AT-406(40) RF Attenuator 6dB 50 Ohm N-Type Equivalent & Substitute Parts

Part Overview

The AT-406(40) is a 6dB RF attenuator manufactured by Hirose Electric Co Ltd, designed for in-line attenuation applications across 0 Hz to 13 GHz frequency range with 50 Ohm impedance and 2W power handling capability. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. Substitute parts maintain the core electrical specifications while offering active product status from alternative manufacturers.

Key Parameters

Parameter	Value
Attenuation Value	6dB
Frequency Range	0 Hz ~ 13 GHz
Impedance	50 Ohms
Power Rating	2W
Package / Case	N-Type In-Line Module
Product Status	Obsolete
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the AT-406(40) is determined by three critical parameters: attenuation value (6dB), impedance (50 Ohms), and package type (N-Type In-Line Module). All substitute parts listed maintain these core specifications. Frequency range variations are permitted when the substitute part's upper frequency limit meets or exceeds the application requirement. Power rating remains constant at 2W across all equivalents. Substitute parts are grouped by manufacturer and frequency capability to support component selection based on specific application bandwidth requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Attenuation	Frequency Range	Power (W)	Impedance	Package	Product Status	RoHS Status
AT-406(40)	Hirose Electric Co Ltd	6dB	0 Hz ~ 13 GHz	2W	50 Ohms	N-Type In-Line Module	Obsolete	RoHS Compliant
6806.17.A	Huber+Suhner, Inc.	6dB	0 Hz ~ 12.4 GHz	2W	50 Ohms	N-Type In-Line Module	Active	REACH Unaffected
6806.17.B	Huber+Suhner, Inc.	6dB	0 Hz ~ 18 GHz	2W	50 Ohms	N-Type In-Line Module	Active	REACH Unaffected
6806_N-50-1/1--_NE	Huber+Suhner, Inc.	6dB	0 Hz ~ 6 GHz	2W	50 Ohms	N-Type In-Line Module	Active	ROHS3 Compliant
ATT-0218-06-NNN-02	Cinch Connectivity Solutions Midwest Microwave	6dB	0 Hz ~ 12.4 GHz	2W	50 Ohms	N-Type In-Line Module	Active	RoHS Compliant
ATT-0219-06-NNN-02	Cinch Connectivity Solutions Midwest Microwave	6dB	0 Hz ~ 18 GHz	2W	50 Ohms	N-Type In-Line Module	Active	ROHS3 Compliant
R412706000	Radiall USA, Inc.	6dB	0 Hz ~ 2 GHz	2W	50 Ohms	N-Type In-Line Module	Active	ROHS3 Compliant
R414706000	Radiall USA, Inc.	6dB	0 Hz ~ 12.4 GHz	2W	50 Ohms	N-Type In-Line Module	Active	ROHS3 Compliant
R414706150	Radiall USA, Inc.	6dB	0 Hz ~ 18 GHz	2W	50 Ohms	N-Type In-Line Module	Active	ROHS3 Compliant
R414706161	Radiall USA, Inc.	6dB	0 Hz ~ 18 GHz	2W	50 Ohms	N-Type In-Line Module	Active	Not Specified

Engineering Selection Recommendations

All listed substitute parts maintain active product status with current manufacturer support, providing supply chain continuity for the obsolete AT-406(40). Selection between substitute options depends on application frequency requirements. For applications operating below 6 GHz, the 6806_N-50-1/1--_NE offers ROHS3 compliance. For applications requiring 12.4 GHz capability, ATT-0218-06-NNN-02, 6806.17.A, and R414706000 are suitable options. For broadband applications extending to 18 GHz, ATT-0219-06-NNN-02, 6806.17.B, R414706150, and R414706161 provide extended frequency coverage. All substitute parts maintain identical attenuation (6dB), impedance (50 Ohms), power rating (2W), and N-Type In-Line Module packaging as the original AT-406(40).

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a lower frequency range than the AT-406(40)? A: No. The AT-406(40) operates to 13 GHz. Substitute parts must have a maximum frequency rating equal to or greater than 13 GHz to ensure full compatibility. The 6806_N-50-1/1--_NE (6 GHz maximum) and R412706000 (2 GHz maximum) are not suitable for this application.

Q: Are all substitute parts mechanically compatible with the AT-406(40)? A: Yes. All substitute parts use N-Type In-Line Module packaging, ensuring mechanical compatibility with existing RF systems designed for the AT-406(40).

Q: What is the difference between ROHS3 and RoHS Compliant designations? A: Both designations indicate RoHS compliance. ROHS3 represents the current RoHS 3 directive standard. Parts marked as RoHS Compliant meet RoHS requirements. Both are acceptable for applications requiring RoHS compliance.

Q: Which substitute part offers the best frequency coverage? A: ATT-0219-06-NNN-02, 6806.17.B, R414706150, and R414706161 all provide 0 Hz to 18 GHz coverage, exceeding the AT-406(40) specification of 13 GHz and supporting the widest range of applications.

Q: Are there inventory considerations when selecting a substitute? A: All substitute parts maintain active inventory status. Specific availability should be confirmed with component distributors based on current demand and lead time requirements.

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