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Product Detailed Parameters
- Description：DIODE UHF VAR CAP 32V SOD523
- Series：-
- Mfr：NXP USA Inc.
- Package：Tape & Reel (TR)
- Capacitance @ Vr, F：2.25pF @ 28V, 1MHz
- Capacitance Ratio：10
- Capacitance Ratio Condition：C1/C28
- Voltage - Peak Reverse (Max)：32 V
- Diode Type：Single
- Q @ Vr, F：-
- Operating Temperature：-55°C ~ 125°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SC-79, SOD-523
- Supplier Device Package：SOD-523
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Overview
The BB179B,315 is a UHF variable capacitance diode fabricated using planar technology and encapsulated in the SOD523 (SC-79) ultra-small surface-mount plastic package. This component provides excellent matching performance achieved through gliding matching and a Direct Matching Assembly (DMA) procedure. The device is designed for applications requiring precise tuning capabilities within UHF frequency ranges. It is currently listed as no longer manufactured, with specifications available for historical reference only.
Feature Summary
- Planar technology fabrication for consistent performance
- Ultra-small SMD plastic package for space-constrained designs
- Excellent matching performance via Direct Matching Assembly
Applications
- UHF circuit tuning
- Variable capacitance applications in RF systems
Procurement Notes
This component is discontinued and no longer manufactured by NXP Semiconductors. Specifications are provided for historical reference only. Verification of current availability should be conducted through authorized distributors or secondary market channels, as standard supply chains do not support new orders. Designers should consider obsolescence risks when referencing this part number for new production.
Selection Notes
Selection of this component requires consideration of its discontinued status. Engineers must evaluate long-term supply stability and potential need for redesign if future production volumes are anticipated. The SOD523 package dimensions and electrical characteristics should be compared against alternative active components to ensure compatibility with existing board layouts and circuit requirements.
Part Context
The BB179B belongs to NXP's portfolio of UHF variable capacitance diodes. These devices are typically used in radio frequency circuits where voltage-controlled capacitance is required for tuning oscillators or filters. The specific variant BB179B,315 indicates a particular tape reel orientation or packaging configuration defined by the 12NC ending.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Due to the discontinued status, engineers should consult NXP technical support or authorized distributors for recommended alternatives that match the SOD523 package and UHF variable capacitance specifications.
