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Product Detailed Parameters
- Description：DIODE VHF VAR CAP 32V SOD523
- Series：-
- Mfr：NXP USA Inc.
- Package：Tape & Reel (TR)
- Capacitance @ Vr, F：2.754pF @ 28V, 1MHz
- Capacitance Ratio：15
- 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 BB178,135 is a single varactor diode manufactured by NXP Semiconductors. It is housed in an SC-79-2 surface-mount package and operates within a temperature range of -55°C to +125°C. Key electrical specifications include a maximum reverse voltage (Vr) of 32 V and a capacitance of 34.65 pF. The device features a minimum tuning ratio of 13.5, tested under conditions of 1 V to 28 V. This component is classified under Diodes & Rectifiers and is designed for RF applications requiring variable capacitance control.
Feature Summary
- Provides variable capacitance functionality for RF circuit tuning
- Designed for surface-mount technology integration
- Capable of operation across extended industrial temperature ranges
Applications
- RF tuning circuits
- Voltage-controlled oscillators
- Frequency synthesizers
Procurement Notes
Verify the current lifecycle status before design finalization, as this component may be discontinued or subject to supply constraints. Confirm that the SC-79-2 package dimensions align with the target PCB layout. Ensure that the 32 V reverse voltage rating meets the specific circuit requirements. Check for RoHS compliance documentation if required by the end product regulations.
Selection Notes
Select this component when a single varactor diode with a 32 V reverse voltage rating is required. The SC-79-2 package is suitable for space-constrained surface-mount designs. Consider the 34.65 pF capacitance value and 13.5 tuning ratio for matching specific frequency ranges. Verify thermal performance within the -55°C to +125°C operating range for the intended environment.
Part Context
The BB178,135 belongs to the BB178 series of varactor diodes from NXP Semiconductors. The suffix ,135 indicates the specific tape-and-reel packaging configuration. This series is part of NXP's broader portfolio of discrete semiconductor devices used in radio frequency and communication systems.
Replacement Considerations
Consult official NXP documentation for qualified replacement parts. Verify pinout compatibility and electrical parameter equivalence before substitution.
