R413808121 RF Attenuator SMA 8dB 26.5GHz 2W Equivalent & Substitute Parts

Part Overview

The R413808121 is an RF attenuator manufactured by Radiall USA, Inc., designed for in-line SMA connector applications. This component provides 8dB attenuation across a frequency range of 0 Hz to 26.5 GHz with 50 Ohm impedance and 2W power handling capability. The part is currently in active production status with ROHS3 compliance certification.

Substitute parts are identified when equivalent electrical parameters (attenuation value, impedance, power rating) and mechanical form factor (SMA In-Line Module) are maintained, even when frequency range specifications differ. Alternative sources become necessary due to inventory availability, supply chain requirements, or specific compliance certifications needed for particular applications.

Substiute Parts

R413808121

Radiall USA, Inc.In Stock: 1029R413808121 Datasheet

Current PartRFQ

R413808115

Radiall USA, Inc.In Stock: 979R413808115 Datasheet

Parametric EquivalentRFQ

ATS-1M1F-08DB2W

Amphenol RFIn Stock: 961ATS-1M1F-08DB2W Datasheet

Parametric EquivalentRFQ

CGA-1040-08-SMA-02

Cinch Connectivity SolutionsIn Stock: 789CGA-1040-08-SMA-02 Datasheet

Parametric EquivalentRFQ

M3933/25-74S

Cinch Connectivity Solutions Midwest MicrowaveIn Stock: 1119M3933/25-74S Datasheet

Parametric EquivalentRFQ

P1AT-SAMF-6G2W-8

P1dB IncIn Stock: 758P1AT-SAMF-6G2W-8 Datasheet

Parametric EquivalentRFQ

SF0929-6200-08

Amphenol SV MicrowaveIn Stock: 766SF0929-6200-08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the R413808121 is determined by three core parameters: attenuation value (8dB), impedance (50 Ohms), and power handling (2W). All identified substitute parts maintain these three electrical specifications and utilize the SMA In-Line Module mechanical form factor, ensuring functional compatibility in circuit applications.

Frequency range variations exist among substitute parts. The R413808121 operates to 26.5 GHz, representing the highest frequency capability in this group. Substitute parts operate within reduced frequency ranges (4 GHz, 6 GHz, or 18 GHz maximum), which limits their application scope but does not prevent substitution in systems operating below their specified frequency limits.

RoHS compliance status varies across the substitute group. The R413808121 and most substitutes carry ROHS3 certification. One substitute (M3933/25-74S) is RoHS non-compliant and requires evaluation against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain the core electrical specifications (8dB attenuation, 50 Ohm impedance, 2W power handling) and mechanical form factor (SMA In-Line Module) required for functional equivalence to the R413808121.

For applications requiring operation across the full 26.5 GHz frequency range of the R413808121, no direct substitute exists within this group. The SF0929-6200-08 and M3933/25-74S provide the next highest frequency capability at 18 GHz.

For applications operating at or below 6 GHz, the ATS-1M1F-08DB2W and P1AT-SAMF-6G2W-8 are suitable substitutes with ROHS3 compliance and active product status.

For applications operating at or below 4 GHz, the R413808115 and CGA-1040-08-SMA-02 are suitable substitutes with ROHS3 compliance and active product status.

RoHS compliance requirements determine part selection in regulated environments. The M3933/25-74S is RoHS non-compliant and must be excluded from applications subject to RoHS directives.

All substitute parts carry EAR99 export classification matching the R413808121, with no additional export control considerations introduced by substitution.

Frequently Asked Questions (FAQ)

Q: Can the R413808115 substitute for the R413808121 in all applications?

A: The R413808115 maintains identical attenuation (8dB), impedance (50 Ohms), and power rating (2W) specifications. However, its frequency range is limited to 4 GHz, compared to the R413808121's 26.5 GHz capability. Substitution is valid only for applications operating at or below 4 GHz.

Q: What is the highest frequency substitute available for the R413808121?

A: The SF0929-6200-08 and M3933/25-74S both support operation to 18 GHz, representing the maximum frequency capability among available substitutes. The R413808121 remains the only part in this group rated to 26.5 GHz.

Q: Are all substitute parts RoHS compliant?

A: Six of seven substitute parts carry ROHS3 compliance certification. The M3933/25-74S is RoHS non-compliant and requires evaluation against application-specific regulatory requirements before selection.

Q: Do substitute parts use the same SMA connector configuration as the R413808121?

A: All substitute parts utilize the SMA In-Line Module form factor, ensuring mechanical compatibility with existing SMA connector interfaces. The CGA-1040-08-SMA-02 specifically designates SMA Male to SMA Female configuration in its description.

Q: What inventory levels are available for substitute parts?

A: Inventory availability ranges from 659 to 1040 pieces across the substitute group. The M3933/25-74S offers the highest inventory level at 1040 pieces, while the SF0929-6200-08 offers the lowest at 659 pieces.

Q: Can frequency range differences affect circuit performance when substituting parts?

A: Frequency range specifications define the upper operational limit of each attenuator. Substitution is valid when the application's operating frequency does not exceed the substitute part's maximum rated frequency. Operating above the rated frequency range may result in performance degradation.

Q: Are there packaging differences between the main part and substitutes?

A: The R413808121 is supplied in Bulk packaging. Most substitutes also use Bulk packaging, with the exception of M3933/25-74S, which is supplied in Bag packaging. This difference does not affect electrical or mechanical compatibility.