TL071IDRG4 Equivalent & Substitute Parts

Part Overview

The TL071IDRG4 is a J-FET input operational amplifier manufactured by Texas Instruments, packaged in 8-SOIC surface mount configuration. This device is classified as obsolete product status. The TL071IDRG4 serves applications requiring low input bias current and low input offset voltage characteristics typical of J-FET amplifier designs. Due to obsolete status, equivalent substitute parts with active product status are necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
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	-40°C to 85°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 TL071IDRG4 is determined by the following critical parameters: J-FET amplifier type, single circuit configuration, 8-SOIC package format, surface mount mounting type, and electrical specifications including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and supply voltage range.

The substitute parts are grouped into two categories based on electrical performance alignment:

Category 1: Direct Electrical Equivalents (TL071IDR) Parts maintaining identical electrical specifications to the TL071IDRG4, including 13 V/µs slew rate and 5.25 MHz gain bandwidth product. These parts differ only in product status (active versus obsolete) and packaging format (Cut Tape & Digi-Reel versus standard packaging).

Category 2: Functional Equivalents with Modified Specifications (TL071ACDT, TL071CDT, TL071IDT, TL081CDT, TL081IDT) Parts sharing the same J-FET amplifier architecture, single circuit configuration, and 8-SOIC package, but with different electrical performance parameters. These parts feature 16 V/µs slew rate, 4 MHz gain bandwidth product, and 20 pA input bias current. Supply voltage range extends to 6 V minimum and 36 V maximum. Operating temperature ranges vary by part number.

Parameter Comparison

Parameter	TL071IDRG4	TL071IDR	TL071ACDT	TL071CDT	TL071IDT	TL081CDT	TL081IDT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
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	13 V/µs	13 V/µs	16 V/µs	16 V/µs	16 V/µs	16 V/µs	16 V/µs
Gain Bandwidth Product	5.25 MHz	5.25 MHz	4 MHz	4 MHz	4 MHz	4 MHz	4 MHz
Current - Input Bias	65 pA	65 pA	20 pA	20 pA	20 pA	20 pA	20 pA
Voltage - Input Offset	3 mV	3 mV	3 mV	3 mV	3 mV	3 mV	3 mV
Current - Supply	1.4 mA	1.4 mA	1.4 mA	1.4 mA	1.4 mA	1.4 mA	1.4 mA
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 (Min)	-40°C	-40°C	0°C	0°C	-40°C	0°C	-40°C
Operating Temperature (Max)	85°C	85°C	70°C	70°C	105°C	70°C	105°C
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
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: TL071IDR

The TL071IDR is the preferred substitute for the obsolete TL071IDRG4. This part maintains identical electrical specifications including 13 V/µs slew rate, 5.25 MHz gain bandwidth product, 65 pA input bias current, and 10 V to 30 V supply voltage range. The TL071IDR is manufactured by Texas Instruments with active product status, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 compliant with MSL 1 rating. The TL071IDR is available in Cut Tape and Digi-Reel packaging formats with 63,220 pieces in stock.

Secondary Recommendations: TL071CDT and TL071IDT

The TL071CDT and TL071IDT are functional equivalents manufactured by STMicroelectronics with active product status. These parts share the same J-FET amplifier architecture and 8-SOIC package. Electrical differences include 16 V/µs slew rate (versus 13 V/µs), 4 MHz gain bandwidth product (versus 5.25 MHz), and improved input bias current of 20 pA (versus 65 pA). Supply voltage range extends to 6 V minimum and 36 V maximum. The TL071IDT supports extended operating temperature range from -40°C to 105°C. These parts are suitable for applications where the modified electrical specifications are compatible with circuit requirements.

Tertiary Recommendations: TL071ACDT, TL081CDT, TL081IDT

The TL071ACDT, TL081CDT, and TL081IDT are additional functional equivalents with identical electrical specifications to TL071CDT and TL071IDT. The TL081 series represents a different base product number but maintains J-FET amplifier architecture and 8-SOIC packaging. Operating temperature ranges vary: TL071ACDT and TL081CDT support 0°C to 70°C, while TL081IDT supports -40°C to 105°C. These parts are suitable for applications where temperature and performance specifications align with circuit requirements.

All substitute parts maintain ROHS3 compliance and MSL 1 rating consistent with the original TL071IDRG4.

Frequently Asked Questions (FAQ)

Q1: Can TL071IDR be used as a direct replacement for TL071IDRG4?

A: Yes. The TL071IDR maintains identical electrical specifications including slew rate (13 V/µs), gain bandwidth product (5.25 MHz), input bias current (65 pA), input offset voltage (3 mV), supply current (1.4 mA), and supply voltage range (10 V to 30 V). Both parts use 8-SOIC surface mount packaging. The primary difference is product status: TL071IDRG4 is obsolete while TL071IDR is active. Packaging format differs (standard versus Cut Tape & Digi-Reel), but electrical and mechanical compatibility is maintained.

Q2: What are the key differences between TL071IDR and TL071CDT?

A: The TL071IDR and TL071CDT differ in slew rate (13 V/µs versus 16 V/µs), gain bandwidth product (5.25 MHz versus 4 MHz), input bias current (65 pA versus 20 pA), and supply voltage minimum (10 V versus 6 V). The TL071CDT offers improved input bias current performance and extended supply voltage range. Both parts maintain identical input offset voltage (3 mV), supply current (1.4 mA), and 8-SOIC packaging. Operating temperature range differs: TL071IDR supports -40°C to 85°C while TL071CDT supports 0°C to 70°C.

Q3: Are all substitute parts compatible with the original 8-SOIC package footprint?

A: Yes. All substitute parts listed use 8-SOIC (0.154", 3.90mm Width) surface mount packaging. PCB footprint compatibility is maintained across all parts. Mechanical mounting and land pattern requirements are identical.

Q4: Which substitute part supports the widest operating temperature range?

A: The TL071IDT and TL081IDT both support -40°C to 105°C operating temperature range, which exceeds the original TL071IDRG4 range of -40°C to 85°C. These parts are suitable for applications requiring extended high-temperature operation.

Q5: What is the significance of the different base product numbers (TL071 versus TL081)?

A: The TL071 and TL081 represent different product lines within the J-FET amplifier family. Both maintain J-FET amplifier architecture and single circuit configuration in 8-SOIC packaging. The TL081 series (TL081CDT, TL081IDT) provides functional equivalence with identical electrical specifications to the TL071 variants. Selection between TL071 and TL081 series depends on application requirements and design specifications.

Q6: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, consistent with the original TL071IDRG4. Environmental and regulatory compliance is maintained across all alternatives.

Q7: What packaging formats are available for substitute parts?

A: The TL071IDR is available in Cut Tape (CT) and Digi-Reel packaging formats. The TL071ACDT and TL071CDT are available in Cut Tape format. The TL071IDT is available in Cut Tape and Digi-Reel formats. The TL081CDT is available in Cut Tape format. The TL081IDT is available in Tape & Reel format. Selection depends on production requirements and assembly processes.

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