RF Attenuator 15dB 50 Ohm SMA M3933/16-36N Equivalent & Substitute Parts

Part Overview

The M3933/16-36N is an RF attenuator manufactured by Amphenol SV Microwave, designed for inline attenuation applications across microwave frequency ranges. This component provides 15dB attenuation at 50 Ohm impedance with SMA connectors, operating from DC to 18 GHz at 2W power handling capacity. The product is currently in Active status. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the specified operating range, allowing for component interchangeability in system designs where the main part becomes unavailable or when alternative sourcing is required.

Substiute Parts

M3933/16-36N

Amphenol SV MicrowaveIn Stock: 726M3933/16-36N Datasheet

Current PartRFQ

AT-115V

Hirose Electric Co LtdIn Stock: 1055AT-115V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for RF attenuators is determined by strict equivalence of electrical performance parameters. The primary criteria for substitution are:

Critical Matching Parameters:

• Attenuation Value: 15dB (exact match required)
• Frequency Range: 0 Hz ~ 18 GHz (full range coverage required)
• Impedance: 50 Ohms (exact match required)
• Power Rating: 2W (minimum requirement)
• Connector Interface: SMA In-Line Module (mechanical compatibility)

The substitute part AT-115V meets all critical electrical parameters and maintains identical frequency response, impedance, and power handling specifications. Both parts operate across the same frequency band with identical attenuation characteristics and are housed in compatible SMA in-line module packages. Differences in packaging format (Bag versus Bulk) and product status do not affect electrical or mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (M3933/16-36N): The M3933/16-36N maintains Active product status with ROHS3 compliance certification. This part is recommended for new designs and applications requiring long-term component availability and ongoing manufacturer support.

Substitute Selection (AT-115V): The AT-115V is electrically and mechanically equivalent across all critical RF performance parameters. However, this part carries Last Time Buy status, indicating limited future availability. The AT-115V is suitable for replacement applications, legacy system maintenance, or situations where immediate component sourcing from the primary manufacturer is constrained. Both parts satisfy identical ECCN and HTSUS classifications for export and tariff purposes.

Compliance Consideration: Both parts maintain RoHS compliance standards appropriate for their respective manufacturing periods. The M3933/16-36N specifies ROHS3 compliance, while AT-115V specifies RoHS compliance. Both designations satisfy current environmental and hazardous substance restrictions for electronic components.

Frequently Asked Questions (FAQ)

Q: Can AT-115V be used as a direct replacement for M3933/16-36N in existing assemblies?

A: Yes. Both parts provide identical electrical performance across the 0 Hz to 18 GHz frequency range with 15dB attenuation at 50 Ohm impedance and 2W power handling. The SMA in-line module package format ensures mechanical compatibility. No circuit modifications are required.

Q: What is the significance of the different product status designations?

A: M3933/16-36N is Active, indicating current production and ongoing availability from Amphenol SV Microwave. AT-115V is Last Time Buy status from Hirose Electric Co Ltd, meaning production is ending and future availability is limited. For new designs, the Active part is preferred. The Last Time Buy part is suitable for replacement or maintenance applications where immediate sourcing is necessary.

Q: Are there packaging considerations when substituting between these parts?

A: The M3933/16-36N is supplied in Bag packaging, while AT-115V is supplied in Bulk packaging. This difference affects order quantities and storage handling but does not impact electrical performance or mechanical fit. Verify bulk packaging quantities align with procurement requirements.

Q: Do both parts meet the same regulatory classifications?

A: Yes. Both parts share identical ECCN (EAR99) and HTSUS (8533.21.0090) classifications. Both maintain RoHS compliance standards. No additional regulatory documentation is required when substituting between these parts.

Q: What parameters must remain constant for RF attenuator substitution?

A: Attenuation value (15dB), frequency range (0 Hz ~ 18 GHz), impedance (50 Ohms), power rating (2W), and connector type (SMA) must all match exactly. Any deviation in these parameters indicates the parts are not equivalent and substitution is not valid.