R574403640 RF Switch IC SP6T 18GHz Equivalent & Substitute Parts

Part Overview

The R574403640 is a general-purpose RF switch integrated circuit with SP6T (single-pole, six-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 switching applications requiring high isolation and low insertion loss characteristics.

The R574403640 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this RF switch topology.

Key Parameters

Parameter	Value
Manufacturer Part Number	R574403640
Manufacturer	Radiall USA, Inc.
Series	SPnT
Circuit Configuration	SP6T
Frequency Range	0Hz ~ 18GHz
Impedance	50Ohm
Isolation (Minimum)	60dB
Insertion Loss (Maximum)	0.5dB
Test Frequency	18GHz
Supply Voltage	24V ~ 30V
Operating Temperature Range	-40°C ~ 85°C
Package Type	Module
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the R574403640 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Frequency Range: 0Hz ~ 18GHz (exact match required)
Impedance: 50Ohm (exact match required)
Isolation: 60dB minimum (exact match required)
Insertion Loss: 0.5dB maximum (exact match required)
Supply Voltage: 24V ~ 30V (exact match required)
Operating Temperature: -40°C ~ 85°C (exact match required)
Package Type: Module (exact match required)
RF Type: General Purpose (exact match required)

Circuit Configuration Consideration: The R574403640 features an SP6T (single-pole, six-throw) configuration. Substitute parts are grouped into two categories based on circuit topology:

Direct SP6T Equivalents: Parts maintaining identical SP6T topology with all electrical parameters matching the original specification.
SP5T Alternatives: Parts with SP5T (single-pole, five-throw) topology that meet all other electrical parameters but provide one fewer throw position.

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	Impedance	Isolation (Min)	Insertion Loss (Max)	Supply Voltage	Operating Temp	Product Status	RoHS Compliance
R574403640	SP6T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Obsolete	N/A
R573403510	SP5T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573403515	SP5T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	Not Specified
R573403520	SP5T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573403540	SP5T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573403600	SP6T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573403605	SP6T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	Not Specified
R573403610	SP6T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573403610LP	SP6T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	Not Specified
R573403615	SP6T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	Not Specified
R573403620	SP6T	0Hz ~ 18GHz	50Ohm	60dB	0.5dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct SP6T Equivalents (Recommended Primary Substitutes):

The following parts maintain identical SP6T circuit topology and all electrical specifications of the R574403640:

R573403600: Active product status with ROHS3 compliance. Inventory: 1004 units.
R573403610: Active product status with ROHS3 compliance. Inventory: 681 units.
R573403620: Active product status with ROHS3 compliance. Inventory: 781 units.

These three parts are the preferred substitutes for applications requiring the original SP6T throw configuration. All three carry active product status, ensuring long-term availability and manufacturing support.

SP6T Alternatives with Extended Availability:

R573403605: Active product status. Inventory: 871 units. RoHS compliance status not specified.
R573403610LP: Active product status. Inventory: 677 units. RoHS compliance status not specified.
R573403615: Active product status. Inventory: 980 units. RoHS compliance status not specified.

SP5T Alternatives (Reduced Throw Configuration):

The following parts provide SP5T topology with identical electrical performance across all other parameters:

R573403510: Active product status with ROHS3 compliance. Inventory: 716 units.
R573403520: Active product status with ROHS3 compliance. Inventory: 955 units.
R573403540: Active product status with ROHS3 compliance. Inventory: 722 units.

SP5T alternatives are suitable only for applications where the reduced throw count (five positions instead of six) does not impact system functionality.

Compliance Consideration:

Parts designated as ROHS3 compliant meet current environmental and regulatory standards. Selection of ROHS3-compliant alternatives is recommended for new designs and applications subject to regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can R573403510, R573403520, or R573403540 (SP5T) be used as direct replacements for R574403640 (SP6T)?

A: SP5T parts provide five throw positions compared to the original SP6T's six positions. These parts are functionally equivalent only if the application requires five or fewer switch positions. If the system design requires all six throw positions, SP5T alternatives are not suitable.

Q: What is the difference between R573403610 and R573403610LP?

A: Both parts maintain identical electrical specifications, frequency range, impedance, isolation, insertion loss, supply voltage, and operating temperature. The "LP" designation indicates a variant designation but does not alter the core RF switching performance parameters. RoHS compliance status differs between the two variants.

Q: Are all substitute parts available in the same packaging as the original R574403640?

A: Yes. All substitute parts listed are packaged as modules, matching the original R574403640 package type. Packaging is specified as bulk for all substitute parts.

Q: Which substitute part offers the best long-term availability?

A: R573403615 carries the highest current inventory at 980 units among SP6T alternatives. However, R573403620 and R573403600 also maintain substantial inventory levels (781 and 1004 units respectively) with confirmed ROHS3 compliance, supporting long-term design continuity.

Q: Do all substitute parts operate across the same frequency range as the original?

A: Yes. All substitute parts operate across the identical frequency range of 0Hz to 18GHz with 50-ohm impedance, 60dB minimum isolation, and 0.5dB maximum insertion loss at 18GHz test frequency.

Q: What is the significance of ROHS3 compliance for RF switch selection?

A: ROHS3 compliance indicates conformance to Restriction of Hazardous Substances regulations. Parts designated as ROHS3 compliant meet current environmental standards and are suitable for applications subject to regulatory requirements. Parts without specified RoHS status should be evaluated against specific application requirements.

Q: Can the R574403640 be used interchangeably with any of the listed substitutes in existing designs?

A: Direct substitution is possible only with SP6T alternatives (R573403600, R573403605, R573403610, R573403610LP, R573403615, R573403620) that maintain identical circuit topology. SP5T alternatives require design evaluation to confirm that reduced throw count does not impact system performance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message