CDBB5100-HF

Overview

The CDBB5100-HF is a Schottky barrier rectifier manufactured by Comchip Technology, designed for low-profile surface mount applications to optimize board space. It utilizes silicon epitaxial planar chip technology with a metal silicon junction and features a guard ring for overvoltage protection. The device operates within a temperature range of -50°C to +150°C. Key electrical parameters include a maximum repetitive peak reverse voltage (VRRM) of 100 V, a DC blocking voltage (VDC) of 100 V, and an RMS voltage (VRMS) of 70 V. At 25°C, the maximum instantaneous forward voltage (VF) is 0.81 V at 5.0 A. The component supports a continuous forward current (IO) of 5.0 A and a forward surge current (IFSM) of 125 A. Reverse leakage current (IR) is specified at 0.5 mA.

Feature Summary

• Ultra high-speed switching capability
• Guard ring structure for overvoltage protection
• Low power loss and high efficiency design

Applications

• Low profile surface mount applications requiring optimized board space
• High frequency inverters
• Free wheeling diodes
• Polarity protection circuits

Procurement Notes

Verify the specific part number against official manufacturer documentation before procurement. Confirm that the required voltage and current ratings align with your circuit design specifications. Ensure compliance with RoHS and Halogen-free requirements if mandated by your project standards. Check for any recent product change notices or reliability updates from Comchip Technology prior to finalizing orders.

Selection Notes

Select this component when a 100 V reverse voltage rating and 5.0 A forward current are required in a compact SMB package. Consider the thermal resistance and derating curves for high ambient temperature environments. Evaluate the forward voltage drop characteristics against system efficiency targets. Verify compatibility with standard SMD reflow soldering processes and recommended pad layouts provided in the datasheet.

Part Context

The CDBB5100-HF belongs to the CDBB series of SMD Schottky Barrier Rectifiers from Comchip Technology. This series includes variants with different reverse voltage ratings, such as the CDBB540-HF and CDBB560-HF, all sharing similar physical dimensions and packaging. The series is characterized by its use of silicon epitaxial planar chips and compliance with environmental standards like MIL-STD-19500/228.

Replacement Considerations

Direct substitutes within the same series include the CDBB540-HF and CDBB560-HF, which share identical packaging but differ in reverse voltage ratings. Cross-brand replacements must match the DO-214AA (SMB) footprint, 5.0 A current rating, and 100 V minimum reverse voltage specification.

FAQ

What is the maximum operating junction temperature for the CDBB5100-HF?

The maximum operating junction temperature (TJ) for the CDBB5100-HF is +150°C.

How does the CDBB5100-HF handle overvoltage conditions?

The device incorporates a guard ring structure specifically designed to provide protection against overvoltage events.

What is the typical reverse leakage current at 100°C?

The maximum reverse leakage current (IR) is specified as 0.5 mA at 25°C; however, the datasheet indicates increased leakage at higher temperatures, with typical values shown in Figure 4 reaching approximately 380 pF capacitance at 1 MHz, while leakage increases significantly at TJ=100°C.