R574403525 RF Switch IC SP5T 18GHz Equivalent & Substitute Parts

Part Overview

The R574403525 is a general-purpose RF switch integrated circuit with SP5T (single-pole five-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 R574403525 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	R574403525
Manufacturer	Radiall USA, Inc.
Circuit Configuration	SP5T
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 R574403525 are categorized based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Group 1: Direct SP5T Equivalents (Identical Circuit Configuration)

Parts R573403510, R573403515, R573403520, and R573403540 maintain identical electrical specifications to the main part:

SP5T circuit topology
0Hz ~ 18GHz frequency range
60dB minimum isolation
0.5dB maximum insertion loss
50-ohm impedance
24V ~ 30V supply voltage
-40°C ~ 85°C operating temperature
Module package type

All Group 1 substitutes carry active product status, ensuring ongoing availability and support.

Group 2: SP3T Alternative Configurations (Reduced Throw Count)

Parts R573413300, R573413305, R573413310, R573413315, R573413320, and R573413330 provide SP3T (single-pole three-throw) topology with identical electrical performance parameters:

SP3T circuit topology (three-throw instead of five-throw)
0Hz ~ 18GHz frequency range
60dB minimum isolation
0.5dB maximum insertion loss
50-ohm impedance
24V ~ 30V supply voltage
-40°C ~ 85°C operating temperature
Module package type

Group 2 substitutes are applicable only when circuit design permits reduced throw count functionality. All Group 2 parts carry active product status.

Parameter Comparison

Part Number	Circuit	Frequency Range	Impedance	Isolation (Min)	Insertion Loss (Max)	Supply Voltage	Operating Temp	Product Status	RoHS Compliance
R574403525	SP5T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Obsolete	N/A
R573403510	SP5T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573403515	SP5T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	Not Specified
R573403520	SP5T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573403540	SP5T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573413300	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	Not Specified
R573413305	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	Not Specified
R573413310	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573413315	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	Not Specified
R573413320	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573413330	SP3T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (SP5T Direct Equivalents)

For applications requiring identical SP5T functionality, R573403510, R573403515, R573403520, and R573403540 are direct electrical equivalents. All four parts maintain active product status, ensuring long-term supply chain viability compared to the obsolete R574403525.

Among these SP5T equivalents, R573403510, R573403520, and R573403540 carry ROHS3 compliance certification. Selection between these three should be based on inventory availability and specific regulatory requirements of the end application.

R573403515 provides an SP5T equivalent without specified RoHS compliance documentation. This part is suitable for applications where RoHS compliance is not a requirement.

Secondary Substitutes (SP3T Alternative Configurations)

SP3T variants R573413300, R573413305, R573413310, R573413315, R573413320, and R573413330 are applicable only when circuit design permits operation with three-throw instead of five-throw topology. These parts maintain identical RF performance specifications (isolation, insertion loss, frequency range, impedance) and supply voltage requirements.

Among SP3T options, R573413310, R573413320, and R573413330 carry ROHS3 compliance certification. R573413300, R573413305, and R573413315 do not specify RoHS compliance status.

Compliance Considerations

For new designs or applications subject to RoHS3 regulatory requirements, select from parts carrying explicit ROHS3 Compliant designation: R573403510, R573403520, R573403540 (SP5T), or R573413310, R573413320, R573413330 (SP3T).

All substitute parts operate within the identical temperature range (-40°C ~ 85°C) and supply voltage specification (24V ~ 30V) as the original R574403525.

Frequently Asked Questions (FAQ)

Q: Can R573403510, R573403515, R573403520, or R573403540 be used as direct replacements for R574403525?

A: Yes. These four SP5T parts are parametric equivalents with identical electrical specifications: 0Hz ~ 18GHz frequency range, 60dB minimum isolation, 0.5dB maximum insertion loss, 50-ohm impedance, 24V ~ 30V supply voltage, and -40°C ~ 85°C operating temperature. All four carry active product status, providing supply continuity for the obsolete R574403525.

Q: What is the difference between SP5T and SP3T configurations?

A: SP5T (single-pole five-throw) provides five selectable output paths from a single input. SP3T (single-pole three-throw) provides three selectable output paths. SP3T parts are substitutes only when circuit design permits reduced throw count functionality. RF performance specifications (isolation, insertion loss, frequency range, impedance) remain identical between SP5T and SP3T variants.

Q: Which substitute parts have RoHS3 compliance certification?

A: RoHS3 compliant parts are R573403510, R573403520, R573403540 (SP5T topology), and R573413310, R573413320, R573413330 (SP3T topology). Parts R573403515, R573413300, R573413305, and R573413315 do not specify RoHS compliance status in available documentation.

Q: Are all substitute parts available in the same packaging as R574403525?

A: Yes. All substitute parts are packaged as modules, matching the R574403525 package type. Packaging format is listed as bulk for all substitute parts.

Q: What supply voltage is required for substitute parts?

A: All substitute parts operate with 24V ~ 30V supply voltage, identical to the R574403525 specification. No voltage adjustment is required when implementing substitutes.

Q: Can SP3T parts be used in applications originally designed for SP5T?

A: SP3T substitution is possible only when circuit design permits operation with three output paths instead of five. RF performance parameters (isolation, insertion loss, frequency response, impedance) are identical. Circuit topology compatibility must be evaluated by the design engineer based on specific application requirements.

Q: What is the operating temperature range for substitute parts?

A: All substitute parts operate across -40°C ~ 85°C, matching the R574403525 temperature specification. No thermal derating or environmental adjustment is required.

Q: Are there inventory differences between substitute options?

A: Yes. Inventory levels vary: R573403510 (716 units), R573403515 (953 units), R573403520 (955 units), R573403540 (722 units), R573413300 (787 units), R573413305 (991 units), R573413310 (1030 units), R573413315 (1035 units), R573413320 (689 units), R573413330 (818 units). Availability should be confirmed with the supplier for specific procurement timelines.

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