ZC835ATC

Overview

The ZC835ATC is a single varactor diode manufactured by Diodes Incorporated, housed in a surface-mount SOT-23-3 package. It features a peak reverse voltage of 25 V and operates within a junction temperature range of -55°C to 150°C. Key electrical parameters include a capacitance of 74.8 pF at 2 V and 1 MHz, a capacitance ratio of 6.5, and a Q factor of 100 at 3 V and 50 MHz.

Feature Summary

• Single varactor diode design for variable capacitance applications
• Surface-mount SOT-23-3 packaging for compact integration
• High operating junction temperature capability up to 150°C

Applications

• Voltage-controlled oscillator (VCO) tuning circuits
• Frequency modulation (FM) modulators
• Phase-locked loop (PLL) filter networks

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'ATC' matches the required tape and reel configuration. Check for RoHS compliance status and ensure the obsolete product status does not conflict with long-term supply requirements. Request official datasheets to validate electrical characteristics against design specifications.

Selection Notes

Select this component when a high Q factor at 50 MHz and a capacitance ratio of 6.5 are required for precise frequency control. The SOT-23-3 package suits space-constrained designs. Consider the 25 V reverse voltage limit and 74.8 pF baseline capacitance at 2 V for circuit compatibility. Evaluate thermal management capabilities given the 150°C maximum junction temperature rating.

Part Context

This part belongs to the discrete semiconductor category, specifically varactors or varicap diodes produced by Diodes Incorporated. It serves as a voltage-variable capacitor element within electronic circuits. The device is distinct from standard rectifier or zener diodes due to its reliance on depletion layer capacitance changes under reverse bias conditions for signal processing applications.

Replacement Considerations

The product status is listed as Obsolete. No public confirmed substitute part numbers are available in the provided documentation. Designers must evaluate alternative varactor components with similar SOT-23-3 packaging, 25 V ratings, and comparable capacitance ratios for migration purposes.