SMS7621-081LF

RF Diode Overview

The SMS7621-081LF is a surface-mount Schottky diode manufactured by Skyworks Solutions Inc., designed for RF and microwave mixer and detector applications. It features a series pair configuration within an SC-88 package (also designated as SOT-363). The device operates with a maximum reverse voltage of 2V, a steady-state forward current of 50 mA, and a power dissipation rating of 75 mW. Electrical characteristics include a typical junction capacitance of 0.25 pF at 0 V and a forward voltage range of 260 to 320 mV at 1 mA. It supports an operating temperature range from -65°C to +150°C.

RF Diode Feature Summary

• Tight parameter distribution ensures minimized performance variability across devices.
• Available in various wiring configurations including singles, common cathode, series pairs, and dual series pairs.
• Packages are rated for Moisture Sensitivity Level 1 (MSL1) at 260°C per JEDEC J-STD-020 standards.

RF Diode Applications

• Sensitive RF and microwave detector circuits
• Sampling and mixer circuits
• High-volume wireless infrastructure
• WiFi and mobile communication systems
• Low-noise receivers in high-sensitivity ID tags

RF Diode Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required package type and pin configuration. Check for RoHS compliance status and lead-free certification before procurement. Ensure storage conditions adhere to moisture sensitivity level guidelines to prevent soldering defects during assembly.

RF Diode Selection Notes

Select this component when a low-barrier Schottky diode with tight parameter matching is required for mixer or detector stages. The series pair configuration is suitable for balanced circuit topologies. Verify that the SC-88 footprint aligns with the PCB layout constraints. Ensure the 2V reverse voltage rating meets the peak signal requirements of the target application frequency.

RF Diode Part Context

This part belongs to the Skyworks SMS7621 series of surface mount mixer and detector Schottky diodes. The series includes single, unconnected, and dual pair variants housed in packages such as SOD-882, SC-79, SOT-23, and MIS. These devices utilize advanced semiconductor technology combined with cost-effective packaging techniques for high-frequency applications up to 24 GHz.

RF Diode Replacement Considerations

Direct substitutes within the same series include SMS7621-079LF (SC-79 package) and SMS7621-040LF (SOD-882 package). Cross-package replacements require verification of mechanical footprint compatibility and pinout alignment. Ensure equivalent electrical parameters, specifically barrier voltage and junction capacitance, are maintained for circuit integrity.