TL061IDRG4 Equivalent & Substitute Parts

Part Overview

The TL061IDRG4 is a J-FET input operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as obsolete, though 1049 units remain in stock as new original inventory. The TL061IDRG4 is supplied in Tape & Reel (TR) packaging format.

Due to its obsolete product status, identifying equivalent and substitute parts is essential for design continuity, procurement planning, and long-term supply chain management. Active alternatives with identical or compatible electrical and mechanical specifications are available from multiple manufacturers.

Substiute Parts

TL061IDRG4

Texas InstrumentsIn Stock: 1073TL061IDRG4 Datasheet

Current PartRFQ

TL061IDR

Texas InstrumentsIn Stock: 18581TL061IDR Datasheet

MFR RecommendedRFQ

MC33171DR2G

onsemiIn Stock: 31603MC33171DR2G Datasheet

MFR RecommendedRFQ

TL061ACDT

STMicroelectronicsIn Stock: 1506TL061ACDT Datasheet

MFR RecommendedRFQ

TL061CDT

STMicroelectronicsIn Stock: 2820TL061CDT Datasheet

MFR RecommendedRFQ

TL061IDT

STMicroelectronicsIn Stock: 2517TL061IDT Datasheet

MFR RecommendedRFQ

UA741CD

Texas InstrumentsIn Stock: 38358UA741CD Datasheet

MFR RecommendedRFQ

UA741CDT

STMicroelectronicsIn Stock: 82224UA741CDT Datasheet

MFR RecommendedRFQ

UA741ID

STMicroelectronicsIn Stock: 1372UA741ID Datasheet

MFR RecommendedRFQ

UA741IDT

STMicroelectronicsIn Stock: 9257UA741IDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL061IDRG4 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Amplifier Type: J-FET input architecture
• Number of Circuits: Single circuit configuration
• Package / Case: 8-SOIC form factor (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Electrical specifications: Slew Rate (3.5 V/µs), Gain Bandwidth Product (1 MHz), Input Bias Current (30 pA), Input Offset Voltage (3 mV), Supply Current (200 µA)
• Supply Voltage Range: Minimum 7 V, Maximum 36 V
• Operating Temperature: -40°C ~ 85°C minimum requirement
• Compliance: ROHS3 Compliant, MSL 1

Substitute Categories:

Category 1: Direct J-FET Equivalents (Identical Electrical Specifications) Parts meeting all electrical parameters with J-FET input topology: TL061IDR, TL061ACDT, TL061CDT, TL061IDT

Category 2: General Purpose Alternatives (Compatible Package, Different Input Stage) Parts with general purpose amplifier topology in identical package: MC33171DR2G, UA741CD, UA741CDT, UA741ID, UA741IDT

The MC33171DR2G and UA741 series represent functional alternatives where general purpose amplifier performance is acceptable in place of J-FET input characteristics.

Parameter Comparison

Engineering Selection Recommendations

Tier 1: Direct Electrical Equivalents (Recommended Primary Substitutes)

TL061IDR, TL061CDT, TL061IDT, and TL061ACDT are direct functional equivalents of the TL061IDRG4. All maintain identical J-FET input architecture, electrical performance specifications, and 8-SOIC package format. These parts are currently in active production status with substantial inventory availability.

TL061IDR (Texas Instruments): Active status with 18,558 units in stock. Identical electrical specifications to the main part. Supplied in Cut Tape & Digi-Reel packaging. Recommended for immediate procurement.

TL061IDT (STMicroelectronics): Active status with 2,439 units in stock. Extends operating temperature range to -40°C ~ 105°C, providing enhanced thermal performance. Supplied in Cut Tape & Digi-Reel packaging.

TL061CDT (STMicroelectronics): Active status with 2,800 units in stock. Identical electrical specifications. Supplied in Cut Tape & Digi-Reel packaging. Operating temperature range 0°C ~ 70°C.

TL061ACDT (STMicroelectronics): Active status with 1,410 units in stock. Supplied in Tape & Reel packaging, matching the original part's packaging format. Operating temperature range 0°C ~ 70°C.

Tier 2: Functional Alternatives (General Purpose Amplifiers)

MC33171DR2G, UA741CD, UA741CDT, UA741ID, and UA741IDT represent functional alternatives where general purpose amplifier performance is acceptable. These parts differ in input stage architecture (general purpose vs. J-FET) and exhibit different electrical characteristics including lower slew rate (0.5 V/µs vs. 3.5 V/µs) and higher supply current (1.7 mA vs. 200 µA).

MC33171DR2G (onsemi): Active status with 31,500 units in stock. General purpose amplifier with enhanced supply voltage range (3 V ~ 44 V). Slew rate 2.1 V/µs. Suitable for applications where J-FET input characteristics are not critical.

UA741IDT (STMicroelectronics): Active status with 9,200 units in stock. Extended operating temperature range -40°C ~ 105°C. General purpose amplifier topology. Highest inventory availability among UA741 variants.

Compliance and Certification: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, matching the original part's regulatory requirements.

Frequently Asked Questions (FAQ)

Q1: Can TL061IDR directly replace TL061IDRG4 in existing designs?

Yes. TL061IDR is electrically and mechanically identical to TL061IDRG4. Both are J-FET input operational amplifiers with identical electrical specifications, supply voltage range, and operating temperature range. The primary difference is packaging format: TL061IDRG4 is supplied in Tape & Reel, while TL061IDR is supplied in Cut Tape & Digi-Reel. Both use the 8-SOIC package form factor.

Q2: What is the difference between J-FET and general purpose amplifier substitutes?

J-FET input amplifiers (TL061 series) feature extremely low input bias current (30 pA) and are optimized for high-impedance signal sources. General purpose amplifiers (UA741 series, MC33171) have higher input bias current (10 nA to 80 nA) and lower slew rate (0.5 V/µs to 2.1 V/µs). Selection depends on application requirements for input impedance and signal bandwidth.

Q3: Why does TL061IDT have an extended temperature range?

TL061IDT is rated for -40°C ~ 105°C operation, compared to -40°C ~ 85°C for TL061IDRG4. This extended range provides design margin for applications operating in elevated ambient temperatures or with thermal stress conditions. Electrical specifications remain identical across the temperature range.

Q4: Is UA741 a suitable substitute for TL061IDRG4?

UA741 is a functional alternative only in applications where J-FET input characteristics are not required. UA741 exhibits significantly different electrical performance: slew rate 0.5 V/µs (vs. 3.5 V/µs), input bias current 10 nA to 80 nA (vs. 30 pA), and supply current 1.7 mA (vs. 200 µA). Applications requiring high input impedance or fast signal response should use TL061 equivalents.

Q5: What packaging options are available for TL061 substitutes?

TL061 equivalents are available in two packaging formats: Tape & Reel (TR) and Cut Tape & Digi-Reel (CT). TL061ACDT matches the original part's Tape & Reel format. TL061IDR, TL061CDT, and TL061IDT are supplied in Cut Tape & Digi-Reel format. Both formats use identical 8-SOIC (0.154", 3.90mm Width) package geometry.

Q6: Which substitute offers the best long-term availability?

TL061IDR (Texas Instruments, 18,558 units in stock) and UA741IDT (STMicroelectronics, 9,200 units in stock) offer the highest inventory levels. TL061IDR is recommended for designs requiring J-FET input performance. Both parts are in active production status.

Q7: Are all substitutes ROHS3 compliant?

Yes. All substitute parts listed maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, matching the regulatory requirements of the original TL061IDRG4.