PE43702MLI RF Attenuator Equivalent & Substitute Parts

Part Overview

The PE43702MLI is an RF attenuator manufactured by pSemi, designed for applications requiring fixed attenuation in the 9 kHz to 4 GHz frequency range. This component provides 31.75 dB attenuation with 50 Ohm impedance in a 24-VFQFN Exposed Pad package. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

PE43702MLI

pSemiIn Stock: 697PE43702MLI Datasheet

Current PartRFQ

PE43711B-Z

pSemiIn Stock: 17595PE43711B-Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PE43702MLI is determined by the following critical parameters:

• Attenuation Value: The substitute must provide 31.75 dB attenuation or equivalent fixed attenuation within the operational specification
• Frequency Range: The substitute must support the 9 kHz to 4 GHz operating band
• Impedance: The substitute must maintain 50 Ohm characteristic impedance
• Package Compatibility: The substitute must use the 24-VFQFN Exposed Pad package for PCB layout compatibility
• Moisture Sensitivity: The substitute must meet or exceed MSL 1 classification

The PE43711B-Z qualifies as a substitute based on these parameters. While the PE43711B-Z offers variable attenuation (0 dB ~ 31.75 dB) compared to the fixed 31.75 dB of the PE43702MLI, it can be configured to deliver the required attenuation level and operates within compatible electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The PE43711B-Z is the designated substitute for the obsolete PE43702MLI. Selection is justified on the following basis:

• Product Availability: The PE43711B-Z is active and maintains substantial inventory (17,500 pcs), ensuring supply continuity for the obsolete PE43702MLI
• Electrical Compatibility: Both components share identical impedance (50 Ohms), package format (24-VFQFN Exposed Pad), and moisture sensitivity classification (MSL 1)
• Frequency Coverage: The PE43711B-Z extends frequency range to 6 GHz, providing broader operational capability while maintaining full compatibility within the PE43702MLI's 9 kHz to 4 GHz specification
• Compliance Status: The PE43711B-Z carries ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements
• Functional Equivalence: The PE43711B-Z variable attenuation range (0 dB ~ 31.75 dB) encompasses the fixed 31.75 dB attenuation of the PE43702MLI, enabling direct functional replacement

Frequently Asked Questions (FAQ)

Q: Can the PE43711B-Z directly replace the PE43702MLI in existing designs?

A: Yes. Both components use the 24-VFQFN Exposed Pad package with identical pinout compatibility. The PE43711B-Z can be configured to deliver the required 31.75 dB attenuation and operates within all specified electrical parameters of the PE43702MLI.

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

A: The PE43702MLI provides fixed 31.75 dB attenuation, while the PE43711B-Z offers variable attenuation from 0 dB to 31.75 dB. The PE43711B-Z also extends frequency range to 6 GHz compared to the PE43702MLI's 4 GHz upper limit.

Q: Are there package considerations when substituting?

A: No. Both parts use the 24-VFQFN Exposed Pad package, ensuring PCB layout and thermal management compatibility without modification.

Q: Does the PE43711B-Z meet current compliance standards?

A: Yes. The PE43711B-Z is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

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

A: The PE43711B-Z maintains active production status with 17,500 pcs in stock, providing reliable supply availability compared to the obsolete PE43702MLI.