CMKD4448 TR PBFREE

Overview

The CMKD4448 is a surface mount triple isolated high speed silicon switching diode manufactured by Central Semiconductor Corp. It contains three independent diodes in an SOT-363 package. Key electrical parameters include a continuous reverse voltage of 75 V, peak repetitive reverse voltage of 100 V, and continuous forward current of 250 mA per diode. The device features a maximum reverse recovery time of 4.0 ns at specified test conditions. Power dissipation is rated at 325 mW with a thermal resistance of 461 °C/W. Operating junction temperature ranges from -65 to +175 °C.

Feature Summary

• Triple isolated configuration containing three independent high-speed silicon switching diodes within a single surface mount package.
• Ultra-high speed switching capability characterized by a rapid 4.0 ns reverse recovery time for efficient signal processing.
• Robust thermal performance supporting operation across a wide junction temperature range up to +175 °C.

Applications

• High speed switching applications requiring multiple isolated channels
• Signal processing circuits utilizing fast recovery characteristics
• Compact surface mount designs integrating multiple diode functions

Procurement Notes

Verify the specific ordering suffix when purchasing. The datasheet indicates that adding PBFREE denotes lead-free plating options. Confirm the exact part number matches your required plating specification before placing orders to ensure compliance with project material constraints.

Selection Notes

Select this component when a design requires three electrically isolated switching diodes in a minimal footprint. The SOT-363 package offers space efficiency compared to discrete components. Ensure the circuit operates within the 75 V continuous reverse voltage limit and respects the 325 mW power dissipation rating under expected thermal conditions.

Part Context

This component belongs to Central Semiconductor's lineup of surface mount discrete semiconductors. It utilizes an epitaxial planar process and is housed in an epoxy molded ULTRAmini™ package. The marking code K48 identifies the device on the package body.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and electrical ratings if considering alternative manufacturers.

FAQ

What is the pin configuration for the CMKD4448?

Pin 1 is Anode D1, Pin 2 is Anode D2, Pin 3 is Anode D3, Pin 4 is Cathode D3, Pin 5 is Cathode D2, and Pin 6 is Cathode D1.

What is the maximum operating junction temperature?

The maximum operating and storage junction temperature is +175 °C.

How is the device marked?

The marking code on the package is K48.