Amphenol SV Microwave M3933/16-34S

Part Overview

The M3933/16-34S is an RF attenuator manufactured by Amphenol SV Microwave, designed for inline attenuation applications in 50-ohm systems. This component provides 14 dB attenuation across a broad frequency range of 0 Hz to 18 GHz with 2W power handling capability, housed in an SMA connector package. The product maintains Active status in the current product lifecycle. Identification of equivalent substitute parts becomes necessary when managing inventory constraints, responding to supply chain disruptions, or accommodating design revisions that permit alternative attenuation values within compatible operating parameters.

Substiute Parts

M3933/16-34S

Amphenol SV MicrowaveIn Stock: 903M3933/16-34S Datasheet

Current PartRFQ

AT-115V

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

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the M3933/16-34S are qualified based on the following critical parameters that determine electrical and mechanical compatibility:

Mandatory Matching Parameters:

• Frequency Range: 0 Hz – 18 GHz
• Impedance: 50 Ohms
• Power Rating: 2W
• Package / Case: SMA In-Line Module
• Connector Type: SMA

Variable Parameter:

• Attenuation Value: Substitutes may differ from the primary component's 14 dB specification, provided the alternative attenuation value aligns with the application requirements and system design constraints.

The identified substitute, AT-115V manufactured by Hirose Electric Co Ltd, maintains all mandatory electrical and mechanical parameters while providing 15 dB attenuation, representing a 1 dB variance from the primary component.

Parameter Comparison

Engineering Selection Recommendations

Primary Component (M3933/16-34S): Selection is appropriate for new design implementations and ongoing production applications. Active product status ensures continued manufacturer support and availability. ROHS3 compliance addresses the highest regulatory environmental standards.

Substitute Component (AT-115V): Suitable for direct substitution where the 15 dB attenuation value is compatible with system design specifications. The AT-115V maintains equivalent electrical performance and mechanical compatibility across the full operational frequency range. Note that AT-115V carries a Last Time Buy product status, indicating that this component is approaching end-of-life; inventory planning should reflect this constraint. Both components satisfy EAR99 export classification requirements and HTSUS tariff code alignment.

Frequently Asked Questions (FAQ)

Q: Can AT-115V replace M3933/16-34S in existing designs? A: AT-115V is mechanically and electrically compatible for SMA connector applications requiring 0 Hz–18 GHz operation at 50 ohms with 2W power handling. Substitution validity depends on whether the 15 dB attenuation value aligns with the circuit design specifications, as this represents a 1 dB difference from the primary component.

Q: What is the significance of the "Last Time Buy" status for AT-115V? A: Last Time Buy designation indicates that the manufacturer has announced end-of-production. This component remains available for purchase but at a finite inventory level. For long-term applications, inventory procurement planning should prioritize the Active-status M3933/16-34S to ensure sustained supply chain continuity.

Q: Are there compliance or regulatory differences between the two parts? A: Both components satisfy EAR99 export classification and align with HTSUS code 8533.21.0090. The primary difference is RoHS certification level: M3933/16-34S meets ROHS3 standards, while AT-115V meets general RoHS compliance. Both comply with environmental regulatory requirements for electronics manufacturing.

Q: How does the 1 dB attenuation difference affect system performance? A: Substitution feasibility depends on system link budget and application requirements. A 1 dB difference in attenuation may be acceptable in systems with sufficient headroom or margin. Circuit-level validation is required if the design specifications mandate precise attenuation tolerance matching the original 14 dB value.

Q: Are both components available with identical packaging? A: Both components utilize SMA In-Line Module packaging, ensuring mechanical compatibility for connector-based installations. M3933/16-34S is supplied in Bag packaging format with 848 pieces available; AT-115V is supplied in Bulk format with 1040 pieces in stock.