MMBD352LT1G

RF Diode Overview

The MMBD352LT1G is a dual hot carrier mixer diode manufactured by onsemi, designed primarily for UHF mixer applications. It features very low capacitance of less than 1.0 pF at zero volts and a typical forward voltage of 0.5 V at an intermediate frequency of 10 mA. The device supports detector and ultra-fast switching circuits within a compact SOT-23-3 package. It operates with a peak reverse voltage of 7 V and a maximum forward current of 10 mA. The component functions reliably across a temperature range from -55 C to +150 C, with a reverse current of 10 uA.

RF Diode Feature Summary

• Dual hot carrier configuration optimized for UHF mixer and detector applications
• Ultra-low junction capacitance ensures high-frequency signal integrity
• Low forward voltage drop facilitates efficient signal detection
• Robust thermal performance suitable for demanding operating environments

RF Diode Applications

• UHF mixer circuits in radio frequency systems
• High-speed signal detection modules
• Ultra-fast switching applications requiring minimal capacitance

RF Diode Procurement Notes

Verify the specific datasheet revision when sourcing, as historical documentation may vary between manufacturers like Motorola and onsemi. Confirm the SOT-23-3 package marking matches the intended design requirements. Ensure the supplier provides traceability for the Pb-free packaging status. Cross-reference the part number suffix to confirm it aligns with the current onsemi manufacturing standards before finalizing procurement orders.

RF Diode Selection Notes

Select this component when low capacitance is critical for UHF frequency operation. The dual common anode configuration simplifies circuit layout compared to discrete single diodes. Consider the 7 V peak reverse voltage limit when designing for higher voltage transients. The wide operating temperature range makes it suitable for automotive or industrial environments where thermal stability is required for consistent mixing performance.

RF Diode Part Context

This component belongs to the MMBD352L series of hot carrier diodes. It shares functional similarities with the MMBD352LT1 but carries the 'G' suffix indicating lead-free compliance per onsemi standards. The device represents a transition from older Motorola specifications to modern onsemi manufacturing processes while maintaining the core electrical characteristics required for legacy RF designs.

RF Diode Replacement Considerations

Direct substitutes include the MMBD352LT1 from various manufacturers such as Leshan Radio Company or Shenzhen Luguang Electronics. Verify pinout compatibility and capacitance values below 1.0 pF when replacing. Ensure the replacement maintains the same SOT-23-3 footprint and thermal characteristics to avoid redesigning the PCB layout.