MCP6401T-H/OTVAO Equivalent & Substitute Parts

Part Overview

The MCP6401T-H/OTVAO is a general-purpose operational amplifier manufactured by Microchip Technology, designed for rail-to-rail applications in compact surface-mount packages. This single-circuit amplifier operates across a 1.8 V to 6 V supply range and is qualified to AEC-Q100 automotive standards, making it suitable for automotive and industrial applications requiring low-power operation.

The MCP6401T-H/OTVAO maintains Active product status with 736 units in current inventory. Substitute parts are identified based on matching electrical performance parameters, package compatibility, and operational specifications to ensure direct functional replacement in circuit designs.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	0.5	V/µs
Gain Bandwidth Product	1	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	4.5	mV
Current - Supply	45	µA
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	6	V
Operating Temperature Range	-40 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q100	—
Package / Case	SC-74A, SOT-753	—
Supplier Device Package	SOT-23-5	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the MCP6401T-H/OTVAO are selected based on the following critical parameters:

Primary Matching Criteria:

Amplifier Type: General Purpose
Number of Circuits: 1
Output Type: Rail-to-Rail
Gain Bandwidth Product: 1 MHz (±0.4 MHz tolerance)
Supply Voltage Range: Minimum 1.8 V, Maximum 6 V (or compatible subset)
Package Type: SOT-23-5 or equivalent small-outline surface-mount packages
Product Status: Active

Secondary Compatibility Factors:

Slew Rate: 0.5 V/µs or higher
Current - Supply: 45 µA to 150 µA (low-power operation)
Current - Input Bias: 1 pA to 15 nA (low input current)
Voltage - Input Offset: 1 mV to 4.5 mV
Operating Temperature: Minimum -40°C, Maximum 85°C or higher
RoHS3 Compliance and MSL rating

Substitutes are grouped into two categories: Direct Automotive-Grade Equivalents (AEC-Q100 qualified) and Commercial-Grade Alternatives (suitable for non-automotive applications or where automotive qualification is not required).

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (µA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Grade	Package
MCP6401T-H/OTVAO	Microchip Technology	0.5	1	1	4.5	45	1.8	6	-40 to 150	Automotive	SOT-23-5
AD8541ARTZ-REEL	Analog Devices Inc.	0.92	1	4	1	45	2.7	5.5	-40 to 125	Commercial	SOT-23-5
BU7241G-TR	Rohm Semiconductor	0.4	0.9	1	1	70	1.8	5.5	-40 to 85	Commercial	5-SSOP
LMV321WG-7	Diodes Incorporated	1	1	15	1.7	110	2.7	5.5	-40 to 85	Commercial	SOT-25
NCS2001SN2T1G	onsemi	1.6	1.4	10	0.5	820	0.9	7	-40 to 105	Commercial	5-TSOP
NCV2001SN2T1G	onsemi	1.6	1.4	10	0.5	820	0.9	7	-40 to 125	Automotive	5-TSOP
OPA342NA/250	Texas Instruments	1	1	0.2	1	150	2.7	5.5	-40 to 85	Commercial	SOT-23-5
OPA342NA/3K	Texas Instruments	1	1	0.2	1	150	2.7	5.5	-40 to 85	Commercial	SOT-23-5
OPA348AIDBVR	Texas Instruments	0.5	1	0.5	1	45	2.1	5.5	-40 to 125	Commercial	SOT-23-5
OPA348AIDBVT	Texas Instruments	0.5	1	0.5	1	45	2.1	5.5	-40 to 125	Commercial	SOT-23-5
OPA348AQDBVRQ1	Texas Instruments	0.5	1	0.5	1	45	2.1	5.5	-40 to 125	Automotive	SOT-23-5

Engineering Selection Recommendations

For Automotive Applications (AEC-Q100 Required):

The OPA348AQDBVRQ1 (Texas Instruments) is the primary automotive-grade substitute. It matches the MCP6401T-H/OTVAO in slew rate (0.5 V/µs), gain bandwidth product (1 MHz), supply current (45 µA), and operating temperature range (-40°C to 125°C). Both devices carry AEC-Q100 qualification and ROHS3 compliance. The OPA348AQDBVRQ1 operates across 2.1 V to 5.5 V, which is compatible with the MCP6401T-H/OTVAO's 1.8 V to 6 V range for most automotive supply configurations.

The NCV2001SN2T1G (onsemi) provides an alternative automotive-grade option with extended supply range (0.9 V to 7 V) and higher slew rate (1.6 V/µs), though it exhibits higher supply current (820 µA) and different package format (5-TSOP).

For Commercial Applications (Non-Automotive):

The AD8541ARTZ-REEL (Analog Devices Inc.) offers close electrical equivalence with improved slew rate (0.92 V/µs) and lower input offset voltage (1 mV). It maintains the same SOT-23-5 package and 45 µA supply current, with operating range -40°C to 125°C.

The OPA348AIDBVR and OPA348AIDBVT (Texas Instruments) provide identical electrical performance to the automotive OPA348AQDBVRQ1 variant without AEC-Q100 qualification, suitable for industrial and consumer applications.

Package Compatibility Considerations:

Substitutes using SOT-23-5 packages (AD8541ARTZ-REEL, OPA342NA/250, OPA342NA/3K, OPA348AIDBVR, OPA348AIDBVT, OPA348AQDBVRQ1) are direct pin-compatible replacements. The BU7241G-TR (5-SSOP) and NCS2001SN2T1G/NCV2001SN2T1G (5-TSOP) require PCB layout verification for pin assignment compatibility. The LMV321WG-7 (SOT-25) uses a different package footprint and is not pin-compatible.

Frequently Asked Questions (FAQ)

Q: Can the OPA348AQDBVRQ1 replace the MCP6401T-H/OTVAO in automotive applications?

A: Yes. Both devices are AEC-Q100 qualified, operate at -40°C to 125°C, share identical slew rate (0.5 V/µs) and gain bandwidth product (1 MHz), and consume 45 µA supply current. The OPA348AQDBVRQ1 operates across 2.1 V to 5.5 V, which covers standard automotive supply voltages within the MCP6401T-H/OTVAO's 1.8 V to 6 V range. Pin configuration is identical in SOT-23-5 package.

Q: What is the difference between NCS2001SN2T1G and NCV2001SN2T1G?

A: Both parts are electrically identical with 1.6 V/µs slew rate, 1.4 MHz gain bandwidth product, and 0.9 V to 7 V supply range. The NCV2001SN2T1G carries AEC-Q100 automotive qualification and operates to 125°C, while NCS2001SN2T1G is commercial-grade with 105°C maximum temperature. The NCV2001SN2T1G is suitable for automotive applications; the NCS2001SN2T1G is for commercial use.

Q: Why do some substitutes have higher supply current than the MCP6401T-H/OTVAO?

A: Supply current varies with amplifier design and performance characteristics. The LMV321WG-7 operates at 110 µA and NCS2001SN2T1G at 820 µA due to different internal circuit topologies. For low-power applications requiring 45 µA operation, select AD8541ARTZ-REEL, OPA348 variants, or BU7241G-TR.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance status, matching the MCP6401T-H/OTVAO environmental qualification.

Q: Can the LMV321WG-7 be used as a direct replacement?

A: The LMV321WG-7 is functionally equivalent but uses SOT-25 package instead of SOT-23-5. Pin assignments differ, requiring PCB redesign. It is not a direct pin-compatible replacement. Use only if circuit board layout can be modified.

Q: What is the significance of input bias current differences?

A: Input bias current affects circuit performance in high-impedance applications. The MCP6401T-H/OTVAO specifies 1 pA, while OPA342NA variants specify 0.2 pA (lower is better for precision circuits). Higher values like LMV321WG-7 (15 nA) may require input bias compensation in sensitive applications.

Q: Which substitute offers the widest supply voltage range?

A: The NCS2001SN2T1G and NCV2001SN2T1G operate across 0.9 V to 7 V, providing the widest supply range. The MCP6401T-H/OTVAO operates 1.8 V to 6 V. For applications requiring operation below 1.8 V or above 6 V, the onsemi parts are suitable alternatives.

Q: Is moisture sensitivity level important for substitution?

A: Yes. The MCP6401T-H/OTVAO specifies MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Most substitutes also specify MSL 1 or MSL 2 (1 Year), which are compatible. The LMV321WG-7 specifies MSL 3 (168 Hours), requiring stricter moisture control during storage and assembly.

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