PE42552MLIB Equivalent & Substitute Parts

Part Overview

The PE42552MLIB is an RF Switch IC with Single-Pole Double-Throw (SPDT) topology designed for general-purpose applications up to 7.5 GHz. Manufactured by pSemi in a 16-QFN (3x3) surface mount package, this component operates across a 3V to 3.6V supply range with 28dB isolation and 1dB insertion loss at the test frequency of 7.5 GHz. The product is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

PE42552MLIB

pSemiIn Stock: 1424PE42552MLIB Datasheet

Current PartRFQ

PE42553B-Z

pSemiIn Stock: 26780PE42553B-Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The PE42553B-Z qualifies as a substitute for the PE42552MLIB based on the following critical parameters:

Substitution Criteria:

• Circuit topology: Both are SPDT RF switches
• Impedance: Both operate at 50 Ohm
• Package form factor: Both use 16-QFN (3x3) surface mount configuration
• Mounting type: Both are surface mount devices
• Operating temperature range: Both support -40°C ~ 85°C
• Manufacturer: Both manufactured by pSemi

Key Differences Enabling Substitution: The PE42553B-Z extends the frequency range to 8 GHz (versus 7.5 GHz), provides improved isolation at 45 dB (versus 28 dB), and offers lower insertion loss at 0.85 dB (versus 1 dB). The supply voltage range is broader (2.3V ~ 5.5V versus 3V ~ 3.6V), providing greater design flexibility. The PE42553B-Z is currently in active production status, ensuring long-term availability.

Parameter Comparison

Engineering Selection Recommendations

The PE42553B-Z is the recommended substitute for the obsolete PE42552MLIB. The substitute part maintains identical circuit topology, impedance, and package footprint compatibility while offering superior electrical performance characteristics. The PE42553B-Z is in active production status, ensuring reliable long-term supply and support.

The broader supply voltage range of the PE42553B-Z (2.3V ~ 5.5V) accommodates a wider range of system power architectures compared to the original part's 3V ~ 3.6V specification. Enhanced isolation and reduced insertion loss provide measurable improvements in signal integrity for RF applications operating within the 8 GHz frequency range.

The PE42553B-Z carries ROHS3 compliance certification, meeting current environmental and regulatory requirements. The MSL rating of 3 (168 Hours) requires standard moisture control procedures during storage and handling, consistent with industry practices for surface mount components.

Frequently Asked Questions (FAQ)

Q: Can the PE42553B-Z directly replace the PE42552MLIB in existing designs?

A: Yes. Both parts share identical SPDT topology, 50 Ohm impedance, 16-QFN (3x3) package footprint, and surface mount configuration. The PE42553B-Z operates within the same temperature range and maintains electrical compatibility for applications operating up to 7.5 GHz.

Q: What are the key performance improvements in the PE42553B-Z?

A: The PE42553B-Z provides 45 dB isolation versus 28 dB, 0.85 dB insertion loss versus 1 dB, and extends the frequency range to 8 GHz. Supply voltage flexibility increases from 3V ~ 3.6V to 2.3V ~ 5.5V.

Q: Are there package differences between these parts?

A: Both use 16-QFN (3x3) packages with exposed pads. The PE42552MLIB uses 16-WFQFN while the PE42553B-Z uses 16-VFQFN variant. Both are compatible with identical PCB footprints for surface mount assembly.

Q: What is the significance of the product status difference?

A: The PE42552MLIB is obsolete, indicating discontinued production and limited availability. The PE42553B-Z is in active production, ensuring consistent supply, technical support, and long-term design viability.

Q: Does the MSL rating difference affect substitution?

A: The PE42553B-Z has MSL 3 (168 Hours) versus MSL 1 (Unlimited) for the original part. This requires standard moisture control during storage and handling but does not prevent substitution. Standard industry practices for MSL 3 components are sufficient.

Q: Are there compliance or certification considerations?

A: The PE42553B-Z is ROHS3 compliant and REACH unaffected. Both parts carry EAR99 ECCN classification and identical HTSUS codes, maintaining regulatory consistency.