ICL7126C/D Equivalent & Substitute Parts

Part Overview

The ICL7126C/D is a 4.6-digit display driver IC manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications. This component operates as a single-channel display driver with a 9V single supply voltage and supports operating temperatures from 0°C to 70°C. The part is classified as obsolete, making identification of suitable equivalent and substitute components essential for ongoing system support and new design implementations.

Substiute Parts

ICL7126C/D

Analog Devices Inc./Maxim IntegratedIn Stock: 1030ICL7126C/D Datasheet

Current PartRFQ

ICL7126CPL+

Analog Devices Inc./Maxim IntegratedIn Stock: 1148ICL7126CPL+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICL7126C/D is determined by the following critical parameters that must remain consistent across equivalent components:

• Resolution (Bits): 4.6 Digit display driver capability
• Number of Channels: Single channel (1)
• Voltage Supply Source: Single supply operation
• Voltage - Supply: 9V nominal supply voltage
• Operating Temperature Range: 0°C to 70°C
• Type: Display Driver functionality
• Base Product Number: ICL7126 series

The primary substitute identified is the ICL7126CPL+, which maintains all critical electrical parameters while offering a different physical package configuration (40-PDIP through-hole versus die form factor). This substitution is valid because the core functional specifications—resolution, channel count, supply voltage, and temperature range—remain identical.

Parameter Comparison

Engineering Selection Recommendations

The ICL7126CPL+ is the manufacturer-recommended substitute for the obsolete ICL7126C/D. Both components maintain identical electrical specifications across all critical parameters: 4.6-digit resolution, single-channel operation, 9V single supply voltage, and 0°C to 70°C operating temperature range.

The primary design consideration is the package transition from die form factor to 40-PDIP through-hole configuration. This change requires PCB layout modification and assembly process adjustment from surface-mount die bonding to through-hole insertion. Both components carry ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment.

The ICL7126CPL+ is currently in active production status, providing supply chain continuity and long-term availability compared to the obsolete ICL7126C/D.

Frequently Asked Questions (FAQ)

Q: Can the ICL7126CPL+ directly replace the ICL7126C/D in existing designs?

A: Electrical substitution is valid due to identical functional specifications. However, physical package differences (die versus 40-PDIP) require PCB redesign and assembly process changes. The through-hole package of the ICL7126CPL+ is not compatible with existing surface-mount die footprints.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is based on matching resolution (4.6 digit), channel count (1), supply voltage (9V single supply), operating temperature range (0°C to 70°C), and display driver functionality. All these parameters are identical between the main part and substitute.

Q: Why is the ICL7126C/D classified as obsolete?

A: The ICL7126C/D is listed as obsolete by the manufacturer. The ICL7126CPL+ represents the active production equivalent within the ICL7126 series.

Q: Are there compliance differences between the two parts?

A: Both components are ROHS3 compliant and REACH unaffected. Moisture sensitivity levels are identical at MSL 1 (Unlimited).

Q: What assembly considerations apply when transitioning from ICL7126C/D to ICL7126CPL+?

A: The ICL7126C/D uses surface-mount die assembly, while the ICL7126CPL+ requires through-hole insertion assembly. PCB layout, footprint design, and assembly equipment must be adjusted accordingly.