LM301ADT Equivalent & Substitute Parts

Part Overview

The LM301ADT is a general-purpose operational amplifier manufactured by STMicroelectronics in an 8-SOIC surface mount package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. The LM301ADT operates across a supply voltage range of 10V to 44V with a slew rate of 0.5V/µs and gain bandwidth product of 1 MHz, making it suitable for general-purpose amplification applications requiring moderate bandwidth and supply flexibility.

Substiute Parts

LM301ADT

STMicroelectronicsIn Stock: 352706LM301ADT Datasheet

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LM301ADR2G

onsemiIn Stock: 3651LM301ADR2G Datasheet

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TL061ID

STMicroelectronicsIn Stock: 2401TL061ID Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM301ADT is determined by strict alignment of electrical and mechanical parameters within the general-purpose amplifier category. The following criteria establish valid substitution relationships:

Primary Substitution Criteria:

• Identical package type: 8-SOIC surface mount configuration
• Matching number of circuits: Single circuit requirement
• Compatible supply voltage range: Minimum 10V and maximum voltage sufficient for application
• Equivalent or superior slew rate: 0.5V/µs or greater
• Matching gain bandwidth product: 1 MHz
• Input bias current within specification: 70 nA nominal
• Input offset voltage within specification: 2 mV nominal
• Output current capability: Minimum 30 mA per channel
• Operating temperature range compatibility: 0°C to 70°C minimum
• Compliance certifications: ROHS3 and REACH status alignment

The LM301ADR2G (onsemi) qualifies as a direct substitute based on identical electrical specifications and package configuration. The TL061ID (STMicroelectronics) represents a functionally different amplifier type (J-FET input stage) with superior performance characteristics in specific parameters but operates under different electrical constraints.

Parameter Comparison

Engineering Selection Recommendations

LM301ADR2G (onsemi) - Primary Substitute:

The LM301ADR2G is the direct functional equivalent of the LM301ADT. This component maintains identical electrical specifications including slew rate, input bias current, input offset voltage, and supply current. The maximum supply voltage specification of 36V is lower than the LM301ADT (44V maximum), requiring verification that application circuits do not exceed this limit. The LM301ADR2G carries active product status with ROHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term availability and regulatory alignment. This substitute is appropriate for applications requiring direct pin-for-pin replacement with equivalent performance characteristics.

TL061ID (STMicroelectronics) - Alternative Substitute:

The TL061ID operates as a functionally different amplifier employing J-FET input architecture rather than bipolar input stages. This device exhibits superior performance in specific parameters: slew rate of 3.5V/µs (7 times faster than LM301ADT), input bias current of 30 pA (2,333 times lower than LM301ADT), and lower supply current of 200µA. However, the TL061ID presents constraints including reduced output current capability (20 mA versus 30 mA) and lower maximum supply voltage (36V versus 44V). The TL061ID is suitable for applications where low input bias current and high slew rate are critical design requirements, provided output current and supply voltage constraints are accommodated. This device carries obsolete product status.

Compliance and Availability Considerations:

Both substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original LM301ADT. The LM301ADR2G offers superior long-term availability through active product status. Selection between substitutes depends on specific application requirements regarding supply voltage range, output current demands, and input bias current sensitivity.

Frequently Asked Questions (FAQ)

Q: Can the LM301ADR2G directly replace the LM301ADT in all applications?

A: The LM301ADR2G provides direct electrical and mechanical compatibility with the LM301ADT. The primary design constraint is the reduced maximum supply voltage specification of 36V compared to the LM301ADT's 44V maximum. Applications operating at supply voltages exceeding 36V require circuit redesign or alternative component selection.

Q: What are the key differences between the LM301ADR2G and TL061ID?

A: The LM301ADR2G maintains identical electrical specifications to the LM301ADT with general-purpose bipolar input architecture. The TL061ID employs J-FET input technology, resulting in significantly lower input bias current (30 pA versus 70 nA) and higher slew rate (3.5V/µs versus 0.5V/µs). The TL061ID provides reduced output current capability (20 mA versus 30 mA) and operates at lower supply current (200µA versus 1.8mA). Selection depends on whether low input bias current and high slew rate are required for the application.

Q: Are both substitute parts available in the same 8-SOIC package?

A: Yes, both the LM301ADR2G and TL061ID are packaged in 8-SOIC (0.154", 3.90mm width) surface mount configuration, providing identical mechanical compatibility with the LM301ADT. Pin-for-pin layout compatibility exists between LM301ADT and LM301ADR2G. The TL061ID shares the same package footprint but may require functional verification due to different input stage architecture.

Q: What is the significance of the LM301ADT being classified as obsolete?

A: Obsolete product status indicates that the LM301ADT is no longer manufactured and existing inventory will eventually deplete. The LM301ADR2G, classified as active, ensures continued availability for new designs and production requirements. Designs utilizing the LM301ADT should transition to the LM301ADR2G to maintain supply chain continuity.

Q: Do the substitute parts maintain the same compliance certifications?

A: Both substitute parts carry ROHS3 compliance and REACH unaffected status, matching the LM301ADT certifications. Moisture sensitivity level remains at MSL 1 (Unlimited) for all three components, indicating no special handling requirements during storage or assembly.

Q: What supply voltage range should be considered when selecting a substitute?

A: The LM301ADT operates across 10V to 44V supply range. The LM301ADR2G operates across 10V to 36V, requiring verification that application circuits do not exceed 36V. The TL061ID operates across 6V to 36V, providing lower minimum supply voltage but identical maximum specification to the LM301ADR2G. Applications requiring supply voltages between 36V and 44V must retain the LM301ADT or redesign circuits for lower supply voltages.

Q: How do input bias current specifications affect circuit design?

A: The LM301ADT and LM301ADR2G specify 70 nA input bias current, while the TL061ID specifies 30 pA. Applications sensitive to input bias current effects, such as high-impedance transimpedance amplifiers or precision instrumentation, benefit from the TL061ID's significantly lower bias current. General-purpose applications typically accommodate the 70 nA specification of the LM301ADT and LM301ADR2G without design modification.