RF Attenuator AT-2310(40) Equivalent & Substitute Parts

Part Overview

The AT-2310(40) is a 10dB RF attenuator manufactured by Hirose Electric Co Ltd, designed for RF signal attenuation applications across 0 Hz to 2.5 GHz frequency range with 50 Ohm impedance and 1W power handling capability. The part features SMA in-line module packaging and is RoHS compliant. This part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing system support and procurement planning.

Key Parameters

Parameter	Value
Manufacturer Part Number	AT-2310(40)
Manufacturer	Hirose Electric Co Ltd
Attenuation Value	10dB
Frequency Range	0 Hz ~ 2.5 GHz
Power Rating	1W
Impedance	50 Ohms
Package / Case	SMA In-Line Module
Product Status	Obsolete
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the AT-2310(40) is determined by the following critical parameters:

Attenuation Value: Must be 10dB (±1dB tolerance acceptable for engineering applications)
Impedance: Must be 50 Ohms
Power Rating: Must be minimum 1W
Package / Case: Must be SMA In-Line Module
Frequency Range: Must encompass or exceed the original 0 Hz ~ 2.5 GHz specification

Parts meeting these core electrical and mechanical parameters are classified as parametric equivalents. The substitute list includes five active alternatives from manufacturers Hirose Electric Co Ltd, Huber+Suhner Inc., Crystek Corporation, and Radiall USA Inc., all meeting the mandatory substitution criteria.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Attenuation Value	Frequency Range	Power (Watts)	Impedance	Package / Case	Product Status	RoHS Status
AT-2310(40)	Hirose Electric Co Ltd	10dB	0 Hz ~ 2.5 GHz	1W	50 Ohms	SMA In-Line Module	Obsolete	RoHS Compliant
AT-110-WP1(40)	Hirose Electric Co Ltd	10dB	0 Hz ~ 18 GHz	1W	50 Ohms	SMA In-Line Module	Active	RoHS Compliant
6810.19.A	Huber+Suhner, Inc.	10dB	0 Hz ~ 18 GHz	1W	50 Ohms	SMA In-Line Module	Active	REACH Unaffected
CATTEN-0100	Crystek Corporation	10dB	0 Hz ~ 3 GHz	1W	50 Ohms	SMA In-Line Module	Active	ROHS3 Compliant
R411810124	Radiall USA, Inc.	10dB	0 Hz ~ 6 GHz	1W	50 Ohms	SMA In-Line Module	Active	ROHS3 Compliant
R411811124	Radiall USA, Inc.	11dB	0 Hz ~ 6 GHz	1W	50 Ohms	SMA In-Line Module	Active	ROHS3 Compliant
R413V10000	Radiall USA, Inc.	10dB	0 Hz ~ 67 GHz	1W	50 Ohms	SMA In-Line Module	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Exact Match)

AT-110-WP1(40) from Hirose Electric Co Ltd is the preferred substitute, offering identical attenuation, power rating, impedance, and package configuration while extending frequency coverage to 18 GHz. Both RoHS compliance status and manufacturer continuity support direct replacement.

R413V10000 from Radiall USA Inc. provides the widest frequency coverage (0 Hz ~ 67 GHz) with matching electrical specifications, suitable for applications requiring extended bandwidth performance.

Secondary Substitutes (Functional Equivalents)

CATTEN-0100 from Crystek Corporation meets all core electrical parameters with frequency range of 0 Hz ~ 3 GHz, providing adequate coverage for the original 2.5 GHz specification with ROHS3 compliance.

R411810124 from Radiall USA Inc. extends frequency range to 6 GHz while maintaining all electrical specifications and ROHS3 compliance.

Limited Substitutes

R411811124 from Radiall USA Inc. provides 11dB attenuation instead of 10dB. This part is suitable only where the higher attenuation value is acceptable within system design tolerances.

6810.19.A from Huber+Suhner Inc. meets all electrical specifications with extended frequency coverage to 18 GHz and REACH unaffected status.

All substitute parts maintain active product status, ensuring ongoing availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can R411811124 be used as a direct replacement for AT-2310(40)?

A: R411811124 provides 11dB attenuation versus the required 10dB. Substitution is permissible only if system design tolerates the additional 1dB attenuation. All other electrical and mechanical parameters match the original specification.

Q: What is the primary advantage of AT-110-WP1(40) over the obsolete AT-2310(40)?

A: AT-110-WP1(40) maintains identical electrical specifications (10dB, 1W, 50 Ohms, SMA package) while extending frequency coverage from 2.5 GHz to 18 GHz. Active product status ensures long-term availability.

Q: Are all substitute parts SMA in-line modules?

A: Yes. All listed substitutes maintain SMA in-line module packaging, ensuring mechanical and electrical interface compatibility with the original AT-2310(40).

Q: Which substitute offers the broadest frequency coverage?

A: R413V10000 provides frequency coverage from 0 Hz to 67 GHz, the widest range among all substitutes while maintaining 10dB attenuation and 1W power rating.

Q: What compliance certifications should be verified for procurement?

A: All substitutes are RoHS or ROHS3 compliant. R411810124 carries REACH Affected status. 6810.19.A is REACH Unaffected. Verify compliance requirements against your specific application and regional regulations.

Q: Is frequency range extension a concern when substituting the AT-2310(40)?

A: No. Extended frequency range (such as 18 GHz or 67 GHz) does not compromise performance at the original 2.5 GHz operating point. The attenuator will function correctly across the original frequency band while providing additional capability at higher frequencies.

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