BBY40,235

Overview

The BBY40,235 is a variable capacitance diode fabricated using planar technology and encapsulated in the SOT-23 small plastic surface-mount package. It features matched capacitance characteristics suitable for precision tuning applications. Key electrical specifications include a maximum forward current of 20 mA, a reverse voltage rating of 30 V, and an operating temperature range extending up to 125°C. The device exhibits a nominal capacitance of 6 pF at 25 V and 1 MHz, with a capacitance ratio of 6.5.

Feature Summary

• Planar technology fabrication ensures consistent performance characteristics
• Matched capacitance design supports balanced circuit configurations
• Small SOT-23 surface-mount package facilitates automated assembly

Applications

• VHF frequency tuning circuits
• Voltage-controlled oscillator (VCO) designs
• RF phase shifters
• Frequency modulation circuits

Procurement Notes

Verify the specific ordering suffix matches the required package variant and tape-and-reel configuration. Confirm RoHS compliance status and lead-free certification requirements against project specifications. Ensure the supplier provides valid traceability documentation for the manufacturing lot code. Cross-reference the datasheet revision date to guarantee alignment with current technical parameters before finalizing procurement orders.

Selection Notes

Select this component when a low-profile surface-mount varactor diode is required for VHF applications. The SOT-23 package offers space efficiency compared to through-hole alternatives. Consider the 30 V reverse voltage limit and 20 mA forward current constraints during circuit design. Evaluate the 6 pF nominal capacitance and 6.5 ratio against the required tuning range and linearity specifications for the target RF application.

Part Context

The BBY40 belongs to NXP's family of silicon dual varactor diodes designed for high-frequency applications. The BBY40,235 specifically denotes the version packaged in the SOT-23 format, distinguishing it from other variants like the BBY40,215 which may use different packaging or reel configurations. This part number represents a standard commercial-grade component widely utilized in consumer electronics and communication hardware requiring precise capacitive tuning.

Replacement Considerations

Direct substitutes must match the SOT-23 package, 30 V reverse voltage, and similar capacitance characteristics. Verify pinout compatibility and thermal resistance values before substitution. Consult official cross-reference lists for approved equivalents that maintain identical electrical performance and mechanical dimensions.