QT102-ISG Equivalent & Substitute Parts

Part Overview

The QT102-ISG is a capacitive touch sensor IC manufactured by Microchip Technology, designed for single-channel touch and proximity detection applications. It is packaged in SOT-23-6 surface mount configuration and operates across a 2V to 5.5V supply voltage range with 600µA typical supply current.

The QT102-ISG has reached obsolete product status. Identifying qualified substitute components is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this interface IC.

Substiute Parts

QT102-ISG

Microchip TechnologyIn Stock: 1108QT102-ISG Datasheet

Current PartRFQ

AT42QT1010-TSHR

Microchip TechnologyIn Stock: 12370AT42QT1010-TSHR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the QT102-ISG is determined by strict alignment of the following critical parameters:

• Single-channel capacitive touch sensor functionality with proximity detection capability
• 14-bit resolution for touch detection
• SOT-23-6 surface mount package configuration
• Operating temperature range of -40°C to 85°C
• ROHS3 compliance and MSL 1 rating
• Supply voltage compatibility within the specified range
• Microchip Technology QTouch™ series platform

The AT42QT1010-TSHR meets all substitution criteria as a direct equivalent within the QTouch™ product family, maintaining functional compatibility while offering improved supply current efficiency and extended lower voltage operation.

Parameter Comparison

Engineering Selection Recommendations

The AT42QT1010-TSHR is the qualified substitute for the obsolete QT102-ISG based on the following engineering criteria:

All critical electrical and mechanical parameters align with the original specification. The substitute maintains identical package configuration, pin count, and functional capability for single-channel capacitive touch sensing with proximity detection.

The AT42QT1010-TSHR offers measurable improvements: extended lower voltage operation (1.8V minimum versus 2V) and reduced supply current consumption (378.5µA versus 600µA). These enhancements provide design flexibility without compromising performance.

Both components maintain equivalent compliance certifications: ROHS3 compliance, MSL 1 rating, and identical REACH and ECCN classifications. The substitute is currently in active production status, ensuring long-term supply chain availability and support.

Frequently Asked Questions (FAQ)

Q: Can the AT42QT1010-TSHR be used as a direct replacement for the QT102-ISG in existing designs?

A: Yes. Both components share identical package configuration (SOT-23-6), pin count, functional specifications (single-channel touch sensing, 14-bit resolution, proximity detection), and operating temperature range. No PCB layout modifications are required.

Q: What are the key differences between these components?

A: The AT42QT1010-TSHR operates at a lower minimum supply voltage (1.8V versus 2V) and consumes less supply current (378.5µA versus 600µA). The QT102-ISG is obsolete; the AT42QT1010-TSHR is actively manufactured.

Q: Are there any compliance or certification differences?

A: No. Both components maintain identical ROHS3 compliance, MSL 1 rating, REACH status, and ECCN classification.

Q: Does the lower supply current of the AT42QT1010-TSHR affect functionality?

A: No. The reduced current consumption represents improved efficiency and does not impact touch detection capability, resolution, or operating characteristics.

Q: Is the AT42QT1010-TSHR available in the same packaging options?

A: The AT42QT1010-TSHR is supplied in Cut Tape (CT) and Digi-Reel® packaging. Verify packaging requirements for your procurement process.