TL082IDRE4 Equivalent & Substitute Parts

Part Overview

The TL082IDRE4 is a J-FET input operational amplifier featuring dual circuits in an 8-SOIC surface mount package, manufactured by Texas Instruments. This device is classified as obsolete but remains in stock with 831 units available. The TL082IDRE4 is designed for applications requiring low input bias current, moderate slew rate, and stable operation across industrial temperature ranges. 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	2	—
Slew Rate	13	V/µs
Gain Bandwidth Product	3	MHz
Current - Input Bias	30	pA
Voltage - Input Offset	3	mV
Current - Supply (x2 Channels)	1.4	mA
Current - Output / Channel	10	mA
Voltage - Supply Span (Min)	10	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	-40 to 85	°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 TL082IDRE4 is determined by the following critical parameters: amplifier type (J-FET vs. general purpose), number of circuits (dual), package format (8-SOIC surface mount), supply voltage range, input bias current characteristics, and operating temperature range. The substitute parts are grouped into two categories:

Category 1: Direct J-FET Equivalents These parts maintain J-FET amplifier topology and are suitable for applications requiring the specific input impedance and bias current characteristics of J-FET designs. Parts in this category include TL082IDR, TL082BCD, TL082CMX/NOPB, and TL072CDT. These devices preserve the core J-FET architecture while offering active product status or improved specifications.

Category 2: General Purpose Alternatives These parts employ general purpose amplifier topologies and are applicable when J-FET characteristics are not mandatory. Parts in this category include AS358MTR-E1, LM258DR2G, MC33172D, MC33172DT, MC4558CDT, and LM833DT. These devices offer broader supply voltage ranges, lower supply current, or enhanced output drive capability, making them suitable for cost-sensitive or power-constrained applications.

Substitution logic is based strictly on matching the 8-SOIC package, dual-circuit configuration, surface mount technology, and compatibility within the specified supply voltage and temperature operating ranges.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA/nA)	Input Offset (mV/µV)	Supply Current (mA/µA)	Output Current (mA)	Supply Span Min (V)	Supply Span Max (V)	Temp Range (°C)	Status
TL082IDRE4	Texas Instruments	J-FET	13	3	30 pA	3	1.4	10	10	30	-40 to 85	Obsolete
TL082IDR	Texas Instruments	J-FET	13	3	30 pA	3	1.4	10	10	30	-40 to 85	Active
TL082BCD	Texas Instruments	J-FET	13	3	30 pA	2	1.4	10	10	30	0 to 70	Obsolete
TL082CMX/NOPB	Texas Instruments	J-FET	13	4	50 pA	5	3.6	17	36	36	0 to 70	Active
TL072CDT	STMicroelectronics	J-FET	16	4	20 pA	3	1.4	40	6	36	0 to 70	Active
AS358MTR-E1	Diodes Incorporated	General Purpose	—	—	20 nA	2	0.7	40	3	36	-40 to 85	Active
LM258DR2G	onsemi	General Purpose	—	1	45 nA	2	0.8	40	3	32	-25 to 85	Active
MC33172D	STMicroelectronics	General Purpose	2	2.1	20 nA	1	0.22	27	4	44	-40 to 105	Active
MC33172DT	STMicroelectronics	General Purpose	2	2.1	20 nA	1	0.22	27	4	44	-40 to 105	Active
MC4558CDT	STMicroelectronics	General Purpose	2.2	5.5	50 nA	1	2.3	20	4	40	0 to 70	Active
LM833DT	STMicroelectronics	Audio	7	15	300 nA	0.3	4	37	5	30	-40 to 105	Active

Engineering Selection Recommendations

For Direct Replacement (J-FET Topology Required):

TL082IDR is the primary recommended substitute. This part is manufactured by Texas Instruments, maintains identical electrical specifications to the TL082IDRE4, and carries active product status with substantial inventory (65,100 units). The TL082IDR is packaged in Cut Tape & Digi-Reel format and is fully compatible with existing designs without circuit modification.

TL072CDT is an alternative J-FET option from STMicroelectronics. This device offers improved slew rate (16 V/µs vs. 13 V/µs), lower input bias current (20 pA vs. 30 pA), and higher output current capability (40 mA vs. 10 mA). The TL072CDT operates across a wider supply voltage range (6 V to 36 V) and maintains active product status. However, the operating temperature range is limited to 0°C to 70°C, which may not suit applications requiring the full -40°C to 85°C range of the original part.

For General Purpose Applications:

MC33172D and MC33172DT are recommended for applications where J-FET input characteristics are not critical. Both parts are manufactured by STMicroelectronics and offer extended operating temperature range (-40°C to 105°C), superior supply voltage range (4 V to 44 V), and significantly lower supply current (220 µA vs. 1.4 mA). These parts carry active product status and ROHS3 compliance.

AS358MTR-E1 from Diodes Incorporated is suitable for cost-sensitive designs requiring low supply current (700 µA) and broad supply voltage compatibility (3 V to 36 V). This part maintains the -40°C to 85°C operating range of the original device.

LM258DR2G from onsemi offers a 1 MHz gain bandwidth product and is applicable for low-frequency signal processing applications. This part provides active product status and ROHS3 compliance.

All recommended substitutes are ROHS3 compliant, carry MSL rating of 1 (unlimited moisture sensitivity), and are packaged in 8-SOIC surface mount format compatible with existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can TL082IDR be used as a direct drop-in replacement for TL082IDRE4?

A: Yes. TL082IDR is electrically and mechanically identical to TL082IDRE4. Both devices feature J-FET input topology, identical slew rate (13 V/µs), gain bandwidth product (3 MHz), input bias current (30 pA), and operating temperature range (-40°C to 85°C). The primary difference is product status: TL082IDR is active with higher inventory availability (65,100 units), while TL082IDRE4 is obsolete. No circuit modifications are required.

Q: What is the difference between J-FET and general purpose amplifier substitutes?

A: J-FET amplifiers (TL082IDR, TL072CDT) feature extremely low input bias current (20-30 pA) and high input impedance, making them suitable for high-impedance signal sources and precision measurement circuits. General purpose amplifiers (AS358MTR-E1, LM258DR2G, MC33172D) employ bipolar input stages with higher input bias current (20-300 nA) but offer lower supply current, broader supply voltage ranges, and lower cost. Selection depends on whether the application requires J-FET input characteristics or can tolerate higher input bias current.

Q: Is TL072CDT compatible with the TL082IDRE4 in all applications?

A: TL072CDT is mechanically compatible (8-SOIC package) and functionally similar but has operational limitations. The TL072CDT operating temperature range is restricted to 0°C to 70°C, which excludes the -40°C to 85°C range of the original part. Applications requiring full industrial temperature range operation must use TL082IDR or other parts rated to -40°C to 85°C. TL072CDT is suitable for applications operating within 0°C to 70°C.

Q: Can MC33172D replace TL082IDRE4 in audio applications?

A: MC33172D is not recommended as a direct replacement for audio applications requiring J-FET input characteristics. While MC33172D offers superior supply voltage range (4 V to 44 V) and extended temperature range (-40°C to 105°C), it employs general purpose amplifier topology with significantly higher input bias current (20 nA vs. 30 pA) and lower slew rate (2 V/µs vs. 13 V/µs). For audio applications, TL072CDT is the preferred J-FET substitute.

Q: What packaging formats are available for substitute parts?

A: All substitute parts are available in 8-SOIC surface mount package format, matching the original TL082IDRE4 package. Packaging options vary by part number: TL082IDR is available in Cut Tape & Digi-Reel; TL082BCD in Tube; TL082CMX/NOPB in Tape & Reel; TL072CDT in Cut Tape & Digi-Reel; AS358MTR-E1 in Cut Tape & Digi-Reel; LM258DR2G in Cut Tape & Digi-Reel; MC33172D in Tube; MC33172DT in Cut Tape & Digi-Reel; MC4558CDT in Cut Tape & Digi-Reel; and LM833DT in Cut Tape & Digi-Reel. All parts are suitable for automated PCB assembly.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification. All parts also maintain MSL rating of 1 (unlimited moisture sensitivity), indicating no special moisture control requirements during storage and handling.

Q: Which substitute offers the lowest supply current?

A: MC33172D and MC33172DT offer the lowest supply current at 220 µA (total for dual channels), compared to 1.4 mA for the original TL082IDRE4. This represents an 86% reduction in supply current, making these parts suitable for battery-powered and low-power applications. AS358MTR-E1 offers 700 µA supply current, providing a middle ground between J-FET and ultra-low-power general purpose designs.

Q: What is the maximum supply voltage for each substitute?

A: Supply voltage maximums vary: TL082IDRE4 and TL082IDR support 30 V; TL082BCD supports 30 V; TL082CMX/NOPB supports 36 V; TL072CDT supports 36 V; AS358MTR-E1 supports 36 V; LM258DR2G supports 32 V; MC33172D and MC33172DT support 44 V; MC4558CDT supports 40 V; and LM833DT supports 30 V. Applications requiring supply voltages above 30 V should select MC33172D, MC33172DT, or MC4558CDT.

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