PE42850MLBA-X RF Switch IC Equivalent & Substitute Parts

Part Overview

The PE42850MLBA-X is a general-purpose RF switch IC manufactured by pSemi, featuring SP5T (single-pole five-throw) topology with 1 GHz operating frequency and 50Ohm impedance. This component is designed for RF signal routing applications requiring low insertion loss and high isolation across the 30MHz to 1GHz frequency range. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs.

Substiute Parts

PE42850MLBA-X

pSemiIn Stock: 1470PE42850MLBA-X Datasheet

Current PartRFQ

PE42850B-X

pSemiIn Stock: 3329PE42850B-X Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PE42850MLBA-X is determined by the following critical parameters:

• Circuit Topology: SP5T configuration is mandatory for functional equivalence
• Frequency Range: Must support 30MHz ~ 1GHz operation
• Impedance: 50Ohm characteristic impedance required
• Package: 32-VFQFN Exposed Pad (5x5) form factor for PCB compatibility
• Operating Temperature Range: -40°C ~ 85°C minimum requirement
• Supply Voltage Compatibility: Overlapping voltage range with main part

The PE42850B-X meets all substitution criteria as a direct equivalent from the same manufacturer, sharing identical circuit topology, frequency range, impedance, and package specifications.

Parameter Comparison

Engineering Selection Recommendations

The PE42850B-X is the direct substitute for PE42850MLBA-X applications. Both parts share identical mechanical and electrical interfaces, enabling drop-in replacement without PCB redesign.

The PE42850B-X offers improved performance characteristics: higher isolation (30dB minimum vs. 29dB), superior IIP3 rating (42dBm vs. 33dBm), and extended lower supply voltage support (2.3V vs. 2.7V minimum). The increased insertion loss specification (0.8dB vs. 0.4dB) must be evaluated against system gain budget requirements.

The PE42850B-X maintains active product status with ROHS3 compliance and REACH unaffected designation, ensuring long-term availability and regulatory alignment for new designs and production continuity.

Frequently Asked Questions (FAQ)

Q: Can PE42850B-X replace PE42850MLBA-X in existing designs?

A: Yes. Both parts feature identical SP5T topology, 50Ohm impedance, 32-VFQFN package, and -40°C to 85°C operating range. No PCB modifications are required.

Q: What are the performance differences between these parts?

A: PE42850B-X provides higher isolation (30dB minimum) and IIP3 (42dBm) compared to PE42850MLBA-X (29dB isolation, 33dBm IIP3). Insertion loss increases from 0.4dB to 0.8dB. Supply voltage range extends lower to 2.3V on the substitute.

Q: Why is PE42850MLBA-X discontinued?

A: Product discontinuation is a manufacturer decision. PE42850B-X is the active equivalent from pSemi's current product line.

Q: Are there any compliance differences?

A: PE42850MLBA-X is RoHS Compliant. PE42850B-X is ROHS3 Compliant with REACH unaffected status, meeting current regulatory requirements.

Q: What is the moisture sensitivity level for both parts?

A: Both parts carry MSL 3 rating with 168-hour floor life, requiring identical handling and storage protocols.

Q: Can these parts be used interchangeably in high-frequency applications?

A: Both parts operate across the identical 30MHz to 1GHz frequency range with 50Ohm impedance. Application-specific performance requirements must be evaluated based on the parameter differences listed in the comparison table.