QT118H-D

Overview

The QT118H-D is a capacitive touch sensor integrated circuit manufactured by Microchip Technology. It belongs to the QProx family and is designed for single-channel button applications with proximity detection capabilities. The device operates within a supply voltage range of 2.5V to 5.5V and consumes approximately 60µA of supply current. It features a 14-bit resolution for sensing accuracy. The component is housed in an 8-pin dual in-line package (8-PDIP) with a standard width of 0.300 inches (7.62mm). It supports through-hole mounting and functions within an operating temperature range of 0°C to 70°C. The part status is listed as discontinued.

Feature Summary

• Capacitive sensing technology enabling non-contact user interaction
• Integrated proximity detection functionality for enhanced gesture recognition
• Single-channel configuration optimized for dedicated button interfaces

Applications

• Consumer electronics requiring simple tactile-free input controls
• Industrial control panels needing durable, sealed interface solutions
• Appliance front panels where moisture or dust resistance is required

Procurement Notes

Verify end-of-life status before design finalization. Confirm availability through authorized distributors only. Check for RoHS compliance documentation as historical data indicates potential non-compliance. Ensure mechanical fitment matches existing PCB footprints for the 8-PDIP package. Validate supply chain stability due to discontinued status.

Selection Notes

Consider newer QProx variants if active sourcing is required. Evaluate power consumption requirements against the 60µA specification. Assess environmental conditions against the 0°C to 70°C operating range. Verify interface compatibility with host microcontrollers. Review pinout differences if migrating from previous generations.

Part Context

Part of the Microchip QProx capacitive touch controller family. Designed for low-cost, high-reliability touch sensing applications. Replaces older resistive or mechanical switch technologies. Compatible with standard DIP packaging for legacy board designs.

Replacement Considerations

No direct public substitute part numbers are confirmed. Evaluate QT112-D or QT115-D for similar functionality. Check for updated QProx series components with active status. Verify pin-to-pin compatibility before substitution.