RF Attenuator AT-112(40) Equivalent & Substitute Parts

Part Overview

The AT-112(40) is an RF attenuator manufactured by Hirose Electric Co Ltd, designed for inline attenuation applications across a broad frequency range. This 12dB attenuator operates from 0 Hz to 18 GHz with 50 Ohm impedance and 1W power handling capability in an SMA connector configuration. The part is currently in Last Time Buy status, making identification of equivalent and substitute components essential for ongoing system design and procurement planning.

Substiute Parts

AT-112(40)

Hirose Electric Co LtdIn Stock: 936AT-112(40) Datasheet

Current PartRFQ

AT-113-WP1(40)

Hirose Electric Co LtdIn Stock: 982AT-113-WP1(40) Datasheet

Parametric EquivalentRFQ

R411812124

Radiall USA, Inc.In Stock: 889R411812124 Datasheet

Parametric EquivalentRFQ

R411813124

Radiall USA, Inc.In Stock: 941R411813124 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AT-112(40) are identified based on the following critical parameters: attenuation value, frequency range capability, power rating, impedance, and physical package format. The AT-112(40) operates across 0 Hz to 18 GHz with 12dB attenuation.

Substitutes are grouped into two categories:

Category 1: Parametric Equivalent with Extended Frequency Range The AT-113-WP1(40) from Hirose Electric Co Ltd matches all mechanical and electrical parameters except attenuation value (13dB vs 12dB). This part maintains the full 0 Hz to 18 GHz frequency range, identical power rating, impedance, and SMA In-Line Module packaging.

Category 2: Parametric Equivalents with Reduced Frequency Range The R411812124 and R411813124 from Radiall USA, Inc. provide 12dB and 13dB attenuation respectively, with identical power rating, impedance, and SMA In-Line Module packaging. These parts operate across 0 Hz to 6 GHz, representing a reduced frequency range compared to the AT-112(40).

Parameter Comparison

Engineering Selection Recommendations

For applications requiring exact 12dB attenuation across the full 0 Hz to 18 GHz frequency range with active product status, the R411812124 from Radiall USA, Inc. provides a direct functional equivalent. This part maintains identical attenuation, power rating, impedance, and SMA In-Line Module packaging while offering ROHS3 compliance and active product availability.

For applications where attenuation tolerance permits 13dB operation across the full 0 Hz to 18 GHz frequency range, the AT-113-WP1(40) from Hirose Electric Co Ltd is available as an active product with RoHS compliance and identical frequency range coverage.

For applications limited to 0 Hz to 6 GHz frequency operation, both R411812124 (12dB) and R411813124 (13dB) from Radiall USA, Inc. are available as active products with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the AT-113-WP1(40) replace the AT-112(40) in all applications? A: The AT-113-WP1(40) differs by 1dB attenuation (13dB vs 12dB). Substitution is valid only for applications where this attenuation difference is acceptable. Both parts maintain identical frequency range (0 Hz to 18 GHz), power rating (1W), impedance (50 Ohms), and SMA In-Line Module packaging.

Q: What is the primary limitation of Radiall R411812124 and R411813124 substitutes? A: The Radiall parts operate across 0 Hz to 6 GHz, compared to the AT-112(40) frequency range of 0 Hz to 18 GHz. These substitutes are suitable only for applications operating within the 6 GHz upper frequency limit.

Q: Are all substitute parts RoHS compliant? A: Yes. The AT-112(40) and AT-113-WP1(40) are RoHS Compliant. The Radiall R411812124 and R411813124 are ROHS3 Compliant. All parts meet environmental compliance requirements.

Q: Why is the AT-112(40) marked as Last Time Buy? A: Last Time Buy status indicates this part is being discontinued. Active alternatives include the AT-113-WP1(40) from Hirose Electric Co Ltd and the R411812124 from Radiall USA, Inc., both offering equivalent electrical and mechanical specifications within their respective frequency ranges.

Q: Do all substitute parts use the same SMA connector configuration? A: Yes. All listed parts—AT-112(40), AT-113-WP1(40), R411812124, and R411813124—are configured as SMA In-Line Modules with identical mechanical packaging.