PE43204MLIBA-Z RF Attenuator Equivalent & Substitute Parts

Part Overview

The PE43204MLIBA-Z is a fixed RF attenuator manufactured by pSemi, designed for RF signal attenuation applications in the 50 MHz to 3 GHz frequency range. This component provides 18dB attenuation with 50 Ohm impedance in a compact 12-VFQFN package with exposed pad. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

PE43204MLIBA-Z

pSemiIn Stock: 1476PE43204MLIBA-Z Datasheet

Current PartRFQ

PE43205B-Z

pSemiIn Stock: 19347PE43205B-Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PE43204MLIBA-Z is determined by the following critical parameters:

• Attenuation Capability: The substitute must provide 18dB attenuation or support an attenuation range that includes 18dB
• Frequency Range: The substitute must cover the 50 MHz to 3 GHz operating band
• Impedance: The substitute must maintain 50 Ohm impedance for RF circuit compatibility
• Package Compatibility: The substitute package must be compatible with existing PCB layouts and assembly processes
• Manufacturer Continuity: pSemi UltraCMOS® series components ensure consistent performance characteristics and design integration

The PE43205B-Z qualifies as a substitute because it meets all critical electrical parameters while offering extended frequency coverage and adjustable attenuation capability.

Parameter Comparison

Engineering Selection Recommendations

The PE43205B-Z is the designated substitute for the obsolete PE43204MLIBA-Z based on the following factors:

• Active Product Status: The PE43205B-Z maintains active manufacturing status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: The substitute achieves ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements
• Electrical Compatibility: Both components operate at 50 Ohm impedance with identical MSL ratings, ensuring equivalent performance in RF applications
• Extended Capability: The PE43205B-Z provides adjustable attenuation (0dB ~ 18dB) and extended frequency coverage (35 MHz ~ 6 GHz), offering greater flexibility than the fixed 18dB configuration of the main part
• Package Consideration: The PE43205B-Z uses a 12-WFQFN package variant, which requires PCB layout verification to confirm compatibility with existing designs

Frequently Asked Questions (FAQ)

Q: Can the PE43205B-Z directly replace the PE43204MLIBA-Z in existing designs?

A: Electrical substitution is valid based on impedance, attenuation capability, and frequency range parameters. However, the package variant change from 12-VFQFN to 12-WFQFN requires PCB layout verification to confirm physical compatibility.

Q: What is the primary advantage of the PE43205B-Z over the PE43204MLIBA-Z?

A: The PE43205B-Z provides adjustable attenuation (0dB ~ 18dB) compared to the fixed 18dB of the main part, and extends frequency coverage to 6 GHz. Additionally, it maintains active product status with current regulatory compliance.

Q: Are there impedance differences between these components?

A: No. Both the PE43204MLIBA-Z and PE43205B-Z operate at 50 Ohm impedance, ensuring equivalent RF circuit performance.

Q: What packaging differences exist between these parts?

A: The PE43204MLIBA-Z uses 12-VFQFN Exposed Pad packaging, while the PE43205B-Z uses 12-WFQFN Exposed Pad packaging. Both are VFQFN variants with exposed pads, but the dimensional differences require PCB design confirmation.

Q: Does the PE43205B-Z meet current environmental standards?

A: Yes. The PE43205B-Z is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for component selection.