RF Attenuator AT-100-(0)(40) Equivalent & Substitute Parts

Part Overview

The AT-100-(0)(40) is an RF attenuator manufactured by Hirose Electric Co Ltd, designed for 0 dB attenuation across 0 Hz to 18 GHz frequency range with 50 Ohm impedance and 1W power handling capability in an SMA in-line module configuration. This part is currently in Last Time Buy status, making identification of equivalent and substitute components essential for ongoing procurement and system design continuity.

Substiute Parts

AT-100-(0)(40)

Hirose Electric Co LtdIn Stock: 971AT-100-(0)(40) Datasheet

Current PartRFQ

AT-100-(0)-WP1(40)

Hirose Electric Co LtdIn Stock: 1050AT-100-(0)-WP1(40) Datasheet

Parametric EquivalentRFQ

R411800124

Radiall USA, Inc.In Stock: 1208R411800124 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for RF attenuators is determined by matching the following critical parameters: attenuation value (0 dB), impedance (50 Ohms), power rating (1W), package configuration (SMA in-line module), and frequency range coverage. Parts are grouped as parametric equivalents when all electrical specifications and mechanical form factors align with the original component.

The AT-100-(0)(40) has two identified substitute options that maintain the core electrical and mechanical specifications required for direct replacement in RF signal path applications.

Parameter Comparison

Engineering Selection Recommendations

AT-100-(0)-WP1(40) is the primary parametric equivalent, manufactured by the same supplier (Hirose Electric Co Ltd) with identical electrical specifications and package configuration. This part maintains full frequency range coverage (0 Hz ~ 18 GHz) and carries Active product status with higher inventory availability (1024 Pcs), making it the preferred direct replacement for the AT-100-(0)(40).

R411800124 (Radiall USA, Inc.) is a secondary substitute option that matches attenuation value, impedance, power rating, and package type. However, this part operates within a reduced frequency range (0 Hz ~ 6 GHz) compared to the original specification. Selection of this substitute is appropriate only for applications where the operating frequency does not exceed 6 GHz. This part also carries Active product status with strong inventory availability (1119 Pcs).

Both substitute parts maintain RoHS compliance and equivalent moisture sensitivity ratings, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can AT-100-(0)-WP1(40) be used as a direct replacement for AT-100-(0)(40)?

A: Yes. Both parts share identical attenuation value (0 dB), frequency range (0 Hz ~ 18 GHz), impedance (50 Ohms), power rating (1W), and SMA in-line module package configuration. The AT-100-(0)-WP1(40) is manufactured by the same supplier and is the primary equivalent option.

Q: What is the key limitation of the R411800124 substitute?

A: The R411800124 operates within a frequency range of 0 Hz ~ 6 GHz, which is narrower than the original AT-100-(0)(40) specification of 0 Hz ~ 18 GHz. This part is suitable only for applications operating at or below 6 GHz.

Q: Are all substitute parts RoHS compliant?

A: Yes. Both AT-100-(0)-WP1(40) and R411800124 are RoHS compliant, matching the compliance status of the original AT-100-(0)(40).

Q: Do the substitute parts have the same power handling capability?

A: Yes. All three parts (original and both substitutes) are rated for 1W power handling with 50 Ohm impedance.

Q: Why is the original AT-100-(0)(40) marked as Last Time Buy?

A: Last Time Buy status indicates that the manufacturer is discontinuing this part number. The identified substitutes, particularly AT-100-(0)-WP1(40), provide continuity for ongoing procurement and system design requirements.