TL072CDRG4 Equivalent & Substitute Parts

Part Overview

The TL072CDRG4 is a J-FET input operational amplifier featuring two independent circuits in an 8-SOIC surface mount package. Manufactured by Texas Instruments, this device is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design requirements and production continuity. The TL072CDRG4 delivers low input bias current, moderate slew rate, and operates across a 10V to 30V supply span, making it suitable for precision analog signal processing applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	TL072CDRG4
Manufacturer	Texas Instruments
Product Status	Obsolete
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	3 mV
Current - Supply	1.4 mA (x2 Channels)
Voltage - Supply Span (Min)	10 V
Voltage - Supply Span (Max)	30 V
Operating Temperature	0°C ~ 70°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TL072CDRG4 is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Critical Matching Parameters:

Amplifier Type: J-FET input architecture
Number of Circuits: 2 independent operational amplifiers
Package / Case: 8-SOIC form factor (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Voltage - Supply Span: Minimum 10V to Maximum 30V compatibility
Operating Temperature Range: 0°C ~ 70°C minimum coverage

Secondary Compatibility Parameters:

Slew Rate: 13 V/µs or greater
Gain Bandwidth Product: 5.25 MHz or greater
Current - Input Bias: 65 pA or lower
Voltage - Input Offset: 3 mV or lower
Current - Supply: 1.4 mA per channel or lower

Substitute parts are grouped into two categories:

Category 1: Direct J-FET Equivalents (Highest Compatibility) Parts maintaining J-FET amplifier topology with identical or superior electrical performance and active product status. These include TL072CDR, TL072CDT, TL072IDT, TL072ACDT, TL072BIDT, and TL072BIYDT.

Category 2: Alternative Amplifier Types (Conditional Substitution) Parts with different amplifier topologies (General Purpose or Audio) that meet the mechanical package requirements and supply voltage specifications. These include MC33172D, MC33172DT, and LM833DT. These substitutes require application-level verification due to differing input bias current and offset voltage characteristics.

Parameter Comparison

Parameter	TL072CDRG4	TL072CDR	TL072CDT	TL072IDT	TL072ACDT	TL072BIDT	TL072BIYDT	TL082ACDT	MC33172D	MC33172DT	LM833DT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Product Status	Obsolete	Active	Active	Active	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	General Purpose	General Purpose	Audio
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	13	13	16	16	16	16	16	16	2	2	7
Gain Bandwidth Product (MHz)	5.25	5.25	4	4	4	4	4	4	2.1	2.1	15
Current - Input Bias (pA)	65	65	20	20	20	20	20	20	20	20	300
Voltage - Input Offset (mV)	3	3	3	3	3	1	1	3	1	1	0.3
Current - Supply (mA)	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	0.22	0.22	4
Voltage - Supply Span Min (V)	10	10	6	6	6	6	6	6	4	4	5
Voltage - Supply Span Max (V)	30	30	36	36	36	36	36	36	44	44	30
Operating Temperature (°C)	0 ~ 70	0 ~ 70	0 ~ 70	-40 ~ 125	0 ~ 70	-40 ~ 125	-40 ~ 125	0 ~ 70	-40 ~ 105	-40 ~ 105	-40 ~ 105
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SO	8-SOIC	8-SOIC	8-SO
Mounting Type	Surface Mount	Surface Mount	Surface Mount	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	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The TL072CDR, TL072CDT, and TL072IDT represent the most direct substitutes for the obsolete TL072CDRG4. All three maintain identical J-FET amplifier topology, dual-circuit configuration, and 8-SOIC package format. TL072CDR and TL072CDT operate within the original 0°C to 70°C temperature range with matching electrical specifications. TL072IDT extends the operating temperature range to -40°C to 125°C, providing enhanced thermal performance for demanding applications. All three are active products with substantial inventory availability.

Extended Temperature Range Alternatives:

TL072BIDT and TL072BIYDT provide J-FET amplifier performance with extended operating temperature range (-40°C to 125°C) and automotive-grade qualification (AEC-Q100). These parts feature improved input offset voltage (1 mV versus 3 mV) and maintain identical supply current specifications. TL072ACDT offers automotive qualification with standard temperature range (0°C to 70°C).

Alternative Amplifier Topology Substitutes:

MC33172D and MC33172DT are general-purpose operational amplifiers with dual circuits in 8-SOIC packages. These parts operate across a wider supply voltage range (4V to 44V) and extended temperature range (-40°C to 105°C). However, they exhibit significantly lower slew rate (2 V/µs versus 13 V/µs) and gain bandwidth product (2.1 MHz versus 5.25 MHz), making them suitable only for applications where these performance parameters are not critical.

LM833DT is an audio amplifier with dual circuits in 8-SO package. It provides higher gain bandwidth product (15 MHz) and lower input offset voltage (300 µV) but exhibits substantially higher input bias current (300 nA versus 65 pA) and increased supply current (4 mA versus 1.4 mA). This substitute is appropriate for audio-specific applications where low input bias current is not a design requirement.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original device specifications. Automotive-qualified variants (TL072ACDT, TL072BIDT, TL072BIYDT, TL082ACDT) carry AEC-Q100 certification for applications requiring automotive-grade reliability.

Frequently Asked Questions (FAQ)

Q: Can TL072CDT be used as a direct replacement for TL072CDRG4?

A: Yes. TL072CDT is a direct J-FET equivalent with identical electrical specifications (13 V/µs slew rate, 5.25 MHz gain bandwidth product, 65 pA input bias current) and matching 8-SOIC package. The primary difference is the extended supply voltage range (6V to 36V versus 10V to 30V) and automotive qualification, both of which provide enhanced capability. Pinout and functional operation are identical.

Q: What is the difference between TL072CDT and TL072IDT?

A: Both parts are J-FET dual operational amplifiers in 8-SOIC packages with identical electrical performance. The primary distinction is operating temperature range: TL072CDT operates 0°C to 70°C, while TL072IDT operates -40°C to 125°C. TL072IDT is suitable for applications requiring extended temperature performance or automotive environments. Both carry AEC-Q100 automotive qualification.

Q: Why do TL072BIDT and TL072BIYDT show lower input offset voltage (1 mV) compared to the original TL072CDRG4 (3 mV)?

A: The lower input offset voltage represents improved device performance within the TL072 family. This is a beneficial characteristic that enhances precision in analog signal processing. The parts remain functionally compatible with designs specified for the original 3 mV offset voltage, as the lower value is within the acceptable tolerance band.

Q: Can MC33172D replace TL072CDRG4 in all applications?

A: MC33172D is not a universal replacement. While it provides dual operational amplifiers in an 8-SOIC package with ROHS3 compliance, it uses general-purpose amplifier topology rather than J-FET input architecture. The significantly lower slew rate (2 V/µs versus 13 V/µs) and gain bandwidth product (2.1 MHz versus 5.25 MHz) make it unsuitable for applications requiring high-speed signal processing. Additionally, the higher input bias current (20 nA versus 65 pA) may introduce unacceptable errors in precision measurement circuits. Substitution requires application-level analysis.

Q: What is the difference between 8-SOIC and 8-SO package designations?

A: Both designations refer to 8-pin small-outline integrated circuit packages with 0.154" (3.90mm) width. The designations are functionally equivalent for PCB layout and assembly purposes. Parts specified as 8-SO (such as TL082ACDT and LM833DT) are mechanically and electrically compatible with 8-SOIC footprints.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original TL072CDRG4 specifications. This ensures compatibility with modern manufacturing and environmental regulations.

Q: Which substitute offers the widest supply voltage range?

A: MC33172D and MC33172DT provide the widest supply voltage range (4V to 44V), compared to the original TL072CDRG4 (10V to 30V). However, this extended range comes with trade-offs in slew rate and gain bandwidth product performance. For applications requiring both wide supply voltage range and high-speed performance, TL072CDT or TL072IDT with their 6V to 36V range represent a balanced alternative.

Q: What inventory considerations should guide substitute selection?

A: TL072CDT offers the highest inventory availability (203,200 pieces), followed by TL072IDT (55,200 pieces) and TL072CDR (295,417 pieces). For applications requiring immediate availability and long-term supply security, TL072CDT is the recommended primary substitute. MC33172D (100,400 pieces) and MC33172DT (45,300 pieces) provide alternative topology options with substantial inventory support.

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