TL071ACDG4 Equivalent & Substitute Parts

Part Overview

The TL071ACDG4 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 procurement. The TL071ACDG4 serves as a general-purpose JFET amplifier suitable for applications requiring low input bias current and stable gain-bandwidth characteristics across the specified supply voltage range.

Substiute Parts

TL071ACDG4

Texas InstrumentsIn Stock: 1185TL071ACDG4 Datasheet

Current PartRFQ

TL071ACDR

Texas InstrumentsIn Stock: 12738TL071ACDR Datasheet

MFR RecommendedRFQ

TL071ACD

STMicroelectronicsIn Stock: 4169TL071ACD Datasheet

MFR RecommendedRFQ

TL071ACDT

STMicroelectronicsIn Stock: 2357TL071ACDT Datasheet

MFR RecommendedRFQ

TL071CDT

STMicroelectronicsIn Stock: 6471TL071CDT Datasheet

MFR RecommendedRFQ

TL071IDT

STMicroelectronicsIn Stock: 17881TL071IDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL071ACDG4 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Amplifier Type: J-FET input configuration
• Number of Circuits: Single circuit per package
• Package / Case: 8-SOIC form factor with 0.154" width (3.90mm)
• Mounting Type: Surface mount technology
• Compliance: ROHS3 Compliant, MSL Level 1

Secondary Compatibility Parameters:

• Slew Rate: 13 V/µs (main part specification)
• Gain Bandwidth Product: 5.25 MHz (main part specification)
• Input Bias Current: 65 pA (main part specification)
• Supply Voltage Range: 10 V to 30 V minimum overlap required

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

Category A - Direct Electrical Equivalents (Texas Instruments TL071ACDR): Maintains identical electrical specifications including slew rate (13 V/µs) and gain bandwidth product (5.25 MHz). Product status is Active, ensuring continued availability.

Category B - Functional Equivalents (STMicroelectronics TL071ACD, TL071ACDT, TL071CDT, TL071IDT): Maintains J-FET amplifier topology and 8-SOIC packaging. Electrical parameters differ (slew rate 16 V/µs, gain bandwidth product 4 MHz, input bias current 20 pA). Supply voltage range extends to 6 V minimum and 36 V maximum, providing broader operational envelope. Multiple product status options (Active and Obsolete) available.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TL071ACDR

The TL071ACDR (Texas Instruments) is the preferred substitute for the obsolete TL071ACDG4. This part maintains complete electrical equivalence across all specified parameters: identical slew rate (13 V/µs), gain bandwidth product (5.25 MHz), input bias current (65 pA), and supply voltage range (10 V to 30 V). The TL071ACDR holds Active product status, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 Compliant with MSL Level 1 rating. The 8-SOIC package and surface mount configuration are identical, permitting direct board-level substitution without design modification.

Secondary Recommendation: TL071ACDT or TL071CDT

The TL071ACDT and TL071CDT (STMicroelectronics) are functional equivalents suitable for applications where the electrical parameter variations are acceptable. These parts maintain J-FET amplifier topology and 8-SOIC packaging. Electrical differences include higher slew rate (16 V/µs versus 13 V/µs), lower gain bandwidth product (4 MHz versus 5.25 MHz), and lower input bias current (20 pA versus 65 pA). Both parts hold Active product status. The TL071ACDT is available in Cut Tape packaging, while TL071CDT is available in Cut Tape and Digi-Reel formats. Extended supply voltage range (6 V to 36 V) provides operational flexibility beyond the main part specification.

Tertiary Recommendation: TL071IDT

The TL071IDT (STMicroelectronics) offers the widest operating temperature range (-40°C to 105°C) compared to the main part (0°C to 70°C). This part is suitable for applications requiring extended temperature performance. Electrical specifications match the TL071ACDT and TL071CDT. Highest inventory availability (17800 Pcs) ensures procurement reliability. Active product status and ROHS3 compliance are maintained.

Not Recommended: TL071ACD

The TL071ACD (STMicroelectronics) carries Obsolete product status, which contradicts the objective of replacing an obsolete component. While electrical specifications are compatible with Category B equivalents, this part does not resolve supply chain continuity concerns.

Frequently Asked Questions (FAQ)

Q1: Can the TL071ACDR be used as a direct replacement for the TL071ACDG4 without circuit modification?

A: Yes. The TL071ACDR maintains identical electrical specifications (slew rate, gain bandwidth product, input bias current, supply voltage range) and identical 8-SOIC packaging. Direct substitution is permissible at the board level without design changes.

Q2: What are the key differences between Category A (TL071ACDR) and Category B (TL071ACDT, TL071CDT, TL071IDT) substitutes?

A: Category A maintains exact electrical equivalence. Category B offers functional equivalence with improved slew rate (16 V/µs), lower input bias current (20 pA), and extended supply voltage range (6 V to 36 V minimum). Gain bandwidth product is lower in Category B (4 MHz versus 5.25 MHz). All maintain identical 8-SOIC packaging and J-FET amplifier topology.

Q3: Is the TL071IDT suitable for high-temperature applications?

A: The TL071IDT supports operating temperatures from -40°C to 105°C, compared to the main part range of 0°C to 70°C. This extended range accommodates high-temperature environments. Electrical specifications remain consistent with other STMicroelectronics Category B equivalents.

Q4: What is the significance of Active versus Obsolete product status?

A: Active status indicates ongoing manufacturer support, continued production, and long-term supply availability. Obsolete status indicates discontinued production and limited remaining inventory. For procurement planning, Active status parts (TL071ACDR, TL071ACDT, TL071CDT, TL071IDT) are preferred over Obsolete parts.

Q5: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (TL071ACDR, TL071ACD, TL071ACDT, TL071CDT, TL071IDT) are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited). Compliance certifications are identical to the main part.

Q6: Can the TL071ACDT and TL071CDT be used interchangeably?

A: Yes. Both parts are manufactured by STMicroelectronics with identical electrical specifications. The primary difference is packaging format: TL071ACDT is supplied in Cut Tape, while TL071CDT is available in Cut Tape and Digi-Reel formats. Selection depends on procurement and assembly requirements.

Q7: What inventory levels are available for each substitute?

A: TL071ACDR: 12700 Pcs; TL071ACD: 4066 Pcs; TL071ACDT: 2278 Pcs; TL071CDT: 6375 Pcs; TL071IDT: 17800 Pcs. The TL071IDT offers the highest inventory availability.

Q8: Does the extended supply voltage range of Category B parts (6 V to 36 V) affect circuit design?

A: The extended range provides operational flexibility. Circuits designed for the main part specification (10 V to 30 V) operate within the Category B range. Lower minimum voltage (6 V) enables operation in lower-voltage applications. Higher maximum voltage (36 V) permits use in higher-voltage systems. No circuit modification is required if the original design operates within 10 V to 30 V.