TL082BCDRG4 Equivalent & Substitute Parts

Part Overview

The TL082BCDRG4 is a J-FET input operational amplifier featuring dual circuits in an 8-SOIC surface mount package, manufactured by Texas Instruments. This device is designed for general-purpose amplification applications requiring low input bias current and low input offset voltage characteristics. The TL082BCDRG4 is currently discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain functional compatibility while meeting application requirements. Substitute parts must preserve the dual-circuit configuration, 8-SOIC package format, and core electrical performance parameters to ensure direct replacement capability.

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	2	mV
Current - Supply	1.4 (x2 Channels)	mA
Current - Output / Channel	10	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

Substitute parts for the TL082BCDRG4 are evaluated based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

Amplifier Type (J-FET input architecture)
Number of Circuits (dual configuration)
Package / Case (8-SOIC form factor)
Mounting Type (Surface Mount)
Slew Rate (13 V/µs minimum)
Gain Bandwidth Product (3 MHz minimum)
Input Bias Current (30 pA maximum)
Input Offset Voltage (2 mV maximum)
Supply Voltage Range (10 V to 30 V minimum span)
Output Current per Channel (10 mA minimum)

Substitutes are grouped into two categories:

Category 1: Direct J-FET Substitutes — Parts maintaining identical amplifier type (J-FET), dual circuits, and 8-SOIC packaging with equivalent or superior electrical performance within the specified supply voltage range.

Category 2: Functional Alternatives — Parts with different amplifier types (General Purpose or Audio) that maintain dual circuits, 8-SOIC packaging, and compatible electrical performance for applications where J-FET input characteristics are not mandatory.

Parts failing to meet the 8-SOIC package requirement, dual-circuit configuration, or minimum electrical performance thresholds are excluded from substitution consideration.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV)	Supply Min (V)	Supply Max (V)	Output Current (mA)	Product Status
TL082BCDRG4	Texas Instruments	J-FET	13	3	30	2	10	30	10	Discontinued
TL082BCDR	Texas Instruments	J-FET	13	3	30	2	10	30	10	Active
TL082CMX/NOPB	Texas Instruments	J-FET	13	4	50	5	36	36	17	Active
TL072BIYDT	STMicroelectronics	J-FET	16	4	20	1	6	36	40	Active
TL072CDT	STMicroelectronics	J-FET	16	4	20	3	6	36	40	Active
MC33072DR2G	onsemi	General Purpose	13	4.5	100	1	3	44	30	Active
AS358AMTR-E1	Diodes Incorporated	General Purpose	—	—	20000	2	3	36	40	Active
LM833DT	STMicroelectronics	Audio	7	15	300000	0.3	5	30	37	Active
SSM2135SZ	Analog Devices Inc.	Audio	0.9	3.5	300000	0.2	4	36	30	Active
SSM2135SZ-REEL	Analog Devices Inc.	Audio	0.9	3.5	300000	0.2	4	36	30	Active
SSM2135SZ-REEL7	Analog Devices Inc.	Audio	0.9	3.5	300000	0.2	4	36	30	Active

Engineering Selection Recommendations

Primary Substitute: TL082BCDR

The TL082BCDR is the direct equivalent to the TL082BCDRG4, manufactured by Texas Instruments. This part maintains identical electrical specifications across all critical parameters: J-FET amplifier type, dual circuits, 13 V/µs slew rate, 3 MHz gain bandwidth product, 30 pA input bias current, and 2 mV input offset voltage. The supply voltage range (10 V to 30 V) and output current capability (10 mA per channel) are identical. The TL082BCDR is currently in active production status with 6435 units in stock. This part is available in Cut Tape and Digi-Reel packaging formats. RoHS3 compliance and MSL 1 rating match the original specification. Selection of TL082BCDR eliminates any functional or electrical deviation from the original design.

Secondary Substitute: TL072BIYDT

The TL072BIYDT, manufactured by STMicroelectronics, is a J-FET dual operational amplifier in 8-SOIC packaging. This part exceeds the original specification in slew rate (16 V/µs versus 13 V/µs) and gain bandwidth product (4 MHz versus 3 MHz). Input bias current is superior at 20 pA (versus 30 pA), and input offset voltage is lower at 1 mV (versus 2 mV). Output current per channel is 40 mA, exceeding the 10 mA requirement. The supply voltage range extends from 6 V to 36 V, providing broader compatibility than the original 10 V to 30 V range. The TL072BIYDT carries AEC-Q100 automotive qualification and operates across -40°C to 125°C, exceeding the original 0°C to 70°C range. This part is in active production with 3600 units in stock. RoHS3 compliance and MSL 1 rating are maintained.

Tertiary Substitute: TL072CDT

The TL072CDT, also manufactured by STMicroelectronics, provides J-FET dual amplification in 8-SOIC packaging with performance characteristics similar to TL072BIYDT. Slew rate is 16 V/µs and gain bandwidth product is 4 MHz. Input bias current is 20 pA and input offset voltage is 3 mV. Output current per channel is 40 mA. Supply voltage range is 6 V to 36 V. Operating temperature range is 0°C to 70°C, matching the original specification. This part carries AEC-Q100 automotive qualification. TL072CDT is in active production with 203200 units in stock, providing excellent availability. RoHS3 compliance and MSL 1 rating are confirmed.

Alternative Substitute: MC33072DR2G

The MC33072DR2G, manufactured by onsemi, is a general-purpose dual operational amplifier in 8-SOIC packaging. While amplifier type differs from the J-FET architecture of the original part, this device maintains dual circuits and 8-SOIC form factor. Slew rate is 13 V/µs, matching the original specification. Gain bandwidth product is 4.5 MHz, exceeding the 3 MHz requirement. Input bias current is 100 nA, which is significantly higher than the original 30 pA specification. Input offset voltage is 1 mV, superior to the original 2 mV. Supply voltage range is 3 V to 44 V, providing broader compatibility. Output current per channel is 30 mA, exceeding the 10 mA requirement. This part is in active production with 15800 units in stock. RoHS3 compliance and MSL 1 rating are maintained. Selection of MC33072DR2G is appropriate for applications where J-FET input characteristics are not critical and where the higher input bias current is acceptable.

All substitute parts listed maintain RoHS3 compliance, MSL 1 moisture sensitivity rating, and 8-SOIC surface mount packaging. All parts are currently in active production status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can TL082BCDR be used as a direct replacement for TL082BCDRG4?

A: Yes. TL082BCDR is the direct equivalent to TL082BCDRG4. Both parts are manufactured by Texas Instruments and share identical electrical specifications, including J-FET amplifier type, dual circuits, 13 V/µs slew rate, 3 MHz gain bandwidth product, 30 pA input bias current, 2 mV input offset voltage, and 10 V to 30 V supply voltage range. The primary difference is packaging format: TL082BCDR is available in Cut Tape and Digi-Reel formats, while TL082BCDRG4 was supplied in Digi-Reel format. Both use 8-SOIC surface mount packaging. No circuit modifications are required.

Q: What is the difference between J-FET and General Purpose amplifier types?

A: J-FET input amplifiers feature junction field-effect transistor input stages, resulting in extremely low input bias current (typically in the picoampere range) and high input impedance. General Purpose amplifiers typically use bipolar input stages, resulting in higher input bias current (typically in the nanoampere range) but lower cost and simpler design. For applications requiring high input impedance or minimal input bias current, J-FET types are preferred. For general signal conditioning applications where input bias current is not critical, General Purpose types are acceptable.

Q: Is the TL072BIYDT compatible with the TL082BCDRG4 in all applications?

A: TL072BIYDT is compatible with TL082BCDRG4 in most applications. Both are J-FET dual operational amplifiers in 8-SOIC packaging. TL072BIYDT exceeds the original specification in slew rate (16 V/µs versus 13 V/µs), gain bandwidth product (4 MHz versus 3 MHz), and output current capability (40 mA versus 10 mA per channel). Input bias current is superior (20 pA versus 30 pA). The supply voltage range is broader (6 V to 36 V versus 10 V to 30 V). Operating temperature range extends to -40°C to 125°C. These improvements ensure compatibility in applications designed for TL082BCDRG4. No circuit modifications are required.

Q: Can MC33072DR2G replace TL082BCDRG4 in audio applications?

A: MC33072DR2G can replace TL082BCDRG4 in many audio applications, but with important considerations. MC33072DR2G is a General Purpose amplifier, not a J-FET type, resulting in higher input bias current (100 nA versus 30 pA). This difference is acceptable in applications where input impedance is not critical or where input bias current compensation is not required. MC33072DR2G maintains dual circuits, 8-SOIC packaging, and compatible supply voltage range (3 V to 44 V). Slew rate is identical at 13 V/µs. Output current capability is superior at 30 mA per channel. For audio applications requiring extremely low input bias current or high input impedance, J-FET types (TL072BIYDT or TL072CDT) are preferred.

Q: What is the significance of AEC-Q100 qualification on TL072BIYDT and TL072CDT?

A: AEC-Q100 qualification indicates that the part meets automotive industry reliability and quality standards established by the Automotive Electronics Council. Parts carrying AEC-Q100 qualification have undergone rigorous testing for temperature cycling, humidity resistance, electrostatic discharge, and other environmental stresses. For applications in automotive or harsh industrial environments, AEC-Q100 qualified parts provide enhanced reliability assurance. For general commercial applications, AEC-Q100 qualification is not required but provides additional confidence in part quality and longevity.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain RoHS3 compliance, confirming that hazardous substances (lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, and polybrominated diphenyl ethers) are restricted to specified maximum concentrations. RoHS3 compliance ensures compatibility with environmental regulations in the European Union and other regions adopting equivalent standards. All parts also maintain MSL 1 (Unlimited) moisture sensitivity level, indicating no special moisture protection requirements during storage or handling.

Q: What packaging format differences exist among substitute parts?

A: Substitute parts are available in three packaging formats: Cut Tape (CT), Digi-Reel (DR), and Tape & Reel (TR). Cut Tape format is suitable for small-quantity manual assembly or prototyping. Digi-Reel format provides tape-and-reel packaging optimized for automated pick-and-place equipment with standard reel dimensions. Tape & Reel format is standard for high-volume production assembly. All substitute parts use identical 8-SOIC (0.154", 3.90mm Width) surface mount package dimensions, ensuring mechanical compatibility regardless of packaging format. Selection of packaging format depends on assembly process requirements and production volume, not on electrical compatibility.

Q: Can SSM2135SZ variants be used in place of TL082BCDRG4?

A: SSM2135SZ variants are Audio amplifiers, not J-FET types, and are not recommended as direct replacements for TL082BCDRG4 in general-purpose applications. SSM2135SZ maintains dual circuits and 8-SOIC packaging but features significantly different electrical characteristics: input bias current is 300 nanoamperes (versus 30 picoamperes for TL082BCDRG4), slew rate is 0.9 V/µs (versus 13 V/µs), and gain bandwidth product is 3.5 MHz. These characteristics are optimized for audio signal conditioning, not general-purpose amplification. SSM2135SZ is appropriate only for audio applications where its specific performance profile is advantageous. For general-purpose applications, J-FET substitutes (TL072BIYDT, TL072CDT) or General Purpose substitutes (MC33072DR2G) are more suitable.

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