CDBMH120-HF

Overview

The CDBMH120-HF is a Schottky Barrier Rectifier from Comchip Technology, housed in an SOD-123T (Mini-SMA) surface-mount package. It features a maximum repetitive peak reverse voltage of 20 V and a continuous forward current rating of 1.0 A. The device exhibits a maximum instantaneous forward voltage of 0.70 V at 1.0 A and a maximum reverse leakage current of 0.2 mA at 25°C. It supports a forward surge current of 30 A for 8.3 ms single half-sine-wave pulses. Thermal resistance from junction to case is typically 45 °C/W, with a junction capacitance of 120 pF at 1 MHz.

Feature Summary

• Utilizes silicon epitaxial planar chip technology with metal silicon junctions for ultra high-speed switching capabilities.
• Incorporates batch process design to optimize power dissipation, resulting in improved reverse leakage current and thermal resistance.
• Features a low profile molded plastic case designed to minimize board space requirements while providing overvoltage protection guarding.

Applications

• Low profile surface mounted applications requiring optimized board space utilization.
• High efficiency rectification circuits benefiting from low forward voltage drop characteristics.
• Overvoltage protection scenarios utilizing the device's high surge capability.

Procurement Notes

Verify component authenticity by checking for the specific marking code '12' on the SOD-123T package. Confirm compliance with MIL-STD-19500/228 environmental standards for lead-free parts. Ensure solderability meets MIL-STD-750 method 2026 requirements during assembly validation. Cross-reference datasheet QW-JB016 revision A for accurate electrical parameters.

Selection Notes

Select this component when a 20 V reverse voltage rating and 1.0 A continuous forward current are required in a compact surface-mount form factor. Consider the typical 45 °C/W thermal resistance for heat sink bottom designs. Evaluate the 120 pF junction capacitance for high-frequency switching applications operating at 1 MHz.

Part Context

This part belongs to the CDBMH series of SMD Schottky Barrier Rectifiers manufactured by Comchip Technology. The series offers various voltage ratings ranging from 20 V to 150 V within the same Mini-SMA/SOD-123T package style. All devices in this family share similar mechanical data and batch process design benefits for consistent performance across different voltage specifications.

Replacement Considerations

Compatible substitutes include other CDBMH series variants such as CDBMH140-HF or CDBMH160-HF if higher reverse voltage ratings are needed while maintaining identical package dimensions and electrical characteristics.

FAQ

What is the maximum non-repetitive forward surge current for the CDBMH120-HF?

The maximum forward surge current is 30 A for an 8.3 ms single half-sine-wave superimposed on rated load, following the JEDEC method.

How is polarity indicated on the CDBMH120-HF package?

Polarity is indicated by the cathode band printed on the molded plastic case.