R574342425 RF Switch IC SP4T 3GHz Equivalent & Substitute Parts

Part Overview

The R574342425 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 housed in a module package. 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	R574342425
Manufacturer	Radiall USA, Inc.
Series	SPnT
Circuit Configuration	SP4T
Frequency Range	0Hz ~ 3GHz
Impedance	50Ohm
Isolation	80dB (min)
Insertion Loss	0.2dB (max)
Test Frequency	3GHz
Voltage Supply	10.2V ~ 13V
Operating Temperature	-40°C ~ 85°C
Package Type	Module
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the R574342425 is determined by the following critical parameters:

Primary Substitution Criteria:

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

Substitution Logic:

Parts with identical SP4T configuration and all matching electrical parameters are direct substitutes. These include R574002400, R574002420, R574002425, R574012405, R574032400, and R574032405.

Parts with SP3T configuration (R574002325, R574012300, R574092325) share identical electrical performance parameters but differ in circuit topology, providing reduced switching capability with one fewer throw position.

All substitute parts listed maintain the same frequency range, impedance, isolation, insertion loss, supply voltage, operating temperature, and module package specifications as the original R574342425.

Parameter Comparison

Part Number	Circuit	Frequency Range	Impedance	Isolation	Insertion Loss	Supply Voltage	Operating Temp	Package	Status	RoHS
R574342425	SP4T	0Hz ~ 3GHz	50Ohm	80dB (min)	0.2dB (max)	10.2V ~ 13V	-40°C ~ 85°C	Module	Obsolete	N/A
R574002325	SP3T	0Hz ~ 3GHz	50Ohm	80dB (min)	0.2dB (max)	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	ROHS3
R574002400	SP4T	0Hz ~ 3GHz	50Ohm	80dB (min)	0.2dB (max)	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	N/A
R574002420	SP4T	0Hz ~ 3GHz	50Ohm	80dB (min)	0.2dB (max)	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	ROHS3
R574002425	SP4T	0Hz ~ 3GHz	50Ohm	80dB (min)	0.2dB (max)	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	ROHS3
R574012300	SP3T	0Hz ~ 3GHz	50Ohm	80dB (min)	0.2dB (max)	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	N/A
R574012405	SP4T	0Hz ~ 3GHz	50Ohm	80dB (min)	0.2dB (max)	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	N/A
R574032400	SP4T	0Hz ~ 3GHz	50Ohm	80dB (min)	0.2dB (max)	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	N/A
R574032405	SP4T	0Hz ~ 3GHz	50Ohm	80dB (min)	0.2dB (max)	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	N/A
R574092325	SP3T	0Hz ~ 3GHz	50Ohm	80dB (min)	0.2dB (max)	10.2V ~ 13V	-40°C ~ 85°C	Module	Active	ROHS3

Engineering Selection Recommendations

Direct SP4T Substitutes (Identical Circuit Configuration):

The following parts provide direct substitution with SP4T topology matching the original R574342425:

R574002400: Active status, no RoHS certification listed
R574002420: Active status, ROHS3 compliant
R574002425: Active status, ROHS3 compliant
R574012405: Active status, no RoHS certification listed
R574032400: Active status, no RoHS certification listed
R574032405: Active status, no RoHS certification listed

All SP4T alternatives maintain identical electrical performance across frequency range, impedance, isolation, insertion loss, supply voltage, and operating temperature specifications.

Alternative SP3T Substitutes (Reduced Switching Capability):

The following parts provide electrical equivalence with SP3T topology, offering one fewer throw position:

R574002325: Active status, ROHS3 compliant
R574012300: Active status, no RoHS certification listed
R574092325: Active status, ROHS3 compliant

SP3T alternatives are suitable only for applications requiring three or fewer switch positions while maintaining all other electrical performance parameters.

Compliance Considerations:

Parts designated ROHS3 compliant (R574002420, R574002425, R574002325, R574092325) satisfy RoHS Directive 2011/65/EU requirements. Selection of ROHS3-compliant alternatives is appropriate for applications subject to environmental compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can R574002425 directly replace R574342425?

A: Yes. R574002425 is an active SP4T RF switch IC with identical electrical parameters: 0Hz to 3GHz frequency range, 50-ohm impedance, 80dB minimum isolation, 0.2dB maximum insertion loss, 10.2V to 13V supply voltage, and -40°C to 85°C operating temperature. Both are housed in module packages. R574002425 is ROHS3 compliant.

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

A: SP4T (single-pole four-throw) provides four selectable output positions from one input. SP3T (single-pole three-throw) provides three selectable output positions. All other electrical parameters remain identical. SP3T parts are suitable only for applications requiring three or fewer switch positions.

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

A: Yes. All substitute parts listed are housed in module packages, matching the original R574342425 package specification.

Q: Which substitute parts are RoHS compliant?

A: R574002420, R574002425, R574002325, and R574092325 are designated ROHS3 compliant. The remaining substitute parts do not list RoHS certification status in available documentation.

Q: Why is the original R574342425 classified as obsolete?

A: The R574342425 is marked obsolete by the manufacturer. Active equivalent alternatives from the same SPnT series are available with identical electrical specifications and improved compliance certifications.

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

A: SP3T substitution is only valid if the application requires three or fewer switch positions. The reduced throw count limits switching capability. All other electrical performance parameters are equivalent.

Q: What inventory levels are available for substitute parts?

A: Inventory availability varies by part number. R574002425 has 1021 pieces in stock, R574002420 has 983 pieces, R574092325 has 976 pieces, R574012405 has 950 pieces, R574032400 has 896 pieces, R574032405 has 765 pieces, R574012300 has 706 pieces, R574002400 has 867 pieces, and R574002325 has 674 pieces.

Q: Are the electrical performance specifications identical across all substitute parts?

A: Yes. All substitute parts maintain identical frequency range (0Hz to 3GHz), impedance (50Ohm), isolation (80dB minimum), insertion loss (0.2dB maximum), supply voltage (10.2V to 13V), and operating temperature (-40°C to 85°C) specifications. The only differences are circuit configuration (SP4T versus SP3T) and RoHS compliance status.

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