IS25WD020-JBLE Equivalent & Substitute Parts

Part Overview

The IS25WD020-JBLE is a 2Mbit NOR Flash memory IC manufactured by ISSI (Integrated Silicon Solution Inc) in an 8-SOIC surface mount package. This component operates at 80 MHz with SPI interface and is designed for non-volatile memory applications requiring low-voltage operation (1.65V to 1.95V). The part is currently classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Memory Size	2Mbit
Memory Organization	256K x 8
Memory Interface	SPI
Clock Frequency	80 MHz
Voltage Supply Range	1.65V ~ 1.95V
Operating Temperature	-40°C ~ 105°C
Package Type	8-SOIC (0.209", 5.30mm Width)
Write Cycle Time	3ms
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the IS25WD020-JBLE is determined by strict equivalence in the following critical parameters:

Memory Capacity: 2Mbit (256K x 8 organization)
Interface Protocol: SPI
Voltage Supply Range: 1.65V ~ 1.95V
Package Type: 8-SOIC form factor
Operating Temperature Range: -40°C ~ 105°C
Environmental Compliance: ROHS3 and REACH status

The IS25WQ020-JBLE qualifies as a direct substitute because it maintains identical memory capacity, organization, interface, voltage specifications, temperature range, package configuration, and compliance certifications. Variations in clock frequency and write cycle time do not preclude substitution when the substitute meets or exceeds the performance requirements of the original design.

Parameter Comparison

Parameter	IS25WD020-JBLE (Main)	IS25WQ020-JBLE (Substitute)
Manufacturer	ISSI	ISSI
Memory Size	2Mbit	2Mbit
Memory Organization	256K x 8	256K x 8
Memory Interface	SPI	SPI
Clock Frequency	80 MHz	104 MHz
Voltage Supply Range	1.65V ~ 1.95V	1.65V ~ 1.95V
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C
Write Cycle Time	3ms	1ms
Package Type	8-SOIC	8-SOIC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The IS25WQ020-JBLE is a qualified substitute for the IS25WD020-JBLE based on functional equivalence and compliance alignment. Both components maintain identical memory specifications, voltage requirements, temperature operating range, and package configuration. The substitute part carries Active product status with verified programmability, ensuring continued availability and manufacturing support. Both parts satisfy ROHS3 and REACH compliance requirements, making them suitable for regulated applications. The IS25WQ020-JBLE offers enhanced performance characteristics with increased clock frequency (104 MHz versus 80 MHz) and reduced write cycle time (1 ms versus 3 ms), providing design flexibility without compromising compatibility with existing circuit implementations.

Frequently Asked Questions (FAQ)

Q: Can IS25WQ020-JBLE directly replace IS25WD020-JBLE in existing designs?

A: Yes. Both parts share identical memory capacity, SPI interface, voltage supply range, operating temperature specifications, and 8-SOIC package configuration. The substitute part meets all functional requirements of the original component.

Q: What is the significance of the higher clock frequency in IS25WQ020-JBLE?

A: The IS25WQ020-JBLE operates at 104 MHz compared to 80 MHz for the IS25WD020-JBLE. This higher frequency does not create compatibility issues; it represents improved performance capability. Designs operating at the original 80 MHz specification will function without modification.

Q: Are there any package or pinout differences between these parts?

A: No. Both components use the 8-SOIC package with identical 0.209" width and 5.30mm dimensions. Pinout and mechanical compatibility are fully maintained.

Q: Why is the original part classified as obsolete?

A: The IS25WD020-JBLE is no longer in active production. The IS25WQ020-JBLE represents the current active equivalent from ISSI, offering the same core functionality with enhanced performance characteristics.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both the IS25WD020-JBLE and IS25WQ020-JBLE are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is identical at MSL 3 (168 Hours) for both components.

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