R574492425 RF Switch IC SP4T 18GHz Equivalent & Substitute Parts

Part Overview

The R574492425 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 signal routing applications. The part is currently classified as obsolete, necessitating identification of active equivalent and substitute components to maintain design continuity and ensure ongoing component availability for production and field service applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	R574492425
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 Range	10.2V ~ 13V
Operating Temperature Range	-40°C ~ 85°C
Package Type	Module
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the R574492425 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

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

Manufacturer Recommended Substitute: The R574G92425 represents the direct manufacturer-recommended replacement, maintaining identical electrical specifications while offering active product status and enhanced packaging options with SMA connectors.

Parametric Equivalents: Parts R573412400 and R573412405 provide SP4T circuit configuration with identical electrical performance specifications. Parts R573412300, R573412305, R573412320, R573412325, R573412335, and R573412380 offer SP3T circuit configuration with equivalent electrical parameters, suitable for applications requiring reduced switching paths.

Parameter Comparison

Parameter	R574492425 (Main)	R574G92425 (MFR Recommended)	R573412400 (SP4T Equiv.)	R573412405 (SP4T Equiv.)	R573412420 (SP4T Equiv.)	R573412300 (SP3T Equiv.)
Circuit Configuration	SP4T	SP4T	SP4T	SP4T	SP4T	SP3T
Frequency Range	0Hz ~ 18GHz	DC ~ 18GHz	0Hz ~ 18GHz	0Hz ~ 18GHz	0Hz ~ 18GHz	0Hz ~ 18GHz
Impedance	50Ohm	50Ohm	50Ohm	50Ohm	50Ohm	50Ohm
Isolation (Min)	60dB	60dB	60dB	60dB	60dB	60dB
Insertion Loss (Max)	0.5dB	0.5dB	0.5dB	0.5dB	0.5dB	0.5dB
Supply Voltage	10.2V ~ 13V	10.2V ~ 13V	10.2V ~ 13V	10.2V ~ 13V	10.2V ~ 13V	10.2V ~ 13V
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
Package Type	Module	Module, SMA Connectors	Module	Module	Module	Module
Product Status	Obsolete	Active	Active	Active	Active	Active
Series	SPnT	RAMSES	SPnT	SPnT	SPnT	SPnT

Engineering Selection Recommendations

For Direct Replacement (Identical Topology): Select R574G92425 when the application requires SP4T switching functionality with active product status and manufacturer support. This part maintains all electrical specifications of the R574492425 while offering enhanced packaging with integrated SMA connectors and improved moisture sensitivity rating (MSL 1 Unlimited versus Not Applicable).

For SP4T Topology with Active Status: Parts R573412400, R573412405, and R573412420 provide SP4T circuit configuration with active product status. R573412420 offers additional RoHS3 compliance certification. These parts are suitable for new designs or field replacements where SP4T switching is required.

For SP3T Topology Alternatives: Parts R573412300, R573412305, R573412320, R573412325, R573412335, and R573412380 provide SP3T circuit configuration with identical electrical performance. These parts are applicable only when the application can accommodate reduced switching paths (three throw positions instead of four). Parts R573412320, R573412325, R573412335, and R573412380 include RoHS3 compliance certification.

Compliance Considerations: When RoHS3 compliance is a design requirement, select from R573412320, R573412325, R573412335, R573412380 (SP3T), or R573412420 (SP4T).

Frequently Asked Questions (FAQ)

Q: Can R574G92425 be used as a direct replacement for R574492425? A: Yes. R574G92425 is the manufacturer-recommended substitute with identical electrical specifications (SP4T topology, 0Hz-18GHz frequency range, 50-ohm impedance, 60dB isolation, 0.5dB insertion loss, 10.2V-13V supply voltage, -40°C to 85°C operating temperature). The primary differences are active product status and enhanced packaging with SMA connectors.

Q: What is the difference between SP4T and SP3T configurations? A: SP4T (single-pole four-throw) provides four output switching paths, while SP3T (single-pole three-throw) provides three output switching paths. SP3T parts are suitable only for applications requiring three or fewer switched outputs. All other electrical parameters remain identical.

Q: Are the SP3T alternatives electrically equivalent to the R574492425? A: SP3T parts match all electrical specifications (frequency range, impedance, isolation, insertion loss, supply voltage, operating temperature) but differ in circuit topology. They are parametric equivalents suitable only for applications where the reduced number of switching paths is acceptable.

Q: What does RoHS3 compliance indicate? A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting specific hazardous materials in electrical and electronic equipment. Parts R573412320, R573412325, R573412335, R573412380, and R573412420 carry this certification.

Q: Does packaging type affect electrical performance? A: No. All parts maintain identical electrical specifications regardless of packaging. R574G92425 includes integrated SMA connectors as a packaging enhancement, while other parts use standard module packaging. Connector integration affects mechanical integration only, not RF performance.

Q: What is the significance of MSL (Moisture Sensitivity Level) ratings? A: MSL 1 Unlimited (R574G92425) indicates no moisture sensitivity restrictions during storage and handling. Parts with "Not Applicable" MSL designation have no specified moisture sensitivity requirements. This affects storage and handling procedures but not electrical performance.

Q: Can parts from the original substitute list (R573432445, R573452425, R573442400, R573482420, R573422445) be used? A: The original substitute list provided with R574492425 is not included in the current active inventory data. Selection should be based on the active substitute parts listed in this reference with confirmed current availability and active product status.

Q: What inventory levels are available for each substitute? A: R574G92425 (774 units), R573412300 (1092 units), R573412305 (867 units), R573412320 (919 units), R573412325 (755 units), R573412335 (734 units), R573412380 (796 units), R573412400 (694 units), R573412405 (685 units), R573412420 (1186 units). Inventory levels should be confirmed with the supplier for current availability.

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