PI3C3125ZJEX Equivalent & Substitute Parts

Part Overview

The PI3C3125ZJEX is a bus switch IC manufactured by Diodes Incorporated, designed for 1 x 1:1 switching applications with four independent circuits. This component operates across a single supply voltage range of 2.3V to 3.6V and is housed in a 16-TDFN package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and inventory management.

Substiute Parts

PI3C3125ZJEX

Diodes IncorporatedIn Stock: 2528PI3C3125ZJEX Datasheet

Current PartRFQ

SN74CB3Q3125DBQR

Texas InstrumentsIn Stock: 2768SN74CB3Q3125DBQR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PI3C3125ZJEX is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: 1 x 1:1 topology with 4 independent circuits
• Voltage Supply Range: 2.3V ~ 3.6V single supply operation
• Operating Temperature Range: -40°C ~ 85°C
• Functional Type: Bus Switch IC
• Regulatory Compliance: ROHS3 and REACH compliance status

The SN74CB3Q3125DBQR from Texas Instruments meets all functional and electrical requirements for direct substitution. While the package format differs (16-SSOP versus 16-TDFN), both are surface-mount configurations with equivalent pin counts and electrical characteristics. The substitute part maintains identical voltage supply specifications, temperature operating range, and circuit topology.

Parameter Comparison

Engineering Selection Recommendations

The SN74CB3Q3125DBQR is the qualified substitute for the obsolete PI3C3125ZJEX. Selection is based on the following engineering criteria:

Functional Equivalence: Both parts implement identical 1 x 1:1 bus switch topology with four independent circuits, ensuring pin-level and functional compatibility.

Electrical Specifications: Matching voltage supply range (2.3V ~ 3.6V) and operating temperature range (-40°C ~ 85°C) confirm electrical interchangeability.

Regulatory Status: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying current environmental and regulatory requirements.

Product Availability: The substitute part carries active product status with confirmed inventory availability (2700 pcs), whereas the original part is obsolete. This transition is necessary for long-term supply chain continuity.

Package Consideration: The shift from 16-TDFN to 16-SSOP packaging requires PCB layout modification. Both packages are industry-standard surface-mount formats with equivalent pin counts. Design teams must update footprints and verify mechanical clearances during implementation.

Frequently Asked Questions (FAQ)

Q: Can the SN74CB3Q3125DBQR directly replace the PI3C3125ZJEX without circuit modifications?

A: Electrical and functional compatibility is confirmed. However, the package format change from 16-TDFN to 16-SSOP requires PCB footprint redesign. Pin assignments and electrical characteristics remain equivalent.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer (Diodes Incorporated versus Texas Instruments), product status (obsolete versus active), package type (16-TDFN versus 16-SSOP), and moisture sensitivity level (MSL 1 versus MSL 2). All electrical specifications and circuit topology are identical.

Q: Are there any compliance or certification concerns with this substitution?

A: No. Both parts maintain ROHS3 compliance, REACH unaffected status, and identical ECCN classification (EAR99). Regulatory requirements are satisfied by the substitute part.

Q: Why is the moisture sensitivity level different between the two parts?

A: MSL ratings reflect packaging and manufacturing differences. The PI3C3125ZJEX carries MSL 1 (unlimited shelf life), while the SN74CB3Q3125DBQR carries MSL 2 (1-year shelf life). Both ratings are within acceptable industrial standards.

Q: Is the SN74CB3Q3125DBQR available in other package formats?

A: The provided data specifies the 16-SSOP package with Tape & Reel packaging. Consult the manufacturer datasheet for alternative package availability.

Q: What is the base product number relationship between these parts?

A: The PI3C3125ZJEX has base product number PI3C3125, while the SN74CB3Q3125DBQR has base product number 74CB3Q3125. Both reference the same functional circuit topology despite different manufacturer designations.