AT-1120(40) RF Attenuator 20dB SMA Equivalent & Substitute Parts

Part Overview

The AT-1120(40) is a 20dB RF attenuator manufactured by Hirose Electric Co Ltd, designed for in-line attenuation applications across 0 Hz to 8 GHz frequency range with 50 Ohm impedance and 10W power handling capability. The part features SMA connectors in a compact in-line module package. This product carries Last Time Buy status, making identification of equivalent and substitute parts essential for procurement planning and design continuity.

Substiute Parts

AT-1120(40)

Hirose Electric Co LtdIn Stock: 839AT-1120(40) Datasheet

Current PartRFQ

5920_SMA-50-010/19-_NE

Huber+Suhner, Inc.In Stock: 8375920_SMA-50-010/19-_NE Datasheet

Parametric EquivalentRFQ

R415320000

Radiall USA, Inc.In Stock: 738R415320000 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT-1120(40) is determined by the following critical parameters:

• Attenuation Value: 20dB (exact match required)
• Impedance: 50 Ohms (exact match required)
• Power Rating: 10W (exact match required)
• Package Type: SMA In-Line Module (exact match required)
• Frequency Range: Minimum 0 Hz ~ 8 GHz (equal or extended range acceptable)

Two substitute parts meet these criteria. The Huber+Suhner 5920_SMA-50-010/19-_NE provides extended frequency coverage to 18 GHz while maintaining all other electrical specifications. The Radiall R415320000 matches the AT-1120(40) across all parameters including identical frequency range.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are qualified replacements for the AT-1120(40) based on electrical and mechanical parameter compatibility.

The Radiall R415320000 provides direct substitution with identical frequency range specification (0 Hz ~ 8 GHz) and active product status. This part is suitable for applications requiring exact performance matching to the original AT-1120(40) specification.

The Huber+Suhner 5920_SMA-50-010/19-_NE offers extended frequency coverage to 18 GHz while maintaining all other electrical parameters. This part is suitable for applications where extended frequency range provides design margin or future-proofing without performance compromise in the 0-8 GHz operating band.

Both substitute parts carry ROHS3 compliance certification, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the Huber+Suhner 5920_SMA-50-010/19-_NE be used as a direct replacement for the AT-1120(40)?

A: Yes. The extended frequency range (0 Hz ~ 18 GHz) does not prevent substitution. The part maintains identical attenuation value (20dB), impedance (50 Ohms), power rating (10W), and package type (SMA In-Line Module). Extended frequency capability is compatible with applications designed for 0-8 GHz operation.

Q: What is the difference between RoHS and ROHS3 compliance?

A: Both certifications indicate compliance with Restriction of Hazardous Substances directives. ROHS3 represents the current regulatory standard. Both the AT-1120(40) and substitute parts meet applicable environmental compliance requirements.

Q: Are the SMA connectors on all three parts mechanically identical?

A: Yes. All three parts use SMA In-Line Module packaging, ensuring mechanical compatibility in existing designs and installations.

Q: Which substitute part should be selected for new designs?

A: Selection depends on application frequency requirements. For designs operating within 0-8 GHz, either substitute part is acceptable. The Radiall R415320000 provides exact specification matching. The Huber+Suhner 5920_SMA-50-010/19-_NE provides extended frequency margin if future bandwidth expansion is anticipated.

Q: Are there inventory considerations for part selection?

A: Current inventory levels are: AT-1120(40) 740 Pcs, Huber+Suhner 5920_SMA-50-010/19-_NE 778 Pcs, Radiall R415320000 716 Pcs. All parts are available in quantity.