TL071IN Equivalent & Substitute Parts

Part Overview

The TL071IN is a J-FET input operational amplifier manufactured by STMicroelectronics, housed in an 8-DIP through-hole package. This device is classified as obsolete, though 1580 pieces remain in stock as new original inventory. The TL071IN serves applications requiring low input bias current and moderate bandwidth in single-channel amplifier configurations. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for new designs and long-term supply chain continuity.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	1	—
Slew Rate	16	V/µs
Gain Bandwidth Product	4	MHz
Current - Input Bias	20	pA
Voltage - Input Offset	3	mV
Current - Supply	1.4	mA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	6	V
Voltage - Supply Span (Max)	36	V
Operating Temperature Range	-40 to 105	°C
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the TL071IN is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Criteria:

Amplifier Type: J-FET (required for input bias current characteristics)
Number of Circuits: 1 (single-channel configuration)
Package / Case: 8-DIP (0.300", 7.62mm) (physical and pin compatibility)
Mounting Type: Through Hole (PCB assembly compatibility)
Voltage - Supply Span: Minimum 6V and Maximum 36V (power supply compatibility)

Acceptable Parameter Variations: Substitute parts may exhibit differences in slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current, provided they remain within the functional requirements of the application circuit. Operating temperature range may differ based on application requirements.

The substitute parts identified below maintain J-FET amplifier topology, single-circuit configuration, and 8-DIP through-hole packaging. All substitutes are ROHS3 compliant and REACH unaffected, ensuring regulatory alignment with the original part.

Parameter Comparison

Parameter	TL071IN (Main)	TL081CP	TL071BCP	TL071CP	TL071ACP	TL071IP	LF356N/NOPB	LT1793CN8#PBF	LT1793IN8#PBF
Manufacturer	STMicroelectronics	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
Amplifier Type	J-FET	J-FET	J-FET	J-FET	J-FET	J-FET	J-FET	J-FET	J-FET
Number of Circuits	1	1	1	1	1	1	1	1	1
Slew Rate (V/µs)	16	13	13	13	13	13	12	3.4	3.4
Gain Bandwidth Product (MHz)	4	3	5.25	5.25	5.25	5.25	5	4.2	4.2
Current - Input Bias (pA)	20	30	65	65	65	65	30	4	4
Voltage - Input Offset (mV)	3	3	2	3	3	3	3	0.25	0.25
Current - Supply (mA)	1.4	1.4	1.4	1.4	1.4	1.4	5	4.2	4.2
Voltage - Supply Span Min (V)	6	7	10	10	10	10	30	9	9
Voltage - Supply Span Max (V)	36	36	30	30	30	30	30	40	40
Operating Temperature Range (°C)	-40 to 105	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 85	0 to 70	0 to 70	-40 to 85
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Active Product Status, Extended Temperature Range):

The TL071IP (Texas Instruments) is the preferred substitute for applications requiring the extended operating temperature range of the TL071IN (-40°C to 85°C). This part maintains identical electrical characteristics to the TL071CP while supporting the lower temperature limit of the original device. The TL071IP is actively manufactured and ROHS3 compliant.

The LT1793IN8#PBF (Analog Devices Inc.) provides an alternative for extended temperature operation (-40°C to 85°C) with superior input offset voltage (250 µV versus 3 mV) and exceptionally low input bias current (4 pA versus 20 pA). This device supports a wider supply voltage range (9V to 40V) and is actively produced.

Secondary Substitutes (Active Product Status, Standard Temperature Range):

The TL071CP (Texas Instruments) is the highest-volume active substitute, with 22,300 pieces in stock. It maintains the TL071 base product characteristics with standard operating temperature range (0°C to 70°C). This part is suitable for applications not requiring extended temperature operation.

The TL071BCP (Texas Instruments) offers marginally improved input offset voltage (2 mV versus 3 mV) with identical electrical performance to the TL071CP, supporting standard temperature operation.

The TL071ACP (Texas Instruments) provides an intermediate option with standard temperature range and identical electrical specifications to the TL071CP.

The TL081CP (Texas Instruments) is a lower-bandwidth alternative (3 MHz versus 4 MHz) with extended supply voltage range (7V to 36V) matching the original TL071IN specification. This part supports standard temperature operation and is available in high volume (88,892 pieces).

The LF356N/NOPB (Texas Instruments, BI-FET™ series) offers 5 MHz gain bandwidth product with standard temperature operation and 30 pA input bias current. Supply voltage range is fixed at 30V.

Tertiary Substitute (Active Product Status, Standard Temperature Range):

The LT1793CN8#PBF (Analog Devices Inc.) provides superior precision characteristics (250 µV input offset, 4 pA input bias) with standard temperature operation (0°C to 70°C) and wide supply voltage range (9V to 40V).

Supply Chain Considerations:

All identified substitutes are actively manufactured and ROHS3 compliant. The TL071CP offers the largest available inventory (22,300 pieces), followed by TL081CP (88,892 pieces). For applications requiring extended temperature operation, TL071IP and LT1793IN8#PBF are the only active alternatives.

Frequently Asked Questions (FAQ)

Q: Can the TL071IN be directly replaced with any of the listed substitutes?

A: Direct replacement is possible for all listed substitutes in terms of pinout and package compatibility (8-DIP through-hole). However, electrical performance differences exist. The TL071CP, TL071BCP, and TL071ACP are pin-for-pin compatible with identical electrical characteristics. Other substitutes require circuit evaluation based on specific application requirements.

Q: Which substitute is best for applications requiring extended temperature operation?

A: The TL071IP and LT1793IN8#PBF both support extended temperature operation (-40°C to 85°C). The TL071IP maintains identical electrical characteristics to the standard TL071CP. The LT1793IN8#PBF offers superior precision with lower input offset voltage and input bias current but operates at higher supply current (4.2 mA versus 1.4 mA).

Q: What is the difference between TL071CP, TL071BCP, and TL071ACP?

A: All three parts share identical base product number (TL071) and electrical specifications. The primary difference is input offset voltage: TL071BCP specifies 2 mV, while TL071CP and TL071ACP specify 3 mV. All three support standard temperature operation (0°C to 70°C) and are actively manufactured.

Q: Is the TL081CP a suitable substitute for the TL071IN?

A: The TL081CP is functionally compatible with identical pinout and package. However, it operates at lower gain bandwidth product (3 MHz versus 4 MHz) and lower input bias current (30 pA versus 20 pA). The TL081CP is suitable for applications where the lower bandwidth is acceptable and the extended supply voltage range (7V to 36V) matches the original specification.

Q: What are the key differences between Texas Instruments and Analog Devices substitutes?

A: Texas Instruments substitutes (TL071 and TL081 series) maintain the original TL071IN electrical architecture with variations in temperature range and gain bandwidth product. Analog Devices LT1793 series offers superior precision characteristics (250 µV input offset, 4 pA input bias) with higher supply current consumption (4.2 mA versus 1.4 mA) and wider supply voltage range (9V to 40V).

Q: Are all substitutes ROHS3 compliant?

A: Yes, all identified substitutes are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original TL071IN.

Q: What is the supply voltage compatibility range for substitutes?

A: The TL071IN operates from 6V to 36V. Substitutes vary: TL081CP (7V to 36V), TL071 series (10V to 30V), LF356N/NOPB (30V fixed), and LT1793 series (9V to 40V). Circuit design must accommodate the specific supply voltage range of the selected substitute.

Q: Can the LF356N/NOPB be used as a direct substitute?

A: The LF356N/NOPB is pin-compatible with identical package and pinout. However, it operates at fixed 30V supply voltage (not a range), limiting flexibility in applications requiring variable supply voltages. The 5 MHz gain bandwidth product exceeds the TL071IN specification (4 MHz).

Q: Which substitute offers the lowest input bias current?

A: The LT1793CN8#PBF and LT1793IN8#PBF both specify 4 pA input bias current, significantly lower than the TL071IN (20 pA). This characteristic is beneficial for high-impedance input applications.

Q: What is the impact of slew rate differences on circuit performance?

A: The TL071IN specifies 16 V/µs slew rate. Most substitutes operate at lower slew rates (13 V/µs for TL071 series, 12 V/µs for LF356N/NOPB, 3.4 V/µs for LT1793 series). Lower slew rate limits the maximum rate of output voltage change, affecting high-frequency signal handling and transient response. Applications sensitive to slew rate must evaluate this parameter carefully.

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