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Product Detailed Parameters
- Description：SI PPIN HERMETIC MELF
- Series：-
- Mfr：Microchip Technology
- Package：Tray
- Diode Type：PIN - Single
- Voltage - Peak Reverse (Max)：75V
- Current - Max：-
- Capacitance @ Vr, F：0.8pF @ 0V, 100MHz
- Resistance @ If, F：3Ohm @ 100mA, 100MHz
- Power Dissipation (Max)：1 W
- Operating Temperature：-65°C ~ 175°C
- Package / Case：SQ-MELF
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The UM9301SM/TR is a silicon PIN diode from Microchip Technology, housed in a hermetic MELF package. It operates with a maximum reverse voltage of 75V and handles up to 1W of power. The device supports fast switching speeds and provides precision-controlled attenuation up to 12 dB. Designed for RF applications, it features low power consumption and reliable performance across a wide temperature range.
Feature Summary
- Hermetic sealing ensures reliability in harsh environments
- Fast switching speed suitable for high-frequency RF circuits
- Precision-controlled attenuation capability for signal management
Applications
- RF signal switching
- Variable attenuator circuits
- Microwave communication systems
Procurement Notes
Verify the specific suffix TR indicates tape and reel packaging configuration. Confirm the hermetic MELF package type matches your assembly requirements. Ensure the 75V reverse voltage rating aligns with your circuit design constraints. Check for RoHS compliance status if required by your manufacturing standards. Validate the supplier's authorization as a Microchip Technology distributor.
Selection Notes
Select this component when hermetic sealing is critical for environmental protection. Consider the 1W power handling capacity for moderate RF power levels. Evaluate the fast switching characteristics against your system's timing requirements. Compare the 12 dB attenuation range with your signal control needs. Ensure the MELF footprint fits your PCB layout constraints.
Part Context
This part belongs to Microchip's discrete semiconductor product line, specifically within the RF diode category. It complements other PIN diodes offering similar hermetic and high-reliability features. The UM9301 series is designed for demanding aerospace and defense applications requiring robust performance.
Replacement Considerations
Check datasheets for compatible hermetic PIN diodes with similar voltage and power ratings. Verify package compatibility for direct replacement without PCB redesign. Ensure switching speed and attenuation characteristics meet or exceed original specifications.
