BB156,135

Overview

The BB156,135 is a low-voltage variable capacitance diode manufactured by NXP Semiconductors. It utilizes planar technology and is housed in a SOD323 (SC-76) plastic surface-mounted package with two leads. The device features excellent linearity and very small series resistance. Key electrical parameters include a nominal capacitance of 4.8 pF at C7.5 and a capacitance ratio of 3.3. The marking code is PF, with the bar indicating the cathode.

Feature Summary

• Excellent linearity for signal integrity
• Very small plastic SMD package
• Very low series resistance

Applications

• Voltage controlled oscillators (VCO)

Procurement Notes

Verify the specific ordering suffix to confirm the reel quantity and packaging format. Ensure the component matches the SOD323 package outline and SC-76 footprint requirements for your PCB layout. Confirm the manufacturer is NXP Semiconductors to guarantee the specified electrical characteristics and reliability standards are met.

Selection Notes

Select this component when a low-voltage varactor with high linearity is required. The SOD323 package is suitable for space-constrained designs. Consider the 4.8 pF nominal capacitance and 3.3 ratio for tuning range requirements. Verify that the voltage ratings align with the circuit's operating conditions.

Part Context

The BB156 is part of NXP's discrete semiconductor portfolio, specifically designed as a variable capacitance diode. It is commonly used in RF applications where precise tuning and low loss are critical. The SOD323 package allows for automated assembly in compact electronic devices.

Replacement Considerations

Check for direct substitutes from other manufacturers offering similar capacitance ratios and package types. Ensure any replacement maintains the same pinout and electrical specifications to avoid redesigning the circuit board.