MMDB35-0402

RF Diode Overview

The MMDB35-0402 is a silicon step recovery diode from the MMDx & SMMDx Series, designed for millimeter wave multiplication and picosecond pulse forming. It features a fully passivated true mesa construction with beam lead termination in an 0402 ceramic package. Key electrical specifications include a minimum breakdown voltage of 16 V, junction capacitance ranging from 0.18 pF to 0.22 pF, and a typical transition time of 35 ps (maximum 45 ps). The device supports a forward current of 50 mA and operates within a temperature range of -65°C to +175°C.

RF Diode Feature Summary

• Beam lead design providing industry-fast transition times for high-frequency applications
• Fully passivated true mesa construction ensuring sharp transitions and improved stability
• Available screening per MIL-PRF-19500 and MIL-PRF-38534 standards

RF Diode Applications

• Millimeter wave frequency multiplication
• Picosecond pulse forming circuits
• Gaussian pulse generation

RF Diode Procurement Notes

Verify the specific ordering suffix matches the required package variant, as the datasheet lists both 0402 and 0805-2 options for the MMDB35 model. Confirm that any military screening requirements align with the available MIL-PRF-19500 or MIL-PRF-38534 options before finalizing procurement.

RF Diode Selection Notes

Select this component when a low junction capacitance and fast transition time are critical for mmWave signal processing. Ensure the drive conditions meet the test parameters (IF = 3 mA, VR = 7 V) to achieve the specified 35 ps transition time. Consider thermal derating if operating near the maximum junction temperature limits.

RF Diode Part Context

This part belongs to the MACOM MMDx & SMMDx series of silicon step recovery diodes. The series includes chip, beam lead, ceramic packaged, glass packaged, and plastic packaged variants. The MMDB35 specifically utilizes a beam lead configuration optimized for high-speed switching performance compared to standard packaged alternatives.

RF Diode Replacement Considerations

Direct replacements within the same series include MMDB30-B11 and MMDB45-B11, which offer different breakdown voltages and capacitance values. Verify that the alternative part's transition time and capacitance specifications meet the circuit requirements.