TL071ID Equivalent & Substitute Parts Reference

Part Overview

The TL071ID is a J-FET input operational amplifier manufactured by Texas Instruments in 8-SOIC surface mount packaging. This device is classified as obsolete but remains in stock with 2,768 units available. The TL071ID serves as a precision amplifier for applications requiring low input bias current and low input offset voltage characteristics typical of J-FET input designs.

Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity, procurement planning, and long-term product support. Substitute parts must maintain electrical compatibility across critical parameters including slew rate, gain bandwidth product, input bias current, supply voltage range, and operating temperature specifications.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	1	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
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 ~ 85°C	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TL071ID is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Package compatibility: 8-SOIC form factor (0.154", 3.90mm Width)
Amplifier type: J-FET input topology
Single circuit configuration
Slew rate: minimum 13 V/µs
Gain bandwidth product: minimum 5 MHz
Input bias current: maximum 65 pA
Input offset voltage: maximum 3 mV
Supply voltage range: minimum 10 V to 30 V span
Operating temperature: minimum -40°C to 85°C coverage
Surface mount technology
RoHS3 compliance

Substitution Logic: Parts are grouped into two categories based on electrical performance alignment:

Category 1 - Direct J-FET Substitutes (Highest Compatibility): Parts maintaining J-FET amplifier topology with electrical parameters meeting or exceeding TL071ID specifications. These include TL071IDR, TL071CDT, TL071ACDT, TL071IDT, TL081CDT, and TL081IDT.

Category 2 - General Purpose Alternatives (Conditional Compatibility): Parts with general purpose amplifier topology offering comparable electrical performance within the 8-SOIC package. These include MC34071DR2G and MC33071DR2G, which provide wider supply voltage ranges and higher output current capability but operate at different temperature ranges.

Secondary Consideration: LF356M/NOPB represents a BI-FET™ series alternative with superior input bias current performance (30 pA) but operates at fixed 30 V supply span and narrower temperature range (0°C ~ 70°C).

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (mA)	Supply Span (V)	Temp Range (°C)	Product Status
TL071ID	Texas Instruments	J-FET	13	5.25	65	3	1.4	10–30	-40 to 85	Obsolete
TL071IDR	Texas Instruments	J-FET	13	5.25	65	3	1.4	10–30	-40 to 85	Active
TL071CDT	STMicroelectronics	J-FET	16	4	20	3	1.4	6–36	0 to 70	Active
TL071ACDT	STMicroelectronics	J-FET	16	4	20	3	1.4	6–36	0 to 70	Active
TL071IDT	STMicroelectronics	J-FET	16	4	20	3	1.4	6–36	-40 to 105	Active
TL081CDT	STMicroelectronics	J-FET	16	4	20	3	1.4	6–36	0 to 70	Active
TL081IDT	STMicroelectronics	J-FET	16	4	20	3	1.4	6–36	-40 to 105	Active
LF356M/NOPB	Texas Instruments	J-FET	12	5	30	3	5	30–30	0 to 70	Active
MC34071DR2G	onsemi	General Purpose	13	4.5	100	1	1.9	3–44	0 to 70	Active
MC33071DR2G	onsemi	General Purpose	13	4.5	100	1	1.9	3–44	-40 to 85	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

TL071IDR is the primary recommended substitute. Manufactured by Texas Instruments with active product status, it maintains identical electrical specifications to the TL071ID across all critical parameters: 13 V/µs slew rate, 5.25 MHz gain bandwidth product, 65 pA input bias current, and -40°C to 85°C operating range. Packaging is available in Cut Tape and Digi-Reel® formats with 63,220 units in stock. This part provides the highest confidence for direct substitution in existing designs.

For Extended Temperature Range Applications:

TL071IDT and TL081IDT, both manufactured by STMicroelectronics, extend the operating temperature range to -40°C to 105°C. While these parts exhibit improved slew rate (16 V/µs) and lower input bias current (20 pA), they operate at reduced gain bandwidth product (4 MHz). These parts are suitable for applications requiring extended high-temperature performance beyond the original TL071ID specification.

For Standard Commercial Temperature Range:

TL071CDT and TL081CDT provide active product status with commercial temperature range (0°C to 70°C). These STMicroelectronics parts offer enhanced slew rate (16 V/µs) and improved input bias current (20 pA) with wider supply voltage span (6–36 V). Selection is appropriate for non-critical temperature applications where the reduced operating range is acceptable.

For Low Input Bias Current Applications:

LF356M/NOPB offers superior input bias current performance (30 pA) within the BI-FET™ series. However, this part operates at fixed 30 V supply span and commercial temperature range (0°C to 70°C). Higher supply current (5 mA) and reduced gain bandwidth product (5 MHz) must be evaluated against application requirements. This part is suitable only when input bias current reduction is a primary design objective.

For Wide Supply Voltage Range Applications:

MC34071DR2G and MC33071DR2G provide general purpose amplifier topology with extended supply voltage range (3–44 V). These onsemi parts maintain 13 V/µs slew rate but operate at higher input bias current (100 nA) and reduced gain bandwidth product (4.5 MHz). MC33071DR2G extends temperature range to -40°C to 85°C. Selection is appropriate for applications requiring wide supply voltage compatibility where J-FET input characteristics are not critical.

Compliance and Certification:

All substitute parts maintain RoHS3 compliance, REACH unaffected status, and Moisture Sensitivity Level 1 (unlimited). ECCN classification remains EAR99 for all parts. No additional regulatory considerations apply to substitution decisions.

Frequently Asked Questions (FAQ)

Q: Can TL071IDR be used as a direct replacement for TL071ID in production designs?

A: Yes. TL071IDR maintains identical electrical specifications across all critical parameters: amplifier type (J-FET), 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), supply voltage span (10–30 V), and operating temperature range (-40°C to 85°C). Both parts use 8-SOIC packaging. The primary difference is product status (TL071IDR is active) and packaging format availability (Cut Tape and Digi-Reel®). No circuit modifications are required.

Q: What is the difference between TL071 and TL081 base product numbers?

A: Both TL071 and TL081 are J-FET input operational amplifiers in 8-SOIC packaging with identical electrical performance in the substitute parts listed. The base product number distinction reflects historical Texas Instruments and STMicroelectronics product line designations. For substitution purposes, parts with identical electrical parameters and temperature ratings are interchangeable regardless of base product number.

Q: Why does LF356M/NOPB have higher supply current (5 mA) compared to TL071ID (1.4 mA)?

A: LF356M/NOPB is a BI-FET™ series amplifier with different internal circuit topology optimized for superior input bias current performance (30 pA versus 65 pA). This topology requires higher quiescent supply current. Applications sensitive to power consumption should retain TL071ID or TL071IDR rather than substituting LF356M/NOPB.

Q: Can MC34071DR2G or MC33071DR2G replace TL071ID in all applications?

A: MC34071DR2G and MC33071DR2G are general purpose amplifiers, not J-FET input designs. While they maintain 13 V/µs slew rate and 8-SOIC packaging, input bias current is significantly higher (100 nA versus 65 pA). These parts are suitable only for applications where J-FET input characteristics are not required. Applications dependent on low input bias current or low input offset voltage must use J-FET input alternatives (TL071IDR, TL071CDT, TL081CDT, or LF356M/NOPB).

Q: What is the impact of operating temperature range differences between substitute parts?

A: TL071ID operates from -40°C to 85°C. Substitute parts offer three temperature range options: (1) Identical range: TL071IDR; (2) Extended high-temperature: TL071IDT and TL081IDT (-40°C to 105°C); (3) Commercial range: TL071CDT, TL081CDT, LF356M/NOPB, MC34071DR2G (0°C to 70°C). Selection depends on application environment. Extended temperature parts are suitable for industrial and automotive applications. Commercial range parts are appropriate for standard commercial environments where the reduced range is acceptable.

Q: Are there packaging format differences between substitute parts?

A: Yes. TL071ID is supplied in Tube packaging. Substitute parts offer multiple packaging formats: TL071IDR (Cut Tape and Digi-Reel®), TL071CDT and TL071IDT (Cut Tape and Digi-Reel®), TL081CDT (Cut Tape), TL081IDT (Tape & Reel), LF356M/NOPB (Tube), MC34071DR2G (Tape & Reel), MC33071DR2G (Cut Tape). All parts use identical 8-SOIC (0.154", 3.90mm Width) case. Packaging format selection depends on procurement and assembly requirements; electrical performance is independent of packaging format.

Q: Which substitute part offers the best overall compatibility with TL071ID?

A: TL071IDR provides the highest compatibility. It is manufactured by the same company (Texas Instruments), maintains identical electrical specifications across all parameters, operates over the same temperature range (-40°C to 85°C), uses the same 8-SOIC package, and holds active product status with high inventory availability (63,220 units). No design modifications or performance trade-offs are required.

Q: Can substitute parts be mixed in the same design or production batch?

A: All listed substitute parts are electrically compatible within the 8-SOIC package and maintain RoHS3 compliance. However, mixing parts with different electrical characteristics (such as combining TL071IDR with MC34071DR2G) introduces performance variability. Best practice is to standardize on a single substitute part number per design to ensure consistent electrical performance and simplify procurement, testing, and field support.

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