PE7389-3

Overview

The Pasternack PE7389-3 is a fixed RF attenuator designed for in-line applications within coaxial systems. It provides a precise attenuation value of 3 dB across a frequency range extending from 0 Hz to 3 GHz. The component features Type N connectors, with a male interface on one side and a female interface on the other, ensuring compatibility with standard coaxial infrastructure. It is rated for a maximum power handling capacity of 50 Watts at the specified attenuation level. The unit maintains a characteristic impedance of 50 Ohms and exhibits a Voltage Standing Wave Ratio (VSWR) of 1.15:1. Constructed with a black anodized aluminum heatsink body, it supports operation within a temperature range of -55°C to +125°C.

Feature Summary

• Fixed 3 dB attenuation performance suitable for signal level reduction
• Type N male-to-female connector configuration for direct integration
• Black anodized aluminum heatsink body for thermal management
• Rated for 50 Watts power handling up to 3 GHz frequency

Applications

• RF signal path attenuation in communication systems
• Test and measurement equipment signal conditioning
• Antenna system impedance matching and protection

Procurement Notes

Verify the specific part number PE7389-3 against official Pasternack documentation to confirm the 3 dB attenuation value and 50 Watt rating. Ensure that the Type N male-to-female connector orientation matches the system requirements. Check RoHS compliance status if environmental regulations apply to the deployment environment. Confirm operating temperature limits align with the intended application conditions.

Selection Notes

Select this component when a fixed 3 dB reduction is required in a 50 Ohm system operating below 3 GHz. The 50 Watt power rating makes it suitable for moderate power levels. The Type N interface ensures broad compatibility with existing coaxial hardware. Consider the physical size and mounting requirements associated with the heatsink body design during system integration planning.

Part Context

This model belongs to the Pasternack PE7389 series of fixed attenuators. The series offers various attenuation values, including 3, 6, 10, 20, and 40 dB options, all sharing similar mechanical and electrical characteristics. These components are designed as inline modules, providing reliable signal attenuation without active power sources. The series utilizes robust metal construction to ensure durability in demanding RF environments.

Replacement Considerations

Compatible substitutes include other 3 dB fixed attenuators with Type N connectors and similar power ratings. Verify that alternative parts meet the 3 GHz frequency limit and 50 Ohm impedance requirement. Ensure the replacement maintains comparable VSWR specifications to preserve signal integrity. Mechanical dimensions should be checked to fit existing mounting constraints.