TL061ID Equivalent & Substitute Parts

Part Overview

The TL061ID is a J-FET input operational amplifier manufactured by STMicroelectronics in an 8-SOIC surface mount package. This device is classified as obsolete, indicating discontinued production and limited availability for new designs. The TL061ID serves applications requiring low input bias current and high input impedance characteristics inherent to J-FET amplifier architectures. Due to its obsolete status, identification of equivalent and substitute parts is necessary for design continuity, procurement alternatives, and long-term supply chain management.

Substiute Parts

TL061ID

STMicroelectronicsIn Stock: 2401TL061ID Datasheet

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MC33171DR2G

onsemiIn Stock: 31603MC33171DR2G Datasheet

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TL061ACD

STMicroelectronicsIn Stock: 2163TL061ACD Datasheet

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TL061ACDR

Texas InstrumentsIn Stock: 5348TL061ACDR Datasheet

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TL061CD

Texas InstrumentsIn Stock: 1138TL061CD Datasheet

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TL061CDR

Texas InstrumentsIn Stock: 55443TL061CDR Datasheet

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TL061ID

STMicroelectronicsIn Stock: 2401TL061ID Datasheet

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TL061IDR

Texas InstrumentsIn Stock: 18581TL061IDR Datasheet

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UA741CD

Texas InstrumentsIn Stock: 38358UA741CD Datasheet

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UA741CDR

Texas InstrumentsIn Stock: 35386UA741CDR Datasheet

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UA741CPSR

Texas InstrumentsIn Stock: 2443UA741CPSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL061ID is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Amplifier Type Compatibility: The TL061ID is a J-FET amplifier. Direct substitutes must maintain J-FET architecture to preserve input bias current characteristics (30 pA specification). Parts with different amplifier types (General Purpose) represent functional alternatives with different electrical behavior.

Package and Mounting: All substitute candidates must use 8-SOIC surface mount packaging with 0.154" (3.90mm) width to ensure PCB layout compatibility.

Electrical Performance Envelope: Substitute parts must operate within the supply voltage range (minimum 6 V to maximum 36 V for the TL061ID). Slew rate, gain bandwidth product, and output current specifications define performance boundaries for circuit operation.

Operating Temperature Range: The TL061ID operates from -40°C to 105°C. Substitutes with narrower temperature ranges (0°C to 70°C or -40°C to 85°C) represent restricted alternatives suitable only for applications within those narrower limits.

Product Status and Compliance: Active status parts provide ongoing availability and supply chain reliability. Obsolete and Last Time Buy designations indicate limited procurement windows. All candidates maintain ROHS3 compliance and identical HTSUS classification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (J-FET Architecture):

The TL061CDR and TL061ACDR from Texas Instruments represent the preferred substitutes for the TL061ID. Both parts maintain identical J-FET amplifier architecture, slew rate (3.5 V/µs), gain bandwidth product (1 MHz), and input bias current (30 pA) specifications. TL061CDR is designated Active status with 55,400 units in stock, providing superior supply chain continuity. TL061ACDR is also Active with 5,300 units available. Both operate within the 0°C to 70°C temperature range, which is narrower than the TL061ID's -40°C to 105°C range. Applications requiring the full extended temperature range of the original part should evaluate TL061IDR (Texas Instruments, Active status, -40°C to 85°C operating range, 18,558 units in stock).

Secondary Substitutes (General Purpose Architecture):

The UA741CDR and UA741CD represent functional alternatives with General Purpose amplifier architecture. These parts share the 1 MHz gain bandwidth product and 8-SOIC package but differ significantly in input bias current (80 nA versus 30 pA), slew rate (0.5 V/µs versus 3.5 V/µs), and supply current (1.7 mA versus 200 µA). UA741CDR is Active status with 35,300 units in stock. These substitutes are suitable only for applications where J-FET input characteristics are not critical to circuit performance.

Alternative Consideration:

The MC33171DR2G from onsemi is a General Purpose amplifier with Active status and 31,500 units in stock. This part offers extended supply voltage range (3 V to 44 V) and improved gain bandwidth product (1.8 MHz) but maintains General Purpose architecture with 20 nA input bias current and 2.1 V/µs slew rate.

Compliance and Certification:

All substitute candidates maintain ROHS3 compliance, MSL Level 1 (Unlimited), REACH Unaffected status, and identical HTSUS classification (8542.33.0001), ensuring regulatory equivalence for procurement and deployment.

Frequently Asked Questions (FAQ)

Q: Can TL061CDR directly replace TL061ID in all applications?

A: TL061CDR is electrically equivalent to TL061ID with identical J-FET architecture, slew rate, gain bandwidth product, and input bias current. The primary difference is operating temperature range: TL061CDR operates 0°C to 70°C while TL061ID operates -40°C to 105°C. Direct substitution is valid for applications operating within the 0°C to 70°C window. Applications requiring extended temperature operation must use TL061IDR (-40°C to 85°C) or verify circuit performance at temperature extremes.

Q: What is the difference between J-FET and General Purpose amplifier substitutes?

A: J-FET amplifiers (TL061 series) feature input bias current of 30 pA and high input impedance. General Purpose amplifiers (UA741 series, MC33171) feature input bias current of 20-80 nA and lower input impedance. J-FET architecture is required for applications sensitive to input bias current, such as high-impedance signal sources or precision instrumentation. General Purpose substitutes are suitable only when input bias current specifications are not critical.

Q: Is UA741CPSR compatible with TL061ID?

A: UA741CPSR uses 8-SO packaging (0.209", 5.30mm width) rather than 8-SOIC (0.154", 3.90mm width). While electrically similar to UA741CD and UA741CDR, the different package width requires PCB layout modification and is not a direct pin-compatible substitute. Additionally, UA741CPSR is General Purpose architecture, not J-FET.

Q: Why does TL061IDR have a narrower temperature range than TL061ID?

A: TL061IDR operates -40°C to 85°C while TL061ID operates -40°C to 105°C. This represents a manufacturing or specification difference between the STMicroelectronics original part and the Texas Instruments equivalent. For applications requiring operation above 85°C, TL061ID or TL061ACD specifications must be verified for availability or alternative solutions evaluated.

Q: What is the supply voltage compatibility between TL061ID and its substitutes?

A: TL061ID operates with supply voltage minimum of 6 V and maximum of 36 V. TL061CDR, TL061ACDR, and TL061IDR require minimum 7 V supply. Circuits designed for 6 V operation must use TL061ID or TL061ACD. MC33171DR2G operates with 3 V minimum supply, providing broader low-voltage compatibility. UA741 series requires 7 V minimum supply.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute candidates listed maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status, ensuring regulatory equivalence for procurement and deployment in compliant applications.

Q: Which substitute offers the best supply chain availability?

A: TL061CDR (Texas Instruments, Active status) provides the highest inventory with 55,400 units in stock. UA741CDR (Texas Instruments, Active status) offers 35,300 units. MC33171DR2G (onsemi, Active status) provides 31,500 units. All three represent long-term supply chain solutions compared to obsolete or Last Time Buy designations.