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TL072IDG4 Equivalent & Substitute Parts
Part Overview
The TL072IDG4 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, though 1044 pieces remain in new original stock. The TL072IDG4 serves applications requiring low input bias current and moderate bandwidth characteristics typical of J-FET amplifier designs. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity and procurement planning.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| 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 | -40 to 85 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| Product Status | Obsolete | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution of the TL072IDG4 is determined by the following critical parameters:
Package Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure direct PCB compatibility without layout modifications.
Amplifier Type & Circuit Count: The primary substitutes maintain J-FET amplifier topology with dual circuits (2 circuits per package) to preserve input impedance characteristics and bias current performance.
Electrical Operating Range: Supply voltage span compatibility (minimum 10V to maximum 30V for the main part) is essential. Substitute parts with extended supply ranges (such as 6V to 36V) remain compatible within the TL072IDG4 operating window.
Key Performance Metrics: Input bias current (65 pA for TL072IDG4), input offset voltage (3 mV), and slew rate (13 V/µs) define the performance envelope. Substitutes with equal or superior specifications in these parameters maintain functional equivalence.
Product Status & Availability: Active product status substitutes ensure long-term procurement viability. Obsolete substitutes are listed only when they provide direct electrical equivalence.
Compliance & Certifications: All listed substitutes maintain ROHS3 compliance and surface mount packaging. Automotive-grade variants (AEC-Q100 qualified) are identified separately for applications requiring automotive qualification.
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) | Temp Range (°C) | Status | AEC-Q100 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TL072IDG4 | Texas Instruments | J-FET | 13 | 5.25 | 65 | 3 | 10 | 30 | -40 to 85 | Obsolete | — |
| TL072IDR | Texas Instruments | J-FET | 13 | 5.25 | 65 | 3 | 10 | 30 | -40 to 85 | Active | — |
| TL072ID | STMicroelectronics | J-FET | 16 | 3 | 20 | 3 | 6 | 36 | -40 to 125 | Obsolete | — |
| TL072IDT | STMicroelectronics | J-FET | 16 | 4 | 20 | 3 | 6 | 36 | -40 to 125 | Active | Yes |
| TL072CDT | STMicroelectronics | J-FET | 16 | 4 | 20 | 3 | 6 | 36 | 0 to 70 | Active | Yes |
| TL072ACDT | STMicroelectronics | J-FET | 16 | 4 | 20 | 3 | 6 | 36 | 0 to 70 | Active | Yes |
| TL072BIDT | STMicroelectronics | J-FET | 16 | 4 | 20 | 1 | 6 | 36 | -40 to 125 | Active | Yes |
| TL072BIYDT | STMicroelectronics | J-FET | 16 | 4 | 20 | 1 | 6 | 36 | -40 to 125 | Active | Yes |
| MC33172D | STMicroelectronics | General Purpose | 2 | 2.1 | 20000 | 1 | 4 | 44 | -40 to 105 | Active | — |
| MC33172DT | STMicroelectronics | General Purpose | 2 | 2.1 | 20000 | 1 | 4 | 44 | -40 to 105 | Active | — |
| LM833DT | STMicroelectronics | Audio | 7 | 15 | 300000 | 0.3 | 5 | 30 | -40 to 105 | Active | — |
Engineering Selection Recommendations
Direct Electrical Equivalence (Active Status):
The TL072IDR (Texas Instruments) provides direct electrical equivalence to the TL072IDG4 with identical performance specifications. Both devices feature 13 V/µs slew rate, 5.25 MHz gain bandwidth product, and 65 pA input bias current. The TL072IDR is active and available in high volume (35,200 pieces in stock), making it the primary recommendation for direct replacement in new designs or production continuity.
J-FET Amplifier Substitutes with Extended Operating Range (Active Status):
The TL072IDT, TL072CDT, TL072ACDT, TL072BIDT, and TL072BIYDT (all STMicroelectronics) are J-FET amplifiers maintaining the dual-circuit 8-SOIC package. These variants feature improved slew rate (16 V/µs) and extended supply voltage range (6V to 36V), which encompasses the TL072IDG4 operating window. All are active products with AEC-Q100 automotive qualification. The TL072BIDT and TL072BIYDT offer superior input offset voltage (1 mV versus 3 mV) and extended temperature range (-40°C to 125°C). These substitutes are suitable for applications where the extended supply range and improved specifications provide design margin.
General Purpose Amplifier Alternatives (Active Status):
The MC33172D and MC33172DT (STMicroelectronics) are general purpose amplifiers with dual circuits in 8-SOIC packaging. These devices feature significantly lower input bias current (20 nA versus 65 pA) and lower supply current (220 µA versus 1.4 mA), making them suitable for low-power applications. However, they exhibit reduced slew rate (2 V/µs) and lower gain bandwidth product (2.1 MHz), limiting their use to applications not requiring the TL072IDG4's bandwidth performance.
Audio Amplifier Alternative (Active Status):
The LM833DT (STMicroelectronics) is an audio amplifier with dual circuits in 8-SOIC packaging. This device provides higher gain bandwidth product (15 MHz) and lower input offset voltage (0.3 mV), but exhibits significantly higher input bias current (300 nA) and lower slew rate (7 V/µs). The LM833DT is suitable only for audio-specific applications where the J-FET input characteristics of the TL072IDG4 are not required.
Compliance Considerations:
All listed substitutes maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Automotive-grade variants (TL072IDT, TL072CDT, TL072ACDT, TL072BIDT, TL072BIYDT) carry AEC-Q100 qualification for automotive applications.
Frequently Asked Questions (FAQ)
Q: Can the TL072IDR directly replace the TL072IDG4 without circuit modifications?
A: Yes. The TL072IDR provides identical electrical specifications and packaging. Both use the 8-SOIC surface mount package with matching pinout. No circuit modifications are required.
Q: What is the difference between TL072IDT and TL072CDT?
A: Both are J-FET amplifiers in 8-SOIC packaging with identical electrical performance. The primary difference is operating temperature range: TL072IDT operates from -40°C to 125°C, while TL072CDT operates from 0°C to 70°C. Both carry AEC-Q100 automotive qualification.
Q: Why do the STMicroelectronics TL072 variants show different slew rates than the Texas Instruments TL072IDG4?
A: The STMicroelectronics TL072 variants (TL072IDT, TL072CDT, etc.) specify 16 V/µs slew rate compared to 13 V/µs for the Texas Instruments TL072IDG4. This represents improved performance within the same J-FET amplifier family. The higher slew rate is compatible with applications designed for the original specification.
Q: Can MC33172D or MC33172DT be used as substitutes for the TL072IDG4?
A: MC33172D and MC33172DT are general purpose amplifiers, not J-FET amplifiers. While they share the 8-SOIC package and dual-circuit configuration, they exhibit fundamentally different input characteristics (20 nA input bias current versus 65 pA) and significantly lower bandwidth (2.1 MHz versus 5.25 MHz). These devices are suitable only for applications where J-FET input performance is not required.
Q: Is the LM833DT suitable for replacing the TL072IDG4 in audio applications?
A: The LM833DT is an audio amplifier with higher bandwidth (15 MHz) and lower input offset voltage (0.3 mV), but it exhibits much higher input bias current (300 nA versus 65 pA) and lower slew rate (7 V/µs versus 13 V/µs). Substitution is application-specific and requires verification that the LM833DT's input bias current does not degrade circuit performance.
Q: What does AEC-Q100 qualification mean for these amplifiers?
A: AEC-Q100 is an automotive industry qualification standard. Devices carrying this certification have been tested and validated for automotive applications, including temperature cycling, vibration, and reliability testing. The TL072IDT, TL072CDT, TL072ACDT, TL072BIDT, and TL072BIYDT all carry AEC-Q100 qualification.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance, consistent with the TL072IDG4. All devices also carry unlimited moisture sensitivity level (MSL 1).
Q: What is the difference between TL072BIDT and TL072BIYDT?
A: Both devices are identical in electrical performance and specifications. The primary difference is packaging: TL072BIDT is supplied in Cut Tape (CT) & Digi-Reel format, while TL072BIYDT is supplied in Tape & Reel (TR) format. Selection depends on procurement and assembly requirements.
Q: Why is the TL072ID listed as obsolete if it is a substitute?
A: The TL072ID (STMicroelectronics) is listed as obsolete but remains in stock (1,458 pieces). It is included as a substitute reference due to its J-FET amplifier topology and 8-SOIC packaging. However, active alternatives such as TL072IDT are preferred for new designs to ensure long-term availability.
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