AT-102-WP1(40) RF Attenuator 2dB 50 Ohm SMA Equivalent & Substitute Parts

Part Overview

The AT-102-WP1(40) is an RF attenuator manufactured by Hirose Electric Co Ltd, designed for inline attenuation applications across a broad frequency spectrum. This component provides 2dB attenuation with 50 Ohm impedance matching and 1W power handling capability in an SMA connector configuration. The part is currently in active production status and RoHS compliant. Substitute parts may be required due to inventory constraints, regional availability, or procurement lead time considerations while maintaining equivalent electrical and mechanical performance.

Key Parameters

Parameter	Value
Attenuation Value	2dB
Frequency Range	0 Hz ~ 18 GHz
Power Rating	1W
Impedance	50 Ohms
Package / Case	SMA In-Line Module
RoHS Status	RoHS Compliant
Product Status	Active

Substitute Part Grouping Explanation

The CATTEN-02R0 from Crystek Corporation qualifies as a parametric equivalent based on the following matching criteria:

Attenuation Value: 2dB (identical)
Power Rating: 1W (identical)
Impedance: 50 Ohms (identical)
Package / Case: SMA In-Line Module (identical)
RoHS Compliance: Both parts meet RoHS standards

The primary distinction is the frequency range specification. The AT-102-WP1(40) operates across 0 Hz ~ 18 GHz, while the CATTEN-02R0 operates across 0 Hz ~ 3 GHz. Substitution is valid only for applications operating within the 0 Hz ~ 3 GHz frequency band.

Parameter Comparison

Parameter	AT-102-WP1(40) (Hirose)	CATTEN-02R0 (Crystek)	Match Status
Attenuation Value	2dB	2dB	Identical
Frequency Range	0 Hz ~ 18 GHz	0 Hz ~ 3 GHz	Partial (Crystek limited to 3 GHz)
Power (Watts)	1W	1W	Identical
Impedance	50 Ohms	50 Ohms	Identical
Package / Case	SMA In-Line Module	SMA In-Line Module	Identical
RoHS Status	RoHS Compliant	ROHS3 Compliant	Both Compliant
Product Status	Active	Active	Both Active

Engineering Selection Recommendations

Both the AT-102-WP1(40) and CATTEN-02R0 are active production components with current RoHS compliance certifications. Selection between these parts depends on application frequency requirements:

Use AT-102-WP1(40) for applications requiring operation above 3 GHz up to 18 GHz.
Use CATTEN-02R0 for applications operating exclusively within the 0 Hz ~ 3 GHz frequency band where inventory or lead time advantages exist.

Both parts share identical attenuation, power handling, impedance, and mechanical package specifications, ensuring functional interchangeability within their respective frequency operating ranges.

Frequently Asked Questions (FAQ)

Q: Can CATTEN-02R0 be used as a direct replacement for AT-102-WP1(40) in all applications?

A: No. The CATTEN-02R0 is frequency-limited to 3 GHz maximum. It is a valid substitute only for applications operating at or below 3 GHz. Applications requiring operation above 3 GHz must use the AT-102-WP1(40).

Q: Are the SMA connectors on both parts mechanically identical?

A: Yes. Both parts use SMA In-Line Module packaging, ensuring mechanical compatibility in connector interfaces.

Q: Do both parts meet current RoHS requirements?

A: Yes. The AT-102-WP1(40) is RoHS Compliant, and the CATTEN-02R0 is ROHS3 Compliant. Both meet current regulatory standards.

Q: What is the power handling difference between these parts?

A: Both parts are rated for 1W power handling. There is no difference in power capability.

Q: Are there any impedance mismatches between these parts?

A: No. Both parts are specified at 50 Ohms impedance, ensuring matched performance in 50 Ohm systems.

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