TL071CD Equivalent & Substitute Parts

Part Overview

The TL071CD is a J-FET input operational amplifier manufactured by STMicroelectronics, 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 production requirements. The TL071CD series represents a foundational J-FET amplifier topology with single-circuit configuration, suitable for applications requiring low input bias current and moderate bandwidth performance.

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	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the TL071CD is determined by strict alignment of electrical and mechanical parameters within the J-FET operational amplifier category. The critical parameters governing substitution eligibility are:

Electrical Compatibility Criteria:

Amplifier Type: J-FET (required)
Number of Circuits: 1 (required)
Package / Case: 8-SOIC form factor (required for PCB compatibility)
Voltage - Supply Span: Must encompass or exceed the 6V to 36V range of the TL071CD
Operating Temperature: Must support the 0°C to 70°C range minimum
Slew Rate, Gain Bandwidth Product, Input Bias Current, and Input Offset Voltage: Must be within acceptable operational parameters for the application

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount (required)
Supplier Device Package: 8-SOIC (required)

Substitute parts are grouped into two categories: direct equivalents from the TL071 base product family (manufactured by Texas Instruments and onsemi) and alternative J-FET amplifiers from other manufacturers (Texas Instruments LF356 series) that meet the electrical and mechanical requirements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (mA)	Output Current (mA)	Supply Span Min (V)	Supply Span Max (V)	Temp Range (°C)	RoHS Status
TL071CD	STMicroelectronics	Obsolete	16	4	20	3	1.4	40	6	36	0 to 70	ROHS3
TL071ACD	STMicroelectronics	Obsolete	16	4	20	3	1.4	40	6	36	0 to 70	ROHS3
TL071ACDR	Texas Instruments	Active	13	5.25	65	3	1.4	—	10	30	0 to 70	ROHS3
TL071BCD	Texas Instruments	Obsolete	13	5.25	65	2	1.4	—	10	30	0 to 70	ROHS3
TL071BCDR	Texas Instruments	Active	13	5.25	65	2	1.4	—	10	30	0 to 70	ROHS3
TL071CD (onsemi)	onsemi	Obsolete	16	5.25	20	3	1.4	40	6	36	0 to 70	Non-compliant
TL071CDR	Texas Instruments	Active	13	5.25	65	3	1.4	—	10	30	0 to 70	ROHS3
TL071ID	STMicroelectronics	Obsolete	16	4	20	3	1.4	40	6	36	-40 to 105	ROHS3
TL071IDR	Texas Instruments	Active	13	5.25	65	3	1.4	—	10	30	-40 to 85	ROHS3
LF356M/NOPB	Texas Instruments	Active	12	5	30	3	5	—	30	30	0 to 70	ROHS3
LF356MX/NOPB	Texas Instruments	Active	12	5	30	3	5	—	30	30	0 to 70	ROHS3

Engineering Selection Recommendations

Primary Substitutes (Active Status, ROHS3 Compliant):

The TL071CDR (Texas Instruments) and TL071BCDR (Texas Instruments) are the recommended primary substitutes for the obsolete TL071CD. Both devices maintain the TL071 base product family lineage, share identical 8-SOIC packaging, and carry active product status with ROHS3 compliance certification. The TL071CDR provides direct electrical compatibility within the specified operating temperature range of 0°C to 70°C and supply voltage envelope of 10V to 30V, which encompasses the original 6V to 36V specification for most practical applications. The TL071BCDR offers identical electrical characteristics with marginally improved input offset voltage (2 mV versus 3 mV).

Secondary Substitutes (Active Status, Extended Temperature Range):

The TL071IDR (Texas Instruments) extends the operating temperature range to -40°C to 85°C, providing enhanced thermal performance for applications requiring extended environmental operation. This device maintains ROHS3 compliance and active product status.

Alternative J-FET Amplifiers (Active Status, ROHS3 Compliant):

The LF356M/NOPB and LF356MX/NOPB (Texas Instruments BI-FET™ series) represent alternative J-FET amplifier solutions with active product status and ROHS3 compliance. These devices share the 8-SOIC package form factor and J-FET amplifier topology. The LF356 series exhibits higher supply current consumption (5 mA versus 1.4 mA) and fixed supply voltage specification (30V) compared to the TL071CD, requiring circuit design verification for compatibility.

Obsolete Alternatives (Not Recommended for New Designs):

The TL071ACD (STMicroelectronics) and TL071BCD (Texas Instruments) maintain obsolete product status and should not be selected for new production designs, despite ROHS3 compliance certification. The onsemi TL071CD variant carries non-compliant RoHS status and obsolete product classification.

Frequently Asked Questions (FAQ)

Q: Can the TL071CDR directly replace the TL071CD without circuit modification?

A: The TL071CDR shares identical electrical characteristics within the 0°C to 70°C operating temperature range and maintains compatibility with the 8-SOIC package footprint. The supply voltage specification differs (10V to 30V for TL071CDR versus 6V to 36V for TL071CD); circuit designs operating within the 10V to 30V envelope require no modification. Designs utilizing the 6V to 10V or 30V to 36V supply ranges require alternative selection or circuit redesign.

Q: What is the primary difference between TL071BCDR and TL071CDR?

A: Both devices share identical electrical performance and active product status. The TL071BCDR specifies input offset voltage of 2 mV compared to 3 mV for TL071CDR. Selection between these variants depends on application-specific offset voltage requirements.

Q: Are the LF356M/NOPB and LF356MX/NOPB interchangeable?

A: Both LF356 variants share identical electrical specifications and 8-SOIC packaging. The primary distinction is packaging format: LF356M/NOPB is supplied in Tube packaging, while LF356MX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format. Electrical performance and PCB compatibility are equivalent.

Q: Why does the TL071IDR have an extended temperature range?

A: The TL071IDR is specified for industrial temperature operation (-40°C to 85°C) compared to the commercial range (0°C to 70°C) of the TL071CD. This extended range classification reflects enhanced component screening and qualification procedures. Selection of the TL071IDR is appropriate for applications requiring operation beyond the commercial temperature envelope.

Q: Can the LF356 series replace the TL071 series in all applications?

A: The LF356 series maintains J-FET amplifier topology and 8-SOIC packaging compatibility. However, the LF356 exhibits higher supply current consumption (5 mA versus 1.4 mA) and fixed 30V supply specification. Applications with strict power consumption budgets or requiring operation below 10V supply voltage require verification of circuit compatibility before substitution.

Q: What is the significance of ROHS3 compliance in substitute selection?

A: ROHS3 compliance certification indicates conformance to Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. Selection of ROHS3-compliant substitutes ensures regulatory compliance for products destined for European Union markets and other regions enforcing equivalent environmental standards.

Q: Is the onsemi TL071CD a suitable substitute?

A: The onsemi TL071CD carries non-compliant RoHS status and obsolete product classification. This variant is not recommended for new production designs or applications requiring regulatory compliance certification.

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