ZC831ATC

Overview

The ZC831ATC is a single varactor diode manufactured by Diodes Incorporated, designed for surface-mount applications in the SOT-23-3 package. It features a maximum peak reverse voltage of 25 V and operates within a junction temperature range of -55°C to 150°C. Key electrical specifications include a capacitance of 16.5 pF at 2 V and 1 MHz, with a Q factor of 300 at 3 V and 50 MHz. The device offers a capacitance ratio of 6.0 under C2/C20 conditions. This component belongs to the 830 Series and is classified as a discrete semiconductor product.

Feature Summary

• Single-channel varactor design optimized for RF tuning circuits
• Hermetically sealed construction suitable for harsh environments
• High Q-factor performance at standard RF frequencies

Applications

• Voltage-controlled oscillators (VCOs)
• RF filter tuning networks
• Frequency modulation circuits

Procurement Notes

Verify current availability status as the ZC831A family has been subject to discontinuation notices. Confirm RoHS compliance requirements against specific project standards, as the base series may not meet current regulations. Validate package integrity and pinout compatibility during sourcing to ensure correct integration into existing PCB layouts.

Selection Notes

Select this component when a high-Q varactor with a 25 V reverse voltage rating is required in a compact SOT-23-3 footprint. Ensure the operating frequency aligns with the specified Q-factor measurement points. Consider thermal management capabilities given the wide junction temperature range for high-reliability designs.

Part Context

The ZC831ATC is part of the 830 Series from Diodes Incorporated, which includes various varactor diodes. The 'TC' suffix typically denotes specific tape-and-reel packaging or quality grades within the manufacturer's lineup, distinct from the standard 'TA' variant. This series is engineered for stable capacitance variation under reverse bias conditions.