TL071BCD Equivalent & Substitute Parts

Part Overview

The TL071BCD is a J-FET input operational amplifier manufactured by Texas Instruments in 8-SOIC surface mount packaging. This device is classified as obsolete product status. The TL071BCD provides single-circuit amplification with J-FET input characteristics suitable for low-input-bias-current applications. Due to its obsolete status, equivalent substitute parts with active product status are available to ensure design continuity and supply chain reliability.

Substiute Parts

TL071BCD

Texas InstrumentsIn Stock: 1633TL071BCD Datasheet

Current PartRFQ

TL071BCDR

Texas InstrumentsIn Stock: 5107TL071BCDR Datasheet

MFR RecommendedRFQ

LF356M/NOPB

Texas InstrumentsIn Stock: 30931LF356M/NOPB Datasheet

MFR RecommendedRFQ

MC34071ADG

onsemiIn Stock: 932MC34071ADG 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

Substitute parts for the TL071BCD are selected based on strict electrical and mechanical compatibility criteria. The primary substitution logic is based on the following allowed parameters:

Critical Matching Parameters:

• Amplifier Type: J-FET input configuration
• Number of Circuits: Single circuit (1)
• Package / Case: 8-SOIC form factor
• Mounting Type: Surface Mount
• Operating Temperature Range: Minimum 0°C to 70°C coverage
• Voltage Supply Span: Minimum 10V to 30V coverage
• RoHS Compliance: ROHS3 Compliant

Secondary Compatibility Parameters:

• Slew Rate: 13 V/µs or greater
• Gain Bandwidth Product: 5.25 MHz or greater
• Current - Input Bias: 65 pA or lower
• Voltage - Input Offset: 2 mV or lower
• Current - Supply: 1.4 mA or lower

Substitute parts meeting all critical parameters and maintaining or exceeding secondary parameters are classified as direct equivalents. Parts with active product status are prioritized over obsolete alternatives.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TL071BCDR

The TL071BCDR is the direct equivalent substitute for the TL071BCD. Both parts share identical electrical specifications including slew rate (13 V/µs), gain bandwidth product (5.25 MHz), input bias current (65 pA), input offset voltage (2 mV), and supply current (1.4 mA). The TL071BCDR maintains the same 8-SOIC package and surface mount configuration. The critical distinction is product status: TL071BCDR holds active status, ensuring continued availability and supply chain support. Both parts are manufactured by Texas Instruments and maintain ROHS3 compliance. The TL071BCDR is supplied in Cut Tape (CT) packaging versus the Tube packaging of the TL071BCD.

Secondary Substitute: TL071CDT and TL071ACDT

The TL071CDT and TL071ACDT, both manufactured by STMicroelectronics, provide J-FET amplifier functionality in 8-SOIC packaging with active product status. These parts feature improved slew rate (16 V/µs) and lower input bias current (20 pA) compared to the TL071BCD. However, the gain bandwidth product is reduced to 4 MHz. The voltage supply span minimum is 6V versus 10V for the TL071BCD. These parts are suitable for applications where the TL071BCD's 10V minimum supply requirement is not critical and where improved slew rate performance is beneficial.

Extended Temperature Range Option: TL071IDT

The TL071IDT, manufactured by STMicroelectronics, provides the same electrical characteristics as TL071CDT and TL071ACDT but with extended operating temperature range of -40°C to 105°C versus the standard 0°C to 70°C. This part is selected when designs require operation beyond standard commercial temperature limits. All other parameters remain equivalent to TL071CDT and TL071ACDT.

Alternative Consideration: LF356M/NOPB

The LF356M/NOPB, manufactured by Texas Instruments under the BI-FET™ series, is a J-FET amplifier in 8-SOIC packaging with active product status. This part features superior input bias current (30 pA) and is suitable for low-bias-current applications. However, the slew rate is reduced to 12 V/µs and gain bandwidth product is 5 MHz. The supply current is elevated to 5 mA. The voltage supply span is fixed at 30V minimum and maximum, providing less flexibility than the TL071BCD's 10V to 30V range.

Not Recommended: MC34071ADG

The MC34071ADG, manufactured by onsemi, is classified as a general-purpose amplifier rather than J-FET type. While it shares the 8-SOIC package and surface mount configuration, the amplifier type difference represents a fundamental functional distinction. The input bias current specification is 100 nanoamperes (100 nA) versus 65 picoamperes (65 pA) for the TL071BCD, representing a 1500-fold increase. This part is not suitable as a direct substitute for J-FET input applications requiring low input bias current characteristics.

Frequently Asked Questions (FAQ)

Q: Can TL071BCDR directly replace TL071BCD in existing designs?

A: Yes. The TL071BCDR is electrically and mechanically identical to the TL071BCD. Both parts feature identical slew rate (13 V/µs), gain bandwidth product (5.25 MHz), input bias current (65 pA), input offset voltage (2 mV), and supply current (1.4 mA). Both use 8-SOIC surface mount packaging. The primary difference is packaging format (Cut Tape versus Tube) and product status (Active versus Obsolete). No circuit modifications are required.

Q: What is the difference between TL071CDT and TL071IDT?

A: The TL071CDT and TL071IDT share identical electrical specifications and 8-SOIC packaging. The sole difference is operating temperature range: TL071CDT operates from 0°C to 70°C (commercial grade), while TL071IDT operates from -40°C to 105°C (industrial grade). Select TL071IDT when designs require operation outside the 0°C to 70°C range.

Q: Why is MC34071ADG not recommended as a substitute?

A: The MC34071ADG is classified as a general-purpose amplifier, not a J-FET amplifier. The input bias current is 100 nanoamperes, approximately 1500 times higher than the TL071BCD's 65 picoamperes. This fundamental difference in input characteristics makes it unsuitable for applications requiring low input bias current performance.

Q: What are the packaging differences among substitute parts?

A: All substitute parts use 8-SOIC (0.154", 3.90mm Width) surface mount packaging. Packaging format variations include: Tube (TL071BCD, LF356M/NOPB), Cut Tape (TL071BCDR, TL071ACDT), and Cut Tape & Digi-Reel® (TL071CDT, TL071IDT). These format differences affect order quantities and handling but do not impact electrical or mechanical compatibility.

Q: Can LF356M/NOPB replace TL071BCD in all applications?

A: LF356M/NOPB is suitable for applications where the reduced slew rate (12 V/µs versus 13 V/µs) and increased supply current (5 mA versus 1.4 mA) are acceptable. The fixed 30V supply span may be limiting for designs requiring 10V minimum supply operation. The superior input bias current (30 pA) makes it preferable for ultra-low-bias-current applications.

Q: What is the significance of ROHS3 compliance for all substitute parts?

A: All listed substitute parts maintain ROHS3 compliance, indicating conformance to Restriction of Hazardous Substances regulations. This compliance status ensures compatibility with modern manufacturing processes and regulatory requirements across global markets.

Q: Which substitute part offers the best inventory availability?

A: LF356M/NOPB offers the highest inventory level at 30,916 pieces in stock, followed by TL071IDT at 17,800 pieces. TL071CDT provides 6,375 pieces and TL071BCDR provides 5,026 pieces. Inventory levels should be verified with suppliers for current availability.