TL072BCDG4 Equivalent & Substitute Parts

Part Overview

The TL072BCDG4 is a J-FET input operational amplifier manufactured by Texas Instruments, configured as a dual-channel (2 circuit) device in an 8-SOIC surface mount package. This part is classified as obsolete, though 987 pieces remain available in new original stock. The TL072BCDG4 is designed for applications requiring low input bias current and low input offset voltage characteristics typical of J-FET amplifier topologies. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity and long-term component availability.

Key Parameters

Parameter	Value
Amplifier Type	J-FET
Number of Circuits	2
Slew Rate	13 V/µs
Gain Bandwidth Product	5.25 MHz
Current - Input Bias	65 pA
Voltage - Input Offset	2 mV
Current - Supply	1.4 mA (x2 Channels)
Voltage - Supply Span	10 V to 30 V
Operating Temperature	0°C to 70°C
Package / Case	8-SOIC (0.154", 3.90 mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the TL072BCDG4 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: J-FET (low input bias current requirement)
Number of Circuits: 2 (dual-channel configuration)
Package / Case: 8-SOIC form factor (mechanical and electrical compatibility)
Mounting Type: Surface Mount (PCB assembly compatibility)

Secondary Compatibility Parameters:

Slew Rate: 13 V/µs or higher (signal fidelity preservation)
Gain Bandwidth Product: 5.25 MHz or higher (frequency response capability)
Current - Input Bias: 65 pA or lower (input impedance characteristics)
Voltage - Input Offset: 2 mV or lower (DC accuracy)
Voltage - Supply Span: Minimum 10 V, Maximum 30 V (power supply compatibility)

Substitute parts are grouped into two categories: Direct Equivalents (identical or superior specifications within the same product line) and Functional Alternatives (different amplifier topologies or manufacturers meeting the core electrical requirements within the 8-SOIC package).

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Circuits	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV)	Supply Span (V)	Temp Range (°C)	Status
TL072BCDG4	Texas Instruments	J-FET	2	13	5.25	65	2	10–30	0–70	Obsolete
TL072BCD	Texas Instruments	J-FET	2	13	5.25	65	2	10–30	0–70	Obsolete
TL072BCDR	Texas Instruments	J-FET	2	13	5.25	65	2	10–30	0–70	Active
AD8682ARZ	Analog Devices Inc.	J-FET	2	9	3.5	6	0.35	9–36	−40–85	Active
AD8682ARZ-REEL	Analog Devices Inc.	J-FET	2	9	3.5	6	0.35	9–36	−40–85	Active
AD8682ARZ-REEL7	Analog Devices Inc.	J-FET	2	9	3.5	6	0.35	9–36	−40–85	Active
OP282GSZ-REEL	Analog Devices Inc.	J-FET	2	9	4	3	0.2	9–36	−40–85	Active
LM833DT	STMicroelectronics	Audio	2	7	15	300	0.3	5–30	−40–105	Active
MC34072ADR2G	onsemi	General Purpose	2	13	4.5	100	0.5	3–44	0–70	Active
SSM2135SZ	Analog Devices Inc.	Audio	2	0.9	3.5	300	0.2	4–36	−40–85	Active
LT1352IS8#TR	Analog Devices Inc.	Voltage Feedback	2	200	3	20	0.2	5–30	−40–85	Active

Engineering Selection Recommendations

Tier 1: Direct Equivalents (Recommended for Pin-Compatible Replacement)

TL072BCDR (Texas Instruments) is the primary recommended substitute. This part maintains identical electrical specifications to the TL072BCDG4 (J-FET amplifier type, 13 V/µs slew rate, 5.25 MHz gain bandwidth product, 65 pA input bias current, 2 mV input offset voltage, 10–30 V supply span, 0–70°C operating temperature) while offering active product status and significantly higher inventory availability (7,194 pieces). The only difference is packaging format (Cut Tape & Digi-Reel versus the original SOIC tube packaging), which does not affect electrical performance or PCB assembly compatibility.

TL072BCD (Texas Instruments) provides identical specifications but remains classified as obsolete with lower inventory (1,500 pieces). This option is suitable only when TL072BCDR is unavailable.

Tier 2: J-FET Alternatives with Enhanced Performance (Extended Temperature Range)

AD8682ARZ, AD8682ARZ-REEL, and AD8682ARZ-REEL7 (Analog Devices Inc.) are J-FET amplifiers in 8-SOIC packages with superior input bias current (6 pA versus 65 pA) and input offset voltage (350 µV versus 2 mV). These parts support extended operating temperature range (−40°C to 85°C versus 0–70°C) and wider supply voltage span (9–36 V versus 10–30 V). Trade-offs include lower slew rate (9 V/µs versus 13 V/µs) and lower gain bandwidth product (3.5 MHz versus 5.25 MHz). These substitutes are suitable for applications prioritizing low input bias current and extended temperature operation over high-speed performance.

OP282GSZ-REEL (Analog Devices Inc.) is a J-FET amplifier offering the lowest input bias current (3 pA) and lowest input offset voltage (200 µV) among J-FET options, with active status and high inventory (18,270 pieces). Slew rate (9 V/µs) and gain bandwidth product (4 MHz) are lower than the TL072BCDG4. This part is optimal for precision, low-noise applications where input bias current minimization is critical.

Tier 3: Non-J-FET Alternatives (Functional Substitutes for Specific Applications)

MC34072ADR2G (onsemi) is a general-purpose dual amplifier with identical slew rate (13 V/µs) and similar gain bandwidth product (4.5 MHz). Input bias current (100 nA) and input offset voltage (500 µV) are significantly higher than the TL072BCDG4, making this option unsuitable for applications requiring ultra-low input bias current. However, it offers the widest supply voltage range (3–44 V) and active status with good inventory (2,166 pieces). This substitute is applicable only when J-FET input characteristics are not essential.

LM833DT (STMicroelectronics) is an audio amplifier with superior gain bandwidth product (15 MHz) and extended operating temperature (−40°C to 105°C). Input bias current (300 nA) and input offset voltage (300 µV) are substantially higher. This part is suitable for audio-specific applications where high bandwidth and wide temperature operation are prioritized.

SSM2135SZ (Analog Devices Inc.) is an audio amplifier with low input offset voltage (200 µV) but very low slew rate (0.9 V/µs) and high input bias current (300 nA). This part is restricted to low-frequency audio applications and is not recommended for general-purpose signal conditioning.

LT1352IS8#TR (Analog Devices Inc.) is a voltage feedback amplifier with exceptionally high slew rate (200 V/µs) and extended temperature range (−40°C to 85°C). Input bias current (20 nA) is moderate. This part is suitable only for high-speed applications where the TL072BCDG4's slew rate is insufficient.

Compliance and Certification:

All recommended substitute parts maintain ROHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), and REACH unaffected status, matching the TL072BCDG4 environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q1: Can I directly replace TL072BCDG4 with TL072BCDR without circuit modification?

A: Yes. TL072BCDR is electrically identical to TL072BCDG4 across all specified parameters (J-FET amplifier type, dual-channel configuration, 13 V/µs slew rate, 5.25 MHz gain bandwidth product, 65 pA input bias current, 2 mV input offset voltage, 10–30 V supply span, 0–70°C operating temperature). Both use the 8-SOIC package with identical pinout and electrical characteristics. The only difference is packaging format (Cut Tape & Digi-Reel versus tube), which does not affect circuit performance or PCB assembly compatibility.

Q2: Why do AD8682ARZ variants show lower slew rate and gain bandwidth product than TL072BCDG4?

A: The AD8682ARZ series prioritizes ultra-low input bias current (6 pA versus 65 pA) and input offset voltage (350 µV versus 2 mV) at the expense of slew rate (9 V/µs versus 13 V/µs) and gain bandwidth product (3.5 MHz versus 5.25 MHz). This represents a different design trade-off optimized for precision, low-noise applications. Selection depends on whether your circuit requires high-speed performance or ultra-low input bias current.

Q3: Is OP282GSZ-REEL a suitable replacement for the TL072BCDG4?

A: OP282GSZ-REEL is a J-FET amplifier in the same 8-SOIC package with superior input bias current (3 pA) and input offset voltage (200 µV). However, slew rate (9 V/µs) and gain bandwidth product (4 MHz) are lower than the TL072BCDG4. This substitute is appropriate for precision applications where minimizing input bias current is the primary objective. If your circuit requires the full 13 V/µs slew rate or 5.25 MHz bandwidth, OP282GSZ-REEL may not be suitable.

Q4: Can I use MC34072ADR2G as a drop-in replacement?

A: MC34072ADR2G is not recommended as a direct replacement. While it matches the slew rate (13 V/µs) and operates in the same 8-SOIC package, it is a general-purpose amplifier, not a J-FET amplifier. Input bias current (100 nA) is approximately 1,500 times higher than the TL072BCDG4 (65 pA), and input offset voltage (500 µV) is 250 times higher. This substitute is only acceptable if your circuit does not depend on J-FET input characteristics (low input bias current and low input offset voltage).

Q5: What is the difference between AD8682ARZ, AD8682ARZ-REEL, and AD8682ARZ-REEL7?

A: All three variants are electrically identical J-FET amplifiers with the same specifications (9 V/µs slew rate, 3.5 MHz gain bandwidth product, 6 pA input bias current, 350 µV input offset voltage, 9–36 V supply span, −40–85°C operating temperature). The differences are packaging and tape format: AD8682ARZ is supplied in tube packaging, AD8682ARZ-REEL is supplied on cut tape with digi-reel, and AD8682ARZ-REEL7 is supplied on standard tape and reel. Selection depends on your assembly process requirements. All three are functionally equivalent for circuit design purposes.

Q6: Why is LM833DT listed as a substitute if it is an audio amplifier, not a J-FET amplifier?

A: LM833DT is included as a functional alternative for applications where audio-specific performance characteristics are acceptable. It offers superior gain bandwidth product (15 MHz) and extended operating temperature (−40°C to 105°C). However, input bias current (300 nA) and input offset voltage (300 µV) are substantially higher than the TL072BCDG4. This substitute is only appropriate for audio signal conditioning applications where J-FET input characteristics are not required.

Q7: Is the 8-SOIC package identical across all substitute parts?

A: Yes. All substitute parts listed use the 8-SOIC package with 0.154" (3.90 mm) width, ensuring mechanical and electrical compatibility with PCB layouts designed for the TL072BCDG4. Pin assignments and package dimensions are standardized across all listed alternatives, allowing direct PCB footprint compatibility.

Q8: Which substitute offers the best long-term availability?

A: OP282GSZ-REEL (Analog Devices Inc.) offers the highest current inventory (18,270 pieces) and active product status, making it the most reliable choice for long-term component sourcing. TL072BCDR (Texas Instruments) is the second-best option with 7,194 pieces in stock and active status. Both parts are suitable for immediate and future procurement.

Q9: Can I use LT1352IS8#TR if my circuit requires very high slew rate?

A: LT1352IS8#TR is a voltage feedback amplifier with exceptional slew rate (200 V/µs), significantly exceeding the TL072BCDG4 (13 V/µs). However, this part is a voltage feedback topology, not a J-FET amplifier, resulting in higher input bias current (20 nA) and different input impedance characteristics. This substitute is only suitable if your circuit specifically requires high slew rate and can tolerate voltage feedback amplifier topology and input bias current specifications.

Q10: What compliance certifications do all substitute parts maintain?

A: All substitute parts listed maintain ROHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), REACH unaffected status, and EAR99 export classification, matching the TL072BCDG4 environmental and regulatory requirements. This ensures compatibility with modern manufacturing standards and regulatory frameworks.

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