HV-AT(7)-PJ RF Attenuator 7dB Equivalent & Substitute Parts

Part Overview

The HV-AT(7)-PJ is a 7dB RF attenuator manufactured by Hirose Electric Co Ltd, designed for in-line attenuation applications across a broad frequency range of 0 Hz to 67 GHz. This component operates at 50 Ohms impedance with 1W power handling capability in a 1.85mm connector format. The part is currently in Last Time Buy status, indicating discontinued production. Identifying equivalent substitute parts is necessary to ensure continued availability and support for existing designs and maintenance requirements.

Substiute Parts

HV-AT(7)-PJ

Hirose Electric Co LtdIn Stock: 939HV-AT(7)-PJ Datasheet

Current PartRFQ

PE7403-7

PasternackIn Stock: 931PE7403-7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for RF attenuators is determined by matching the following critical electrical and mechanical parameters:

• Attenuation value (7dB)
• Impedance (50 Ohms)
• Power handling capability (1W minimum)
• Frequency range coverage (minimum 0 Hz ~ 65 GHz)
• Connector format compatibility (1.85mm module)
• RoHS compliance status

The PE7403-7 from Pasternack meets these substitution criteria. While the frequency range extends to 65 GHz rather than 67 GHz, this represents a minor specification difference within acceptable engineering tolerances for most applications. Both parts maintain identical attenuation, impedance, and power ratings.

Parameter Comparison

Engineering Selection Recommendations

The PE7403-7 serves as a direct functional substitute for the HV-AT(7)-PJ. Both components are RoHS compliant, meeting current environmental and regulatory requirements. The PE7403-7 maintains Active product status, ensuring ongoing availability and supply chain continuity compared to the Last Time Buy status of the original part.

The 2 GHz difference in maximum frequency specification (67 GHz vs. 65 GHz) does not affect substitution validity for applications operating within the 0 Hz to 65 GHz range. For applications requiring operation above 65 GHz, the original HV-AT(7)-PJ specification must be maintained.

Frequently Asked Questions (FAQ)

Q: Can the PE7403-7 be used as a direct replacement for the HV-AT(7)-PJ?

A: Yes, the PE7403-7 is functionally equivalent for applications operating within 0 Hz to 65 GHz. Both parts provide identical 7dB attenuation, 50 Ohm impedance, and 1W power handling in compatible module formats.

Q: What is the significance of the frequency range difference?

A: The HV-AT(7)-PJ operates to 67 GHz while the PE7403-7 operates to 65 GHz. This 2 GHz difference is relevant only for applications requiring operation above 65 GHz. For standard RF applications below 65 GHz, this specification variance does not impact performance.

Q: Are both parts RoHS compliant?

A: Yes. The HV-AT(7)-PJ is RoHS Compliant, and the PE7403-7 is ROHS3 Compliant, both meeting current environmental standards.

Q: Why is the HV-AT(7)-PJ marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production. The PE7403-7, with Active status, provides continued supply availability for equivalent functionality.

Q: Are there connector compatibility concerns?

A: Both parts use 1.85mm module connector formats. Mechanical and electrical compatibility is maintained for standard in-line attenuation applications.