MD0105K6-G

Specialized Overview

The MD0105K6-G is a four-channel high-voltage protection T/R switch manufactured by Microchip Technology. It operates in an 18-lead VDFN package with dimensions of 5 x 5 mm. The device provides up to ±130V input voltage protection and features a typical on-resistance of 15 Ω. Switching speeds are fast, with turn-on and turn-off times not exceeding 20 ns. The small signal bandwidth reaches 100 MHz. Operating junction temperature ranges from -40°C to +125°C.

Specialized Feature Summary

• Provides high-voltage current-limiting protection for low-noise receivers against transmit pulses
• Functions as a normally closed switch that opens when differential voltage exceeds ±2V
• Contains four electrically isolated channels without requiring external power supplies

Specialized Applications

• Medical ultrasound imaging systems
• Non-destructive testing (NDT) applications
• Fast resettable fuses for power line protection
• High-side switches and data acquisition instruments

Specialized Procurement Notes

Verify the specific ordering suffix K6 corresponds to the 18-lead VDFN package configuration. Confirm environmental compliance status indicated by the G suffix. Check official documentation for media type variations such as tray or reel quantities. Ensure compatibility with required operating temperatures and voltage ratings before procurement.

Specialized Selection Notes

Select this component for applications requiring automatic high-voltage blocking without external control logic. Verify that the peak switching current capability meets system requirements. Ensure proper grounding via the center tab for thermal management. Consider the package size constraints relative to the PCB layout design.

Specialized Part Context

This part belongs to the MD0105 family of high-voltage protection devices. It serves as a transmit-and-receive switch specifically designed for ultrasound transducer interfaces. The device integrates protection circuitry directly into the signal path to safeguard sensitive receiver components.

Specialized Replacement Considerations

Consult official Microchip documentation for confirmed substitute part numbers. Verify pinout compatibility and electrical specifications match exactly. Do not assume cross-compatibility with other multiplexer families.