R574333045 RF Switch IC SP10T 3GHz Equivalent & Substitute Parts

Part Overview

The R574333045 is a general-purpose RF switch integrated circuit with SP10T (single-pole 10-throw) topology operating across 0Hz to 3GHz frequency range. This component features 50-ohm impedance, 80dB minimum isolation, and 0.2dB maximum insertion loss at 3GHz test frequency. The part is classified as obsolete, necessitating identification of active equivalent and substitute components from the Radiall USA, Inc. SPnT series for continued system design and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	R574333045
Manufacturer	Radiall USA, Inc.
Series	SPnT
Circuit Configuration	SP10T
Frequency Range	0Hz ~ 3GHz
Impedance	50Ohm
Isolation (min)	80dB
Insertion Loss (max)	0.2dB
Test Frequency	3GHz
Supply Voltage	24V ~ 30V
Operating Temperature	-40°C ~ 85°C
Package Type	Module
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the R574333045 is determined by the following critical parameters:

Primary Substitution Criteria:

Frequency range compatibility (0Hz ~ 3GHz operation required)
Impedance matching (50-ohm characteristic impedance)
Isolation performance (80dB minimum)
Insertion loss specification (0.2dB maximum)
Supply voltage range (24V ~ 30V)
Operating temperature range (-40°C ~ 85°C)
Package form factor (Module)
RF type classification (General Purpose)

Substitution Categories:

Direct Functional Equivalent (MFR Recommended): R574433045 operates at extended frequency range (0Hz ~ 18GHz) with identical electrical interface and supply specifications, though with reduced isolation (55dB) and increased insertion loss (0.7dB).
Parametric Equivalents (Lower Throw Count): Parts with SP3T, SP4T, and SP6T configurations maintain identical frequency range, impedance, isolation, insertion loss, and thermal specifications as the original SP10T device. These components provide reduced switching complexity for applications requiring fewer throw positions.
Parametric Equivalents (Same Throw Count): No active SP10T alternatives are available; the extended-frequency R574433045 represents the only manufacturer recommendation for this topology.

Parameter Comparison

Part Number	Circuit	Frequency Range	Impedance	Isolation (min)	Insertion Loss (max)	Supply Voltage	Operating Temp	Product Status	RoHS Status
R574333045	SP10T	0Hz ~ 3GHz	50Ohm	80dB	0.2dB	24V ~ 30V	-40°C ~ 85°C	Obsolete	N/A
R574433045	SP10T	0Hz ~ 18GHz	50Ohm	55dB	0.7dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573503400	SP4T	0Hz ~ 3GHz	50Ohm	80dB	0.2dB	24V ~ 30V	-40°C ~ 85°C	Active	N/A
R573513620	SP6T	0Hz ~ 3GHz	50Ohm	80dB	0.2dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573513625	SP6T	0Hz ~ 3GHz	50Ohm	80dB	0.2dB	24V ~ 30V	-40°C ~ 85°C	Active	ROHS3 Compliant
R573523310	SP3T	0Hz ~ 3GHz	50Ohm	80dB	0.2dB	24V ~ 30V	-40°C ~ 85°C	Active	N/A
R573523410	SP4T	0Hz ~ 3GHz	50Ohm	80dB	0.2dB	24V ~ 30V	-40°C ~ 85°C	Active	N/A
R573533400	SP4T	0Hz ~ 3GHz	50Ohm	80dB	0.2dB	24V ~ 30V	-40°C ~ 85°C	Active	N/A
R573533600	SP6T	0Hz ~ 3GHz	50Ohm	80dB	0.2dB	24V ~ 30V	-40°C ~ 85°C	Active	N/A
R574003300	SP3T	0Hz ~ 3GHz	50Ohm	80dB	0.2dB	24V ~ 30V	-40°C ~ 85°C	Active	N/A
R574003335	SP3T	0Hz ~ 3GHz	50Ohm	80dB	0.2dB	24V ~ 30V	-40°C ~ 85°C	Active	N/A

Engineering Selection Recommendations

For Direct Replacement (Same Topology):

The R574433045 is the manufacturer-recommended substitute for the obsolete R574333045. Both components feature identical SP10T switching topology and electrical interface specifications. The R574433045 extends frequency capability to 18GHz while maintaining 24V to 30V supply voltage and -40°C to 85°C operating temperature range. This part carries ROHS3 compliance certification and active product status, ensuring long-term availability and supply chain continuity.

Trade-offs in selecting R574433045 include reduced isolation performance (55dB versus 80dB) and increased insertion loss (0.7dB versus 0.2dB) compared to the original part. These parameters remain within acceptable ranges for general-purpose RF switching applications operating at 3GHz and below.

For Reduced Complexity Applications:

When system design permits reduction in switching throw count, the following active alternatives provide identical RF performance at 3GHz operation with 80dB isolation and 0.2dB insertion loss:

SP3T configurations: R573523310, R574003300, R574003335
SP4T configurations: R573503400, R573523410, R573533400
SP6T configurations: R573513620, R573513625, R573533600

These components maintain full compatibility with 24V to 30V supply voltage and -40°C to 85°C operating temperature specifications. Selection among these alternatives depends on the specific number of switch positions required by the application circuit.

Compliance Considerations:

Parts designated ROHS3 Compliant (R574433045, R573513620, R573513625) satisfy environmental and hazardous substance restrictions applicable to electronic components in regulated markets. Remaining alternatives do not specify RoHS compliance status but remain available for applications without such requirements.

Frequently Asked Questions (FAQ)

Q: Can R574433045 directly replace R574333045 in existing circuit designs?

A: R574433045 provides direct functional replacement with identical SP10T topology and supply voltage specifications. The extended frequency range (18GHz versus 3GHz) and modified isolation/insertion loss characteristics do not prevent operation in 3GHz-and-below applications. Circuit validation is required to confirm that reduced isolation (55dB) and increased insertion loss (0.7dB) meet system performance requirements.

Q: What is the primary difference between the original R574333045 and available substitutes?

A: The original R574333045 is obsolete with no active production. All substitute options are active products from Radiall USA, Inc. The manufacturer-recommended R574433045 maintains identical topology but extends frequency range. Parametric equivalents reduce throw count (SP3T, SP4T, SP6T) while preserving RF performance at 3GHz operation.

Q: Are lower throw-count alternatives (SP3T, SP4T, SP6T) suitable for applications designed for SP10T?

A: Lower throw-count alternatives are suitable only when system design permits reduction in available switch positions. These parts maintain identical frequency range, impedance, isolation, insertion loss, supply voltage, and operating temperature specifications. Application circuit redesign is necessary to accommodate the reduced number of selectable output paths.

Q: What packaging format applies to all listed substitute parts?

A: All substitute components, including the original R574333045, are supplied in Module package form factor. No alternative packaging options are available within the provided substitute list.

Q: How do isolation and insertion loss specifications affect component selection?

A: Isolation (80dB for 3GHz-rated parts, 55dB for R574433045) determines signal separation between switch paths. Insertion loss (0.2dB for 3GHz-rated parts, 0.7dB for R574433045) represents signal attenuation through the active switch path. Applications requiring maximum signal integrity and minimal crosstalk should prioritize parts with 80dB isolation and 0.2dB insertion loss specifications.

Q: Are there inventory considerations when selecting between substitute options?

A: Current inventory levels vary across available alternatives. Selection based solely on inventory availability is not recommended; component choice should prioritize electrical compatibility and application requirements. Inventory status is subject to change and should be confirmed at time of procurement.

Q: What is the significance of ROHS3 compliance designation?

A: ROHS3 compliance indicates the component meets Restriction of Hazardous Substances Directive requirements applicable in European Union and other regulated markets. Components without explicit RoHS designation may not satisfy regulatory requirements for certain applications or geographic regions.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message