The **PE9934-18-R** is a high-performance, precision RF/Microwave component, specifically a **Fixed Coaxial Attenuator**. It is manufactured by Pasternack Enterprises and is designed to reduce the power of a signal by a specific amount without significantly distorting its waveform. --- ### 1. Key Technical Specifications The following table outlines the primary electrical and mechanical characteristics of the PE9934-18-R: | Feature | Specification | |:---|:---| | **Attenuation Value** | 18 dB | | **Frequency Range** | DC to 18 GHz | | **Connector Type** | SMA Male to SMA Female | | **Impedance** | 50 Ohms | | **Maximum Power (CW)** | 2 Watts | | **VSWR (Max)** | 1.35:1 | | **Accuracy** | ±0.6 dB | | **Body Material** | Passivated Stainless Steel | --- ### 2. Electronic Functionality The PE9934-18-R operates based on a resistive network (typically a Pi or T-pad configuration) integrated into a coaxial housing. * **Signal Reduction:** It provides a fixed 18 dB reduction in power. In terms of linear power, an 18 dB attenuation reduces the input power by a factor of approximately **63 times**. * **Impedance Matching:** It maintains a 50-ohm characteristic impedance across its entire frequency range (up to 18 GHz), minimizing signal reflections (Return Loss). * **Heat Dissipation:** The unit is designed to handle up to 2 Watts of Continuous Wave (CW) power. The stainless steel body acts as a heat sink to dissipate the thermal energy generated by the internal resistors. --- ### 3. Common Applications Due to its high frequency range and precision, this part is used in: 1. **Test and Measurement:** Protecting sensitive spectrum analyzers or oscilloscopes from high-power signals. 2. **Signal Leveling:** Adjusting signal strengths within a complex RF circuit to ensure components operate within their linear range. 3. **Impedance Buffering:** Placed between two mismatched components to improve the overall VSWR of the system. --- ### 4. Part Number Breakdown (Pasternack Logic) | Prefix | Series | Value | RoHS Status | |:---|:---|:---|:---| | **PE** | **9934** | **-18** | **-R** | | Pasternack Enterprises | Low Power SMA Attenuator | 18 Decibels (dB) | RoHS Compliant |