4391-93

Attenuators Overview

The Pomona Electronics Model 4391-93 is a BNC in-line RF attenuator module designed for coaxial lines. It provides a nominal resistance of 93 Ohms with a tolerance of ±1%. The device supports a frequency range from DC to 500 MHz and handles a maximum power rating of 2 Watts at 25°C. It features a non-inductive film resistor and operates within a maximum temperature of +102°C.

Attenuators Feature Summary

• Provides series resistance for coaxial transmission lines
• Utilizes a non-inductive film resistor for signal integrity
• Features tarnish-resistant plating on body and fittings

Attenuators Applications

• Impedance matching in RF test setups
• Signal level reduction in measurement circuits
• Integration into BNC-based instrument input paths

Attenuators Procurement Notes

Verify the specific suffix (e.g., -93) against official Pomona documentation to confirm the exact resistance value, as the base model 4391 may denote different impedances. Ensure the operating environment remains within the specified thermal limits and that the connector gender matches the system requirements. Confirm RoHS status if required by procurement policy.

Attenuators Selection Notes

Select this component when a precise 93 Ohm attenuation is required for BNC interfaces up to 500 MHz. Consider the 2W power handling capability relative to the expected signal load. Verify compatibility with existing male/female BNC connections and ensure the physical form factor fits the intended assembly space without mechanical interference.

Attenuators Part Context

This part belongs to the Pomona 4391 series of resistor attenuators. These modules are engineered to add controlled series resistance to coaxial systems. The series typically includes variants with different resistance values, all sharing similar construction materials like brass bodies and gold-plated contacts for reliable performance.

Attenuators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should verify direct compatibility or consult manufacturer guidelines for alternative impedance values within the same product family.