CAT1023WI42 Equivalent & Substitute Parts

Part Overview

The CAT1023WI42 is a Power Management Integrated Circuit (PMIC) supervisor device manufactured by onsemi, classified as a Simple Reset/Power-On Reset supervisor with open drain or open collector output configuration. This component monitors a single voltage channel and provides active high/active low reset functionality with a 130ms minimum reset timeout. The device is packaged in an 8-SOIC surface mount package and operates across the industrial temperature range of -40°C to 85°C.

The CAT1023WI42 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this supervisor topology.

Substiute Parts

CAT1023WI42

onsemiIn Stock: 863CAT1023WI42 Datasheet

Current PartRFQ

CAT1021WI-42-G

onsemiIn Stock: 1181CAT1021WI-42-G Datasheet

Parametric EquivalentRFQ

CAT1025WI-42-G

onsemiIn Stock: 886CAT1025WI-42-G Datasheet

Parametric EquivalentRFQ

CAT1023WI-42-G

onsemiIn Stock: 1000CAT1023WI-42-G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CAT1023WI42 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Single voltage channel monitoring capability
• 4.25V voltage threshold
• Open drain or open collector output configuration
• Active high/active low reset functionality
• 130ms minimum reset timeout
• Operating temperature range of -40°C to 85°C
• 8-SOIC surface mount package (0.154", 3.90mm Width)
• Moisture Sensitivity Level 1 (Unlimited)

All identified substitute parts maintain identical electrical specifications and mechanical packaging requirements. Substitution is based exclusively on these parametric criteria without consideration of performance assumptions or application-specific testing.

Parameter Comparison

Engineering Selection Recommendations

CAT1023WI-42-G is the direct manufacturer equivalent of the obsolete CAT1023WI42. This part maintains identical electrical and mechanical specifications while carrying an active product status. The CAT1023WI-42-G is ROHS3 compliant and carries EAR99 export classification, providing regulatory alignment for current production environments.

CAT1021WI-42-G and CAT1025WI-42-G are parametric equivalents that satisfy all electrical and mechanical requirements specified for the CAT1023WI42. Both parts are active products with ROHS3 compliance and REACH unaffected status. These alternatives provide additional supply chain options while maintaining functional compatibility.

Selection between active substitute parts should be based on availability, lead time, and inventory requirements. All three substitute options are electrically and mechanically interchangeable with the obsolete CAT1023WI42 based on the provided specifications.

Frequently Asked Questions (FAQ)

Q: Can CAT1021WI-42-G, CAT1025WI-42-G, and CAT1023WI-42-G be used interchangeably with CAT1023WI42?

A: Yes. All three substitute parts maintain identical electrical parameters including voltage threshold (4.25V), reset timeout (130ms minimum), output configuration (open drain or open collector), and operating temperature range (-40°C to 85°C). All are packaged in 8-SOIC surface mount configuration with matching pin assignments and functional behavior.

Q: What is the primary reason for substituting the CAT1023WI42?

A: The CAT1023WI42 carries an obsolete product status. The active equivalents (CAT1023WI-42-G, CAT1021WI-42-G, and CAT1025WI-42-G) ensure continued availability and supply chain reliability for new production and ongoing support.

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

A: The substitute parts carry ROHS3 compliance certification, whereas the obsolete CAT1023WI42 does not specify RoHS status. All parts maintain REACH unaffected status. The substitute parts also carry EAR99 export classification and HTSUS code 8542.39.0001.

Q: Does the 8-SOIC package remain the same across all parts?

A: Yes. All parts utilize the 8-SOIC package with 0.154" width (3.90mm). Package dimensions, pin configuration, and surface mount characteristics are identical across the main part and all substitutes.

Q: What is the Moisture Sensitivity Level for these supervisor devices?

A: All parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage, handling, or assembly processes.

Q: Are there inventory considerations when selecting between substitute parts?

A: Current inventory levels are: CAT1023WI-42-G (964 Pcs), CAT1021WI-42-G (1097 Pcs), and CAT1025WI-42-G (836 Pcs). Inventory availability may influence selection for immediate procurement requirements.