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D3I1840-3 is listed in the RF Circulators And Isolators range at ChipApex. The manufacturer field lists DiTom Microwave. Its product description is 18.00 - 40.00 GHZ ISOLATOR. Review the specifications below when checking this part for your BOM.
The D3I1840-3 is a single junction coaxial RF isolator manufactured by DiTom Microwave. It operates within a frequency range of 18 GHz to 40 GHz. The device features Type-K female connectors on both ports. Key electrical specifications include an insertion loss of 2 dB, an isolation level of 9 dB, and a Voltage Standing Wave Ratio (VSWR) of 2.1. It supports an average forward power of 5 W. The unit is housed in a module package with physical dimensions of 0.5 inches by 0.5 inches by 0.7 inches. It functions reliably within an operating temperature range from -20°C to +65°C.
Verify the specific connector configuration and electrical tolerances against the official DiTom Microwave datasheet before ordering. Confirm that the Type-K interface matches the system requirements. Ensure the thermal management plan accommodates the specified operating temperature range of -20°C to +65°C. Check for any RoHS compliance documentation if required by project standards. Validate availability through authorized distributors as supply status may vary.
Select this component when a broadband isolator covering 18 to 40 GHz is required. The 5 W power handling capacity suits moderate power levels. The 2.1 VSWR indicates standard impedance matching performance. Consider the physical size constraints due to the 0.5 x 0.5 x 0.7 inch module footprint. Evaluate the 9 dB isolation figure against system noise floor requirements. Compare with other models in the D3I1840 series for potential variations in connector type or loss characteristics.
This part belongs to the D3I1840 series of RF isolators from DiTom Microwave. The series covers the 18 to 40 GHz frequency band. Variations exist within the series, such as the D4I1840-3 which shares the frequency range but differs in connector type and isolation specs. The D3I1840-3 specifically denotes the configuration with Type-K female connectors and defined electrical parameters.
The D4I1840-3 is a related model in the same series but features Type-K female connectors with different isolation and insertion loss values. Verify compatibility if substituting, as electrical performance differs significantly.
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