PE45140A-X Equivalent & Substitute Parts

Part Overview

The PE45140A-X is an RF power limiter IC manufactured by pSemi, designed for general-purpose RF limiting applications across the 20MHz to 2GHz frequency range. This component is housed in a 12-QFN (3x3) surface-mount package with an exposed pad and is classified as obsolete. Due to its obsolete product status, identifying suitable equivalent and substitute parts is essential for design continuity, procurement planning, and system maintenance.

Substiute Parts

PE45140A-X

pSemiIn Stock: 990PE45140A-X Datasheet

Current PartRFQ

PE45450A-X

pSemiIn Stock: 32747PE45450A-X Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PE45140A-X is determined by the following critical parameters:

• Package Compatibility: Both the main part and substitute must use the 12-QFN (3x3) surface-mount package with exposed pad to ensure PCB layout and thermal management compatibility.
• Function: Both parts must perform RF power limiting in general-purpose applications.
• Frequency Coverage: The substitute frequency range must encompass or exceed the original 20MHz to 2GHz specification to maintain system performance across the intended operating band.
• Series Alignment: Both parts belong to the pSemi UltraCMOS® series, ensuring consistent design methodology and performance characteristics.
• Mounting and Environmental Compliance: Surface-mount technology with MSL 1 rating and RoHS compliance ensures manufacturing process compatibility and regulatory adherence.

The PE45450A-X qualifies as a manufacturer-recommended substitute based on these parameters. While it extends the frequency range to 9kHz ~ 6GHz, it maintains identical package geometry, function, mounting type, and environmental specifications.

Parameter Comparison

Engineering Selection Recommendations

The PE45450A-X is the manufacturer-recommended substitute for the obsolete PE45140A-X. Selection of this substitute is supported by the following factors:

• Product Status: The PE45450A-X maintains active product status, ensuring long-term availability and continued manufacturer support, whereas the PE45140A-X is obsolete.
• Regulatory Compliance: Both parts meet RoHS requirements. The PE45450A-X achieves ROHS3 compliance, representing the current regulatory standard. The PE45450A-X also maintains REACH Unaffected status.
• Package and Mounting Compatibility: Identical 12-QFN (3x3) package geometry and surface-mount configuration ensure direct PCB compatibility without layout modifications.
• Functional Equivalence: Both parts perform RF power limiting in general-purpose applications within the UltraCMOS® series.
• Frequency Range Extension: The PE45450A-X extends frequency coverage from 20MHz ~ 2GHz to 9kHz ~ 6GHz, providing broader operational capability while maintaining backward compatibility with the original specification band.
• Export Classification: Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, ensuring consistent regulatory treatment.

Frequently Asked Questions (FAQ)

Q: Can the PE45450A-X be used as a direct replacement for the PE45140A-X?

A: Yes. The PE45450A-X is the manufacturer-recommended substitute. Both parts share identical package geometry (12-QFN 3x3), mounting type (surface mount), function (RF power limiter), and environmental specifications (MSL 1, RoHS compliant). The PE45450A-X extends the frequency range beyond the original specification, making it functionally compatible for applications within the 20MHz to 2GHz band.

Q: What is the primary difference between these two parts?

A: The main difference is frequency range. The PE45140A-X operates from 20MHz to 2GHz, while the PE45450A-X operates from 9kHz to 6GHz. Additionally, the PE45140A-X is obsolete, whereas the PE45450A-X is an active product with current manufacturer support.

Q: Are there any PCB layout considerations when substituting the PE45450A-X for the PE45140A-X?

A: No layout modifications are required. Both parts use the identical 12-QFN (3x3) package with exposed pad, ensuring footprint compatibility and thermal management characteristics remain unchanged.

Q: Does the PE45450A-X meet current regulatory standards?

A: Yes. The PE45450A-X is ROHS3 compliant and REACH Unaffected, meeting current regulatory requirements. Both parts share the same ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What is the inventory status of the PE45450A-X?

A: The PE45450A-X is available in active production with 32,700 pieces in stock, ensuring reliable procurement compared to the obsolete PE45140A-X.