TC1034ECTTR Equivalent & Substitute Parts

Part Overview

The TC1034ECTTR is a general-purpose operational amplifier manufactured by Microchip Technology, housed in a SOT-23-5 surface mount package. This device features rail-to-rail output capability and is designed for low-power applications requiring single-circuit amplification. The TC1034ECTTR is classified as obsolete, necessitating identification of active substitute components that maintain functional and electrical compatibility for ongoing production and maintenance applications.

Key Parameters

Parameter	TC1034ECTTR	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	0.035	V/µs
Gain Bandwidth Product	90	kHz
Current - Input Bias	50	pA
Voltage - Input Offset	100	µV
Current - Supply	6	µA
Current - Output / Channel	4	mA
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 85	°C
Package / Case	SC-74A, SOT-753	—
Supplier Device Package	SOT-23-5	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TC1034ECTTR is determined by the following critical parameters:

Primary Compatibility Criteria:

Single-circuit operational amplifier configuration
Rail-to-rail output capability
Surface mount packaging (SOT-23-5 or SC-70-5)
Supply voltage range compatibility (minimum 1.8 V, maximum 5.5 V)
Operating temperature range (-40°C to 85°C minimum)
Active product status (required for ongoing availability)

Secondary Performance Considerations:

Slew rate (0.035 V/µs baseline)
Gain bandwidth product (90 kHz baseline)
Input bias current (50 pA baseline)
Input offset voltage (100 µV baseline)
Supply current (6 µA baseline)
Output current capability (4 mA baseline)

Substitute parts are grouped into two categories based on package compatibility: SOT-23-5 package variants and SC-70-5 package variants. Parts within each package group maintain mechanical and electrical pin compatibility while offering enhanced or equivalent performance specifications.

Parameter Comparison

Parameter	TC1034ECTTR	MCP606T-I/OT	AD8515ARTZ-REEL	AD8515ARTZ-REEL7	OPA379AIDBVT	TS931ILT	Unit
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	—
Number of Circuits	1	1	1	1	1	1	—
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	—
Slew Rate	0.035	0.08	2.7	2.7	0.03	0.05	V/µs
Gain Bandwidth Product	90	155	5000	5000	90	100	kHz
Current - Input Bias	50	1	5	5	5	1	pA
Voltage - Input Offset	100	250	1000	1000	400	10000	µV
Current - Supply	6	18.7	410	410	2.9	20	µA
Current - Output / Channel	4	17	20	20	5	5	mA
Voltage - Supply Span (Min)	1.8	2.5	1.8	1.8	1.8	2.7	V
Voltage - Supply Span (Max)	5.5	6	5	5	5.5	10	V
Operating Temperature	-40 to 85	-40 to 85	-40 to 125	-40 to 125	-40 to 125	-40 to 105	°C
Package / Case	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	—
Supplier Device Package	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	—
Product Status	Obsolete	Active	Active	Active	Active	Active	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

Primary Substitute - SOT-23-5 Package:

The OPA379AIDBVT (Texas Instruments) is the closest functional equivalent to the TC1034ECTTR. Both devices share identical slew rate (0.03 V/µs vs. 0.035 V/µs) and gain bandwidth product (90 kHz), ensuring equivalent frequency response characteristics. The OPA379AIDBVT maintains the same supply voltage range (1.8 V to 5.5 V) and operates across an extended temperature range (-40°C to 125°C). This part is active, ROHS3 compliant, and available in high inventory (1,650 pcs). The SOT-23-5 package provides direct mechanical compatibility.

Secondary Substitute - SOT-23-5 Package:

The TS931ILT (STMicroelectronics) offers active product status with superior availability (24,788 pcs). While slew rate (0.05 V/µs) and gain bandwidth product (100 kHz) exceed the original specification, these enhancements are compatible with applications designed for the TC1034ECTTR. Input bias current is significantly lower (1 pA vs. 50 pA), and the device operates across an extended temperature range (-40°C to 105°C). Supply voltage range extends to 10 V maximum, providing greater flexibility. ROHS3 compliance and SOT-23-5 packaging ensure direct substitution capability.

Alternative Substitute - SOT-23-5 Package:

The MCP606T-I/OT (Microchip Technology) maintains manufacturer continuity and active status. Performance parameters exceed the original specification: slew rate of 0.08 V/µs and gain bandwidth product of 155 kHz support higher-frequency applications. Supply voltage range (2.5 V to 6 V) and operating temperature (-40°C to 85°C) are compatible with the original device. Higher output current capability (17 mA vs. 4 mA) provides enhanced drive capability. ROHS3 compliance and SOT-23-5 packaging ensure mechanical compatibility.

SC-70-5 Package Alternatives:

The AD8515AKSZ-REEL and AD8515AKSZ-REEL7 (Analog Devices Inc.) provide enhanced performance in SC-70-5 packaging. These devices feature significantly higher slew rate (2.7 V/µs) and gain bandwidth product (5 MHz), suitable for applications requiring faster transient response. Supply voltage range (1.8 V to 5 V) and extended operating temperature (-40°C to 125°C) exceed original specifications. Output current capability (20 mA) provides superior drive capability. Both variants are active with high inventory availability (3,100 and 31,580 pcs respectively). SC-70-5 packaging requires PCB layout modification but offers superior electrical performance.

Compliance and Availability:

All recommended substitutes maintain ROHS3 compliance and MSL-1 moisture sensitivity rating. All parts are active products with established supply chains. Selection should prioritize OPA379AIDBVT for closest electrical equivalence or TS931ILT for maximum availability and extended operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the OPA379AIDBVT directly replace the TC1034ECTTR without PCB modification?

A: Yes. Both devices use SOT-23-5 packaging with identical pin configuration (SC-74A, SOT-753). Electrical parameters are closely matched: slew rate 0.03 V/µs vs. 0.035 V/µs, and gain bandwidth product 90 kHz for both. Supply voltage range (1.8 V to 5.5 V) is identical. No PCB layout changes are required.

Q: What is the primary difference between TS931ILT and OPA379AIDBVT substitutes?

A: The TS931ILT offers higher slew rate (0.05 V/µs vs. 0.03 V/µs) and gain bandwidth product (100 kHz vs. 90 kHz), with significantly lower input bias current (1 pA vs. 5 pA). The TS931ILT also supports higher maximum supply voltage (10 V vs. 5.5 V). Both maintain SOT-23-5 compatibility. Selection depends on application requirements for frequency response and supply voltage flexibility.

Q: Why do AD8515 variants use SC-70-5 packaging instead of SOT-23-5?

A: The AD8515AKSZ-REEL and AD8515AKSZ-REEL7 are available in SC-70-5 (5-TSSOP, SOT-353) packaging, which differs from the original SOT-23-5. While pin count is identical (5 pins), physical dimensions and PCB footprint differ. SC-70-5 packaging is smaller and requires PCB redesign. These variants are recommended only when package size reduction is a design objective.

Q: Is the MCP606T-I/OT suitable for low-power applications?

A: The MCP606T-I/OT supply current (18.7 µA) is approximately 3× higher than the TC1034ECTTR (6 µA). For battery-powered or ultra-low-power applications, the OPA379AIDBVT (2.9 µA) or TS931ILT (20 µA) may be more appropriate. The MCP606T-I/OT is suitable for applications where power consumption is not the primary constraint.

Q: What is the significance of the obsolete status of TC1034ECTTR?

A: Obsolete status indicates the manufacturer has discontinued production and support. Existing inventory may be limited and pricing may increase. All recommended substitutes are active products with established manufacturing and supply chains, ensuring long-term availability and stable pricing for new designs and production runs.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitutes (OPA379AIDBVT, TS931ILT, MCP606T-I/OT, AD8515AKSZ-REEL, AD8515AKSZ-REEL7) are ROHS3 compliant with MSL-1 moisture sensitivity rating. Compliance certifications match the original TC1034ECTTR, ensuring regulatory compatibility.

Q: Can I use AD8515ARTZ-REEL in place of AD8515AKSZ-REEL?

A: Both AD8515ARTZ-REEL and AD8515ARTZ-REEL7 use SOT-23-5 packaging (SC-74A, SOT-753) and share identical electrical specifications with the SC-70-5 variants. The primary difference is packaging format: ARTZ variants use SOT-23-5 instead of SC-70-5. For direct TC1034ECTTR substitution, AD8515ARTZ-REEL or AD8515ARTZ-REEL7 are compatible alternatives to the SC-70-5 AD8515 variants, with no PCB modification required.

Q: What inventory levels are available for each substitute?

A: Current inventory levels are: OPA379AIDBVT (1,650 pcs), MCP606T-I/OT (55,400 pcs), TS931ILT (24,788 pcs), AD8515AKSZ-REEL (3,100 pcs), AD8515AKSZ-REEL7 (31,580 pcs), AD8515ARTZ-REEL (19,461 pcs), AD8515ARTZ-REEL7 (69,074 pcs). Inventory levels support production requirements across all substitute options.

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