R574413435 RF Switch IC SP4T 18GHz Equivalent & Substitute Parts

Part Overview

The R574413435 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 50-ohm impedance and is designed for RF switching applications requiring high isolation and low insertion loss characteristics.

The R574413435 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this RF switch topology.

Key Parameters

Parameter	Value
Manufacturer Part Number	R574413435
Manufacturer	Radiall USA, Inc.
Circuit Configuration	SP4T
Frequency Range	0Hz ~ 18GHz
Impedance	50Ohm
Isolation (Minimum)	60dB
Insertion Loss (Maximum)	0.5dB
Test Frequency	18GHz
Supply Voltage	24V ~ 30V
Operating Temperature Range	-40°C ~ 85°C
Package Type	Module
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the R574413435 are classified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Critical Parameters for Substitution:

Circuit configuration (SP4T or SP3T topology)
Frequency range capability (0Hz ~ 18GHz)
Impedance specification (50Ohm)
Isolation performance (60dB minimum)
Insertion loss (0.5dB maximum)
Supply voltage range (24V ~ 30V)
Operating temperature range (-40°C ~ 85°C)
Package type (Module)

Substitution Categories:

Category 1: Direct SP4T Equivalents (Active Status) Parts R573413400 and R573413405 maintain identical SP4T circuit configuration with all electrical parameters matching the original specification. These parts are currently in active production status.

Category 2: SP3T Alternatives (Active Status) Parts R573413300, R573413305, R573413310, R573413315, R573413320, R573413330, R573413340, and R573413345 provide SP3T circuit configuration. These parts share identical frequency range, impedance, isolation, insertion loss, supply voltage, and operating temperature specifications. The circuit topology difference (SP3T versus SP4T) represents a functional reduction in switching throw count.

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

Parameter Comparison

Parameter	R574413435 (Main)	R573413400	R573413405	R573413300	R573413305	R573413310	R573413315	R573413320	R573413330	R573413340	R573413345
Manufacturer	Radiall USA, Inc.	Radiall USA, Inc.	Radiall USA, Inc.	Radiall USA, Inc.	Radiall USA, Inc.	Radiall USA, Inc.	Radiall USA, Inc.	Radiall USA, Inc.	Radiall USA, Inc.	Radiall USA, Inc.	Radiall USA, Inc.
Circuit Configuration	SP4T	SP4T	SP4T	SP3T	SP3T	SP3T	SP3T	SP3T	SP3T	SP3T	SP3T
Frequency Range	0Hz ~ 18GHz	0Hz ~ 18GHz	0Hz ~ 18GHz	0Hz ~ 18GHz	0Hz ~ 18GHz	0Hz ~ 18GHz	0Hz ~ 18GHz	0Hz ~ 18GHz	0Hz ~ 18GHz	0Hz ~ 18GHz	0Hz ~ 18GHz
Impedance	50Ohm	50Ohm	50Ohm	50Ohm	50Ohm	50Ohm	50Ohm	50Ohm	50Ohm	50Ohm	50Ohm
Isolation (Minimum)	60dB	60dB	60dB	60dB	60dB	60dB	60dB	60dB	60dB	60dB	60dB
Insertion Loss (Maximum)	0.5dB	0.5dB	0.5dB	0.5dB	0.5dB	0.5dB	0.5dB	0.5dB	0.5dB	0.5dB	0.5dB
Test Frequency	18GHz	18GHz	18GHz	18GHz	18GHz	18GHz	18GHz	18GHz	18GHz	18GHz	18GHz
Supply Voltage	24V ~ 30V	24V ~ 30V	24V ~ 30V	24V ~ 30V	24V ~ 30V	24V ~ 30V	24V ~ 30V	24V ~ 30V	24V ~ 30V	24V ~ 30V	24V ~ 30V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	Module	Module	Module	Module	Module	Module	Module	Module	Module	Module	Module
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS3 Compliance	Not specified	Not specified	Not specified	Not specified	Not specified	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (SP4T Topology):

Parts R573413400 and R573413405 provide direct functional equivalence to the R574413435. Both parts maintain SP4T circuit configuration with identical electrical specifications across all critical parameters. These parts are currently in active production status, ensuring long-term supply availability. Selection between R573413400 and R573413405 can be based on inventory availability and delivery requirements.

For Functional Alternatives (SP3T Topology):

Parts R573413300, R573413305, R573413310, R573413315, R573413320, R573413330, R573413340, and R573413345 are suitable for applications where SP3T switching capability meets system requirements. These parts share identical RF performance characteristics (frequency range, impedance, isolation, and insertion loss) with the original part. The reduction from four throw positions to three throw positions represents the primary functional difference.

Among the SP3T alternatives, parts R573413310, R573413320, R573413330, and R573413340 carry ROHS3 compliance certification, providing additional environmental compliance documentation for regulated applications.

Inventory Considerations:

All substitute parts are available in active production with confirmed inventory levels. R573413340 and R573413315 offer the highest inventory availability among SP3T options (1068 and 1035 units respectively). R573413400 and R573413405 provide SP4T alternatives with 738 and 732 units in stock respectively.

Frequently Asked Questions (FAQ)

Q: Can R573413400 or R573413405 be used as direct replacements for R574413435?

A: Yes. Both R573413400 and R573413405 maintain identical SP4T circuit configuration and share all critical electrical parameters with R574413435, including frequency range (0Hz ~ 18GHz), impedance (50Ohm), isolation (60dB minimum), insertion loss (0.5dB maximum), supply voltage (24V ~ 30V), and operating temperature range (-40°C ~ 85°C). Both parts are currently in active production status.

Q: What is the functional 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. All other electrical characteristics remain identical. SP3T parts are suitable for applications requiring only three switching positions.

Q: Are all substitute parts compatible with the same PCB layout and connector interfaces?

A: All substitute parts utilize Module package type identical to R574413435. Mechanical compatibility with existing PCB layouts and connector interfaces depends on specific module dimensions and pin configurations, which are not provided in the available parameter data.

Q: Which substitute parts carry environmental compliance certifications?

A: Parts R573413310, R573413320, R573413330, and R573413345 carry ROHS3 compliance certification. The remaining substitute parts do not have specified RoHS compliance documentation in the available data.

Q: What is the supply voltage requirement for all substitute parts?

A: All substitute parts require a supply voltage range of 24V to 30V, identical to the original R574413435 specification.

Q: Are there any differences in RF performance between the main part and substitute parts?

A: No. All substitute parts maintain identical RF performance specifications: frequency range (0Hz ~ 18GHz), impedance (50Ohm), isolation (60dB minimum), insertion loss (0.5dB maximum), and test frequency (18GHz).

Q: Which substitute part offers the best inventory availability?

A: R573413340 (SP3T configuration) offers the highest inventory level with 1068 units in stock. For SP4T direct replacements, R573413400 provides 738 units in stock.

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