ICL7621BESA CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The ICL7621BESA is a dual-channel CMOS operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, designed for rail-to-rail signal conditioning applications. This device integrates two independent amplifier circuits in an 8-SOIC surface mount package with a supply voltage range of 2V to 16V and operating temperature range of -40°C to 85°C.

The ICL7621BESA is classified as an obsolete product. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support long-term production requirements for applications currently utilizing this component.

Substiute Parts

ICL7621BESA

Analog Devices Inc./Maxim IntegratedIn Stock: 785ICL7621BESA Datasheet

Current PartRFQ

ICL7621BESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 883ICL7621BESA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICL7621BESA is determined by strict equivalence across the following critical parameters:

Electrical Performance Parameters:

• Amplifier topology (CMOS architecture)
• Dual-channel configuration (2 independent circuits)
• Rail-to-rail output capability
• Slew rate (1.6 V/µs)
• Gain bandwidth product (1.4 MHz)
• Input bias current (1 pA)
• Input offset voltage (5 mV)
• Supply current per channel (1 mA)
• Supply voltage range (2V to 16V minimum and maximum)
• Operating temperature range (-40°C to 85°C)

Physical & Mechanical Parameters:

• Package type: 8-SOIC surface mount
• Package dimensions: 0.154" width (3.90mm)
• Mounting technology: Surface mount

Compliance & Status Parameters:

• Base product number: ICL7621
• Manufacturer: Analog Devices Inc./Maxim Integrated

Substitute parts must match all electrical specifications, physical package dimensions, and mounting requirements. Packaging format (tube vs. other configurations) and product status (active vs. obsolete) do not disqualify substitution eligibility when all functional and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

ICL7621BESA+ as Direct Substitute:

The ICL7621BESA+ is a direct functional equivalent to the ICL7621BESA. All electrical performance parameters, physical package dimensions, and mounting specifications are identical. The ICL7621BESA+ is classified as an active product, ensuring ongoing availability and supply chain support.

Compliance Considerations:

The ICL7621BESA is RoHS non-compliant, while the ICL7621BESA+ is ROHS3 compliant. For applications subject to RoHS regulations or environmental compliance requirements, the ICL7621BESA+ provides regulatory alignment. Both parts maintain REACH unaffected status and EAR99 export classification.

Packaging & Inventory:

The ICL7621BESA+ is supplied in tube packaging format with 828 pieces currently in stock. The original ICL7621BESA has 697 pieces available. Selection between these variants should be based on packaging requirements and supply chain logistics rather than functional performance.

Product Status Impact:

The transition from the obsolete ICL7621BESA to the active ICL7621BESA+ ensures long-term design support and eliminates supply discontinuation risk. No functional redesign is required for this substitution.

Frequently Asked Questions (FAQ)

Q: Can the ICL7621BESA+ be used as a direct replacement for the ICL7621BESA in existing designs?

A: Yes. The ICL7621BESA+ is electrically and mechanically identical to the ICL7621BESA across all specified parameters. Pin configuration, package dimensions, electrical performance, and operating characteristics are equivalent. No circuit modifications are required.

Q: What is the difference between ICL7621BESA and ICL7621BESA+?

A: The primary differences are product status and compliance certification. The ICL7621BESA is obsolete and RoHS non-compliant. The ICL7621BESA+ is an active product with ROHS3 compliance. Electrical and mechanical specifications are identical. Packaging format differs (tube for the ICL7621BESA+).

Q: Are there any thermal or performance differences between these parts?

A: No. Both parts operate within the same temperature range (-40°C to 85°C) and deliver identical electrical performance including slew rate (1.6 V/µs), gain bandwidth product (1.4 MHz), and supply current specifications.

Q: Does the RoHS compliance difference affect circuit performance?

A: No. RoHS compliance relates to material composition and environmental standards, not electrical performance. Both parts function identically in circuit applications.

Q: What is the package compatibility between ICL7621BESA and ICL7621BESA+?

A: Both parts use the 8-SOIC surface mount package with identical dimensions (0.154" width, 3.90mm). PCB footprints and reflow soldering profiles are compatible.

Q: Is the ICL7621BESA+ available in the same quantities as the original part?

A: The ICL7621BESA+ has higher current inventory (828 pieces) compared to the ICL7621BESA (697 pieces), providing improved supply availability.

Q: Should I transition existing designs from ICL7621BESA to ICL7621BESA+?

A: Transition is recommended for new production runs and long-term supply security. The ICL7621BESA+ active status eliminates obsolescence risk while maintaining full functional compatibility.