AT-306(40) RF Attenuator 6dB 50 Ohm SMA Equivalent & Substitute Parts

Part Overview

The AT-306(40) is a 6dB RF attenuator manufactured by Hirose Electric Co Ltd, designed for in-line SMA applications across 0 Hz to 18 GHz frequency range with 1W power handling and 50 Ohm impedance. This part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure continued availability and support for designs utilizing this component.

Key Parameters

Parameter	Value
Attenuation Value	6dB
Frequency Range	0 Hz ~ 18 GHz
Power Rating	1W
Impedance	50 Ohms
Package / Case	SMA In-Line Module
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the AT-306(40) is determined by matching the following critical parameters: 6dB attenuation value, 50 Ohm impedance, 1W power rating, and SMA In-Line Module package. Frequency range capability may vary among substitutes; parts with equal or greater frequency coverage are considered parametric equivalents. All listed substitutes meet the core electrical and mechanical specifications required for direct replacement in standard applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Attenuation	Frequency Range	Power (W)	Impedance	Package	Product Status	RoHS Status
AT-306(40)	Hirose Electric Co Ltd	6dB	0 Hz ~ 18 GHz	1W	50 Ohms	SMA In-Line Module	Last Time Buy	RoHS Compliant
AT-106-WP1(40)	Hirose Electric Co Ltd	6dB	0 Hz ~ 18 GHz	1W	50 Ohms	SMA In-Line Module	Active	RoHS Compliant
AT-107-WP1(40)	Hirose Electric Co Ltd	6dB	0 Hz ~ 18 GHz	1W	50 Ohms	SMA In-Line Module	Active	RoHS Compliant
6806.19.A	Huber+Suhner, Inc.	6dB	0 Hz ~ 18 GHz	1W	50 Ohms	SMA In-Line Module	Active	REACH Unaffected
CATTEN-06R0	Crystek Corporation	6dB	0 Hz ~ 3 GHz	1W	50 Ohms	SMA In-Line Module	Active	ROHS3 Compliant
R411806124	Radiall USA, Inc.	6dB	0 Hz ~ 6 GHz	1W	50 Ohms	SMA In-Line Module	Active	ROHS3 Compliant
R413V06000	Radiall USA, Inc.	6dB	0 Hz ~ 67 GHz	1W	50 Ohms	SMA In-Line Module	Active	ROHS3 Compliant

Engineering Selection Recommendations

For applications requiring full 18 GHz frequency coverage with active product status, AT-106-WP1(40) and AT-107-WP1(40) from Hirose Electric Co Ltd provide direct equivalence while maintaining RoHS compliance. The 6806.19.A from Huber+Suhner offers equivalent frequency performance with active status.

For applications operating below 6 GHz, R411806124 from Radiall USA, Inc. provides a suitable alternative with ROHS3 compliance and active product status. The CATTEN-06R0 from Crystek Corporation is suitable for applications limited to 3 GHz operation.

For broadband applications requiring frequency coverage beyond 18 GHz, R413V06000 from Radiall USA, Inc. extends capability to 67 GHz while maintaining all core electrical parameters and active product status.

Frequently Asked Questions (FAQ)

Q: Can CATTEN-06R0 replace AT-306(40) in all applications? A: CATTEN-06R0 is suitable only for applications operating at frequencies up to 3 GHz. The AT-306(40) supports 0 Hz to 18 GHz; therefore, CATTEN-06R0 cannot replace it in designs requiring higher frequency operation.

Q: What is the difference between AT-106-WP1(40) and AT-107-WP1(40)? A: Both parts are manufactured by Hirose Electric Co Ltd and share identical electrical and mechanical specifications: 6dB attenuation, 0 Hz to 18 GHz frequency range, 1W power rating, 50 Ohm impedance, and SMA In-Line Module package. Both are active products suitable for direct replacement of AT-306(40).

Q: Is R413V06000 compatible with AT-306(40) designs? A: R413V06000 meets all core electrical parameters (6dB attenuation, 1W power, 50 Ohm impedance, SMA In-Line Module package) and extends frequency coverage to 67 GHz. It is compatible with AT-306(40) applications and suitable for designs requiring extended frequency range.

Q: What compliance certifications should I consider when selecting a substitute? A: The AT-306(40) is RoHS Compliant. Substitute parts AT-106-WP1(40), AT-107-WP1(40), and 6806.19.A maintain RoHS compliance. Alternative parts from Radiall USA, Inc. and Crystek Corporation carry ROHS3 compliance. Selection should align with your design's regulatory requirements.

Q: Are there packaging differences among the substitute parts? A: All listed substitute parts use SMA In-Line Module packaging. The AT-306(40) and 6806.19.A are supplied in Bulk packaging, while R411806124 is supplied in Box packaging. CATTEN-06R0 and R413V06000 are supplied in Bulk packaging. Packaging format does not affect electrical or mechanical compatibility.

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