications.

Key Parameters

Parameter	Value
Memory Size	32Mbit
Memory Format	FLASH - NOR
Memory Interface	SPI - Quad I/O
Clock Frequency	104 MHz
Memory Organization	4M x 8
Voltage Supply Range	2.3V ~ 3.6V
Operating Temperature	-40°C ~ 105°C (TA)
Package Type	8-SOIC (0.209", 5.30mm Width)
Write Cycle Time	1ms
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the IS25LQ032B-JBLE is determined by the following critical parameters:

Memory Capacity & Organization: Substitute parts must provide 32Mbit capacity with 4M x 8 organization to ensure direct functional equivalence in memory addressing and data storage.

Memory Technology & Interface: The NOR Flash technology with SPI Quad I/O interface is mandatory. Substitute parts must support the same quad I/O communication protocol for signal compatibility with existing PCB designs and firmware implementations.

Electrical Specifications: Supply voltage range of 2.3V ~ 3.6V and operating temperature range of -40°C ~ 105°C must be maintained to ensure operation within the same system power and thermal constraints.

Package Compatibility: The 8-SOIC package with 0.209" (5.30mm) width is required for mechanical fit on existing PCBs. Pin count and pitch must remain identical.

Compliance & Certifications: RoHS3 compliance and MSL rating of 3 (168 Hours) must be preserved for regulatory and manufacturing process compatibility.

The IS25LP032D-JBLE meets all substitution criteria while offering enhanced performance characteristics.

Parameter Comparison

Parameter	IS25LQ032B-JBLE (Main Part)	IS25LP032D-JBLE (Substitute)
Manufacturer	ISSI	Integrated Silicon Solution
Memory Size	32Mbit	32Mbit
Memory Format	FLASH - NOR	FLASH - NOR
Memory Organization	4M x 8	4M x 8
Memory Interface	SPI - Quad I/O	SPI - Quad I/O, QPI, DTR
Clock Frequency	104 MHz	133 MHz
Write Cycle Time	1ms	800µs
Voltage Supply Range	2.3V ~ 3.6V	2.3V ~ 3.6V
Operating Temperature	-40°C ~ 105°C (TA)	-40°C ~ 105°C (TA)
Package Type	8-SOIC (0.209", 5.30mm Width)	8-SOIC (0.209", 5.30mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The IS25LP032D-JBLE is a direct substitute for the IS25LQ032B-JBLE based on matching memory capacity, organization, interface protocol, electrical specifications, and package geometry. Both parts maintain identical supply voltage ranges (2.3V ~ 3.6V) and operating temperature specifications (-40°C ~ 105°C), ensuring compatibility with existing system designs.

The substitute part offers enhanced performance through increased clock frequency (133 MHz versus 104 MHz) and reduced write cycle time (800µs versus 1ms), providing operational improvements without compromising backward compatibility. Both parts maintain ROHS3 compliance and identical MSL ratings, satisfying regulatory and manufacturing requirements.

The IS25LP032D-JBLE is currently in active production status, ensuring long-term availability and supply chain stability compared to the obsolete IS25LQ032B-JBLE.

Frequently Asked Questions (FAQ)

Q: Can the IS25LP032D-JBLE be used as a direct replacement for the IS25LQ032B-JBLE?

A: Yes. Both parts share identical memory capacity (32Mbit), organization (4M x 8), NOR Flash technology, SPI Quad I/O interface, supply voltage range (2.3V ~ 3.6V), operating temperature range (-40°C ~ 105°C), and 8-SOIC package dimensions. Pin-to-pin compatibility is maintained.

Q: What are the performance differences between these parts?

A: The IS25LP032D-JBLE operates at 133 MHz clock frequency compared to 104 MHz for the IS25LQ032B-JBLE. Write cycle time is reduced from 1ms to 800µs. The substitute part also supports additional interface modes (QPI and DTR) beyond the standard SPI Quad I/O. These enhancements do not affect backward compatibility.

Q: Are there any firmware or software modifications required when switching to the IS25LP032D-JBLE?

A: No firmware modifications are required. The substitute part maintains full compatibility with the SPI Quad I/O protocol used by the original part. Existing firmware will operate without changes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the IS25LQ032B-JBLE and IS25LP032D-JBLE are ROHS3 compliant with MSL rating 3 (168 Hours). Regulatory and manufacturing process requirements are identical.

Q: Why is the IS25LQ032B-JBLE listed as obsolete?

A: The IS25LQ032B-JBLE has reached end-of-life status. The IS25LP032D-JBLE represents the current active production equivalent from the same manufacturer, ensuring continued availability and support.

Q: Are there any thermal or power consumption differences?

A: Both parts operate within the same voltage supply range (2.3V ~ 3.6V) and temperature specifications (-40°C ~ 105°C). The enhanced performance of the substitute part may result in different power consumption characteristics under specific operating conditions, but both are suitable for the same system power budgets.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message