RF Attenuator 8dB 50 Ohm SMA M3933/16-10S Equivalent & Substitute Parts

Part Overview

The M3933/16-10S is an RF attenuator module manufactured by Amphenol SV Microwave, designed for inline attenuation in RF/microwave signal paths. This component operates across a broad frequency range from DC to 18 GHz with 8dB attenuation and 50-ohm impedance, suitable for 2-watt power applications in SMA-connectorized configurations. The M3933/16-10S maintains Active product status. Identifying substitute parts becomes necessary when primary sourcing is constrained, when alternative manufacturers provide equivalent electrical and mechanical performance, or when specific packaging or compliance requirements necessitate alternative options.

Substiute Parts

M3933/16-10S

Amphenol SV MicrowaveIn Stock: 1144M3933/16-10S Datasheet

Current PartRFQ

AT-108V

Hirose Electric Co LtdIn Stock: 1067AT-108V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for RF attenuators is determined by electrical and mechanical parameter matching. The following criteria define equivalent and substitutable components:

Critical Matching Parameters:

• Attenuation Value: 8dB (exact match required)
• Frequency Range: 0 Hz ~ 18 GHz (minimum coverage required)
• Impedance: 50 Ohms (impedance matching is mandatory)
• Power Rating: 2W (minimum power handling capacity)
• Connector Type and Package: SMA In-Line Module (mechanical and interface compatibility)

The substitute part AT-108V manufactured by Hirose Electric Co Ltd meets all critical electrical parameters and maintains compatible SMA in-line packaging. Both parts satisfy the same frequency, impedance, attenuation, and power specifications, enabling direct functional substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The M3933/16-10S maintains Active product status with ROHS3 compliance and continued manufacturing support. The AT-108V is classified as Last Time Buy, indicating limited future availability from the manufacturer. For new designs and long-term applications, the M3933/16-10S is the preferred choice due to active production status. The AT-108V may be selected for legacy system maintenance or when inventory availability from the primary supplier is temporarily constrained, provided that existing stock at 989 units remains available. Both components comply with EAR99 export classification and identical HTSUS coding, supporting equivalent supply chain handling.

Frequently Asked Questions (FAQ)

Q: Can AT-108V directly replace M3933/16-10S in existing designs? A: Yes. Both components maintain identical electrical specifications (8dB attenuation, 0 Hz ~ 18 GHz frequency range, 50 Ohm impedance, 2W power rating) and SMA in-line module packaging, enabling direct functional substitution without circuit modification.

Q: What distinguishes these two attenuators? A: The primary differences are manufacturer identity and product lifecycle status. M3933/16-10S is manufactured by Amphenol SV Microwave with Active status, while AT-108V is manufactured by Hirose Electric Co Ltd and designated as Last Time Buy. Electrical and mechanical performance are equivalent.

Q: Are there compatibility concerns with different packaging types? A: Both parts are supplied in SMA in-line module form factors. M3933/16-10S is available in bag packaging, while AT-108V is supplied in bulk packaging. Mechanical compatibility remains unchanged; packaging difference affects only shipment and inventory organization.

Q: Does RoHS compliance differ between these parts? A: Both are RoHS compliant. M3933/16-10S specifies ROHS3 compliance, while AT-108V indicates general RoHS compliance. Both satisfy RoHS directives and are suitable for applications requiring lead-free, halogen-restricted components.

Q: What should be considered when selecting between these parts? A: For new designs and production continuation, select M3933/16-10S due to Active product status and ongoing manufacturer support. Select AT-108V only when M3933/16-10S availability is constrained and existing AT-108V stock is available, given its Last Time Buy designation limits future supply.