R574412435 RF Switch IC SP4T 18GHz Equivalent & Substitute Parts

Part Overview

The R574412435 is a general-purpose RF switch IC with SP4T (single-pole four-throw) topology designed for operation up to 18GHz. Manufactured by Radiall USA, Inc., this component operates at 50 ohm impedance with 60dB minimum isolation and 0.5dB maximum insertion loss. 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	R574412435
Manufacturer	Radiall USA, Inc.
Circuit Configuration	SP4T
Frequency Range	0Hz ~ 18GHz
Isolation (Minimum)	60dB
Insertion Loss (Maximum)	0.5dB
Test Frequency	18GHz
Impedance	50Ohm
Supply Voltage Range	10.2V ~ 13V
Operating Temperature Range	-40°C ~ 85°C
Package Type	Module
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the R574412435 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Circuit configuration (SP4T topology required for direct replacement)
Frequency range capability (0Hz ~ 18GHz minimum)
Isolation performance (60dB minimum)
Insertion loss specification (0.5dB maximum)
Impedance matching (50 ohm)
Supply voltage compatibility (10.2V ~ 13V)
Operating temperature range (-40°C ~ 85°C)
Package type (Module)
RF type classification (General Purpose)

Substitution Categories:

Category 1: Direct SP4T Equivalents (Active Status) Parts maintaining identical SP4T circuit configuration with all electrical parameters matching the original specification. These provide direct functional replacement without topology modification.

Category 2: SP3T Alternatives (Active Status) Parts with SP3T circuit configuration (single-pole three-throw) that meet all electrical performance parameters. These represent functional alternatives where system design accommodates reduced throw count.

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

Parameter Comparison

Part Number	Circuit	Frequency Range	Isolation (Min)	Insertion Loss (Max)	Impedance	Supply Voltage	Operating Temp	Product Status	RoHS3 Compliant
R574412435	SP4T	0Hz ~ 18GHz	60dB	0.5dB	50Ohm	10.2V ~ 13V	-40°C ~ 85°C	Obsolete	Not Specified
R573412400	SP4T	0Hz ~ 18GHz	60dB	0.5dB	50Ohm	10.2V ~ 13V	-40°C ~ 85°C	Active	Not Specified
R573412405	SP4T	0Hz ~ 18GHz	60dB	0.5dB	50Ohm	10.2V ~ 13V	-40°C ~ 85°C	Active	Not Specified
R573412420	SP4T	0Hz ~ 18GHz	60dB	0.5dB	50Ohm	10.2V ~ 13V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573412425	SP4T	0Hz ~ 18GHz	60dB	0.5dB	50Ohm	10.2V ~ 13V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573412300	SP3T	0Hz ~ 18GHz	60dB	0.5dB	50Ohm	10.2V ~ 13V	-40°C ~ 85°C	Active	Not Specified
R573412305	SP3T	0Hz ~ 18GHz	60dB	0.5dB	50Ohm	10.2V ~ 13V	-40°C ~ 85°C	Active	Not Specified
R573412320	SP3T	0Hz ~ 18GHz	60dB	0.5dB	50Ohm	10.2V ~ 13V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573412325	SP3T	0Hz ~ 18GHz	60dB	0.5dB	50Ohm	10.2V ~ 13V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573412335	SP3T	0Hz ~ 18GHz	60dB	0.5dB	50Ohm	10.2V ~ 13V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573412380	SP3T	0Hz ~ 18GHz	60dB	0.5dB	50Ohm	10.2V ~ 13V	-40°C ~ 85°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (SP4T Configuration):

For applications requiring identical SP4T topology without design modification, the following active alternatives are available:

R573412420 and R573412425 are preferred selections due to ROHS3 compliance certification, supporting modern supply chain requirements and environmental regulations.
R573412400 and R573412405 provide functionally equivalent alternatives with active product status but without specified RoHS3 compliance documentation.

All SP4T alternatives maintain complete electrical parameter equivalence to the obsolete R574412435, including frequency range, isolation, insertion loss, impedance, supply voltage, and operating temperature specifications.

Alternative Topology (SP3T Configuration):

For applications where system design can accommodate reduced throw count (three positions instead of four), SP3T alternatives provide active product status with identical electrical performance across all critical parameters:

R573412320, R573412325, R573412335, and R573412380 include ROHS3 compliance certification.
R573412300 and R573412305 provide active alternatives without specified RoHS3 compliance.

SP3T substitution requires design review to confirm that three-throw functionality satisfies application requirements.

Inventory Availability:

Current stock levels across all substitute parts range from 685 to 1186 units, ensuring supply continuity for production requirements.

Frequently Asked Questions (FAQ)

Q: Can R573412400, R573412405, R573412420, or R573412425 be used as direct replacements for R574412435?

A: Yes. R573412400, R573412405, R573412420, and R573412425 are direct SP4T equivalents maintaining identical electrical specifications: 0Hz ~ 18GHz frequency range, 60dB minimum isolation, 0.5dB maximum insertion loss, 50 ohm impedance, 10.2V ~ 13V supply voltage, and -40°C ~ 85°C operating temperature. All are manufactured by Radiall USA, Inc., in module packaging. R573412420 and R573412425 include ROHS3 compliance certification.

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. All other electrical parameters remain identical. SP3T substitution requires confirmation that application design accommodates three-position switching instead of four.

Q: Are all substitute parts in active production status?

A: Yes. All listed substitute parts maintain active product status, ensuring ongoing availability and manufacturing support. The original R574412435 is classified as obsolete.

Q: What is the significance of ROHS3 compliance?

A: ROHS3 compliance indicates conformance to Restriction of Hazardous Substances regulations. R573412420, R573412425, R573412320, R573412325, R573412335, and R573412380 carry ROHS3 certification. This certification supports compliance requirements in regulated industries and modern supply chain standards.

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

A: SP3T parts provide identical electrical performance but with reduced switching positions. Application compatibility depends on whether the system design requires four distinct output paths or can function with three. System-level design review is necessary to confirm functional equivalence.

Q: Are all substitute parts packaged identically to R574412435?

A: Yes. All substitute parts are supplied in module packaging, matching the original part's physical form factor and mounting requirements.

Q: What inventory levels are available for each substitute part?

A: Current inventory ranges from 685 to 1186 units across all substitute parts. R573412420 maintains the highest stock level at 1186 units. Specific quantities are available for each part number listed in the parameter comparison table.

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