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Product Detailed Parameters
- Description：RF DIODE STANDARD 75V
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Diode Type：Standard - Single
- Voltage - Peak Reverse (Max)：75V
- Current - Max：-
- Capacitance @ Vr, F：5pF @ 0V, 1MHz
- Resistance @ If, F：-
- Power Dissipation (Max)：-
- Operating Temperature：-65°C ~ 150°C
- Package / Case：SQ-MELF
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The UM9989SM is a silicon PIN diode manufactured by Microchip Technology, designed for demanding telecommunications applications. It features ultra-low noise characteristics and hermetic sealing in a MELF package. Key electrical parameters include a peak reverse voltage of 75V and a capacitance of 5pF at 0V bias measured at 1MHz. The device operates within a temperature range of -65°C to 150°C.
Feature Summary
- Ultra-low-noise performance suitable for high-sensitivity RF circuits
- Hermetically sealed construction ensuring long-term reliability
- Silicon PIN diode technology optimized for telecom requirements
Applications
- Telecommunications systems requiring low-noise switching
- RF signal processing circuits
- High-reliability electronic assemblies
Procurement Notes
Verify the specific ordering suffix when purchasing. Distributors may list variants such as UM9989SM/TR or UMX9989-GM2. Confirm that the received component matches the exact part number required for your design, as suffixes can indicate differences in packaging or minor specifications. Cross-reference with official datasheets to ensure compatibility with your system's RF and thermal requirements.
Selection Notes
Select this component for applications prioritizing low noise and hermetic sealing over standard plastic packages. Consider the 75V peak reverse voltage limit and 5pF capacitance for RF matching networks. Ensure the operating environment stays within the -65°C to 150°C range. Evaluate if the hermetic MELF package is necessary for your reliability standards compared to non-hermetic alternatives.
Part Context
This part belongs to Microchip's discrete semiconductor portfolio, specifically within the PIN diodes category. It is engineered for robust performance in harsh environments where hermeticity is critical. The product line supports various telecom and industrial applications requiring stable RF characteristics.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs before considering alternative components.
