RF Attenuator ATS-1M1F-04DB2W Equivalent & Substitute Parts

Part Overview

The Amphenol RF ATS-1M1F-04DB2W is an RF attenuator module designed for signal attenuation applications across broadband frequency ranges. This SMA in-line module provides 4dB attenuation at 50 ohms impedance with 2W power handling capability. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when alternative specifications better suit specific application requirements.

Substiute Parts

ATS-1M1F-04DB2W

Amphenol RFIn Stock: 932ATS-1M1F-04DB2W Datasheet

Current PartRFQ

CGA-1040-04-SMA-02

Cinch Connectivity SolutionsIn Stock: 1139CGA-1040-04-SMA-02 Datasheet

Parametric EquivalentRFQ

M3933/25-66N

Cinch Connectivity Solutions Midwest MicrowaveIn Stock: 1151M3933/25-66N Datasheet

Parametric EquivalentRFQ

P1AT-SAMF-6G2W-4

P1dB IncIn Stock: 1025P1AT-SAMF-6G2W-4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ATS-1M1F-04DB2W are qualified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Attenuation Value: 4dB (exact match required)
• Impedance: 50 Ohms (exact match required)
• Package Type: SMA In-Line Module (exact match required)
• Connector Configuration: SMA Male to SMA Female (exact match required)

Secondary Compatibility Parameters:

• Frequency Range: Minimum coverage of 0 Hz ~ 6 GHz operational band
• Power Rating: Minimum 2W capability
• Moisture Sensitivity Level: 1 (Unlimited) or equivalent

Parts meeting all primary criteria and secondary parameters are classified as direct parametric equivalents. Variations in frequency range extension, RoHS compliance status, or military qualification do not disqualify substitution when core electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

P1AT-SAMF-6G2W-4 (P1dB Inc) is the optimal substitute for the ATS-1M1F-04DB2W. This part provides identical electrical specifications across all critical parameters: 4dB attenuation, 0 Hz ~ 6 GHz frequency coverage, 2W power rating, and 50 ohm impedance. Both parts share ROHS3 compliance and unlimited moisture sensitivity rating. The P1dB part is available in bulk packaging and maintains active production status.

CGA-1040-04-SMA-02 (Cinch Connectivity Solutions) qualifies as a substitute with the following consideration: the frequency range is limited to 0 Hz ~ 4 GHz, which is narrower than the primary part's 0 Hz ~ 6 GHz specification. This part is suitable for applications operating exclusively within the 0 Hz ~ 4 GHz band. All other electrical and mechanical parameters match the primary part. ROHS3 compliance and unlimited moisture sensitivity are maintained.

M3933/25-66N (Cinch Connectivity Solutions Midwest Microwave) qualifies as a substitute with the following considerations: this part is RoHS non-compliant and carries military qualification under MIL-DTL-M3933. The frequency range extends to 0 Hz ~ 18 GHz, exceeding the primary part's specification. Power rating is not specified in available documentation. This part is suitable for military applications or legacy systems where RoHS compliance is not required and extended frequency coverage is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the P1AT-SAMF-6G2W-4 be used as a direct replacement for the ATS-1M1F-04DB2W?

A: Yes. The P1AT-SAMF-6G2W-4 meets all critical electrical and mechanical parameters: 4dB attenuation, 50 ohm impedance, 2W power handling, 0 Hz ~ 6 GHz frequency range, and SMA in-line module package configuration. Both parts are ROHS3 compliant with unlimited moisture sensitivity rating.

Q: What is the primary limitation of the CGA-1040-04-SMA-02 substitute?

A: The CGA-1040-04-SMA-02 has a maximum frequency specification of 4 GHz, compared to the primary part's 6 GHz upper limit. This part is suitable only for applications operating within the 0 Hz ~ 4 GHz frequency band. All other parameters, including attenuation, power rating, impedance, and package type, are equivalent.

Q: Why is the M3933/25-66N marked as RoHS non-compliant?

A: The M3933/25-66N is manufactured to military specification MIL-DTL-M3933 and predates or operates outside RoHS3 compliance requirements. This part is appropriate for military, aerospace, or legacy system applications where RoHS compliance is not mandated. The part maintains all required electrical specifications and extends frequency coverage to 18 GHz.

Q: Are all substitute parts available in the same packaging format?

A: The P1AT-SAMF-6G2W-4 and CGA-1040-04-SMA-02 are supplied in bulk packaging, matching the primary part. The M3933/25-66N is supplied in bag packaging. Packaging format does not affect electrical or mechanical compatibility; it impacts only handling and inventory management procedures.

Q: What compliance certifications are shared across all substitute parts?

A: All substitute parts share the same ECCN classification (EAR99) and HTSUS code (8533.21.0090). The P1AT-SAMF-6G2W-4 and CGA-1040-04-SMA-02 are ROHS3 compliant. REACH status varies: the primary part and CGA-1040-04-SMA-02 are REACH Affected, while the P1AT-SAMF-6G2W-4 is REACH Unaffected.

Q: Can frequency range differences affect circuit performance?

A: Frequency range specifications define the operational bandwidth of the attenuator. The CGA-1040-04-SMA-02 (4 GHz limit) is suitable for applications operating exclusively below 4 GHz. The M3933/25-66N (18 GHz capability) provides extended bandwidth. The P1AT-SAMF-6G2W-4 matches the primary part's 6 GHz specification exactly. Selection depends on the actual operating frequency requirements of the application.

Q: Is power rating a critical parameter for substitution?

A: Yes. The primary part and two primary substitutes (P1AT-SAMF-6G2W-4 and CGA-1040-04-SMA-02) are rated for 2W continuous power handling. The M3933/25-66N power rating is not specified in available documentation. Applications requiring 2W power dissipation should use parts with explicitly stated 2W ratings.