BB149A,135

Overview

The BB149A,135 is a UHF variable capacitance diode manufactured by NXP Semiconductors. It is fabricated using planar technology and encapsulated in the SOD323 small plastic surface-mount device package. The component features excellent linearity and high matching precision of 1%. Key electrical specifications include a reverse voltage (Vr) of 30 V, a capacitance at 28 V (C28) of 2.1 pF, and a tuning ratio of 9. It operates within a temperature range of -55°C to +150°C.

Feature Summary

• Excellent linearity for signal integrity
• High matching precision achieved through direct assembly
• Compact SOD323 surface-mount package

Applications

• Electronic tuning in UHF television tuners
• Voltage-controlled oscillators (VCO)

Procurement Notes

Verify the specific ordering code BB149A,135 against current NXP documentation to confirm availability status. Check for any product change notifications or lifecycle updates that may affect long-term supply. Ensure the SOD323 package type matches the design requirements for the target application.

Selection Notes

Select this component when designing circuits requiring precise capacitance variation in the UHF band. The low series resistance and high matching accuracy make it suitable for applications demanding consistent performance across multiple units. Consider the thermal operating range and package size constraints during integration.

Part Context

This part belongs to the BB1xx series of UHF varactor diodes from NXP. It shares functional similarities with the BB149 and BB159 but includes specific matching characteristics denoted by the 'A' suffix. The ',135' suffix indicates tape-and-reel packaging for automated assembly processes.

Replacement Considerations

The BB159 is an unmatched variant with identical electrical specifications. For matched applications, verify compatibility with other BB1xx series parts such as the BB146 or BB215, ensuring package and parameter alignment.