RF Attenuator 6630_SMA-50-2/199_NE Equivalent & Substitute Parts

Part Overview

The Huber+Suhner 6630_SMA-50-2/199_NE is a 30dB RF attenuator module designed for in-line applications across 0 Hz to 6 GHz frequency range with 50 Ohm impedance and 2W power handling capability. This part is classified as obsolete and no longer in active production. Identifying equivalent and substitute components is necessary to maintain system compatibility and ensure continued availability for repair, replacement, and new design implementations.

Key Parameters

Parameter	Value
Attenuation Value	30dB
Frequency Range	0 Hz ~ 6 GHz
Power Rating	2W
Impedance	50 Ohms
Package Type	SMA In-Line Module
Manufacturer	Huber+Suhner, Inc.
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the 6630_SMA-50-2/199_NE are classified based on strict parameter matching across five critical electrical and mechanical specifications: attenuation value (30dB), impedance (50 Ohms), power rating (2W), package type (SMA In-Line Module), and frequency range capability.

Direct Equivalent (Identical Parameters): Parts matching all five parameters enable direct replacement without circuit redesign.

Parametric Equivalent (Extended Frequency Range): Parts with identical attenuation, impedance, power, and package but extended frequency range (0 Hz ~ 18 GHz or 0 Hz ~ 27 GHz) provide superior performance within the original 0 Hz ~ 6 GHz operating window.

Parametric Equivalent (Reduced Frequency Range): Parts with identical attenuation, impedance, power, and package but reduced frequency range (0 Hz ~ 4 GHz or 0 Hz ~ 2 GHz) are suitable only for applications operating entirely within their specified frequency limits.

Non-Equivalent (Parameter Deviation): Parts with attenuation values other than 30dB (such as 32dB variants) do not qualify as substitutes due to signal level mismatch.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Attenuation (dB)	Frequency Range (GHz)	Power (W)	Impedance (Ω)	Package	Product Status	Inventory (Pcs)
6630_SMA-50-2/199_NE	Huber+Suhner, Inc.	30	0 ~ 6	2	50	SMA In-Line Module	Obsolete	702
6630_SMA-50-2/199_NE	Huber+Suhner, Inc.	30	0 ~ 6	2	50	SMA In-Line Module	Active	847
6630_SMA-50-1/199_NE	Huber+Suhner, Inc.	30	0 ~ 18	2	50	SMA In-Line Module	Active	1015
6630_SMA-50-3/199_NE	Huber+Suhner, Inc.	30	0 ~ 27	2	50	SMA In-Line Module	Active	681
ATT-0238-30-SMA-02	Cinch Connectivity Solutions Midwest Microwave	30	0 ~ 4	2	50	SMA In-Line Module	Active	925
CT4458-30	Cal Test Electronics	30	0 ~ 18	2	50	SMA In-Line Module	Active	876
M3933/16-12N	Cinch Connectivity Solutions Midwest Microwave	30	0 ~ 18	2	50	SMA In-Line Module	Active	837
M3933/16-12S	Cinch Connectivity Solutions Midwest Microwave	30	0 ~ 18	2	50	SMA In-Line Module	Active	789
M3933/25-26N	Cinch Connectivity Solutions Midwest Microwave	30	0 Hz ~ 2	2	50	SMA In-Line Module	Active	777

Engineering Selection Recommendations

Primary Recommendation: The active-status Huber+Suhner 6630_SMA-50-2/199_NE (Bulk packaging, 847 Pcs in stock) serves as the direct replacement for the obsolete variant. This part maintains identical electrical and mechanical specifications while offering current product support and ROHS3 compliance.

Extended Frequency Range Alternatives: The Huber+Suhner 6630_SMA-50-1/199_NE (0 Hz ~ 18 GHz) and 6630_SMA-50-3/199_NE (0 Hz ~ 27 GHz) provide superior frequency coverage while maintaining all other parameters. These are suitable for applications requiring future bandwidth expansion or multi-band operation. Both are ROHS3 compliant and actively produced.

Cross-Manufacturer Alternatives: The Cal Test Electronics CT4458-30 and Cinch Connectivity Solutions M3933/16-12N and M3933/16-12S offer 30dB attenuation across 0 Hz ~ 18 GHz with 2W power and 50 Ohm impedance. These parts are active and available in quantity. Compliance status differs: CT4458-30 is ROHS3 compliant; M3933 variants are RoHS non-compliant.

Frequency-Limited Alternatives: The Cinch ATT-0238-30-SMA-02 (0 Hz ~ 4 GHz) and M3933/25-26N (0 Hz ~ 2 GHz) are suitable only for applications operating entirely within their specified frequency ranges. These parts are active and available but offer reduced bandwidth compared to the original specification.

Non-Recommended Parts: M3933/16-57N and M3933/16-57S (32dB attenuation) do not qualify as substitutes due to attenuation value mismatch and will cause signal level deviation in the circuit.

Frequently Asked Questions (FAQ)

Q: Can the active-status 6630_SMA-50-2/199_NE directly replace the obsolete 6630_SMA-50-2/199_NE?

A: Yes. Both parts are electrically and mechanically identical, with attenuation of 30dB, frequency range of 0 Hz ~ 6 GHz, 2W power rating, 50 Ohm impedance, and SMA In-Line Module packaging. The active variant includes ROHS3 compliance certification.

Q: What is the difference between the 6630_SMA-50-1/199_NE and 6630_SMA-50-2/199_NE?

A: The primary difference is frequency range. The 6630_SMA-50-1/199_NE operates across 0 Hz ~ 18 GHz, while the 6630_SMA-50-2/199_NE is specified for 0 Hz ~ 6 GHz. All other parameters (30dB attenuation, 2W power, 50 Ohm impedance, SMA In-Line Module package) are identical. The extended-range variant is suitable for applications requiring broader frequency coverage.

Q: Can I use the M3933/16-57N or M3933/16-57S as substitutes?

A: No. These parts have 32dB attenuation instead of 30dB. Using them will introduce a 2dB signal level deviation, causing circuit performance degradation. They are not equivalent substitutes.

Q: Are there compliance differences between substitute options?

A: Yes. The Huber+Suhner variants (6630_SMA-50-2/199_NE, 6630_SMA-50-1/199_NE, 6630_SMA-50-3/199_NE) and Cal Test Electronics CT4458-30 are ROHS3 compliant. The Cinch M3933 series variants are RoHS non-compliant. Select based on your application's regulatory requirements.

Q: Which substitute offers the best frequency coverage?

A: The Huber+Suhner 6630_SMA-50-3/199_NE provides the widest frequency range at 0 Hz ~ 27 GHz while maintaining all other original specifications. This is optimal for multi-band or future-proofed designs.

Q: Can I use the ATT-0238-30-SMA-02 or M3933/25-26N in place of the original part?

A: Only if your application operates entirely within their frequency limits. The ATT-0238-30-SMA-02 is specified for 0 Hz ~ 4 GHz, and the M3933/25-26N for 0 Hz ~ 2 GHz. If your circuit requires operation above these limits, these parts are not suitable.

Q: What packaging options are available?

A: All substitute parts use SMA In-Line Module packaging, maintaining mechanical compatibility. The active Huber+Suhner 6630_SMA-50-2/199_NE is available in Bulk packaging.

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