HPND-4028

RF Diode Overview

The HPND-4028 is a beam lead PIN diode designed for low capacitance, low resistance, and fast switching at microwave frequencies. It operates within an operating temperature range of -65°C to +150°C and dissipates up to 250 mW at 25°C case temperature. Electrical specifications include a maximum capacitance of 0.025 pF at 1 MHz, a typical series resistance of 2.3 Ω at 10 mA forward current, and a reverse recovery time of 2.0 ns. The device features a breakdown voltage minimum of 60 V and a typical carrier lifetime of 36 ns.

RF Diode Feature Summary

• Guaranteed capacitance windows ensure uniform performance in phased array applications.
• Rugged construction with strong beams ensures high assembly yields.
• Nitride passivation and polyimide coating provide enhanced reliability.

RF Diode Applications

• Phase shifting circuits
• Microwave switches
• Phased array radar systems

RF Diode Procurement Notes

Verify the manufacturer origin, as the datasheet references Avago Technologies while the prompt specifies Broadcom Limited. Confirm the specific package type matches the Outline 83 beam lead dimensions provided. Ensure the component meets the required MIL-S-19500 lead strength standards before integration into sensitive microwave assemblies.

RF Diode Selection Notes

Select the HPND-4028 when minimal power consumption at low bias levels is critical. Choose this model over the HPND-4038 if lower capacitance (max 0.025 pF) and faster switching (2.0 ns) are required. Verify that the circuit design accommodates the beam lead bonding requirements and substrate expansion characteristics described in the handling procedures.

RF Diode Part Context

This component belongs to the HPND-40xx series of beam lead PIN diodes. It shares similar rugged construction and processing techniques with the HPND-4038 but offers distinct electrical parameters optimized for higher isolation and faster response times in series configurations.

RF Diode Replacement Considerations

The datasheet explicitly states that this document obsoletes part number 5967-6157E. No other direct substitute part numbers are listed in the provided documentation.

RF Diode FAQ

What is the maximum guaranteed capacitance for the HPND-4028?

The maximum guaranteed capacitance is 0.025 pF at 1 MHz.

How should beam lead devices be handled to avoid damage?

A vacuum pickup with a #27 tip or a sharpened wooden Q-tip dipped in isopropyl alcohol is recommended. Ultrasonic cleaning and acid solvents should not be used.

What is the typical reverse recovery time for this device?

The typical reverse recovery time is 2.0 ns.