RF Attenuator M3933/16-23S Equivalent & Substitute Parts

Part Overview

The M3933/16-23S is an RF attenuator manufactured by Amphenol SV Microwave, designed for inline attenuation applications in RF and microwave systems. This component provides 6.5dB attenuation across a frequency range of 0 Hz to 18 GHz with 50-ohm impedance and 2W power handling capability in an SMA connector configuration. The part is currently in active production status with 892 units available in new original inventory. Substitute parts may be required due to supply constraints, inventory availability, or specific application requirements where alternative attenuation values are acceptable within system design parameters.

Substiute Parts

M3933/16-23S

Amphenol SV MicrowaveIn Stock: 974M3933/16-23S Datasheet

Current PartRFQ

AT-107V

Hirose Electric Co LtdIn Stock: 698AT-107V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for RF attenuators is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Critical Parameters for Substitution:

• Frequency range coverage (must encompass or match 0 Hz ~ 18 GHz)
• Impedance matching (50 Ohms required)
• Power handling capability (minimum 2W)
• Connector type (SMA In-Line Module format)
• Attenuation value tolerance (within acceptable system design margins)

The AT-107V from Hirose Electric Co Ltd qualifies as a parametric equivalent based on matching frequency range, impedance, power rating, and package configuration. The attenuation value differs at 7dB versus 6.5dB; this 0.5dB variance represents a minor deviation that may be acceptable depending on circuit design specifications and system gain budget requirements.

Parameter Comparison

Engineering Selection Recommendations

M3933/16-23S Selection Criteria: The M3933/16-23S is the primary component choice when exact 6.5dB attenuation is required and active production status is preferred. This part maintains full ROHS3 compliance and offers the highest current inventory availability at 892 units.

AT-107V Selection Criteria: The AT-107V serves as a substitute when the 0.5dB attenuation variance (7dB versus 6.5dB) is acceptable within system design tolerances. This part carries Last Time Buy status, indicating limited future availability. Selection of AT-107V should be evaluated against circuit gain budget requirements and system performance specifications. Both parts maintain equivalent RoHS compliance and identical electrical performance across the 0 Hz to 18 GHz frequency band.

Compliance Considerations: Both parts are classified under ECCN EAR99 and HTSUS 8533.21.0090, meeting regulatory requirements for RF component distribution. RoHS compliance is confirmed for both options.

Frequently Asked Questions (FAQ)

Q: Can AT-107V be used as a direct replacement for M3933/16-23S?

A: AT-107V is a parametric equivalent with matching frequency range, impedance, power rating, and SMA connector configuration. The 0.5dB attenuation difference (7dB versus 6.5dB) must be evaluated against specific circuit requirements. Direct substitution is possible only if system design permits this attenuation variance.

Q: What is the significance of the attenuation value difference?

A: The M3933/16-23S provides 6.5dB attenuation while AT-107V provides 7dB. In RF systems, this 0.5dB difference affects signal level reduction. Applications with tight gain budget specifications may require the exact 6.5dB value. Applications with broader tolerance margins can accommodate the 7dB variant.

Q: Are there packaging differences between these parts?

A: Both parts use identical SMA In-Line Module packaging. No mechanical or connector modifications are required for substitution from a physical integration standpoint.

Q: What is the Last Time Buy status on AT-107V?

A: Last Time Buy indicates that Hirose Electric Co Ltd has announced limited future production of this part. While 647 units are currently in inventory, long-term availability cannot be guaranteed. For applications requiring sustained supply, M3933/16-23S with Active status is recommended.

Q: Do both parts meet RoHS requirements?

A: Yes. M3933/16-23S is ROHS3 compliant and AT-107V is RoHS compliant. Both parts satisfy environmental and regulatory requirements for electronic component distribution.

Q: What frequency range do these attenuators cover?

A: Both M3933/16-23S and AT-107V operate across 0 Hz to 18 GHz, providing coverage for DC through microwave frequencies including S-band, C-band, X-band, and Ku-band applications.