RF Attenuator 20dB 50 Ohm SMA In-Line Module AT-120V

Part Overview

The AT-120V is a 20dB RF attenuator manufactured by Hirose Electric Co Ltd, designed for applications requiring signal attenuation across the 0 Hz to 18 GHz frequency range. This component operates at 50 Ohms impedance with 2W power handling capability in an SMA in-line module package format. The part is currently in Last Time Buy status, indicating limited availability. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain flexibility, and support long-term production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	AT-120V
Manufacturer	Hirose Electric Co Ltd
Attenuation Value	20dB
Frequency Range	0 Hz ~ 18 GHz
Power (Watts)	2W
Impedance	50 Ohms
Package / Case	SMA In-Line Module
Product Status	Last Time Buy
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the AT-120V are selected based on strict parametric equivalence across the following critical parameters:

Attenuation Value: 20dB (exact match required)
Impedance: 50 Ohms (exact match required)
Package / Case: SMA In-Line Module (exact match required)
Frequency Range: 0 Hz ~ 18 GHz or compatible subset
Power Handling: 2W or greater

Substitutes are grouped into two categories:

Full-Range Equivalents (0 Hz ~ 18 GHz): Parts meeting all parameters including the complete 18 GHz frequency specification.

Frequency-Limited Equivalents: Parts meeting all electrical parameters but with reduced frequency range (0 Hz ~ 12.4 GHz or 0 Hz ~ 3 GHz). These are suitable only for applications operating within their specified frequency limits.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Attenuation (dB)	Frequency Range (GHz)	Power (W)	Impedance (Ω)	Package	Product Status	RoHS Status
AT-120V	Hirose Electric Co Ltd	20	0 ~ 18	2	50	SMA In-Line Module	Last Time Buy	ROHS3 Compliant
32AS102-K20S3	Rosenberger	20	0 ~ 18	2	50	SMA In-Line Module	Active	RoHS Compliant
LCAT1001-20	L-com	20	0 ~ 3	2	50	SMA In-Line Module	Active	ROHS3 Compliant
M3933/14-04N	Cinch Connectivity Solutions Midwest Microwave	20	0 ~ 12.4	—	50	SMA In-Line Module	Active	RoHS non-compliant
M3933/14-04S	Amphenol SV Microwave	20	0 ~ 12.4	2	50	SMA In-Line Module	Active	ROHS3 Compliant
M3933/16-04N	Cinch Connectivity Solutions Midwest Microwave	20	0 ~ 18	—	50	SMA In-Line Module	Active	RoHS non-compliant
M3933/16-04S	Cinch Connectivity Solutions Midwest Microwave	20	0 ~ 18	2	50	SMA In-Line Module	Active	RoHS non-compliant
M3933/25-20N	Cinch Connectivity Solutions Midwest Microwave	20	0 ~ 2	2	50	SMA In-Line Module	Active	RoHS non-compliant
M3933/25-20S	Cinch Connectivity Solutions Midwest Microwave	20	0 ~ 2	2	50	SMA In-Line Module	Active	RoHS non-compliant

Engineering Selection Recommendations

Primary Substitute (Full-Range, Active Status): The 32AS102-K20S3 from Rosenberger provides complete parametric equivalence to the AT-120V across all electrical and mechanical specifications, including the full 0 Hz to 18 GHz frequency range and 2W power rating. This part carries Active product status and RoHS compliance, ensuring long-term availability and regulatory alignment.

Secondary Substitute (Full-Range, Military Grade): The M3933/16-04S from Cinch Connectivity Solutions Midwest Microwave meets all electrical parameters including the 18 GHz frequency specification and 2W power handling. This part is qualified to MIL-DTL-M3933 military specification. However, it carries RoHS non-compliant status, which may restrict use in applications with regulatory compliance requirements.

Frequency-Limited Substitutes: The M3933/14-04S (0 Hz ~ 12.4 GHz) and LCAT1001-20 (0 Hz ~ 3 GHz) are suitable only for applications operating within their specified frequency ranges. The M3933/14-04S provides ROHS3 compliance and 2W power handling. The LCAT1001-20 provides ROHS3 compliance and active product status with higher inventory availability.

Non-Compliant Alternatives: Parts designated as RoHS non-compliant (M3933/14-04N, M3933/16-04N, M3933/25-20N, M3933/25-20S) are available but restricted from use in applications requiring RoHS compliance certification.

Frequently Asked Questions (FAQ)

Q: Can the LCAT1001-20 replace the AT-120V in all applications?

A: The LCAT1001-20 is a parametric equivalent only for applications operating at frequencies up to 3 GHz. The AT-120V operates across 0 Hz to 18 GHz. Use LCAT1001-20 only when your application frequency range does not exceed 3 GHz.

Q: What is the difference between M3933/16-04N and M3933/16-04S?

A: Both parts share identical electrical specifications (20dB attenuation, 0 Hz ~ 18 GHz, 50 Ohms, SMA in-line module). The M3933/16-04S includes 2W power rating specification and ROHS3 compliance, while M3933/16-04N does not specify power rating and is RoHS non-compliant.

Q: Is the 32AS102-K20S3 a direct replacement for AT-120V?

A: The 32AS102-K20S3 meets all parametric requirements of the AT-120V: 20dB attenuation, 0 Hz ~ 18 GHz frequency range, 2W power handling, 50 Ohm impedance, and SMA in-line module package. It is Active status with RoHS compliance, making it suitable for direct substitution.

Q: Why do some substitutes show no power rating?

A: Parts designated M3933/16-04N and M3933/14-04N do not include power rating specifications in available documentation. Confirm power handling capability with the manufacturer before selection for applications requiring 2W or greater power dissipation.

Q: Can I use M3933/25-20N or M3933/25-20S for broadband applications?

A: No. These parts are limited to 0 Hz ~ 2 GHz frequency range. They are suitable only for low-frequency applications below 2 GHz. For broadband applications requiring the full 18 GHz range, use 32AS102-K20S3, M3933/16-04S, or M3933/16-04N.

Q: What is the significance of RoHS compliance status?

A: RoHS (Restriction of Hazardous Substances) compliance is required for products sold into European markets and many regulated industries. The AT-120V is ROHS3 compliant. Substitutes must maintain equivalent or superior compliance status for regulatory continuity. RoHS non-compliant parts restrict market access and may violate procurement specifications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message