TL071CDRG4 Equivalent & Substitute Parts

Part Overview

The TL071CDRG4 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, which necessitates identification of equivalent and substitute components for ongoing design support and production requirements. The TL071CDRG4 operates across a supply voltage range of 10V to 30V with a slew rate of 13V/µs and gain bandwidth product of 5.25 MHz, making it suitable for precision analog signal processing applications requiring low input bias current and minimal input offset voltage.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	1	—
Slew Rate	13	V/µs
Gain Bandwidth Product	5.25	MHz
Current - Input Bias	65	pA
Voltage - Input Offset	3	mV
Current - Supply	1.4	mA
Voltage - Supply Span (Min)	10	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TL071CDRG4 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Amplifier Type: J-FET input configuration
Number of Circuits: Single circuit per package
Supply Voltage Range: Minimum 10V to maximum 30V operation
Input Bias Current: 65 pA specification
Input Offset Voltage: 3 mV specification
Slew Rate: 13V/µs minimum
Gain Bandwidth Product: 5.25 MHz minimum
Operating Temperature: 0°C to 70°C minimum range

Mechanical Compatibility Criteria:

Package Type: 8-SOIC surface mount
Package Dimensions: 0.154" width (3.90mm)
Mounting Type: Surface mount

Substitute parts are grouped into two categories based on their electrical performance relative to the main part:

Category 1 - Direct Electrical Equivalents (TL071CDR): Parts that maintain identical electrical specifications to the TL071CDRG4 across all key parameters, including slew rate, gain bandwidth product, and input bias current. These parts are fully interchangeable without circuit redesign.

Category 2 - Enhanced Performance Substitutes (TL071ACDT, TL071CDT, TL071IDT, TL081CDT, TL081IDT): Parts that exceed the electrical specifications of the TL071CDRG4 in one or more parameters. These substitutes provide superior performance characteristics while maintaining mechanical compatibility and core J-FET amplifier functionality. Enhanced specifications include higher slew rate (16V/µs), extended supply voltage range (6V to 36V), and reduced input bias current (20 pA). These parts are suitable for applications where the original specifications are met or exceeded.

Parameter Comparison

Parameter	TL071CDRG4	TL071CDR	TL071ACDT	TL071CDT	TL071IDT	TL081CDT	TL081IDT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Amplifier Type	J-FET	J-FET	J-FET	J-FET	J-FET	J-FET	J-FET
Number of Circuits	1	1	1	1	1	1	1
Slew Rate (V/µs)	13	13	16	16	16	16	16
Gain Bandwidth Product (MHz)	5.25	5.25	4	4	4	4	4
Current - Input Bias (pA)	65	65	20	20	20	20	20
Voltage - Input Offset (mV)	3	3	3	3	3	3	3
Current - Supply (mA)	1.4	1.4	1.4	1.4	1.4	1.4	1.4
Current - Output / Channel (mA)	—	—	40	40	40	40	40
Voltage - Supply Span (Min)	10 V	10 V	6 V	6 V	6 V	6 V	6 V
Voltage - Supply Span (Max)	30 V	30 V	36 V	36 V	36 V	36 V	36 V
Operating Temperature (°C)	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 105	0 to 70	-40 to 105
Package / Case	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)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: TL071CDR

The TL071CDR is the direct equivalent substitute for the obsolete TL071CDRG4. This Texas Instruments part maintains identical electrical specifications across all critical parameters: 13V/µs slew rate, 5.25 MHz gain bandwidth product, 65 pA input bias current, and 10V to 30V supply voltage range. The TL071CDR is classified as active product status, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 compliant with MSL 1 rating and identical 8-SOIC packaging. Direct substitution requires no circuit modifications or performance validation.

Secondary Recommendations: TL071ACDT, TL071CDT, TL071IDT, TL081CDT, TL081IDT

These STMicroelectronics alternatives provide enhanced electrical performance specifications while maintaining mechanical compatibility. All five parts feature 16V/µs slew rate (23% improvement), extended supply voltage range (6V to 36V), and reduced input bias current (20 pA). These substitutes are suitable for applications where the original TL071CDRG4 specifications are met or exceeded.

Temperature Range Considerations:

TL071IDT and TL081IDT extend the operating temperature range to -40°C to 105°C, compared to the standard 0°C to 70°C range of the TL071CDRG4. Selection of these extended-temperature variants is appropriate for applications requiring operation beyond the standard commercial temperature range.

Packaging Considerations:

All substitute parts are available in 8-SOIC surface mount packages with identical 0.154" (3.90mm) width. Packaging format variations (Cut Tape, Digi-Reel, Tape & Reel) do not affect electrical or mechanical compatibility and are determined by procurement and assembly requirements.

Compliance and Regulatory Status:

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, ensuring regulatory alignment with the original TL071CDRG4 across environmental and hazardous substance directives.

Frequently Asked Questions (FAQ)

Q: Can the TL071CDR be used as a direct replacement for the TL071CDRG4 without circuit modifications?

A: Yes. The TL071CDR maintains identical electrical specifications across all critical parameters including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and supply voltage range. The 8-SOIC package dimensions and surface mount configuration are identical. Direct substitution is supported without circuit redesign or performance validation.

Q: What is the primary difference between the TL071CDRG4 and the enhanced performance substitutes (TL071ACDT, TL071CDT, TL071IDT, TL081CDT, TL081IDT)?

A: The enhanced performance substitutes provide superior electrical specifications in three areas: slew rate increased from 13V/µs to 16V/µs, supply voltage range extended from 10-30V to 6-36V, and input bias current reduced from 65 pA to 20 pA. These improvements do not compromise compatibility with applications designed for the TL071CDRG4 specifications. The TL081 variants represent a different base product number but maintain identical J-FET amplifier functionality and 8-SOIC packaging.

Q: Are there temperature range limitations when selecting a substitute part?

A: The TL071CDRG4 operates across 0°C to 70°C. Most substitute parts (TL071CDR, TL071ACDT, TL071CDT, TL081CDT) maintain this temperature range. The TL071IDT and TL081IDT extend operation to -40°C to 105°C. Selection of extended-temperature variants is necessary only for applications requiring operation outside the standard 0°C to 70°C range.

Q: What is the significance of the different base product numbers (TL071 versus TL081)?

A: Both TL071 and TL081 are J-FET input operational amplifiers with identical 8-SOIC packaging and equivalent electrical performance specifications. The TL081 variants (TL081CDT, TL081IDT) are functionally compatible substitutes for the TL071CDRG4 and provide the same enhanced performance characteristics as their TL071 counterparts.

Q: Does packaging format (Cut Tape, Digi-Reel, Tape & Reel) affect electrical or mechanical compatibility?

A: No. Packaging format variations represent different delivery and handling methods for the same component. All packaging formats maintain identical electrical specifications and 8-SOIC physical dimensions. Packaging selection is determined by procurement, inventory management, and assembly process requirements, not by electrical or mechanical compatibility.

Q: Why is the TL071CDRG4 classified as obsolete, and what does this mean for design decisions?

A: Obsolete product status indicates that the manufacturer has discontinued production and support for the TL071CDRG4. This classification necessitates identification of active substitute parts to ensure long-term supply chain continuity and ongoing design support. The TL071CDR, classified as active product status, is the recommended replacement to maintain design continuity with equivalent electrical performance.

Q: Are all substitute parts ROHS3 compliant and suitable for regulated applications?

A: Yes. All substitute parts listed (TL071CDR, TL071ACDT, TL071CDT, TL071IDT, TL081CDT, TL081IDT) are ROHS3 compliant with MSL 1 rating and REACH unaffected status. These compliance certifications align with the original TL071CDRG4 and support applications subject to environmental and hazardous substance regulations.

Q: Can the enhanced performance characteristics of substitute parts introduce compatibility issues in existing circuit designs?

A: No. Enhanced specifications (higher slew rate, extended supply voltage range, reduced input bias current) represent improvements that do not degrade compatibility with applications designed for the TL071CDRG4. Circuits designed for the original specifications will operate within the enhanced performance envelope of substitute parts without modification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message