TL061ACPSRG4 Equivalent & Substitute Parts

Part Overview

The TL061ACPSRG4 is a J-FET input operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device features a single amplifier circuit with a 1 MHz gain bandwidth product and 3.5 V/µs slew rate, designed for low-input-bias-current applications requiring J-FET input characteristics. The TL061ACPSRG4 is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value
Amplifier Type	J-FET
Number of Circuits	1
Gain Bandwidth Product	1 MHz
Slew Rate	3.5 V/µs
Current - Input Bias	30 pA
Voltage - Input Offset	3 mV
Current - Supply	200 µA
Voltage - Supply Span (Min)	7 V
Voltage - Supply Span (Max)	36 V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.209", 5.30mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the TL061ACPSRG4 is determined by the following critical parameters: single-circuit operational amplifier configuration, surface mount packaging, 1 MHz gain bandwidth product, and supply voltage compatibility within the 7 V to 36 V range. The substitute parts identified operate as general-purpose amplifiers with equivalent circuit count and bandwidth characteristics. All substitute candidates maintain ROHS3 compliance and surface mount form factors compatible with 8-SOIC package specifications.

The primary distinction between the original TL061ACPSRG4 and substitute parts lies in amplifier type classification: the TL061ACPSRG4 employs J-FET input architecture, while substitute parts utilize general-purpose amplifier designs. This functional difference does not preclude substitution in applications where the specific input impedance and bias current characteristics of J-FET inputs are not critical design requirements.

Parameter Comparison

Parameter	TL061ACPSRG4	MC33171DR2G	UA741CD	UA741CDT	UA741ID	UA741IDT
Manufacturer	Texas Instruments	onsemi	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics
Amplifier Type	J-FET	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	1	1	1	1	1	1
Gain Bandwidth Product	1 MHz	1.8 MHz	1 MHz	1 MHz	1 MHz	1 MHz
Slew Rate (V/µs)	3.5	2.1	0.5	0.5	0.5	0.5
Current - Input Bias	30 pA	20 nA	80 nA	10 nA	10 nA	10 nA
Voltage - Input Offset	3 mV	2 mV	1 mV	1 mV	1 mV	1 mV
Current - Supply	200 µA	220 µA	1.7 mA	1.7 mA	1.7 mA	1.7 mA
Voltage - Supply Span (Min)	7 V	3 V	7 V	10 V	10 V	10 V
Voltage - Supply Span (Max)	36 V	44 V	36 V	44 V	44 V	44 V
Operating Temperature	0°C ~ 70°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 105°C	-40°C ~ 105°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	8-SOIC (0.209", 5.30mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)
Product Status	Obsolete	Active	Last Time Buy	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MC33171DR2G (onsemi): This substitute offers active product status with expanded inventory availability (31,500 units). The MC33171DR2G provides enhanced gain bandwidth product (1.8 MHz) and improved slew rate (2.1 V/µs) relative to the TL061ACPSRG4. Supply voltage range extends to 3 V minimum, enabling operation in lower-voltage applications. Operating temperature range extends to -40°C to 85°C. ROHS3 compliance is maintained. Package dimensions differ (0.154" versus 0.209" width), requiring PCB layout verification.

UA741CDT (STMicroelectronics): This substitute maintains active product status with substantial inventory (82,190 units). The UA741CDT preserves the 1 MHz gain bandwidth product and 0°C to 70°C operating temperature range matching the original specification. Supply voltage range extends to 44 V maximum. Input bias current is reduced to 10 nA. ROHS3 compliance is maintained. Package dimensions differ (0.154" versus 0.209" width), requiring PCB layout verification.

UA741IDT (STMicroelectronics): This substitute offers active product status with extended operating temperature range (-40°C to 105°C) and good inventory availability (9,200 units). The UA741IDT maintains 1 MHz gain bandwidth product and ROHS3 compliance. Supply voltage range extends to 44 V maximum. Input bias current is reduced to 10 nA. Package dimensions differ (0.154" versus 0.209" width), requiring PCB layout verification.

UA741ID (STMicroelectronics): This substitute provides active product status with extended operating temperature range (-40°C to 105°C). Inventory availability is limited (1,323 units). The UA741ID maintains 1 MHz gain bandwidth product and ROHS3 compliance. Supply voltage range extends to 44 V maximum. Input bias current is reduced to 10 nA. Package dimensions differ (0.154" versus 0.209" width), requiring PCB layout verification.

UA741CD (Texas Instruments): This substitute carries Last Time Buy status with substantial inventory (38,276 units). The UA741CD maintains 1 MHz gain bandwidth product and 0°C to 70°C operating temperature range. Supply voltage range matches the original (7 V to 36 V). ROHS3 compliance is maintained. Package dimensions differ (0.154" versus 0.209" width), requiring PCB layout verification.

Frequently Asked Questions (FAQ)

Q: Can the MC33171DR2G directly replace the TL061ACPSRG4 without circuit modifications?

A: The MC33171DR2G operates within compatible supply voltage and gain bandwidth specifications. However, the package width differs (0.154" versus 0.209"), necessitating PCB layout evaluation. Input bias current increases from 30 pA to 20 nA, which may affect high-impedance input circuits. Slew rate reduction from 3.5 V/µs to 2.1 V/µs may impact high-frequency applications.

Q: What is the significance of the package width difference between the TL061ACPSRG4 and substitute parts?

A: The TL061ACPSRG4 uses an 8-SOIC package with 0.209" width, while all substitute parts employ 0.154" width 8-SOIC packages. This dimensional difference requires verification of PCB pad spacing and component placement. Physical footprint compatibility must be confirmed before substitution.

Q: Which substitute part offers the best inventory availability?

A: The UA741CDT provides the highest inventory level at 82,190 units, followed by UA741CD at 38,276 units and MC33171DR2G at 31,500 units. These quantities support production continuity for the TL061ACPSRG4 replacement.

Q: How does input bias current affect substitution suitability?

A: The TL061ACPSRG4 features 30 pA input bias current characteristic of J-FET input amplifiers. Substitute parts exhibit higher input bias currents (10 nA to 80 nA). In applications with high-impedance input sources or precision transimpedance configurations, this increase may introduce measurable error. Applications with lower source impedances tolerate this parameter variation.

Q: Are all substitute parts ROHS3 compliant?

A: All identified substitute parts maintain ROHS3 compliance, matching the environmental certification of the TL061ACPSRG4.

Q: What is the product status significance for long-term supply planning?

A: The TL061ACPSRG4 is classified as obsolete, indicating discontinued manufacturing. The UA741CDT and UA741IDT carry active status, ensuring ongoing availability. The UA741CD is designated Last Time Buy, indicating limited future supply. The MC33171DR2G maintains active status with strong inventory levels, supporting extended production requirements.

Q: How do operating temperature ranges affect substitute selection?

A: The TL061ACPSRG4 operates from 0°C to 70°C. The UA741CD and UA741CDT maintain this range. The UA741ID and UA741IDT extend to -40°C to 105°C, enabling operation in wider environmental conditions. The MC33171DR2G operates from -40°C to 85°C. Selection depends on application temperature requirements.

Q: Does the gain bandwidth product difference between parts affect circuit performance?

A: The TL061ACPSRG4 and most substitute parts maintain 1 MHz gain bandwidth product. The MC33171DR2G provides 1.8 MHz, offering enhanced frequency response. In bandwidth-limited applications, this increase may alter circuit behavior. In applications where 1 MHz bandwidth is specified, the MC33171DR2G provides additional performance margin.

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