AT-405(40) RF Attenuator 5dB 50 Ohm N-Type Equivalent & Substitute Parts

Part Overview

The AT-405(40) is a 5dB 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. The product is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain the same electrical and mechanical specifications for continued system integration and maintenance.

Key Parameters

Parameter	Value
Attenuation Value	5dB
Frequency Range	0 Hz ~ 13 GHz
Impedance	50 Ohms
Power Rating	2W
Package / Case	N-Type In-Line Module
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: attenuation value (5dB), impedance (50 Ohms), power rating (2W), and package type (N-Type In-Line Module). Frequency range compatibility is evaluated based on application requirements; parts with equal or greater frequency coverage are considered suitable substitutes. All listed substitute parts maintain these core electrical and mechanical specifications.

The substitute parts are grouped by manufacturer and frequency range capability:

Huber+Suhner parts: 6805.17.A (0–12.4 GHz) and 6805_N-50-1/1--_NE (0–6 GHz)
Cinch Connectivity Solutions parts: ATT-0218-05-NNN-02 (0–12.4 GHz) and ATT-0219-05-NNN-02 (0–18 GHz)
Radiall USA parts: R412705000 (0–2 GHz), R414705000 (0–12.4 GHz), and R414705161 (0–18 GHz)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Attenuation (dB)	Frequency Range (GHz)	Power (W)	Impedance (Ω)	Package	Product Status
AT-405(40)	Hirose Electric Co Ltd	5	0 ~ 13	2	50	N-Type In-Line Module	Obsolete
6805.17.A	Huber+Suhner, Inc.	5	0 ~ 12.4	2	50	N-Type In-Line Module	Active
6805_N-50-1/1--_NE	Huber+Suhner, Inc.	5	0 ~ 6	2	50	N-Type In-Line Module	Active
ATT-0218-05-NNN-02	Cinch Connectivity Solutions Midwest Microwave	5	0 ~ 12.4	2	50	N-Type In-Line Module	Active
ATT-0219-05-NNN-02	Cinch Connectivity Solutions Midwest Microwave	5	0 ~ 18	2	50	N-Type In-Line Module	Active
R412705000	Radiall USA, Inc.	5	0 ~ 2	2	50	N-Type In-Line Module	Active
R414705000	Radiall USA, Inc.	5	0 ~ 12.4	2	50	N-Type In-Line Module	Active
R414705161	Radiall USA, Inc.	5	0 ~ 18	2	50	N-Type In-Line Module	Active

Engineering Selection Recommendations

All substitute parts listed maintain full electrical and mechanical equivalence to the AT-405(40) across the core parameters of attenuation, impedance, power rating, and connector type. Selection should be based on application frequency requirements and product availability status.

For applications requiring full frequency coverage up to 13 GHz, the ATT-0219-05-NNN-02 (0–18 GHz) and R414705161 (0–18 GHz) provide extended frequency range capability. Both are active products with RoHS compliance and current inventory availability.

For applications with frequency requirements up to 12.4 GHz, the 6805.17.A, ATT-0218-05-NNN-02, and R414705000 are suitable alternatives with active product status.

For frequency-limited applications up to 6 GHz or 2 GHz, the 6805_N-50-1/1--_NE and R412705000 respectively provide compliant substitutes with active status.

All substitute parts carry RoHS compliance or ROHS3 compliance certification, maintaining regulatory alignment with the original AT-405(40) component.

Frequently Asked Questions (FAQ)

Q: Can any of these substitute parts directly replace the AT-405(40) in all applications?

A: Direct replacement depends on application frequency requirements. The AT-405(40) operates to 13 GHz. Substitutes with equal or greater frequency range (ATT-0219-05-NNN-02 to 18 GHz, R414705161 to 18 GHz, 6805.17.A to 12.4 GHz, ATT-0218-05-NNN-02 to 12.4 GHz, R414705000 to 12.4 GHz) are suitable for full-range applications. Parts with lower frequency limits (6805_N-50-1/1--_NE to 6 GHz, R412705000 to 2 GHz) are suitable only for applications operating within their specified frequency ranges.

Q: Are all substitute parts mechanically compatible with the original N-Type connector interface?

A: Yes. All substitute parts use N-Type In-Line Module packaging, ensuring mechanical compatibility with existing connector interfaces and mounting configurations.

Q: What is the difference between RoHS and ROHS3 compliance on these parts?

A: Both certifications indicate compliance with hazardous substance restrictions. RoHS Compliant and ROHS3 Compliant designations both satisfy regulatory requirements for the AT-405(40) application context. Selection between them does not affect electrical or mechanical substitution eligibility.

Q: Which substitute part has the highest inventory availability?

A: According to current inventory data, the 6805_N-50-1/1--_NE (1158 Pcs), R414705000 (1169 Pcs), and 6805.17.A (1143 Pcs) have the highest stock levels among active substitutes.

Q: Can I use R412705000 as a substitute if my application operates at 5 GHz?

A: No. The R412705000 is specified for 0 Hz ~ 2 GHz frequency range. Applications requiring operation at 5 GHz require substitutes with frequency range specifications of at least 0 Hz ~ 5 GHz or higher, such as 6805_N-50-1/1--_NE (0–6 GHz) or any of the higher-frequency alternatives.

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