TL071CDRE4 Equivalent & Substitute Parts

Part Overview

The TL071CDRE4 is a J-FET input operational amplifier manufactured by Texas Instruments, packaged in 8-SOIC surface mount configuration. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and production continuity. The TL071CDRE4 serves applications requiring low input bias current and low input offset voltage characteristics typical of J-FET amplifier designs. Due to its obsolete status, active production alternatives with compatible electrical and mechanical specifications are required for new procurement and design transitions.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	1	—
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	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TL071CDRE4 is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Critical Matching Parameters:

Amplifier Type: J-FET
Number of Circuits: 1
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Voltage - Supply Span compatibility (minimum 10V, maximum ≥30V)
Operating Temperature range coverage (minimum ≤0°C, maximum ≥70°C)
RoHS3 Compliance and MSL Level 1

Performance Parameters for Compatibility:

Slew Rate: 13 V/µs or higher
Gain Bandwidth Product: 4 MHz or higher
Current - Input Bias: 65 pA or lower
Voltage - Input Offset: 3 mV or lower
Current - Supply: 1.4 mA or lower

Substitute parts are grouped into two categories based on electrical performance alignment with the TL071CDRE4 specifications and product status (active vs. obsolete).

Parameter Comparison

Parameter	TL071CDRE4 (Main)	TL071CDR	LF351DT	TL071ACDT	TL071CDT	TL071IDT	TL081CDT	TL081IDT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Product Status	Obsolete	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
Number of Circuits	1	1	1	1	1	1	1	1
Slew Rate (V/µs)	13	13	16	16	16	16	16	16
Gain Bandwidth Product (MHz)	5.25	5.25	4	4	4	4	4	4
Current - Input Bias (pA)	65	65	20	20	20	20	20	20
Voltage - Input Offset (mV)	3	3	3	3	3	3	3	3
Current - Supply (mA)	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4
Voltage - Supply Span Min (V)	10	10	6	6	6	6	6	6
Voltage - Supply Span Max (V)	30	30	32	36	36	36	36	36
Operating Temperature (°C)	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 105	0 to 70	-40 to 105
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Level	1	1	1	1	1	1	1	1

Engineering Selection Recommendations

Primary Substitute: TL071CDR

The TL071CDR is the direct equivalent to TL071CDRE4. Both devices share identical electrical specifications including slew rate (13 V/µs), gain bandwidth product (5.25 MHz), input bias current (65 pA), and supply voltage range (10V to 30V). The TL071CDR maintains active product status from Texas Instruments, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 compliant with MSL Level 1 rating. The primary difference is packaging format: TL071CDR is supplied in Cut Tape and Digi-Reel format with significantly higher inventory availability (90,400 units vs. 893 units for the obsolete TL071CDRE4).

Secondary Substitutes: TL071CDT and TL071ACDT

The TL071CDT and TL071ACDT are active alternatives manufactured by STMicroelectronics. Both offer improved electrical performance compared to the TL071CDRE4: slew rate increased to 16 V/µs, input bias current reduced to 20 pA, and expanded supply voltage range (6V to 36V). These parts maintain the same 8-SOIC package and surface mount configuration. The TL071ACDT supports extended supply voltage to 36V, while TL071CDT supports 36V maximum. Both are ROHS3 compliant with MSL Level 1. Operating temperature range remains 0°C to 70°C, matching the original specification.

Extended Temperature Alternative: TL071IDT

The TL071IDT provides identical electrical performance to TL071CDT and TL071ACDT but extends the operating temperature range to -40°C to 105°C. This part is suitable for applications requiring wider temperature operation. All other parameters remain compatible with the TL071CDRE4 requirements.

Cross-Family Alternatives: TL081CDT and TL081IDT

The TL081CDT and TL081IDT represent the TL081 family variant with equivalent electrical specifications to the TL071 series substitutes. These parts offer identical performance parameters and package configuration. The TL081IDT extends operating temperature to -40°C to 105°C. Selection between TL071 and TL081 variants depends on design-specific requirements; both families are electrically compatible for the specified application parameters.

LF351DT Consideration

The LF351DT from STMicroelectronics is an active J-FET amplifier in 8-SOIC package. While it meets the core substitution criteria (J-FET type, 1 circuit, 8-SOIC package, ROHS3 compliant, MSL Level 1), it exhibits reduced gain bandwidth product (4 MHz vs. 5.25 MHz) and lower input bias current (20 pA vs. 65 pA). The supply voltage range is broader (6V to 32V). This part is suitable only for applications where the lower bandwidth specification does not impact circuit performance.

All substitute parts maintain ROHS3 compliance and MSL Level 1 moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can TL071CDR directly replace TL071CDRE4 without circuit modification?

A: Yes. The TL071CDR is electrically and mechanically identical to TL071CDRE4. Both share the same 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), and supply voltage range (10V to 30V). The 8-SOIC package and surface mount configuration are identical. No circuit modification is required.

Q: What is the difference between TL071CDT and TL071ACDT?

A: Both parts are manufactured by STMicroelectronics and share identical electrical specifications. The primary difference is maximum supply voltage: TL071ACDT supports 36V maximum, while TL071CDT also supports 36V maximum. Both operate at 0°C to 70°C. Selection between these parts depends on packaging format availability and inventory requirements.

Q: Why does LF351DT have lower gain bandwidth product than TL071CDRE4?

A: The LF351DT is specified with 4 MHz gain bandwidth product compared to 5.25 MHz for TL071CDRE4. This represents a different design optimization within the J-FET amplifier family. The LF351DT compensates with lower input bias current (20 pA vs. 65 pA). Substitution is valid only if the application does not require the higher bandwidth specification.

Q: Are TL071IDT and TL081IDT interchangeable?

A: Yes, for the specified electrical parameters. Both parts offer identical slew rate (16 V/µs), gain bandwidth product (4 MHz), input bias current (20 pA), input offset voltage (3 mV), supply current (1.4 mA), supply voltage range (6V to 36V), and extended operating temperature (-40°C to 105°C). Both are packaged in 8-SOIC surface mount configuration. The TL071 and TL081 designations represent different product lines within the same family with compatible specifications.

Q: What is the significance of MSL Level 1 rating?

A: MSL (Moisture Sensitivity Level) Level 1 indicates unlimited shelf life without moisture control requirements. All substitute parts listed maintain MSL Level 1, ensuring compatibility with standard storage and handling procedures without special desiccant packaging or baking requirements prior to assembly.

Q: Can I use TL071CDT in an application originally designed for TL071CDRE4?

A: Yes, with consideration of performance improvements. The TL071CDT offers enhanced specifications: slew rate increased from 13 V/µs to 16 V/µs, input bias current reduced from 65 pA to 20 pA, and supply voltage range expanded from 10-30V to 6-36V. These improvements are backward compatible. The 8-SOIC package and surface mount configuration are identical. No circuit modification is required.

Q: What is the inventory status of substitute parts?

A: TL071CDR (90,400 units), TL071CDT (6,375 units), TL071IDT (17,800 units), TL081CDT (3,600 units), and TL081IDT (1,900 units) are all in active production with current inventory. LF351DT (17,545 units) and LF351D (1,159 units) are also available. The original TL071CDRE4 (893 units) is obsolete with limited remaining stock.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed—TL071CDR, LF351D, LF351DT, TL071ACDT, TL071CDT, TL071IDT, TL081CDT, and TL081IDT—are ROHS3 compliant with MSL Level 1 rating. All parts are REACH unaffected and classified as EAR99 for export control purposes.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message