R414402000 RF Attenuator: Equivalent & Substitute Parts

Part Overview

The R414402000 is an RF attenuator manufactured by Radiall USA, Inc., designed for in-line attenuation applications in RF and microwave systems. This BNC-connectorized module provides 2dB attenuation across a frequency range of 0 Hz to 8 GHz with 50-ohm impedance and 2-watt power handling capability. The part is currently in active production status with 925 units available in inventory. Substitute parts are identified when equivalent electrical performance is required but the primary part is unavailable, or when system design parameters permit operation within a reduced frequency range or alternative impedance specification.

Substiute Parts

R414402000

Radiall USA, Inc.In Stock: 1025R414402000 Datasheet

Current PartRFQ

PE7437-2

PasternackIn Stock: 861PE7437-2 Datasheet

Parametric EquivalentRFQ

PE7438-2

PasternackIn Stock: 906PE7438-2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the R414402000 is determined by matching the following critical parameters: attenuation value (2dB), power rating (2W), package type (BNC In-Line Module), and impedance (50 Ohms). The frequency range represents the operational bandwidth; substitutes with reduced frequency coverage remain functionally equivalent when system requirements do not exceed the substitute's specified upper frequency limit.

The identified substitute parts are grouped as follows:

Partial Frequency Range Substitutes (50-Ohm Impedance): Parts meeting attenuation, power, package, and impedance specifications but with frequency range limited to 0 Hz ~ 4 GHz.

Impedance Mismatch Substitutes: Parts meeting attenuation, power, package, and frequency specifications but with 75-ohm impedance instead of 50-ohm impedance. These parts are not electrically interchangeable in 50-ohm systems without impedance matching considerations.

Parameter Comparison

Engineering Selection Recommendations

PE7437-2 (Pasternack, 50-Ohm, 4 GHz): This part is electrically compatible with the R414402000 for applications operating at frequencies up to 4 GHz. Both parts share identical attenuation (2dB), power rating (2W), impedance (50 Ohms), and package configuration (BNC In-Line Module). The PE7437-2 is RoHS Compliant and REACH Unaffected, with active product status. Selection of this substitute is appropriate when system frequency requirements do not exceed 4 GHz.

PE7438-2 (Pasternack, 75-Ohm, 4 GHz): This part differs from the R414402000 in impedance specification (75 Ohms versus 50 Ohms) and frequency range (4 GHz versus 8 GHz). The impedance mismatch introduces reflection losses and potential signal integrity issues in 50-ohm systems. This part is not recommended as a direct substitute for the R414402000 in standard 50-ohm RF systems.

Frequently Asked Questions (FAQ)

Q: Can PE7437-2 replace R414402000 in all applications?

A: PE7437-2 is a suitable substitute when system operating frequency does not exceed 4 GHz. Both parts provide identical 2dB attenuation, 2W power handling, 50-ohm impedance, and BNC in-line package configuration. Applications requiring operation above 4 GHz require the R414402000 or equivalent 8 GHz-rated attenuators.

Q: Why is PE7438-2 listed as a substitute if it has 75-ohm impedance?

A: PE7438-2 is identified in the provided substitute list. However, the 75-ohm impedance specification creates a mismatch with standard 50-ohm RF systems. Direct substitution without impedance matching network implementation is not recommended for 50-ohm applications.

Q: What is the significance of the BNC In-Line Module package type?

A: The BNC In-Line Module package type defines the mechanical interface and connector configuration. All listed parts share this package specification, ensuring physical compatibility in applications designed for BNC-connectorized in-line attenuators.

Q: Are there compliance differences between the main part and substitutes?

A: PE7437-2 and PE7438-2 are both RoHS Compliant and REACH Unaffected. The R414402000 does not specify RoHS or REACH status in the provided data. All three parts are classified under ECCN EAR99.

Q: How does frequency range affect substitution decisions?

A: Frequency range defines the upper operational limit of the attenuator. The R414402000 operates to 8 GHz, while PE7437-2 and PE7438-2 operate to 4 GHz. Substitution with lower-frequency parts is valid only when system design specifications confirm operation within the substitute's frequency range.