AT-402(40) RF Attenuator 2dB 50 Ohm N-Type Equivalent & Substitute Parts

Part Overview

The AT-402(40) is a 2dB RF attenuator manufactured by Hirose Electric Co Ltd, designed for inline attenuation in 50-ohm RF systems operating from DC to 13 GHz with 2W power handling capability. This component is classified as Last Time Buy, indicating discontinued production. Equivalent and substitute parts are necessary to maintain system compatibility and ensure continued availability for new designs and field replacements.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution of RF attenuators is determined by matching the following critical parameters: attenuation value (2dB), impedance (50 Ohms), power rating (2W), package type (N-Type In-Line Module), and frequency range compatibility. A substitute part is acceptable when its frequency range encompasses or matches the operating bandwidth of the original part. All listed substitutes maintain identical attenuation, impedance, power, and package specifications. Frequency range variations are noted to enable selection based on specific application requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Attenuation (dB)	Frequency Range (GHz)	Power (W)	Impedance (Ω)	Package	Product Status	RoHS Status
AT-402(40)	Hirose Electric Co Ltd	2	0 ~ 13	2	50	N-Type In-Line Module	Last Time Buy	RoHS Compliant
6802.17.A	Huber+Suhner, Inc.	2	0 ~ 12.4	2	50	N-Type In-Line Module	Active	REACH Unaffected
6802_N-50-1/1--_NE	Huber+Suhner, Inc.	2	0 ~ 6	2	50	N-Type In-Line Module	Active	ROHS3 Compliant
ATT-0218-02-NNN-02	Cinch Connectivity Solutions Midwest Microwave	2	0 ~ 12.4	2	50	N-Type In-Line Module	Active	RoHS Compliant
ATT-0219-02-NNN-02	Cinch Connectivity Solutions Midwest Microwave	2	0 ~ 18	2	50	N-Type In-Line Module	Active	RoHS Compliant
R412702000	Radiall USA, Inc.	2	0 ~ 2	2	50	N-Type In-Line Module	Active	Not Specified
R414702000	Radiall USA, Inc.	2	0 ~ 12.4	2	50	N-Type In-Line Module	Active	ROHS3 Compliant
R414702161	Radiall USA, Inc.	2	0 ~ 18	2	50	N-Type In-Line Module	Active	Not Specified

Engineering Selection Recommendations

All substitute parts listed maintain active product status and are suitable for direct replacement of the AT-402(40). Selection should be based on application frequency requirements and compliance certifications.

For applications operating across the full 0–13 GHz bandwidth of the original AT-402(40), the following parts provide equivalent or extended frequency coverage: ATT-0219-02-NNN-02 (0–18 GHz), R414702161 (0–18 GHz), 6802.17.A (0–12.4 GHz), ATT-0218-02-NNN-02 (0–12.4 GHz), and R414702000 (0–12.4 GHz).

For applications with frequency requirements below 6 GHz, 6802_N-50-1/1--_NE and R412702000 (0–2 GHz) are available alternatives.

Parts with ROHS3 compliance certification include 6802_N-50-1/1--_NE and R414702000. Parts with RoHS Compliant status include AT-402(40), ATT-0218-02-NNN-02, and ATT-0219-02-NNN-02.

Frequently Asked Questions (FAQ)

Q: Can any of these substitute parts directly replace the AT-402(40)?

A: Yes. All substitute parts maintain identical attenuation (2dB), impedance (50 Ohms), power rating (2W), and N-Type In-Line Module packaging. Selection depends on whether the application's frequency range is covered by the substitute part's specified bandwidth.

Q: What is the significance of frequency range differences among the substitutes?

A: Frequency range defines the upper operating limit of the attenuator. A substitute with a frequency range equal to or greater than the original part's range is suitable for direct replacement. For example, ATT-0219-02-NNN-02 (0–18 GHz) covers the full 0–13 GHz range of the AT-402(40), while R412702000 (0–2 GHz) is limited to applications below 2 GHz.

Q: Are all substitute parts in active production?

A: Yes. All listed substitutes carry Active product status, ensuring continued availability. The original AT-402(40) is Last Time Buy, making substitutes necessary for ongoing procurement.

Q: What compliance certifications should I consider?

A: RoHS and ROHS3 compliance certifications are provided for applicable parts. REACH Unaffected status is noted for 6802.17.A. Compliance requirements depend on application and regional regulations.

Q: Is the N-Type In-Line Module package consistent across all parts?

A: Yes. All parts, including the original AT-402(40) and all substitutes, use N-Type In-Line Module packaging, ensuring mechanical and electrical compatibility.

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