CAT1023WI28 Equivalent & Substitute Parts

Part Overview

The CAT1023WI28 is a supervisor integrated circuit in the Power Management (PMIC) category, manufactured by onsemi. This device functions as a Simple Reset/Power-On Reset supervisor with open drain or open collector output, monitoring a single voltage channel. The part is classified as Obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement requirements. Active alternatives are available that maintain electrical and mechanical compatibility while offering improved product lifecycle status.

Substiute Parts

CAT1023WI28

onsemiIn Stock: 786CAT1023WI28 Datasheet

Current PartRFQ

CAT1023WI-28-GT3

onsemiIn Stock: 25246CAT1023WI-28-GT3 Datasheet

DirectRFQ

CAT1025WI-28-G

onsemiIn Stock: 1080CAT1025WI-28-G Datasheet

Parametric EquivalentRFQ

CAT1023WI-28-G

onsemiIn Stock: 911CAT1023WI-28-G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CAT1023WI28 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Criteria:

• Single voltage channel monitoring (Number of Voltages Monitored: 1)
• Voltage threshold of 2.85V
• Open drain or open collector output configuration
• Active High/Active Low reset capability
• 130ms minimum reset timeout
• Operating temperature range of -40°C to 85°C

Mechanical Compatibility Criteria:

• Surface mount technology
• 8-SOIC package with 0.154" (3.90mm) width specification

Functional Compatibility Criteria:

• Simple Reset/Power-On Reset supervisor type

All substitute parts listed maintain these parameters without deviation. Substitution is based solely on matching these electrical, mechanical, and functional specifications. Product status and compliance certifications are secondary considerations that do not affect electrical or mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

For Active Product Lifecycle:

CAT1023WI-28-G and CAT1025WI-28-G are both classified as Active products and are recommended for new designs and long-term procurement strategies. Both parts maintain complete electrical and mechanical equivalence to the CAT1023WI28 while offering superior product lifecycle support.

CAT1023WI-28-G is the direct successor to CAT1023WI28, sharing the identical base product number (CAT1023) and providing continuity in design documentation and supply chain management.

CAT1025WI-28-G is a parametric equivalent with a different base product number (CAT1025) but maintains all critical electrical and mechanical specifications. This part is suitable for applications where the CAT1023 series is not available.

Both active alternatives carry ROHS3 compliance certification, meeting current environmental and regulatory requirements.

For Existing Inventory Management:

CAT1023WI-28-GT3 remains available with substantial inventory (25,200 units) and is classified as Obsolete. This part maintains complete electrical and mechanical compatibility and carries ROHS3 compliance. It is suitable for sustaining production of existing designs but should not be selected for new development.

Compliance Considerations:

All substitute parts maintain REACH Unaffected status, consistent with the original CAT1023WI28. Moisture sensitivity level remains at MSL 1 (Unlimited) across all alternatives, indicating no additional handling or storage requirements.

Frequently Asked Questions (FAQ)

Q: Can CAT1023WI-28-G be used as a direct replacement for CAT1023WI28?

A: Yes. CAT1023WI-28-G maintains identical electrical specifications (2.85V threshold, 130ms reset timeout, single voltage monitoring), identical output configuration (open drain or open collector), identical reset behavior (active high/active low), and identical mechanical packaging (8-SOIC, 3.90mm width). The part is pin-compatible and functionally equivalent. CAT1023WI-28-G is classified as Active, providing improved lifecycle support compared to the Obsolete CAT1023WI28.

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

A: Both parts are electrically and mechanically equivalent, with identical voltage thresholds (2.85V), reset timeouts (130ms), output types (open drain or open collector), and package specifications (8-SOIC). The primary difference is the base product number: CAT1023WI-28-G uses the CAT1023 base number, while CAT1025WI-28-G uses the CAT1025 base number. Both are Active products. Selection between them depends on design documentation and supply chain preferences.

Q: Is CAT1023WI-28-GT3 suitable for new designs?

A: CAT1023WI-28-GT3 is classified as Obsolete and should not be selected for new designs. While it maintains complete electrical and mechanical compatibility with CAT1023WI28, Active alternatives (CAT1023WI-28-G or CAT1025WI-28-G) are available and provide superior long-term product support and supply chain stability.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use 8-SOIC surface mount packaging with 0.154" (3.90mm) width. CAT1023WI-28-GT3 is supplied in Cut Tape (CT) packaging, while CAT1023WI-28-G and CAT1025WI-28-G packaging specifications are not detailed in the provided data. Confirm packaging format with the supplier for specific procurement requirements.

Q: Do the substitute parts require different handling or storage procedures?

A: No. All substitute parts maintain Moisture Sensitivity Level 1 (Unlimited), identical to the original CAT1023WI28. No additional handling, storage, or drying procedures are required.

Q: What is the inventory status of each substitute part?

A: CAT1023WI-28-GT3 has 25,200 units in stock. CAT1023WI-28-G has 876 units in stock. CAT1025WI-28-G has 984 units in stock. Inventory levels should be confirmed with the supplier for procurement planning.

Q: Are all parts compliant with current environmental regulations?

A: CAT1023WI-28-GT3, CAT1023WI-28-G, and CAT1025WI-28-G are all ROHS3 compliant. All parts maintain REACH Unaffected status. The original CAT1023WI28 does not specify RoHS status but maintains REACH Unaffected status.