TL072BCDT Equivalent & Substitute Parts

Part Overview

The TL072BCDT is a J-FET input operational amplifier manufactured by STMicroelectronics, configured as a dual-channel (2 circuit) device in an 8-SOIC surface mount package. This part is classified as Obsolete, indicating that direct procurement from the original manufacturer may be limited or unavailable. The TL072BCDT is qualified to AEC-Q100 automotive standards and operates across a supply voltage range of 6V to 36V with a slew rate of 16V/µs and gain bandwidth product of 4 MHz. Due to its obsolete status, identifying equivalent substitute parts with compatible electrical and mechanical specifications is necessary for design continuity and production support.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	2	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Slew Rate	16	V/µs
Gain Bandwidth Product	4	MHz
Current - Input Bias	20	pA
Voltage - Input Offset	3	mV
Current - Supply	1.4	mA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	6	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	0 to 70	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the TL072BCDT are selected based on strict compatibility across 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 footprint compatibility without layout modifications.

Amplifier Type and Circuit Count: The primary substitutes maintain J-FET input architecture with 2 circuits per package, preserving the low input bias current characteristic (20 pA or lower) essential for high-impedance signal conditioning applications.

Electrical Operating Range: Substitute parts must support the supply voltage span of 6V to 36V minimum. Parts with extended supply ranges (such as 5V to 30V or 8V to 36V) remain compatible within the TL072BCDT operating envelope.

Slew Rate and Bandwidth: The TL072BCDT specifies 16V/µs slew rate and 4 MHz gain bandwidth product. Substitute J-FET amplifiers with equal or higher slew rates and bandwidth products maintain or improve signal fidelity.

Output Current Capability: The 40 mA per-channel output current requirement is met by all J-FET substitutes listed, which specify 27 mA or higher per-channel output current.

Compliance and Status: Active product status substitutes are prioritized for long-term availability. RoHS3 compliance and MSL 1 rating ensure environmental and moisture handling compatibility.

Parameter Comparison

Parameter	TL072BCDT	AD8512ARZ	ADTL082ARZ-REEL	LF353D	LT1169CS8#TRPBF	AS358MTR-G1
Manufacturer	STMicroelectronics	Analog Devices Inc.	Analog Devices Inc.	onsemi	Analog Devices Inc.	Diodes Incorporated
Amplifier Type	J-FET	J-FET	J-FET	J-FET	J-FET	General Purpose
Number of Circuits	2	2	2	2	2	2
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Slew Rate (V/µs)	16	20	20	13	4.2	—
Gain Bandwidth Product (MHz)	4	8	5	3	5.3	—
Current - Input Bias (pA)	20	25	2	50	4	20000
Voltage - Input Offset (mV)	3	0.1	1.5	5	0.6	2
Current - Supply (mA)	1.4	2.2	1.2	3.6	5.3	0.7
Current - Output / Channel (mA)	40	70	27	40	—	40
Voltage - Supply Span Min (V)	6	10	8	7	9	3
Voltage - Supply Span Max (V)	36	30	36	36	40	36
Operating Temperature (°C)	0 to 70	-40 to 125	-40 to 125	0 to 70	0 to 70	-40 to 85
Product Status	Obsolete	Active	Active	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	—	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

Primary J-FET Substitutes (Highest Compatibility):

The AD8512ARZ and AD8512ARZ-REEL represent the most direct functional replacements for the TL072BCDT. Both parts maintain J-FET input architecture with 2 circuits in 8-SOIC packaging. The AD8512 series offers superior performance with 20V/µs slew rate and 8 MHz gain bandwidth product, exceeding the TL072BCDT specifications. Both variants are Active products with ROHS3 compliance and MSL 1 rating, ensuring long-term availability and environmental compatibility. The primary distinction between AD8512ARZ and AD8512ARZ-REEL is packaging format (Tube versus Cut Tape & Digi-Reel), with no electrical differences.

The ADTL082ARZ-REEL provides an alternative J-FET solution with 20V/µs slew rate and 5 MHz bandwidth. This part features exceptionally low input bias current (2 pA), superior to the TL072BCDT (20 pA), and supports the full 8V to 36V supply range. ADTL082ARZ-REEL is Active with ROHS3 compliance and MSL 1 rating.

Secondary J-FET Substitutes (Functional Compatibility with Constraints):

The LT1169CS8#TRPBF is an Active J-FET amplifier with 4 pA input bias current and 5.3 MHz bandwidth. This part operates across 9V to 40V supply range, which encompasses the TL072BCDT 6V to 36V envelope with a 9V minimum constraint. The LT1169 series is ROHS3 compliant with MSL 1 rating and offers higher supply voltage ceiling (40V) for extended range applications.

The LF353D (onsemi) maintains J-FET architecture with 13V/µs slew rate and 3 MHz bandwidth. This part is Obsolete with RoHS non-compliance, limiting its suitability for new designs requiring environmental compliance certification.

General Purpose Alternative (Limited Substitution):

The AS358MTR-G1 (Diodes Incorporated) is a General Purpose amplifier with 2 circuits in 8-SOIC packaging. While not J-FET based, it supports the 3V to 36V supply range and provides 40 mA per-channel output current. The AS358 is Active and ROHS3 compliant but carries MSL 3 (168 Hours) moisture sensitivity, requiring controlled storage conditions. Input bias current is 20 nA (significantly higher than J-FET alternatives), making this suitable only for applications where J-FET input characteristics are not critical.

Compliance Considerations:

For automotive applications requiring AEC-Q100 qualification, the AD8512 and ADTL082 series from Analog Devices are preferred, as these manufacturers maintain automotive-grade product lines. The LT1169 series is also suitable for automotive use. The AS358MTR-G1 and LF353D do not carry explicit automotive qualification in the provided specifications.

Frequently Asked Questions (FAQ)

Q: Can the AD8512ARZ directly replace the TL072BCDT without PCB modifications?

A: Yes. Both parts use identical 8-SOIC (0.154", 3.90mm Width) surface mount packaging with the same pinout for dual-channel J-FET amplifiers. No PCB layout changes are required. The AD8512ARZ offers improved electrical performance (20V/µs slew rate versus 16V/µs, 8 MHz bandwidth versus 4 MHz) while maintaining backward compatibility.

Q: What is the key difference between AD8512ARZ and AD8512ARZ-REEL?

A: Both parts are electrically identical. The difference is packaging format: AD8512ARZ is supplied in Tube packaging, while AD8512ARZ-REEL is supplied in Cut Tape & Digi-Reel format. Selection depends on procurement and assembly line requirements. Inventory availability differs (12,423 pcs for Tube versus 16,600 pcs for Reel).

Q: Why is the ADTL082ARZ-REEL recommended over the LF353D?

A: The ADTL082ARZ-REEL is Active with ROHS3 compliance and MSL 1 rating, ensuring long-term availability and environmental compliance. The LF353D is Obsolete with RoHS non-compliance, presenting supply chain risk and regulatory concerns for new designs. The ADTL082 also features superior input bias current (2 pA versus 50 pA).

Q: Can the AS358MTR-G1 be used as a substitute in high-impedance signal conditioning circuits?

A: The AS358MTR-G1 is not recommended for high-impedance applications. Its input bias current is 20 nA (1,000 times higher than the TL072BCDT at 20 pA), which introduces significant error in circuits with source impedances above 1 MΩ. J-FET alternatives (AD8512, ADTL082, LT1169) are required for high-impedance applications.

Q: What supply voltage constraints apply when substituting with the LT1169CS8#TRPBF?

A: The LT1169 requires a minimum supply voltage of 9V, compared to the TL072BCDT minimum of 6V. Designs operating at 6V to 8V supply voltage cannot use the LT1169 without circuit redesign. The LT1169 maximum supply voltage is 40V, exceeding the TL072BCDT 36V maximum, allowing operation in higher voltage applications.

Q: Are all recommended substitutes RoHS3 compliant?

A: All primary J-FET substitutes (AD8512ARZ, AD8512ARZ-REEL, ADTL082ARZ-REEL, LT1169CS8#TRPBF) and the AS358MTR-G1 are ROHS3 compliant. The LF353D is RoHS non-compliant and should not be used in designs requiring environmental compliance certification.

Q: What is the MSL (Moisture Sensitivity Level) impact on component handling?

A: The TL072BCDT and all primary J-FET substitutes carry MSL 1 (Unlimited), indicating no moisture sensitivity constraints. Components can be stored at room temperature without desiccant protection. The AS358MTR-G1 carries MSL 3 (168 Hours), requiring storage in sealed containers with desiccant and limiting shelf life to 168 hours after opening.

Q: Which substitute offers the best performance improvement over the TL072BCDT?

A: The AD8512ARZ provides the most significant performance enhancement with 20V/µs slew rate (25% improvement), 8 MHz bandwidth (100% improvement), and lower input offset voltage (100 µV versus 3 mV). These improvements benefit applications requiring faster signal settling and reduced DC offset errors.

Q: Can substitutes be mixed in the same design if multiple TL072BCDT devices are required?

A: Mixing different substitute parts in the same design is not recommended. While all J-FET substitutes are functionally compatible, variations in input bias current, offset voltage, and slew rate can introduce performance inconsistencies across channels. Use a single substitute part number throughout the design for consistent performance.

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