ISL28176FBZ Equivalent & Substitute Parts

Part Overview

The ISL28176FBZ is a general purpose operational amplifier manufactured by Renesas Electronics Corporation, housed in an 8-SOIC surface mount package. This device features rail-to-rail output capability and is designed for low-power applications requiring single-circuit amplification. The ISL28176FBZ is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, maintenance, and production continuity. Substitute parts must maintain functional compatibility through matching package type, output configuration, and core electrical performance parameters.

Substiute Parts

ISL28176FBZ

Renesas Electronics CorporationIn Stock: 2734ISL28176FBZ Datasheet

Current PartRFQ

RE46C311S8F

Microchip TechnologyIn Stock: 2876RE46C311S8F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ISL28176FBZ is determined by strict alignment of the following parameters:

Package Compatibility: Both the main part and substitute must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure PCB footprint compatibility and assembly process continuity.

Functional Configuration: The substitute must provide a single general purpose operational amplifier circuit with rail-to-rail output capability to maintain circuit behavior and signal swing characteristics.

Supply Voltage Range: The substitute must operate within a supply voltage range that encompasses or exceeds the original specification. The ISL28176FBZ operates from 2.4 V to 5 V; substitutes must support this range or a compatible superset.

Mounting and Environmental Compliance: The substitute must be surface mount compatible and maintain RoHS3 compliance status for regulatory and manufacturing consistency.

The RE46C311S8F from Microchip Technology meets these core substitution criteria through identical package type, matching functional configuration, and regulatory compliance, despite differences in secondary performance parameters such as slew rate, gain bandwidth product, and supply current.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitution: The RE46C311S8F is the qualified substitute for the obsolete ISL28176FBZ. Both devices share identical package geometry (8-SOIC), functional configuration (single general purpose rail-to-rail amplifier), and regulatory compliance (ROHS3). The RE46C311S8F is currently in active production status, ensuring long-term availability and supply chain stability.

Supply Voltage Compatibility: The RE46C311S8F operates from 1.8 V to 5.5 V, which encompasses the ISL28176FBZ operating range of 2.4 V to 5 V. This extended range provides design flexibility for applications requiring lower minimum supply voltages.

Compliance and Certification: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for electronic component procurement and manufacturing.

Moisture Sensitivity Consideration: The RE46C311S8F carries MSL 1 (Unlimited) rating compared to the ISL28176FBZ MSL 3 (168 Hours). This represents an improvement in moisture tolerance, reducing handling and storage constraints during manufacturing and assembly operations.

Performance Parameter Differences: The RE46C311S8F exhibits lower slew rate (0.003 V/µs versus 0.13 V/µs) and reduced gain bandwidth product (10 kHz versus 400 kHz). Applications requiring high-speed signal processing or fast transient response must evaluate these differences against specific circuit requirements. The RE46C311S8F also demonstrates higher supply current (600 nA versus 55 µA), which may impact low-power battery-operated designs.

Operating Temperature Range: The RE46C311S8F supports -10°C to 60°C operation, which is narrower than the ISL28176FBZ range of -40°C to 125°C. Applications requiring extended temperature operation must confirm compatibility with the substitute's thermal specifications.

Frequently Asked Questions (FAQ)

Q: Can the RE46C311S8F directly replace the ISL28176FBZ on existing PCBs?

A: Yes, the RE46C311S8F is pin-compatible and uses the identical 8-SOIC package footprint. No PCB layout modifications are required for physical substitution. However, circuit performance differences must be evaluated before implementation.

Q: What are the primary differences between these two amplifiers?

A: The main differences are slew rate (0.13 V/µs versus 0.003 V/µs), gain bandwidth product (400 kHz versus 10 kHz), supply current (55 µA versus 600 nA), and operating temperature range (-40°C to 125°C versus -10°C to 60°C). The RE46C311S8F offers improved moisture tolerance (MSL 1 versus MSL 3) and extended maximum supply voltage (5.5 V versus 5 V).

Q: Is the RE46C311S8F suitable for high-frequency applications?

A: The RE46C311S8F has a gain bandwidth product of 10 kHz, which is significantly lower than the ISL28176FBZ at 400 kHz. Applications requiring bandwidth above 10 kHz should verify circuit performance requirements before substitution.

Q: What is the impact of the lower slew rate on circuit performance?

A: The RE46C311S8F slew rate of 0.003 V/µs limits the maximum rate of output voltage change. Applications requiring rapid signal transitions or fast settling times may experience performance degradation. Circuit simulation or prototype testing is necessary to confirm suitability for specific applications.

Q: Are there any supply voltage considerations for substitution?

A: The RE46C311S8F minimum supply voltage is 1.8 V, lower than the ISL28176FBZ minimum of 2.4 V. The maximum supply voltage for the RE46C311S8F is 5.5 V, compared to 5 V for the original part. Existing designs operating within 2.4 V to 5 V are compatible with both devices.

Q: How do the moisture sensitivity levels affect component handling?

A: The ISL28176FBZ (MSL 3) requires controlled storage and handling within 168 hours of moisture exposure. The RE46C311S8F (MSL 1) has unlimited moisture tolerance, simplifying inventory management and reducing risk of moisture-induced failures during manufacturing.

Q: What is the supply current difference and does it matter for my application?

A: The ISL28176FBZ draws 55 µA while the RE46C311S8F draws 600 nA. For battery-powered or ultra-low-power applications, the ISL28176FBZ is more efficient. For standard powered applications, this difference is typically negligible.

Q: Is the RE46C311S8F available in the same packaging options?

A: The RE46C311S8F is supplied in Tube packaging in 8-SOIC configuration. The original ISL28176FBZ packaging format is not specified in the available data. Both use identical 8-SOIC (0.154", 3.90mm Width) surface mount packages suitable for automated assembly.

Q: What is the operating temperature range difference and when does it matter?

A: The ISL28176FBZ operates from -40°C to 125°C while the RE46C311S8F operates from -10°C to 60°C. Applications requiring operation below -10°C or above 60°C must use the original ISL28176FBZ or identify alternative substitutes with extended temperature ratings.