RF Attenuator AT-400-(0.5)(40) Equivalent & Substitute Parts

Part Overview

The AT-400-(0.5)(40) is a 0dB RF attenuator manufactured by Hirose Electric Co Ltd, designed for in-line applications requiring 50-ohm impedance matching across a broad frequency range of 0 Hz to 13 GHz with 2W power handling capability. This component operates as a passive RF component with N-Type connectors for direct integration into RF signal paths. The part is currently in Last Time Buy status, making identification of equivalent substitute parts essential for ongoing procurement and system continuity.

Substiute Parts

AT-400-(0.5)(40)

Hirose Electric Co LtdIn Stock: 1159AT-400-(0.5)(40) Datasheet

Current PartRFQ

R412700000

Radiall USA, Inc.In Stock: 1024R412700000 Datasheet

Parametric EquivalentRFQ

R414700000

Radiall USA, Inc.In Stock: 780R414700000 Datasheet

Parametric EquivalentRFQ

R414700161

Radiall USA, Inc.In Stock: 906R414700161 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AT-400-(0.5)(40) are qualified based on the following critical parameters: attenuation value (0dB), power rating (2W), impedance (50 Ohms), and package configuration (N-Type In-Line Module). The frequency range represents the operational bandwidth of each part and determines application suitability within specific system requirements.

Three substitute parts from Radiall USA, Inc. meet the core electrical and mechanical specifications:

• R412700000: Covers 0 Hz ~ 2 GHz frequency range
• R414700000: Covers 0 Hz ~ 12.4 GHz frequency range
• R414700161: Covers 0 Hz ~ 18 GHz frequency range

All three substitutes maintain identical attenuation, power handling, impedance, and connector type specifications. Frequency range differences determine application compatibility based on system operating bandwidth requirements.

Parameter Comparison

Engineering Selection Recommendations

R414700000 (0 Hz ~ 12.4 GHz) provides the closest frequency range coverage to the original AT-400-(0.5)(40), supporting operation up to 12.4 GHz against the original 13 GHz specification. This part maintains Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

R414700161 (0 Hz ~ 18 GHz) extends frequency coverage beyond the original specification, supporting applications requiring operation to 18 GHz. This part is Active status with ROHS3 compliance and represents the highest frequency capability among available substitutes.

R412700000 (0 Hz ~ 2 GHz) is suitable only for applications operating within the 0 Hz to 2 GHz bandwidth. Selection of this part requires confirmation that system operating frequencies do not exceed 2 GHz.

All three substitutes are manufactured by Radiall USA, Inc., with Active product status ensuring continued availability. Selection should be based on specific system frequency requirements and the maximum operating bandwidth needed for the application.

Frequently Asked Questions (FAQ)

Q: Can R412700000 replace AT-400-(0.5)(40) in all applications?

A: R412700000 is suitable only for applications operating within 0 Hz to 2 GHz. If your system requires operation above 2 GHz, this part is not compatible. Verify your system's maximum operating frequency before selection.

Q: What is the primary difference between the three Radiall substitutes?

A: The three Radiall parts are electrically identical in attenuation (0dB), power rating (2W), and impedance (50 Ohms). The only difference is frequency range: R412700000 covers to 2 GHz, R414700000 covers to 12.4 GHz, and R414700161 covers to 18 GHz. Select based on your system's maximum operating frequency.

Q: Is R414700161 a direct replacement for AT-400-(0.5)(40)?

A: R414700161 meets all electrical and mechanical specifications with extended frequency coverage to 18 GHz. It is mechanically and electrically compatible as an N-Type In-Line Module with identical attenuation, power handling, and impedance. The extended frequency range does not create incompatibility in systems operating at or below 13 GHz.

Q: Are all substitutes RoHS compliant?

A: R414700000 and R414700161 are specified as ROHS3 Compliant. R412700000 is specified as ROHS3 Compliant. The original AT-400-(0.5)(40) is RoHS Compliant. All parts meet RoHS requirements.

Q: What is the connector type for all these parts?

A: All parts use N-Type In-Line Module connectors, ensuring mechanical and electrical compatibility for direct substitution in existing RF signal paths.