PE4280 RF Switch SPDT 2.2GHz Equivalent & Substitute Parts

Part Overview

The PE4280 is a general-purpose RF switch IC with SPDT (Single Pole Double Throw) topology operating across the 5MHz to 2.2GHz frequency range. Manufactured by pSemi under the UltraCMOS® series, this component is designed for absorptive switching applications requiring 75Ohm impedance matching. The main part number 4280-52 is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

4280-52

pSemiIn Stock: 31144280-52 Datasheet

Current PartRFQ

PE4280MLIAA-Z

pSemiIn Stock: 1969PE4280MLIAA-Z Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PE4280 RF switch is determined by strict equivalence across the following critical parameters:

• Circuit topology and function: SPDT configuration with absorptive switching architecture
• Frequency performance: 5MHz to 2.2GHz operating range with 47dB isolation and 1.1dB insertion loss at 2.2GHz test frequency
• Electrical specifications: 75Ohm impedance, 26dBm P1dB, 50dBm IIP3, and 2.7V to 3.3V supply voltage range
• Physical form factor: 20-VFQFN Exposed Pad package in 4x4mm configuration
• Environmental rating: -40°C to 85°C operating temperature and MSL 1 moisture sensitivity

The substitute part PE4280MLIAA-Z maintains identical electrical performance and package specifications while differing only in RF application classification (CATV vs. General Purpose) and product status (Active vs. Obsolete). This distinction does not affect functional compatibility in absorptive SPDT switching applications.

Parameter Comparison

Engineering Selection Recommendations

PE4280MLIAA-Z is the active equivalent for the obsolete 4280-52 part number. Both components share identical electrical performance specifications and physical packaging, ensuring direct functional substitution in absorptive SPDT RF switching applications across the 5MHz to 2.2GHz frequency band.

The substitute part carries Active product status, ensuring continued manufacturer support, availability, and compliance documentation. PE4280MLIAA-Z is supplied in Tape & Reel (TR) packaging format, suitable for automated assembly processes. The RoHS Compliant certification of PE4280MLIAA-Z aligns with modern regulatory requirements for electronic components.

Selection between these parts should be based on procurement requirements: the obsolete 4280-52 remains available in limited inventory (3079 pcs), while PE4280MLIAA-Z offers long-term supply assurance with 1888 pcs in stock and active manufacturer status.

Frequently Asked Questions (FAQ)

Q: Can PE4280MLIAA-Z directly replace 4280-52 in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: SPDT topology, 47dB isolation, 1.1dB insertion loss, 26dBm P1dB, 50dBm IIP3, 75Ohm impedance, and 20-QFN (4x4) package. The RF Type designation (CATV vs. General Purpose) does not affect functional compatibility in absorptive switching applications.

Q: What is the difference between the RF Type classifications?

A: RF Type indicates the primary application domain for which the part was characterized. General Purpose and CATV classifications reflect marketing segmentation rather than functional differences. Both variants maintain identical electrical performance specifications and are suitable for absorptive SPDT switching across the 5MHz to 2.2GHz frequency range.

Q: Are there packaging differences between these parts?

A: The main part (4280-52) is supplied in bulk packaging, while the substitute (PE4280MLIAA-Z) is supplied in Tape & Reel (TR) format. Both use the identical 20-QFN (4x4) surface mount package. TR packaging is standard for high-volume automated assembly; bulk packaging may be preferred for prototype or low-volume applications.

Q: What is the MSL rating and why does it matter?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Components can be stored indefinitely without desiccant protection and do not require baking before reflow soldering, simplifying handling and assembly processes.

Q: Is PE4280MLIAA-Z RoHS compliant?

A: Yes, PE4280MLIAA-Z is RoHS Compliant. This certification confirms the part meets restrictions on hazardous substances and is suitable for applications requiring regulatory compliance with environmental standards.