SVC389-TL-E

Overview

The SVC389-TL-E is a hyper-abrupt junction type silicon composite varactor diode manufactured by Sanyo Semicon Device. Designed for AM low voltage electronic tuning applications, this component features a common cathode configuration within a single pair arrangement. It is housed in the 3-CPH surface mount package, ensuring compact integration into modern circuit boards. The device operates with a maximum reverse voltage of 16 V, making it suitable for sensitive analog signal processing tasks where precise capacitance variation is required under low bias conditions.

Feature Summary

• Hyper-abrupt junction design for enhanced capacitance-voltage linearity
• Common cathode dual-diode structure for simplified circuit topology
• Optimized for low voltage electronic tuning operations

Applications

• AM radio receiver tuning circuits
• Low voltage electronic oscillator frequency control
• Analog signal processing variable capacitance networks

Procurement Notes

Verify the specific ordering suffix and manufacturer documentation to confirm current availability status, as components may be marked obsolete or discontinued. Ensure that the received units match the specified 3-CPH package dimensions and electrical characteristics defined in the official datasheet. Cross-reference part numbers with authorized distributors to avoid counterfeit products and confirm RoHS compliance status prior to procurement.

Selection Notes

Select this component when hyper-abrupt capacitance characteristics are necessary for AM tuning applications requiring low operating voltages. The common cathode configuration allows for differential tuning or balanced circuit designs without additional external components. Consider the 16 V maximum rating and surface mount form factor when designing PCB layouts for space-constrained consumer electronics or broadcast equipment.

Part Context

This varactor diode belongs to the family of silicon composite devices intended for precision tuning functions. Unlike standard abrupt junction varactors, the hyper-abrupt profile provides a steeper capacitance change relative to voltage adjustments. This characteristic is critical for maintaining consistent bandwidth and sensitivity in AM receivers across the tuning range, distinguishing it from general-purpose rectifying or switching diodes.

Replacement Considerations

Consult official substitution lists for compatible hyper-abrupt varactors with matching 3-CPH packaging and 16 V ratings. Verify that alternative parts maintain similar capacitance ratios and reverse leakage specifications to ensure circuit performance parity.

FAQ

What is the junction type of the SVC389-TL-E?

It utilizes a hyper-abrupt junction type silicon composite structure.

How are the diodes configured internally?

The device contains one pair of diodes arranged in a common cathode configuration.