R574392425 RF Switch IC SP4T 3GHz Equivalent & Substitute Parts

Part Overview

The R574392425 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 3GHz with 50-ohm impedance and is packaged as a module. The part is currently classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value
Manufacturer Part Number	R574392425
Manufacturer	Radiall USA, Inc.
Circuit Configuration	SP4T
Frequency Range	0Hz ~ 3GHz
Impedance	50 Ohm
Isolation	80dB (min)
Insertion Loss	0.2dB (max)
Voltage Supply	10.2V ~ 13V
Operating Temperature	-40°C ~ 85°C
Package Type	Module
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the R574392425 is determined by the following critical parameters:

Primary Substitution Criteria:

Circuit topology (SP4T configuration)
Frequency range compatibility (0Hz ~ 3GHz operation)
Impedance matching (50 Ohm)
Electrical performance specifications (isolation and insertion loss)
Supply voltage range (10.2V ~ 13V)
Operating temperature range (-40°C ~ 85°C)
Package type (Module)

Substitution Categories:

Direct Parametric Equivalents (SP4T, 0Hz ~ 3GHz): Parts that maintain identical circuit topology, frequency range, and all electrical specifications. These components are fully interchangeable within the same application context.

Functional Equivalents with Extended Frequency Range (SP4T, DC ~ 18GHz): Parts that exceed the frequency specification of the original component while maintaining SP4T topology and all other electrical parameters. These provide enhanced capability for broadband applications.

Parametric Equivalents with Reduced Topology (SP3T, 0Hz ~ 3GHz): Parts that operate within the same frequency range and impedance but feature SP3T (single-pole three-throw) configuration instead of SP4T. These are suitable only for applications requiring three throw positions rather than four.

Parameter Comparison

Part Number	Circuit	Frequency Range	Isolation (dB)	Insertion Loss (dB)	Impedance (Ohm)	Supply Voltage (V)	Operating Temp (°C)	Product Status	Packaging
R574392425	SP4T	0Hz ~ 3GHz	80 (min)	0.2 (max)	50	10.2 ~ 13	-40 ~ 85	Obsolete	Module
R574G92425	SP4T	DC ~ 18GHz	60 (min)	0.5 (max)	50	10.2 ~ 13	-40 ~ 85	Active	Module, SMA Connectors
R574002325	SP3T	0Hz ~ 3GHz	80 (min)	0.2 (max)	50	10.2 ~ 13	-40 ~ 85	Active	Module
R574002400	SP4T	0Hz ~ 3GHz	80 (min)	0.2 (max)	50	10.2 ~ 13	-40 ~ 85	Active	Module
R574002420	SP4T	0Hz ~ 3GHz	80 (min)	0.2 (max)	50	10.2 ~ 13	-40 ~ 85	Active	Module
R574002425	SP4T	0Hz ~ 3GHz	80 (min)	0.2 (max)	50	10.2 ~ 13	-40 ~ 85	Active	Module
R574012300	SP3T	0Hz ~ 3GHz	80 (min)	0.2 (max)	50	10.2 ~ 13	-40 ~ 85	Active	Module
R574012405	SP4T	0Hz ~ 3GHz	80 (min)	0.2 (max)	50	10.2 ~ 13	-40 ~ 85	Active	Module
R574032400	SP4T	0Hz ~ 3GHz	80 (min)	0.2 (max)	50	10.2 ~ 13	-40 ~ 85	Active	Module
R574032405	SP4T	0Hz ~ 3GHz	80 (min)	0.2 (max)	50	10.2 ~ 13	-40 ~ 85	Active	Module
R574092325	SP3T	0Hz ~ 3GHz	80 (min)	0.2 (max)	50	10.2 ~ 13	-40 ~ 85	Active	Module

Engineering Selection Recommendations

Direct Replacement (SP4T, 0Hz ~ 3GHz):

The following active components provide direct parametric equivalence to the R574392425:

R574002400: Active status with identical electrical specifications and module packaging
R574002420: Active status with ROHS3 compliance certification and identical electrical specifications
R574002425: Active status with ROHS3 compliance certification, highest inventory availability (1021 units), and identical electrical specifications
R574012405: Active status with identical electrical specifications and module packaging
R574032400: Active status with identical electrical specifications and module packaging
R574032405: Active status with identical electrical specifications and module packaging

Among these direct equivalents, R574002425 is recommended for new designs due to active product status, ROHS3 compliance, and superior inventory availability.

Extended Frequency Range Alternative (SP4T, DC ~ 18GHz):

R574G92425: Manufacturer-recommended substitute with active status and extended frequency capability (DC ~ 18GHz). This component operates across a broader frequency spectrum while maintaining SP4T topology and identical supply voltage and operating temperature ranges. Isolation specification is reduced to 60dB minimum, and insertion loss increases to 0.5dB maximum. Module packaging includes SMA connectors. This part is suitable for applications requiring broadband RF switching beyond the 3GHz limitation of the original component.

Reduced Topology Alternatives (SP3T, 0Hz ~ 3GHz):

The following components feature SP3T topology with identical frequency range and electrical performance:

R574002325: Active status with identical electrical specifications
R574012300: Active status with identical electrical specifications
R574092325: Active status with ROHS3 compliance certification

These parts are applicable only to applications requiring three throw positions rather than four.

Frequently Asked Questions (FAQ)

Q: Can R574002425 directly replace R574392425 in existing designs?

A: Yes. R574002425 maintains identical circuit topology (SP4T), frequency range (0Hz ~ 3GHz), impedance (50 Ohm), isolation (80dB minimum), insertion loss (0.2dB maximum), supply voltage (10.2V ~ 13V), operating temperature range (-40°C ~ 85°C), and module packaging. The component is active and ROHS3 compliant.

Q: What is the difference between R574G92425 and the direct equivalents?

A: R574G92425 extends the frequency range to DC ~ 18GHz, enabling operation across a broader RF spectrum. However, isolation decreases to 60dB minimum and insertion loss increases to 0.5dB maximum. The module packaging includes SMA connectors. This component is suitable for broadband applications exceeding 3GHz operation.

Q: Can SP3T parts (R574002325, R574012300, R574092325) replace the SP4T R574392425?

A: SP3T parts provide only three throw positions compared to the four positions of SP4T topology. These components are suitable only for applications designed to operate with three switch positions. Direct SP4T equivalents are required for applications requiring four throw positions.

Q: What is the significance of ROHS3 compliance on certain substitute parts?

A: ROHS3 compliance indicates adherence to Restriction of Hazardous Substances regulations. Parts bearing this certification (R574002420, R574002425, R574092325) meet environmental and regulatory requirements for specific markets and applications. Selection of ROHS3-compliant components is necessary for applications subject to these regulatory frameworks.

Q: Are all substitute parts available in the same module packaging as R574392425?

A: All listed substitute parts are packaged as modules. R574G92425 additionally includes SMA connectors as part of its module packaging. Connector compatibility should be verified for specific application requirements.

Q: What inventory considerations apply to substitute part selection?

A: R574002425 provides the highest inventory availability at 1021 units. Other active equivalents maintain inventory levels ranging from 706 to 983 units. R574G92425 maintains 774 units in stock. Inventory levels support component availability for production requirements.

Q: How do the electrical performance specifications compare across substitute options?

A: Direct SP4T equivalents (0Hz ~ 3GHz) maintain identical isolation (80dB minimum) and insertion loss (0.2dB maximum) specifications. R574G92425 trades isolation performance (60dB minimum) and insertion loss (0.5dB maximum) for extended frequency range capability. SP3T alternatives maintain identical electrical performance within their three-position topology.

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