R574482425 RF Switch IC SP4T 18GHz Equivalent & Substitute Parts

Part Overview

The R574482425 is a general-purpose RF switch IC with SP4T (single-pole four-throw) topology manufactured by Radiall USA, Inc. This component operates across a frequency range of 0Hz to 18GHz with 50Ohm impedance and is packaged as a module. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing system support and new designs.

Key Parameters

Parameter	Value
Manufacturer Part Number	R574482425
Manufacturer	Radiall USA, Inc.
Series	SPnT
Circuit Configuration	SP4T
Frequency Range	0Hz ~ 18GHz
Impedance	50Ohm
Isolation (Minimum)	60dB
Insertion Loss (Maximum)	0.5dB
Test Frequency	18GHz
Voltage Supply Range	10.2V ~ 13V
Operating Temperature Range	-40°C ~ 85°C
Package / Case	Module
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the R574482425 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Circuit Configuration: SP4T topology
Frequency Range: 0Hz ~ 18GHz minimum
Impedance: 50Ohm
Isolation: 60dB minimum
Insertion Loss: 0.5dB maximum
Voltage Supply: 10.2V ~ 13V
Operating Temperature: -40°C ~ 85°C
Package Type: Module

Substitute Classification:

SP4T Direct Equivalents (identical circuit topology) are listed as primary substitutes. These parts maintain the same four-throw switching capability and all electrical performance specifications.

SP3T Alternatives (reduced circuit complexity) are listed as secondary options. These parts operate within the same frequency, impedance, isolation, and insertion loss parameters but provide three-throw instead of four-throw switching capability. SP3T substitution is applicable only when system design accommodates reduced switching positions.

All substitute parts are manufactured by Radiall USA, Inc., ensuring consistency in design, manufacturing standards, and technical support.

Parameter Comparison

Part Number	Circuit	Frequency Range	Impedance	Isolation (Min)	Insertion Loss (Max)	Voltage Supply	Operating Temp	Package	Product Status	Inventory (Pcs)
R574482425	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Obsolete	1012
R573412400	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	694
R573412405	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	685
R573412420	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	1186
R573412425	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	879
R573412300	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	1092
R573412305	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	867
R573412320	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	919
R573412325	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	755
R573412335	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	734
R573412380	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	796

Engineering Selection Recommendations

Primary Substitutes (SP4T Direct Equivalents):

The following active parts provide direct functional replacement for the R574482425 with identical circuit topology and electrical specifications:

R573412420: Active status with ROHS3 compliance. Highest inventory availability (1186 pcs) among SP4T alternatives.
R573412425: Active status with ROHS3 compliance. Maintains equivalent electrical performance with 879 pcs in stock.
R573412405: Active status. Provides SP4T functionality with 685 pcs available.
R573412400: Active status. Supports SP4T switching with 694 pcs in inventory.

Secondary Substitutes (SP3T Alternatives):

The following active parts provide electrical and frequency compatibility but with reduced switching positions (three-throw instead of four-throw):

R573412320: Active status with ROHS3 compliance. SP3T configuration with 919 pcs available.
R573412300: Active status. SP3T topology with 1092 pcs in stock.
R573412380: Active status with ROHS3 compliance. SP3T switching with 796 pcs available.
R573412325: Active status with ROHS3 compliance. SP3T configuration with 755 pcs in inventory.
R573412305: Active status. SP3T topology with 867 pcs available.
R573412335: Active status with ROHS3 compliance. SP3T switching with 734 pcs in stock.

Compliance Considerations:

Parts designated as ROHS3 compliant (R573412420, R573412425, R573412320, R573412325, R573412335, R573412380) meet additional environmental regulatory requirements. Selection of ROHS3-compliant alternatives is appropriate for applications subject to environmental compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can R573412400 or R573412405 directly replace R574482425?

A: Yes. Both parts are SP4T RF switch ICs manufactured by Radiall USA, Inc., with identical electrical specifications including 0Hz to 18GHz frequency range, 50Ohm impedance, 60dB isolation, 0.5dB insertion loss, and module packaging. Both are active products, making them suitable for direct substitution in applications currently using the obsolete R574482425.

Q: What is the difference between SP4T and SP3T substitutes?

A: SP4T (single-pole four-throw) provides four switching positions, while SP3T (single-pole three-throw) provides three switching positions. All other electrical parameters—frequency range, impedance, isolation, insertion loss, voltage supply, and operating temperature—are identical. SP3T substitution is applicable only when system design accommodates the reduced number of switching positions.

Q: Are ROHS3-compliant parts interchangeable with non-compliant alternatives?

A: From an electrical and mechanical standpoint, ROHS3-compliant parts (R573412420, R573412425, R573412320, R573412325, R573412335, R573412380) are fully interchangeable with their non-compliant counterparts. Selection should be based on application regulatory requirements and environmental compliance mandates.

Q: Does packaging differ between substitute parts?

A: No. All listed substitute parts, including both SP4T and SP3T variants, are packaged as modules with identical mechanical form factors. Packaging is consistent across all alternatives.

Q: What inventory levels are available for each substitute?

A: R573412420 offers the highest SP4T inventory at 1186 pcs. R573412300 offers the highest SP3T inventory at 1092 pcs. All substitute parts maintain active inventory status, ensuring availability for procurement.

Q: Are there any electrical performance differences between SP4T substitutes?

A: No. All SP4T substitutes (R573412400, R573412405, R573412420, R573412425) maintain identical electrical specifications: 0Hz to 18GHz frequency range, 50Ohm impedance, 60dB minimum isolation, and 0.5dB maximum insertion loss. Differences are limited to product status, compliance certifications, and inventory levels.

Q: Can I use an SP3T part in a design originally specified for SP4T?

A: SP3T substitution requires design modification to accommodate three switching positions instead of four. Electrical performance parameters are equivalent, but circuit topology differs. System-level evaluation is necessary to determine feasibility.

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