RF Attenuator AT-100-(1.5)(40) Equivalent & Substitute Parts

Part Overview

The AT-100-(1.5)(40) is an RF attenuator manufactured by Hirose Electric Co Ltd, designed for inline attenuation applications across a broad frequency range. This part operates at 1.5dB attenuation with 50-ohm impedance and 1W power handling capability in an SMA connector configuration. The product is currently in Last Time Buy status, making identification of equivalent substitute parts essential for procurement planning and design continuity.

Substiute Parts

AT-100-(1.5)(40)

Hirose Electric Co LtdIn Stock: 796AT-100-(1.5)(40) Datasheet

Current PartRFQ

CATTEN-01R5

Crystek CorporationIn Stock: 1079CATTEN-01R5 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for RF attenuators is determined by matching the following critical parameters:

• Attenuation Value: Must be 1.5dB
• Impedance: Must be 50 Ohms
• Power Rating: Must be 1W minimum
• Package / Case: Must be SMA In-Line Module
• Frequency Range: Must cover the required operating bandwidth

The CATTEN-01R5 from Crystek Corporation meets the core electrical and mechanical requirements for substitution. However, the frequency range differs: the substitute operates from 0 Hz ~ 3 GHz, compared to the main part's 0 Hz ~ 18 GHz specification. This substitution is valid only for applications operating within the 0 Hz ~ 3 GHz bandwidth.

Parameter Comparison

Engineering Selection Recommendations

The AT-100-(1.5)(40) is designated Last Time Buy, indicating end-of-life status. The CATTEN-01R5 provides electrical and mechanical compatibility for applications limited to frequencies below 3 GHz. Both parts maintain equivalent RoHS compliance and export classification (EAR99).

For applications requiring operation above 3 GHz, the frequency range limitation of the CATTEN-01R5 makes it unsuitable as a direct substitute. In such cases, alternative 1.5dB, 50-ohm, 1W SMA attenuators with extended frequency coverage must be evaluated.

For applications operating within 0 Hz ~ 3 GHz, the CATTEN-01R5 is electrically and mechanically compatible with the AT-100-(1.5)(40).

Frequently Asked Questions (FAQ)

Q: Can the CATTEN-01R5 be used as a direct replacement for the AT-100-(1.5)(40) in all applications?

A: No. The CATTEN-01R5 is suitable only for applications operating within 0 Hz ~ 3 GHz. The AT-100-(1.5)(40) supports frequencies up to 18 GHz. Applications requiring operation above 3 GHz require alternative components.

Q: What are the critical parameters for RF attenuator substitution?

A: Attenuation value, impedance, power rating, package type, and frequency range must all match or exceed the original specification. For the AT-100-(1.5)(40), these are 1.5dB, 50 ohms, 1W, SMA In-Line Module, and 0 Hz ~ 18 GHz respectively.

Q: Are both parts RoHS compliant?

A: Yes. The AT-100-(1.5)(40) is RoHS Compliant, and the CATTEN-01R5 is ROHS3 Compliant. Both meet current environmental regulations.

Q: What is the physical package compatibility between these parts?

A: Both parts use SMA In-Line Module packaging, ensuring mechanical and connector compatibility in circuit designs.

Q: Why is the AT-100-(1.5)(40) marked Last Time Buy?

A: Last Time Buy status indicates the manufacturer is discontinuing production. Existing inventory may be available, but long-term availability is not guaranteed. Transition planning to alternative parts is recommended.