BB179,135

Overview

The BB179,135 is a UHF variable capacitance diode manufactured by NXP Semiconductors. It is fabricated using planar technology and encapsulated in the SOD523 (SC-79) ultra-small surface-mount plastic package. The device provides excellent matching performance achieved through gliding matching and Direct Matching Assembly (DMA) procedures. Key electrical specifications include a reverse voltage of 32 V and a capacitance of 34.65 pF. It operates within a temperature range of -55 C to +125 C. The component is supplied in tape reel packaging with a factory quantity of 10,000 units.

Feature Summary

• Fabricated in planar technology for enhanced reliability
• Encapsulated in the SOD523 (SC-79) ultra-small SMD plastic package
• Achieves excellent matching performance via gliding matching and Direct Matching Assembly (DMA)
• Designed specifically for UHF applications

Applications

• Voltage Controlled Oscillators (VCOs)
• Electronic tuning in UHF tuners

Procurement Notes

Verify current availability status as the product may be discontinued or subject to supply constraints. Confirm that the SOD523 package orientation and pinout match the design requirements. Ensure compliance with RoHS directives and check for any specific handling precautions related to the small form factor during assembly.

Selection Notes

Select this component when an ultra-small footprint is required for UHF circuits. The DMA procedure ensures tight capacitance tolerance, which is critical for consistent oscillator performance. Consider the 32 V reverse voltage rating and operating temperature range to ensure compatibility with the target system environment.

Part Context

This part belongs to NXP's family of UHF variable capacitance diodes. It shares the SC-79 package with variants like the BB178,135 but differs in specific capacitance and tuning characteristics. The '135' suffix indicates the standard tape reel packaging configuration used for automated surface-mount assembly processes.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official NXP resources for cross-reference information or evaluate similar UHF varactor diodes from other manufacturers if this component is no longer manufactured.