TL070IDR Equivalent & Substitute Parts

Part Overview

The TL070IDR 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 substitute components for ongoing design support and procurement. The TL070IDR operates across a supply voltage range of 7V to 36V with a slew rate of 13V/µs and gain bandwidth product of 5.25 MHz, making it suitable for precision analog signal conditioning applications requiring low input bias current characteristics.

Substiute Parts

TL070IDR

Texas InstrumentsIn Stock: 1244TL070IDR Datasheet

Current PartRFQ

TL071IDT

STMicroelectronicsIn Stock: 17881TL071IDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL070IDR is determined by strict equivalence across the following critical parameters:

Mandatory Matching Criteria:

• Amplifier topology: J-FET input configuration
• Circuit count: Single operational amplifier per package
• Package type: 8-SOIC surface mount form factor with 0.154" (3.90mm) width
• Supply voltage compatibility: Minimum 7V to maximum 36V operating range
• Input offset voltage: 3 mV specification
• Supply current: 1.4 mA nominal draw
• Compliance certifications: ROHS3 and REACH status

Performance Parameters Evaluated:

• Slew rate (13 V/µs baseline)
• Gain bandwidth product (5.25 MHz baseline)
• Input bias current (65 pA baseline)
• Operating temperature range (-40°C to 85°C baseline)

The TL071IDT qualifies as a direct substitute based on matching package geometry, J-FET amplifier topology, single-circuit configuration, and overlapping supply voltage specifications. The substitute part maintains identical input offset voltage and supply current specifications while offering enhanced performance characteristics in slew rate, input bias current, and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The TL071IDT is a qualified substitute for the obsolete TL070IDR based on the following engineering criteria:

Product Status Alignment: The TL070IDR is classified as obsolete, creating supply chain discontinuity. The TL071IDT maintains active product status with confirmed inventory availability of 17,800 pieces, ensuring long-term procurement viability.

Compliance Certification Equivalence: Both components maintain identical ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and legacy system support. Moisture sensitivity level remains constant at MSL 1 (Unlimited), eliminating moisture-related handling constraints.

Package and Mounting Compatibility: Identical 8-SOIC surface mount packaging with 0.154" (3.90mm) width enables direct PCB footprint compatibility without layout modifications. Both components utilize the same supplier device package specification.

Electrical Parameter Compatibility: The TL071IDT maintains critical specifications including 3 mV input offset voltage and 1.4 mA supply current, ensuring functional equivalence in existing circuit designs. The substitute part operates across a 6V to 36V supply range, encompassing the original 7V to 36V specification with extended lower voltage capability.

Performance Enhancement: The TL071IDT provides measurable performance improvements including 16 V/µs slew rate (versus 13 V/µs) and reduced input bias current of 20 pA (versus 65 pA), delivering superior signal fidelity in precision applications. Extended operating temperature range of -40°C to 105°C (versus -40°C to 85°C) accommodates wider environmental deployment scenarios.

Frequently Asked Questions (FAQ)

Q: Can the TL071IDT be used as a direct replacement for the TL070IDR without circuit modifications?

A: Yes. The TL071IDT is electrically and mechanically compatible with the TL070IDR. Both components share identical 8-SOIC package geometry, J-FET amplifier topology, single-circuit configuration, and matching input offset voltage and supply current specifications. Direct PCB footprint substitution is supported without design changes.

Q: What are the key differences between the TL070IDR and TL071IDT?

A: The primary differences are product status and performance characteristics. The TL070IDR is obsolete; the TL071IDT is active. The TL071IDT offers improved slew rate (16 V/µs versus 13 V/µs), lower input bias current (20 pA versus 65 pA), and extended operating temperature range (-40°C to 105°C versus -40°C to 85°C). The TL071IDT also supports operation at 6V minimum supply voltage compared to 7V for the TL070IDR.

Q: Are there any supply voltage limitations when substituting the TL071IDT?

A: No. The TL071IDT operates across a 6V to 36V supply range, which fully encompasses the TL070IDR specification of 7V to 36V. The substitute part provides extended lower voltage capability without upper voltage restrictions.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the TL070IDR and TL071IDT are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is identical at MSL 1 (Unlimited), eliminating special handling requirements for either component.

Q: What is the inventory status of the TL071IDT?

A: The TL071IDT is actively manufactured with 17,800 pieces confirmed in stock as new original inventory. The TL070IDR, being obsolete, has limited remaining inventory of 1,140 pieces.

Q: How do the gain bandwidth products compare between these parts?

A: The TL070IDR specifies 5.25 MHz gain bandwidth product, while the TL071IDT specifies 4 MHz. This difference reflects different design optimization priorities. The TL071IDT prioritizes lower input bias current and improved slew rate characteristics, which are advantageous for precision signal conditioning applications.

Q: Is the TL071IDT available in the same packaging options as the TL070IDR?

A: Both components are supplied in 8-SOIC surface mount packages with identical 0.154" (3.90mm) width. The TL071IDT is available in Cut Tape (CT) and Digi-Reel® packaging formats, supporting both manual and automated assembly workflows.