RF Attenuator 5dB 50 Ohm SMA M3933/14-09S Equivalent & Substitute Parts

Part Overview

The M3933/14-09S is an RF attenuator manufactured by Amphenol SV Microwave, designed for inline attenuation applications in RF and microwave systems. This component provides 5dB attenuation across a frequency range of 0 Hz to 12.4 GHz with 50 Ohm impedance and 2W power handling capability in an SMA connector configuration. The part is currently in Active product status with 1082 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained, allowing for component interchangeability in system designs where the main part becomes unavailable or when alternative sourcing is required.

Substiute Parts

M3933/14-09S

Amphenol SV MicrowaveIn Stock: 1099M3933/14-09S Datasheet

Current PartRFQ

AT-105V

Hirose Electric Co LtdIn Stock: 805AT-105V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of RF attenuators is determined by matching critical electrical and mechanical parameters. The M3933/14-09S can be substituted with equivalent parts that maintain the following specifications:

Critical Matching Parameters:

• Attenuation Value: 5dB (exact match required)
• Impedance: 50 Ohms (exact match required)
• Power Rating: 2W (exact match required)
• Package / Case: SMA In-Line Module (exact match required)
• Frequency Range: Must encompass or exceed 0 Hz ~ 12.4 GHz

Compliance Parameters:

• RoHS Status: ROHS3 Compliant or equivalent RoHS Compliant
• ECCN Classification: EAR99

The AT-105V from Hirose Electric Co Ltd meets all critical electrical parameters and maintains compliance requirements, making it a valid parametric equivalent. The AT-105V extends the frequency range to 18 GHz, providing broader operational capability while maintaining all other specifications.

Parameter Comparison

Engineering Selection Recommendations

M3933/14-09S Selection Criteria: The M3933/14-09S is the primary component choice when Active product status and continuous availability are required. This part maintains ROHS3 compliance and is currently in production with established supply channels. Use this part for new designs and applications requiring long-term component availability.

AT-105V Selection Criteria: The AT-105V is classified as Last Time Buy, indicating limited future availability. This substitute is suitable for replacement applications, legacy system maintenance, or when extended frequency range capability (18 GHz versus 12.4 GHz) provides system advantages. The AT-105V maintains full electrical equivalence and RoHS compliance. Component selection should account for the Last Time Buy status when planning production schedules or long-term inventory requirements.

Compliance Considerations: Both parts maintain EAR99 export classification and RoHS compliance standards. The M3933/14-09S carries ROHS3 certification, while the AT-105V carries standard RoHS certification. Both certifications are acceptable for equivalent component substitution in compliant applications.

Frequently Asked Questions (FAQ)

Q: Can the AT-105V be used as a direct replacement for the M3933/14-09S?

A: Yes. The AT-105V meets all critical electrical parameters: 5dB attenuation, 50 Ohm impedance, 2W power rating, and SMA In-Line Module package. The extended frequency range to 18 GHz provides additional operational capability while maintaining backward compatibility with the 12.4 GHz specification of the M3933/14-09S.

Q: What is the significance of the Last Time Buy status for the AT-105V?

A: Last Time Buy indicates that the AT-105V will not be manufactured beyond a specified date. This status affects long-term supply planning and inventory decisions. For applications requiring extended component availability, the M3933/14-09S is the recommended choice due to its Active product status.

Q: Are there packaging differences between these parts?

A: Yes. The M3933/14-09S is supplied in Bag packaging, while the AT-105V is supplied in Bulk packaging. Packaging differences do not affect electrical performance or mechanical compatibility but may influence inventory management and handling procedures.

Q: Do both parts meet the same compliance standards?

A: Both parts are EAR99 classified and RoHS compliant. The M3933/14-09S carries ROHS3 certification, while the AT-105V carries standard RoHS certification. Both certifications satisfy RoHS compliance requirements for equivalent component substitution.

Q: What parameters must remain identical for substitution?

A: Attenuation value (5dB), impedance (50 Ohms), power rating (2W), and package type (SMA In-Line Module) must remain identical. Frequency range may be extended without affecting substitution validity, provided the extended range encompasses the original specification.