R574302425 Equivalent & Substitute Parts

Part Overview

The R574302425 is an 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 50Ohm impedance and is designed for general-purpose RF switching applications. The part is 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	R574302425
Manufacturer	Radiall USA, Inc.
Circuit Configuration	SP4T
Frequency Range	0Hz ~ 3GHz
Impedance	50Ohm
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 R574302425 is determined by the following critical parameters:

Primary Substitution Criteria:

Circuit topology (SP4T or SP3T)
Frequency range capability (minimum 0Hz ~ 3GHz)
Impedance (50Ohm)
Isolation performance (80dB minimum)
Insertion loss (0.2dB maximum)
Supply voltage compatibility (10.2V ~ 13V)
Operating temperature range (-40°C ~ 85°C)
Package type (Module)

Substitution Categories:

Direct Equivalents (SP4T, 0Hz ~ 3GHz): Parts maintaining identical circuit topology and frequency specifications are classified as direct parametric equivalents. These components satisfy all electrical and mechanical requirements of the original design without modification.

Functional Equivalents (SP3T, 0Hz ~ 3GHz): Parts with SP3T topology operate within the same frequency range and impedance specifications but provide three throw positions instead of four. These are suitable for applications where the reduced switching configuration meets functional requirements.

Extended Frequency Equivalents (SP4T, DC ~ 18GHz): The R574G02425 extends frequency capability to 18GHz while maintaining SP4T topology and 50Ohm impedance. This part operates within the original supply voltage and temperature specifications but features reduced isolation (60dB minimum) and increased insertion loss (0.5dB maximum).

Parameter Comparison

Part Number	Circuit	Frequency Range	Isolation (dB)	Insertion Loss (dB)	Impedance (Ohm)	Supply Voltage (V)	Operating Temp (°C)	Product Status	Packaging
R574302425	SP4T	0Hz ~ 3GHz	80 (min)	0.2 (max)	50	10.2 ~ 13	-40 ~ 85	Obsolete	Module
R574G02425	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 parts provide direct parametric equivalence to the R574302425:

R574002400
R574002420
R574002425
R574012405
R574032400
R574032405

These components maintain identical electrical specifications including circuit topology, frequency range, impedance, isolation, insertion loss, supply voltage, and operating temperature range. All are available in active product status with bulk packaging. Selection among these parts depends on specific design requirements and availability constraints.

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

The R574G02425 is the manufacturer-recommended substitute offering extended frequency capability to 18GHz. This part maintains SP4T topology and 50Ohm impedance with compatible supply voltage and operating temperature specifications. The trade-off involves reduced isolation (60dB minimum versus 80dB minimum) and increased insertion loss (0.5dB maximum versus 0.2dB maximum). This part is suitable for applications requiring broader frequency coverage where the specified isolation and insertion loss parameters are acceptable.

Functional Alternative (SP3T, 0Hz ~ 3GHz):

The following active parts provide SP3T topology within the 0Hz ~ 3GHz frequency range:

R574002325
R574012300
R574092325

These components are suitable for applications requiring three throw positions instead of four, maintaining all other electrical specifications including impedance, isolation, insertion loss, supply voltage, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can R574002425 directly replace R574302425 in existing designs?

A: Yes. The R574002425 is a direct parametric equivalent maintaining identical circuit topology (SP4T), frequency range (0Hz ~ 3GHz), impedance (50Ohm), isolation (80dB minimum), insertion loss (0.2dB maximum), supply voltage (10.2V ~ 13V), and operating temperature range (-40°C ~ 85°C). No design modifications are required.

Q: What is the difference between SP4T and SP3T configurations?

A: SP4T (Single Pole Four Throw) provides four selectable output positions from a single input, while SP3T (Single Pole Three Throw) provides three selectable output positions. Applications requiring four switching positions must use SP4T parts. Applications requiring only three positions may use SP3T alternatives.

Q: Why does R574G02425 have different isolation and insertion loss specifications?

A: The R574G02425 extends frequency capability to 18GHz, which results in different electrical performance characteristics. The isolation specification is 60dB minimum (versus 80dB minimum for 3GHz parts) and insertion loss is 0.5dB maximum (versus 0.2dB maximum). These trade-offs are inherent to the extended frequency design.

Q: Are all substitute parts available in the same package configuration?

A: All substitute parts are supplied in Module package type. The R574G02425 includes SMA connectors as part of its module configuration, while other parts maintain standard module packaging. Connector compatibility should be verified against specific application requirements.

Q: What is the significance of product status (Active versus Obsolete)?

A: Active product status indicates current manufacturing and availability through normal distribution channels. Obsolete status indicates the part is no longer manufactured. Substitution to active parts ensures long-term component availability for production and field service applications.

Q: Are there RoHS compliance differences among the substitute parts?

A: The R574002420, R574002425, and R574092325 are specified as ROHS3 compliant. Other parts do not list RoHS compliance status in the provided specifications. Applications requiring RoHS compliance should select from the compliant parts when applicable.

Q: Can frequency range be extended beyond 3GHz while maintaining other specifications?

A: The R574G02425 extends frequency to 18GHz but with reduced isolation and increased insertion loss. For applications requiring both extended frequency and the original isolation/insertion loss specifications, alternative component families outside the provided substitute list may be required.

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