R411804119 RF Attenuator SMA 4dB 8GHz 2W Equivalent & Substitute Parts

Part Overview

The R411804119 is an RF attenuator manufactured by Radiall USA, Inc., designed for in-line signal attenuation in RF and microwave applications. This SMA-connectorized module provides 4dB attenuation across a 0 Hz to 8 GHz frequency range with 50-ohm impedance and 2-watt power handling capability. The part is currently active in production status and ROHS3 compliant. Equivalent and substitute parts are identified for applications requiring component interchangeability, inventory optimization, or sourcing flexibility while maintaining specified electrical and mechanical performance parameters.

Key Parameters

Parameter	Value
Attenuation Value	4dB
Frequency Range	0 Hz ~ 8 GHz
Power Rating	2W
Impedance	50 Ohms
Package / Case	SMA In-Line Module
RoHS Status	ROHS3 Compliant
ECCN Classification	EAR99

Substitute Part Grouping Explanation

Substitution eligibility for the R411804119 is determined by the following core parameters: attenuation value (4dB), impedance (50 ohms), package type (SMA In-Line Module), and connector configuration (SMA male to female). All identified substitute parts maintain the 4dB attenuation specification and 50-ohm impedance requirement. Frequency range variations exist among substitutes and must be evaluated against application requirements. Power rating and RoHS compliance status are additional factors for specific use cases. Substitute parts are grouped based on frequency coverage capability and regulatory compliance alignment with the primary part.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Attenuation Value	Frequency Range	Power (Watts)	Impedance	Package / Case	RoHS Status
R411804119	Radiall USA, Inc.	4dB	0 Hz ~ 8 GHz	2W	50 Ohms	SMA In-Line Module	ROHS3 Compliant
ATS-1M1F-04DB2W	Amphenol RF	4dB	0 Hz ~ 6 GHz	2W	50 Ohms	SMA In-Line Module	ROHS3 Compliant
CGA-1040-04-SMA-02	Cinch Connectivity Solutions	4dB	0 Hz ~ 4 GHz	2W	50 Ohms	SMA In-Line Module	ROHS3 Compliant
M3933/25-66N	Cinch Connectivity Solutions Midwest Microwave	4dB	0 Hz ~ 18 GHz	Not Specified	Not Specified	SMA In-Line Module	RoHS non-compliant
P1AT-SAMF-6G2W-4	P1dB Inc	4dB	0 Hz ~ 6 GHz	2W	50 Ohms	SMA In-Line Module	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Full Compliance Alignment):

The ATS-1M1F-04DB2W (Amphenol RF) and P1AT-SAMF-6G2W-4 (P1dB Inc) are direct substitutes for applications operating within the 0 Hz to 6 GHz frequency range. Both parts maintain 4dB attenuation, 2-watt power handling, 50-ohm impedance, and ROHS3 compliance. These substitutes are suitable for applications where the full 8 GHz upper frequency limit of the R411804119 is not required.

Frequency-Limited Substitute:

The CGA-1040-04-SMA-02 (Cinch Connectivity Solutions) operates within 0 Hz to 4 GHz and is suitable only for applications with frequency requirements not exceeding 4 GHz. This part maintains 4dB attenuation, 2-watt power handling, 50-ohm impedance, and ROHS3 compliance.

Extended Frequency Substitute (Compliance Consideration):

The M3933/25-66N (Cinch Connectivity Solutions Midwest Microwave) provides the widest frequency coverage at 0 Hz to 18 GHz with 4dB attenuation. This part is qualified to MIL-DTL-M3933 military specification. However, this substitute is RoHS non-compliant and power rating is not specified. Selection of this part is appropriate only for military or legacy applications where RoHS compliance is not required and frequency coverage to 18 GHz is necessary.

Frequently Asked Questions (FAQ)

Q: Can the ATS-1M1F-04DB2W replace the R411804119 in all applications?

A: The ATS-1M1F-04DB2W is a suitable substitute for applications operating within 0 Hz to 6 GHz. If your application requires operation at frequencies between 6 GHz and 8 GHz, the R411804119 must be retained. Both parts share identical attenuation (4dB), power rating (2W), impedance (50 ohms), package type (SMA In-Line Module), and RoHS3 compliance.

Q: What is the difference between the CGA-1040-04-SMA-02 and the R411804119?

A: The primary difference is frequency range. The CGA-1040-04-SMA-02 operates from 0 Hz to 4 GHz, while the R411804119 operates from 0 Hz to 8 GHz. All other electrical parameters (4dB attenuation, 2W power, 50-ohm impedance) and package specifications are identical. The CGA-1040-04-SMA-02 is suitable only for applications with frequency requirements not exceeding 4 GHz.

Q: Why is the M3933/25-66N listed as a substitute if it is RoHS non-compliant?

A: The M3933/25-66N is included as a parametric equivalent based on attenuation value (4dB), package type (SMA In-Line Module), and extended frequency coverage (0 Hz to 18 GHz). This part is appropriate for military applications or legacy systems where RoHS compliance is not a requirement. Selection of this part requires explicit confirmation that RoHS non-compliance is acceptable for the intended application.

Q: Are all substitute parts pin-compatible with the R411804119?

A: All substitute parts use SMA In-Line Module connectors with male-to-female configuration, providing mechanical and electrical compatibility. Physical dimensions and connector orientation are consistent across all listed substitutes.

Q: What is the power rating of the M3933/25-66N?

A: The power rating for the M3933/25-66N is not specified in available technical documentation. Confirmation of power handling capability is required before selection for applications with specific power requirements.

Q: Can I use the P1AT-SAMF-6G2W-4 in place of the R411804119?

A: The P1AT-SAMF-6G2W-4 is a suitable substitute for applications operating within 0 Hz to 6 GHz. Both parts provide 4dB attenuation, 2-watt power handling, 50-ohm impedance, SMA In-Line Module packaging, and ROHS3 compliance. Applications requiring operation above 6 GHz must use the R411804119 or the M3933/25-66N.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message