CAT1025WI28 Equivalent & Substitute Parts

Part Overview

The CAT1025WI28 is a supervisor integrated circuit designed for power management applications, specifically functioning as a reset/power-on reset controller with open drain or open collector output configuration. This device monitors a single voltage channel and provides active high/active low reset functionality with a 130ms minimum reset timeout.

The CAT1025WI28 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production requirements for systems utilizing this supervisor circuit.

Substiute Parts

CAT1025WI28

onsemiIn Stock: 1001CAT1025WI28 Datasheet

Current PartRFQ

CAT1025WI-28-G

onsemiIn Stock: 1080CAT1025WI-28-G Datasheet

DirectRFQ

CAT1023WI-28-G

onsemiIn Stock: 911CAT1023WI-28-G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CAT1025WI28 are identified based on strict electrical and mechanical parameter equivalence. The substitution logic is structured as follows:

Direct Manufacturer Substitute: Parts that maintain identical electrical specifications and package configuration while offering improved product status or compliance certifications.

Parametric Equivalent: Parts that share all critical functional parameters including voltage threshold, output configuration, reset characteristics, temperature range, and physical package dimensions, enabling functional interchangeability in circuit applications.

The following parameters determine substitution eligibility:

• Voltage threshold: 2.85V
• Output type: Open Drain or Open Collector
• Reset functionality: Active High/Active Low
• Reset timeout: 130ms Minimum
• Operating temperature: -40°C ~ 85°C
• Package: 8-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount

Parameter Comparison

Engineering Selection Recommendations

CAT1025WI-28-G is the primary substitute for the obsolete CAT1025WI28. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance certification. The transition from CAT1025WI28 to CAT1025WI-28-G provides improved supply chain availability and regulatory compliance without requiring circuit redesign.

CAT1023WI-28-G functions as a parametric equivalent, sharing all critical electrical parameters and physical package dimensions. This part is suitable for applications where the base product number variation is acceptable within design specifications. CAT1023WI-28-G also carries active product status and ROHS3 compliance.

Both substitute parts are manufactured by onsemi and maintain the same 8-SOIC package configuration, enabling direct pin-compatible replacement in existing PCB layouts. Selection between the direct substitute and parametric equivalent should be based on design documentation requirements and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can CAT1025WI-28-G be used as a direct replacement for CAT1025WI28?

A: Yes. CAT1025WI-28-G maintains identical electrical specifications including 2.85V voltage threshold, open drain/open collector output, active high/active low reset functionality, 130ms minimum reset timeout, and -40°C to 85°C operating temperature range. The 8-SOIC package dimensions are identical, enabling pin-compatible replacement.

Q: What is the difference between CAT1025WI-28-G and CAT1023WI-28-G?

A: Both parts share identical electrical parameters and package configuration. The primary difference is the base product number designation (CAT1025 versus CAT1023). Both are active products with ROHS3 compliance and equivalent functional performance in supervisor circuit applications.

Q: Are there any compliance differences between the main part and substitutes?

A: The CAT1025WI28 (obsolete) does not specify RoHS status. Both substitute parts (CAT1025WI-28-G and CAT1023WI-28-G) are ROHS3 compliant and carry REACH Unaffected status, providing improved regulatory alignment for new designs and production.

Q: Is the 8-SOIC package identical across all three parts?

A: Yes. All three parts utilize the 8-SOIC package with 0.154" (3.90mm) width specification. PCB footprints and land patterns are identical, supporting direct component substitution without layout modifications.

Q: What is the moisture sensitivity level for these supervisor circuits?

A: All three parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage, handling, or assembly processes.

Q: Can these parts be used interchangeably in production?

A: CAT1025WI-28-G is the direct substitute for CAT1025WI28 and is recommended for production transitions. CAT1023WI-28-G is a parametric equivalent suitable for applications where base product number variation is acceptable. Both parts meet identical electrical and mechanical requirements for supervisor circuit functionality.