R574412485 RF Switch IC SP4T 18GHz Equivalent & Substitute Parts

Part Overview

The R574412485 is a general-purpose RF switch IC with SP4T (single-pole four-throw) topology operating across 0Hz to 18GHz frequency range. This component is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility. The part features 50-ohm impedance, 60dB minimum isolation, and 0.5dB maximum insertion loss at 18GHz test frequency, with supply voltage range of 10.2V to 13V and operating temperature range of -40°C to 85°C.

Key Parameters

Parameter	Value
Manufacturer Part Number	R574412485
Manufacturer	Radiall USA, Inc.
Circuit Configuration	SP4T
Frequency Range	0Hz ~ 18GHz
Impedance	50Ohm
Isolation (Min)	60dB
Insertion Loss (Max)	0.5dB
Test Frequency	18GHz
Supply Voltage	10.2V ~ 13V
Operating Temperature	-40°C ~ 85°C
Package / Case	Module
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the R574412485 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Circuit configuration (SP4T topology required)
Frequency range capability (0Hz ~ 18GHz minimum)
Impedance (50Ohm)
Isolation specification (60dB minimum)
Insertion loss specification (0.5dB maximum)
Supply voltage range (10.2V ~ 13V)
Operating temperature range (-40°C ~ 85°C)
Package type (Module)

Substitution Logic: Direct substitutes maintain identical electrical performance specifications and package configuration. The R574412485 is an SP4T switch; therefore, only SP4T topology parts qualify as direct substitutes. All identified substitute parts are manufactured by Radiall USA, Inc., operate within the same frequency band, maintain identical impedance, isolation, insertion loss, supply voltage, and temperature specifications, and are housed in module packages.

Parameter Comparison

Part Number	Circuit	Frequency Range	Impedance	Isolation (Min)	Insertion Loss (Max)	Supply Voltage	Operating Temperature	Package	Product Status
R574412485	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Obsolete
R573412400	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active
R573412405	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active
R573412420	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active
R573412425	SP4T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	10.2V ~ 13V	-40°C ~ 85°C	Module	Active

Engineering Selection Recommendations

Direct Substitutes (SP4T Configuration):

The following active parts provide direct electrical and mechanical equivalence to the obsolete R574412485:

R573412400: Active status, bulk packaging, 694 units in stock
R573412405: Active status, bulk packaging, 685 units in stock
R573412420: Active status, bulk packaging, ROHS3 compliant, 1186 units in stock
R573412425: Active status, bulk packaging, ROHS3 compliant, 879 units in stock

All four parts maintain identical electrical specifications across frequency range, impedance, isolation, insertion loss, supply voltage, and operating temperature parameters. Parts R573412420 and R573412425 include ROHS3 compliance certification.

Alternative Consideration (SP3T Configuration):

SP3T topology parts (R573412300, R573412305, R573412320, R573412325, R573412335, R573412380) operate within identical electrical parameters but feature reduced switch throw capability (three positions versus four). These alternatives are suitable only when application requirements permit SP3T functionality.

Frequently Asked Questions (FAQ)

Q: Can SP3T parts substitute for the SP4T R574412485?

A: SP3T parts operate within identical electrical specifications but provide only three switch positions instead of four. Substitution is valid only if the application circuit design accommodates reduced throw capability.

Q: What is the difference between the four direct SP4T substitutes?

A: R573412400, R573412405, R573412420, and R573412425 are electrically identical across all specified parameters. Differences exist in inventory availability and compliance certifications. R573412420 and R573412425 carry ROHS3 compliance; the others do not specify this certification.

Q: Are all substitute parts available in the same packaging as the original?

A: Yes. The R574412485 and all identified substitutes are housed in module packages. All substitutes are supplied in bulk packaging format.

Q: Does the obsolete status of R574412485 affect compatibility with active substitutes?

A: No. Product status classification does not alter electrical or mechanical compatibility. Active substitutes maintain identical performance specifications and package configuration, enabling direct replacement in circuit applications.

Q: What supply voltage range applies to all substitute parts?

A: All substitute parts operate within the 10.2V to 13V supply voltage range, identical to the original R574412485.

Q: Are there frequency limitations when substituting these parts?

A: No. All substitute parts operate across the full 0Hz to 18GHz frequency range with identical 60dB isolation and 0.5dB insertion loss specifications at 18GHz test frequency.

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