RF Attenuator AT-302(40) Equivalent & Substitute Parts

Part Overview

The AT-302(40) is a 2dB RF attenuator manufactured by Hirose Electric Co Ltd, designed for RF signal conditioning applications across 0 Hz to 18 GHz frequency range. This in-line SMA module provides 1W power handling capability with 50 Ohm impedance matching. The part is currently in Last Time Buy status, indicating production discontinuation. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications requiring this attenuation specification.

Substiute Parts

AT-302(40)

Hirose Electric Co LtdIn Stock: 844AT-302(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

Substitute parts for the AT-302(40) are qualified based on matching the following critical parameters: 2dB attenuation value, 1W power rating, 50 Ohm impedance, and SMA in-line module package configuration. Frequency range compatibility is evaluated individually for each substitute, as operational bandwidth may vary while maintaining core attenuation and impedance specifications. All substitutes listed maintain RoHS compliance or equivalent environmental standards.

Parameter Comparison

Engineering Selection Recommendations

AT-102-WP1(40) serves as the primary substitute for AT-302(40), offering identical attenuation, power rating, impedance, and frequency range specifications while maintaining active product status from the same manufacturer. This part provides direct functional equivalence with no operational limitations.

CATTEN-02R0 from Crystek Corporation qualifies as a substitute for applications operating within 0 Hz to 3 GHz frequency range. While attenuation, power, and impedance specifications match, the reduced frequency bandwidth limits its use to lower-frequency applications compared to the original part.

R411802124 from Radiall USA, Inc. qualifies as a substitute for applications operating within 0 Hz to 6 GHz frequency range. Similar to CATTEN-02R0, the reduced frequency bandwidth restricts its application to mid-range frequency systems.

All three substitutes maintain current active production status and meet or exceed environmental compliance requirements of the original part.

Frequently Asked Questions (FAQ)

Q: Can AT-102-WP1(40) replace AT-302(40) in all applications? A: Yes. AT-102-WP1(40) matches all critical parameters including attenuation value, frequency range, power rating, impedance, and package configuration. It is the direct equivalent substitute.

Q: What is the frequency limitation when using CATTEN-02R0? A: CATTEN-02R0 operates from 0 Hz to 3 GHz. Applications requiring attenuation above 3 GHz must use AT-102-WP1(40) or R411802124 depending on frequency requirements.

Q: What is the frequency limitation when using R411802124? A: R411802124 operates from 0 Hz to 6 GHz. Applications requiring attenuation above 6 GHz must use AT-102-WP1(40), which supports the full 18 GHz range.

Q: Are all substitutes RoHS compliant? A: Yes. AT-102-WP1(40) is RoHS Compliant. CATTEN-02R0 and R411802124 are ROHS3 Compliant, meeting or exceeding the environmental standards of the original AT-302(40).

Q: Do all substitutes use the same SMA connector interface? A: Yes. All substitute parts use SMA in-line module packaging, ensuring mechanical and electrical interface compatibility.

Q: What is the inventory status of available substitutes? A: AT-102-WP1(40) has 670 units in stock, CATTEN-02R0 has 919 units, and R411802124 has 1111 units available as new original stock.