PE43703MLI RF Attenuator Equivalent & Substitute Parts

Part Overview

The PE43703MLI is an RF attenuator manufactured by pSemi, designed for fixed attenuation applications in RF and microwave systems. This component provides 31.75dB attenuation across a frequency range of 9 kHz to 6 GHz with 50 Ohm impedance in a 32-VFQFN Exposed Pad package.

The PE43703MLI is classified as Obsolete. Identifying equivalent and substitute parts is necessary to maintain system continuity, support legacy designs, and ensure component availability for production and repair applications.

Substiute Parts

PE43703MLI

pSemiIn Stock: 1082PE43703MLI Datasheet

Current PartRFQ

PE43713B-Z

pSemiIn Stock: 3978PE43713B-Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PE43703MLI is determined by the following critical parameters:

• Attenuation Value: The substitute must provide 31.75dB attenuation or support a range that includes 31.75dB
• Frequency Range: The substitute must cover the 9 kHz ~ 6 GHz operating band
• Impedance: The substitute must maintain 50 Ohm impedance for system compatibility
• Package / Case: The substitute must use the 32-VFQFN Exposed Pad package for PCB layout compatibility
• Moisture Sensitivity Level: The substitute must meet or exceed MSL 1 classification

The PE43713B-Z meets all substitution criteria as an active product from pSemi within the same product family.

Parameter Comparison

Engineering Selection Recommendations

The PE43713B-Z is the qualified substitute for the obsolete PE43703MLI. Both components share identical electrical specifications (attenuation range, frequency response, impedance) and mechanical compatibility (package type, pin configuration). The PE43713B-Z is currently in active production status, ensuring long-term availability and supply chain reliability.

The PE43713B-Z provides additional compliance certifications (ROHS3 Compliant, REACH Unaffected) compared to the PE43703MLI, making it suitable for applications with environmental and regulatory requirements. The variable attenuation range (0dB ~ 31.75dB) of the PE43713B-Z encompasses the fixed 31.75dB specification of the PE43703MLI, providing functional equivalence for fixed-attenuation circuit implementations.

Frequently Asked Questions (FAQ)

Q: Can the PE43713B-Z directly replace the PE43703MLI in existing designs?

A: Yes. Both components use the 32-VFQFN Exposed Pad package with identical pin assignments, frequency response (9 kHz ~ 6 GHz), and 50 Ohm impedance. The PE43713B-Z supports the required 31.75dB attenuation level within its 0dB ~ 31.75dB range.

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

A: The PE43703MLI provides fixed 31.75dB attenuation, while the PE43713B-Z is a digitally controlled attenuator supporting variable attenuation from 0dB to 31.75dB. For fixed-attenuation applications, the PE43713B-Z can be configured to operate at 31.75dB.

Q: Are there packaging or moisture sensitivity differences?

A: No. Both components use the same 32-VFQFN Exposed Pad package and share identical MSL 1 (Unlimited) moisture sensitivity classification.

Q: Does the PE43713B-Z meet current compliance standards?

A: Yes. The PE43713B-Z is ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements. The PE43703MLI compliance status was not specified in available documentation.

Q: What is the inventory status for these parts?

A: The PE43703MLI is obsolete with limited remaining inventory (980 Pcs). The PE43713B-Z is in active production with higher availability (3965 Pcs in stock).