RF Attenuator AT-202(40) Equivalent & Substitute Parts

Part Overview

The AT-202(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 18 GHz. This component handles 1W power dissipation and features SMA connectors for direct integration into RF signal paths. The AT-202(40) is currently in Last Time Buy status, making identification of equivalent and substitute parts essential for design continuity and procurement planning.

Substiute Parts

AT-202(40)

Hirose Electric Co LtdIn Stock: 836AT-202(40) Datasheet

Current PartRFQ

AT-102-WP1(40)

Hirose Electric Co LtdIn Stock: 734AT-102-WP1(40) Datasheet

Parametric EquivalentRFQ

CATTEN-02R0

Crystek CorporationIn Stock: 974CATTEN-02R0 Datasheet

Parametric EquivalentRFQ

R411802124

Radiall USA, Inc.In Stock: 1188R411802124 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of RF attenuators is determined by matching critical electrical parameters: attenuation value (2dB), impedance (50 ohms), power handling (1W), and connector type (SMA). The frequency range defines the operational bandwidth; parts with equal or greater frequency coverage are suitable substitutes. All identified substitutes maintain the 2dB attenuation, 50-ohm impedance, 1W power rating, and SMA in-line module package. Frequency range variations exist among substitutes and must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

The AT-102-WP1(40) from Hirose Electric Co Ltd is the primary substitute for the AT-202(40). Both parts are manufactured by the same supplier, share identical electrical specifications (2dB attenuation, 0 Hz ~ 18 GHz frequency range, 1W power, 50-ohm impedance), and feature the same SMA in-line module package. The AT-102-WP1(40) maintains Active product status, ensuring long-term availability and supply chain stability.

The CATTEN-02R0 (Crystek Corporation) and R411802124 (Radiall USA, Inc.) are parametric equivalents with identical attenuation, power rating, impedance, and package type. However, both parts have reduced frequency coverage compared to the AT-202(40). The CATTEN-02R0 operates to 3 GHz, and the R411802124 operates to 6 GHz. These substitutes are suitable only for applications operating within their respective frequency limits. Both parts carry Active product status and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the AT-102-WP1(40) directly replace the AT-202(40)?

A: Yes. The AT-102-WP1(40) is a direct substitute with identical electrical parameters and package configuration. Both parts deliver 2dB attenuation across 0 Hz ~ 18 GHz at 1W power with 50-ohm impedance in SMA in-line module format.

Q: What is the difference between the AT-202(40) and AT-102-WP1(40)?

A: The primary difference is product status. The AT-202(40) is Last Time Buy, while the AT-102-WP1(40) is Active. Electrical specifications and physical packaging are identical.

Q: Can I use the CATTEN-02R0 in place of the AT-202(40)?

A: The CATTEN-02R0 is suitable only for applications operating at frequencies up to 3 GHz. The AT-202(40) operates to 18 GHz. If your application requires operation above 3 GHz, the CATTEN-02R0 is not appropriate.

Q: Can I use the R411802124 in place of the AT-202(40)?

A: The R411802124 is suitable only for applications operating at frequencies up to 6 GHz. The AT-202(40) operates to 18 GHz. If your application requires operation above 6 GHz, the R411802124 is not appropriate.

Q: Are all substitutes RoHS compliant?

A: Yes. The AT-202(40) is RoHS Compliant. The AT-102-WP1(40) is RoHS Compliant. The CATTEN-02R0 and R411802124 are ROHS3 Compliant. All parts meet RoHS requirements.

Q: What determines whether an RF attenuator can substitute for another?

A: Substitution is determined by matching attenuation value (2dB), impedance (50 ohms), power rating (1W), connector type (SMA), and package format (in-line module). Frequency range must equal or exceed the original part's specification for the application.