SA18H-11

Attenuators Overview

The SA18H-11 is a fixed attenuator manufactured by Fairview Microwave, designed for RF applications up to 18 GHz. It provides an attenuation value of 11 dB with a nominal impedance of 50 Ohms. The device features SMA male (plug) to SMA female (jack) connectors and is rated for a maximum power handling of 2 Watts. It exhibits a Voltage Standing Wave Ratio (VSWR) of 1.35:1. The unit is constructed with a passivated stainless steel body and operates within a temperature range of -65°C to +125°C.

Attenuators Feature Summary

• Fixed 11 dB attenuation performance across a DC to 18 GHz frequency range
• SMA connector interface providing male plug to female jack configuration
• Passivated stainless steel housing for durability and environmental resistance

Attenuators Applications

• RF signal level reduction in microwave test and measurement setups
• Impedance matching and signal conditioning in wireless communication systems
• Protection of sensitive receiver components from high-power signals

Attenuators Procurement Notes

Verify the specific datasheet version for the SA18H-11 to confirm current manufacturing status and compliance certifications. Ensure that the SMA connector gender and mating requirements align with the system design. Confirm thermal management capabilities are sufficient for the intended 2 Watt power rating under operational conditions. Cross-reference the VSWR specification against application tolerance limits.

Attenuators Selection Notes

Select the SA18H-11 when a precise 11 dB attenuation is required at frequencies extending to 18 GHz. This model is suitable for systems utilizing SMA interfaces and requiring a robust stainless steel construction. Consider the 2 Watt power limit and 1.35 VSWR characteristics to ensure compatibility with source and load impedances. Evaluate the operating temperature range against the environmental constraints of the deployment site.

Attenuators Part Context

The SA18H-11 belongs to the Fairview Microwave series of connectorized fixed attenuators. These components are engineered for high-frequency stability and reliable signal attenuation. The product line typically includes various attenuation values and connector types, all sharing common design principles such as low VSWR and durable materials. This specific part represents a standard solution for mid-range attenuation needs in RF circuits.

Attenuators Replacement Considerations

Equivalent parts include the SA18H-10 and SA18H-12 from the same manufacturer, offering adjacent attenuation values. Other manufacturers may provide compatible SMA fixed attenuators with similar 11 dB specifications and 18 GHz bandwidths. Verify connector polarity, power ratings, and physical dimensions before substitution.