TC7126ACKW Equivalent & Substitute Parts

Part Overview

The TC7126ACKW is a 7-segment display driver IC manufactured by Microchip Technology, designed for 4.6-digit display applications. This surface-mount component operates at 9V supply voltage and is housed in a 44-MQFP package. The device is currently in active production status with ROHS3 compliance and MSL-3 moisture sensitivity rating. Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameters for this product category.

Substiute Parts

TC7126ACKW

Microchip TechnologyIn Stock: 1093TC7126ACKW Datasheet

Current PartRFQ

ICM7224IPL+

Analog Devices Inc./Maxim IntegratedIn Stock: 915ICM7224IPL+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC7126ACKW is evaluated based on the following critical parameters:

• Functional Classification: 7-segment display driver capability
• Digit Configuration: 4.6-digit or higher display support
• Supply Voltage Compatibility: Operating voltage range must accommodate 9V operation or be adjustable to this level
• Package Type: Surface-mount or through-hole packages with equivalent pin count and electrical compatibility
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status
• Product Status: Active production status ensures availability and support

The identified substitute ICM7224IPL+ operates as a 4.5-digit LCD driver with a different package type (40-DIP through-hole) and lower supply voltage range (3V ~ 6V). This substitute represents a functional upgrade in digit capacity but requires circuit-level voltage regulation and board layout modifications due to package incompatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the TC7126ACKW and ICM7224IPL+ maintain active production status and full regulatory compliance (ROHS3 and REACH unaffected). Selection between these components must account for the following constraints:

The TC7126ACKW is the primary component for applications requiring surface-mount integration, 9V supply operation, and 4.6-digit display capability within the 0°C to 70°C temperature range.

The ICM7224IPL+ serves as a substitute only in applications where through-hole mounting is acceptable, supply voltage can be regulated to the 3V to 6V range, and the extended operating temperature range (-20°C to 85°C) provides operational advantage. The upgrade to 4.5-digit capability may require firmware or display configuration modifications.

Direct pin-for-pin substitution is not possible due to package incompatibility (44-QFP surface-mount versus 40-DIP through-hole). Circuit redesign is required for any substitution implementation.

Frequently Asked Questions (FAQ)

Q: Can the ICM7224IPL+ be used as a direct replacement for the TC7126ACKW?

A: No. The components use different package types (surface-mount 44-QFP versus through-hole 40-DIP) and have different pin configurations. Board-level redesign is required for substitution.

Q: What is the primary difference in display capability between these components?

A: The TC7126ACKW supports 4.6-digit display applications, while the ICM7224IPL+ supports 4.5-digit display applications. The additional digit capacity of the substitute may require software or display configuration changes.

Q: Are both components compliant with environmental regulations?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental standards.

Q: What supply voltage considerations apply to substitution?

A: The TC7126ACKW operates at 9V. The ICM7224IPL+ requires 3V to 6V supply voltage. Substitution requires voltage regulation circuitry to step down the 9V supply to the acceptable range.

Q: How do the moisture sensitivity ratings compare?

A: The TC7126ACKW has MSL-3 (168-hour limit), requiring controlled storage and handling. The ICM7224IPL+ has MSL-1 (unlimited), providing superior moisture tolerance and lower handling complexity.

Q: What is the temperature operating range difference?

A: The TC7126ACKW operates from 0°C to 70°C. The ICM7224IPL+ operates from -20°C to 85°C, providing extended low-temperature and high-temperature capability.