EL8173FSZ-T7 Equivalent & Substitute Parts

Part Overview

The EL8173FSZ-T7 is an instrumentation amplifier manufactured by Renesas Electronics Corporation, designed for precision signal conditioning applications requiring rail-to-rail output capability in a compact 8-SOIC surface mount package. This device is classified as obsolete, necessitating identification of functionally compatible alternatives for new designs and production continuity. The EL8173FSZ-T7 operates across a 2.4V to 5.5V supply range with low input offset voltage and minimal input bias current, making it suitable for precision measurement and data acquisition systems.

Substiute Parts

EL8173FSZ-T7

Renesas Electronics CorporationIn Stock: 857EL8173FSZ-T7 Datasheet

Current PartRFQ

MCP6021T-E/SN

Microchip TechnologyIn Stock: 3914MCP6021T-E/SN Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the EL8173FSZ-T7 is determined by compatibility across the following critical parameters:

Package Compatibility: The substitute part must utilize the 8-SOIC surface mount package with identical 0.154" (3.90mm) width to ensure direct PCB layout compatibility without redesign.

Electrical Supply Range: The substitute must operate within the 2.4V to 5.5V supply voltage span to function in existing power distribution architectures.

Output Capability: Rail-to-rail output type is required to maintain signal swing characteristics in the original application.

Operating Temperature Range: The substitute must support the -40°C to 125°C operating temperature specification for environmental consistency.

Regulatory Compliance: ROHS3 compliance and REACH unaffected status are mandatory for supply chain and regulatory adherence.

The MCP6021T-E/SN from Microchip Technology meets these substitution criteria. While the MCP6021T-E/SN is classified as a general-purpose amplifier rather than an instrumentation amplifier, it satisfies all mandatory package, electrical, and compliance parameters. The functional difference between amplifier types does not preclude substitution when circuit topology and gain configuration are appropriately designed.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The EL8173FSZ-T7 is classified as obsolete, while the MCP6021T-E/SN maintains active product status with ongoing manufacturer support and availability. Active product status ensures continued supply chain access and technical documentation updates.

Compliance Alignment: Both devices maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new product designs and manufacturing operations.

Supply Availability: The MCP6021T-E/SN demonstrates significantly higher inventory availability (3,846 pieces) compared to the EL8173FSZ-T7 (800 pieces), supporting production continuity and reducing procurement risk.

Package and Thermal Compatibility: Identical 8-SOIC packaging and matching operating temperature ranges (-40°C to 125°C) enable direct substitution without PCB redesign or thermal management modifications.

Electrical Operating Range: The MCP6021T-E/SN minimum supply voltage of 2.5V is marginally higher than the EL8173FSZ-T7 specification of 2.4V. Applications operating below 2.5V require circuit topology evaluation. The maximum supply voltage of 5.5V is identical across both devices.

Frequently Asked Questions (FAQ)

Q: Can the MCP6021T-E/SN directly replace the EL8173FSZ-T7 without PCB modifications?

A: Yes. Both devices utilize identical 8-SOIC packaging with 0.154" (3.90mm) width and surface mount configuration. Pin-to-pin compatibility and footprint alignment enable direct substitution without PCB layout changes.

Q: What are the key electrical differences between these devices?

A: The MCP6021T-E/SN exhibits higher slew rate (7V/µs versus 0.55V/µs), lower input bias current (1pA versus 700pA), and higher quiescent supply current (1mA versus 65µA). The MCP6021T-E/SN has higher input offset voltage (500µV versus 200µV). These differences reflect the general-purpose amplifier classification of the MCP6021T-E/SN versus the precision instrumentation amplifier design of the EL8173FSZ-T7.

Q: Is the MCP6021T-E/SN suitable for applications requiring the EL8173FSZ-T7's low input offset voltage specification?

A: The MCP6021T-E/SN input offset voltage of 500µV exceeds the EL8173FSZ-T7 specification of 200µV. Applications with stringent offset voltage requirements must evaluate circuit-level compensation techniques or alternative devices.

Q: What is the minimum supply voltage for the MCP6021T-E/SN?

A: The MCP6021T-E/SN operates at a minimum supply voltage of 2.5V, compared to the EL8173FSZ-T7 minimum of 2.4V. Applications requiring operation below 2.5V are not compatible with the MCP6021T-E/SN.

Q: Are both devices RoHS compliant?

A: Yes. Both the EL8173FSZ-T7 and MCP6021T-E/SN maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements.

Q: What is the moisture sensitivity level difference between these devices?

A: The EL8173FSZ-T7 has MSL 3 (168 hours), while the MCP6021T-E/SN has MSL 1 (unlimited). The MCP6021T-E/SN demonstrates superior moisture resistance, reducing handling and storage constraints.

Q: Why is the EL8173FSZ-T7 classified as obsolete?

A: Obsolete classification indicates the manufacturer has discontinued production and support. The MCP6021T-E/SN active status ensures ongoing availability, technical support, and supply chain reliability for new designs.