QT8C04-ASG Equivalent & Substitute Parts

Part Overview

The QT8C04-ASG is a capacitive touch sensor IC manufactured by Microchip Technology, classified as an Interface component. This part is currently obsolete, with 1,065 units available in new original stock. As an obsolete product, identifying qualified substitute components is essential for ongoing system support, design updates, and production continuity. The QT8C04-ASG served applications requiring capacitive touch sensing functionality in embedded systems and consumer electronics.

Substiute Parts

QT8C04-ASG

Microchip TechnologyIn Stock: 1169QT8C04-ASG Datasheet

Current PartRFQ

AT42QT1245-AU

Microchip TechnologyIn Stock: 1999AT42QT1245-AU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The AT42QT1245-AU qualifies as a substitute for the QT8C04-ASG based on the following criteria:

• Both components are capacitive touch sensor ICs manufactured by Microchip Technology
• Both are classified within the Interface category
• Both maintain ROHS3 compliance, ensuring environmental and regulatory alignment
• The AT42QT1245-AU is an active product with current manufacturing support, providing long-term availability and supply chain stability
• The substitute part operates within compatible voltage supply ranges (3V ~ 5V) and maintains low power consumption characteristics suitable for touch sensing applications

Parameter Comparison

Engineering Selection Recommendations

The AT42QT1245-AU is the manufacturer-recommended substitute for the obsolete QT8C04-ASG. Selection of this substitute is supported by:

• Active product status ensuring continued availability and manufacturing support from Microchip Technology
• ROHS3 compliance alignment with the original part, maintaining regulatory and environmental standards
• Identical manufacturer source, reducing supply chain complexity and qualification risk
• Current inventory availability (1,900 units in stock) providing immediate procurement capability

For applications currently using the QT8C04-ASG, transition to the AT42QT1245-AU is the qualified path forward for new designs and production continuity.

Frequently Asked Questions (FAQ)

Q: Why is the QT8C04-ASG being replaced? A: The QT8C04-ASG is an obsolete product. The AT42QT1245-AU is the active substitute from Microchip Technology, ensuring continued support and supply availability.

Q: Are both parts ROHS3 compliant? A: Yes. Both the QT8C04-ASG and AT42QT1245-AU meet ROHS3 compliance requirements.

Q: What is the package difference between these parts? A: The AT42QT1245-AU is specified as a 32-TQFP (7x7) surface mount package. The QT8C04-ASG package specifications are not provided in the available data.

Q: What interface does the AT42QT1245-AU use? A: The AT42QT1245-AU communicates via SPI interface and supports up to 24 capacitive touch inputs.

Q: What are the power supply requirements for the substitute part? A: The AT42QT1245-AU operates at 3V to 5V supply voltage with a typical current consumption of 6.6mA.

Q: What is the operating temperature range? A: The AT42QT1245-AU operates across -40°C to 105°C, covering industrial and extended commercial temperature ranges.