R574492485 RF Switch IC SP4T 18GHz Equivalent & Substitute Parts

Part Overview

The R574492485 is a general-purpose RF switch IC with SP4T (single-pole, four-throw) topology operating across 0Hz to 18GHz frequency range. Manufactured by Radiall USA, Inc., this component features 50Ohm impedance, 60dB minimum isolation, and 0.5dB maximum insertion loss at 18GHz test frequency. The part operates with a supply voltage range of 10.2V to 13V and temperature range of -40°C to 85°C in a module package format.

The R574492485 carries an obsolete product status, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Substitute parts maintain electrical and mechanical compatibility while offering active product status and current availability.

Key Parameters

Parameter	Value
Manufacturer Part Number	R574492485
Manufacturer	Radiall USA, Inc.
Series	SPnT
Circuit Configuration	SP4T
RF Type	General Purpose
Frequency Range	0Hz ~ 18GHz
Impedance	50Ohm
Isolation (Min)	60dB
Insertion Loss (Max)	0.5dB
Test Frequency	18GHz
Voltage - Supply	10.2V ~ 13V
Operating Temperature	-40°C ~ 85°C
Package / Case	Module
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the R574492485 are selected based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Circuit Configuration Match: Direct substitutes maintain SP4T topology. Parts with SP3T configuration (R573412300, R573412305, R573412320, R573412325, R573412335, R573412380) represent functional alternatives with reduced throw count but identical electrical performance across all other parameters.

Electrical Performance Parameters: All substitute parts maintain identical specifications for frequency range (0Hz ~ 18GHz), impedance (50Ohm), isolation (60dB minimum), insertion loss (0.5dB maximum), and test frequency (18GHz).

Supply Voltage and Temperature Range: All substitutes operate within the same voltage range (10.2V ~ 13V) and temperature range (-40°C ~ 85°C).

Package Format: All substitute parts use module package format, ensuring mechanical compatibility.

Product Status: Substitute parts carry active product status, providing ongoing availability and support compared to the obsolete main part.

Compliance: Select substitute parts include ROHS3 compliance certification where specified in product data.

Parameter Comparison

Part Number	Circuit	Frequency Range	Impedance	Isolation (Min)	Insertion Loss (Max)	Supply Voltage	Operating Temperature	Package	Product Status	RoHS3 Compliant
R574492485	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Obsolete	Not Specified
R573412300	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	Not Specified
R573412305	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	Not Specified
R573412320	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	ROHS3 Compliant
R573412325	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	ROHS3 Compliant
R573412335	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	ROHS3 Compliant
R573412380	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	ROHS3 Compliant
R573412400	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	Not Specified
R573412405	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	Not Specified
R573412420	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	ROHS3 Compliant
R573412425	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Topology Substitutes (SP4T Configuration)

Parts R573412400, R573412405, R573412420, and R573412425 provide direct electrical and mechanical equivalence to the R574492485, maintaining SP4T circuit configuration with identical performance across all specified parameters. These parts carry active product status, ensuring long-term availability and support.

For applications requiring ROHS3 compliance certification, R573412420 and R573412425 are specified as ROHS3 compliant and represent the preferred selection for regulated environments.

Functional Alternatives (SP3T Configuration)

Parts R573412300, R573412305, R573412320, R573412325, R573412335, and R573412380 provide functional substitution with SP3T topology, reducing the throw count from four to three positions. These parts maintain identical electrical performance specifications including frequency range, impedance, isolation, insertion loss, and operating conditions. Selection of SP3T alternatives is appropriate for applications requiring only three switch positions.

Among SP3T options, R573412320, R573412325, R573412335, and R573412380 carry ROHS3 compliance certification, providing regulatory alignment for restricted substance applications.

Frequently Asked Questions (FAQ)

Q: Can R573412400, R573412405, R573412420, or R573412425 directly replace R574492485?

A: Yes. These SP4T RF switch ICs maintain identical electrical specifications including frequency range (0Hz ~ 18GHz), impedance (50Ohm), isolation (60dB minimum), insertion loss (0.5dB maximum), supply voltage (10.2V ~ 13V), and operating temperature range (-40°C ~ 85°C). All parts use module package format. These parts carry active product status compared to the obsolete R574492485.

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

A: SP4T (single-pole, four-throw) provides four selectable output positions, while SP3T (single-pole, three-throw) provides three selectable output positions. Both configurations maintain identical electrical performance across frequency, impedance, isolation, and insertion loss parameters. Selection depends on application requirements for the number of switch positions.

Q: Are ROHS3 compliant alternatives available?

A: Yes. For SP4T topology, R573412420 and R573412425 are specified as ROHS3 compliant. For SP3T topology, R573412320, R573412325, R573412335, and R573412380 are specified as ROHS3 compliant. Non-compliant alternatives are also available for applications without regulatory restrictions.

Q: Do all substitute parts operate within the same voltage and temperature ranges?

A: Yes. All substitute parts operate within the supply voltage range of 10.2V to 13V and temperature range of -40°C to 85°C, matching the original R574492485 specifications.

Q: What packaging format is used for all substitute parts?

A: All substitute parts use module package format, ensuring mechanical compatibility with the original R574492485 component.

Q: Why is the R574492485 marked as obsolete?

A: The R574492485 carries obsolete product status. Active equivalent parts from the Radiall SPnT series provide current availability and ongoing manufacturer support for new designs and production requirements.

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