MCP618T-I/MS Equivalent & Substitute Parts

Part Overview

The MCP618T-I/MS is a general purpose operational amplifier manufactured by Microchip Technology, configured as a single-circuit rail-to-rail amplifier in an 8-MSOP surface mount package. This device is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or packaging format preferences while maintaining functional equivalence in the application circuit.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	0.08	V/µs
Gain Bandwidth Product	190	kHz
Current - Input Bias	15	nA
Voltage - Input Offset	150	µV
Current - Supply	19	µA
Current - Output / Channel	17	mA
Voltage - Supply Span (Min)	2.3	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 85	°C
Package / Case	8-MSOP (0.118", 3.00mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the MCP618T-I/MS are identified based on strict electrical and mechanical parameter matching within the linear amplifier category. The substitution logic is structured as follows:

Primary Substitution Criteria:

Package compatibility: 8-MSOP surface mount form factor
Output configuration: Rail-to-rail output type
Single-circuit configuration
Supply voltage range overlap: minimum 2.3 V to 5.5 V
Operating temperature range coverage: -40°C minimum and 85°C maximum
RoHS3 compliance and MSL Level 1 rating

Substitute Part Categories:

Category 1: Direct Microchip Technology Substitutes MCP618-I/MS differs from the main part only in packaging format (Tube vs. Tape & Reel). All electrical specifications, base product number (MCP618), and compliance certifications are identical. This substitute maintains complete functional equivalence.

Category 2: Analog Devices Inc. Cross-Substitutes LTC6800HMS8#PBF and LTC6800HMS8#TRPBF are Analog Devices instrumentation amplifiers with the same 8-MSOP package footprint and rail-to-rail output configuration. These parts share the same supply voltage range (2.7 V to 5.5 V minimum overlap with MCP618T-I/MS at 2.3 V to 5.5 V) and operating temperature range (-40°C to 125°C, which exceeds the MCP618T-I/MS range). Both are ROHS3 compliant with MSL Level 1 rating.

Parameter Comparison

Parameter	MCP618T-I/MS	MCP618-I/MS	LTC6800HMS8#PBF	LTC6800HMS8#TRPBF
Manufacturer	Microchip Technology	Microchip Technology	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	General Purpose	General Purpose	Instrumentation	Instrumentation
Number of Circuits	1	1	1	1
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	0.08	0.08	0.2	0.2
Gain Bandwidth Product (kHz)	190	190	200	200
Current - Input Bias (nA)	15	15	4	4
Voltage - Input Offset (µV)	150	150	100	100
Current - Supply (mA)	0.019	0.019	1.3	1.3
Current - Output / Channel (mA)	17	17	17	17
Voltage - Supply Span Min (V)	2.3	2.3	2.7	2.7
Voltage - Supply Span Max (V)	5.5	5.5	5.5	5.5
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 125	-40 to 125
Package / Case	8-MSOP	8-MSOP	8-MSOP	8-MSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Packaging Format	Tape & Reel (TR)	Tube	Tube	Cut Tape & Digi-Reel
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

MCP618-I/MS Selection: This Microchip Technology part is the primary direct substitute for MCP618T-I/MS. It maintains identical electrical specifications and base product number (MCP618). The only difference is packaging format: MCP618-I/MS is supplied in Tube format while MCP618T-I/MS is supplied in Tape & Reel format. Selection of this substitute is appropriate when Tube packaging meets assembly requirements and inventory availability is prioritized. Both parts are Active product status with ROHS3 compliance and MSL Level 1 rating.

LTC6800HMS8#PBF and LTC6800HMS8#TRPBF Selection: These Analog Devices instrumentation amplifiers are cross-substitutes with different amplifier topology (instrumentation vs. general purpose) but equivalent mechanical and core electrical compatibility. Both parts share the 8-MSOP package footprint, rail-to-rail output configuration, and supply voltage range maximum of 5.5 V. The LTC6800 series exhibits superior performance characteristics: higher slew rate (0.2 V/µs vs. 0.08 V/µs), lower input bias current (4 nA vs. 15 nA), lower input offset voltage (100 µV vs. 150 µV), and extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C). However, the LTC6800 series requires minimum supply voltage of 2.7 V, which is 0.4 V higher than the MCP618T-I/MS minimum of 2.3 V. Selection of LTC6800 parts is appropriate for applications where the higher minimum supply voltage is acceptable and improved performance specifications provide circuit design advantages. Both parts are Active product status with ROHS3 compliance and MSL Level 1 rating.

Packaging Format Considerations:

MCP618T-I/MS: Tape & Reel format for high-volume automated assembly
MCP618-I/MS: Tube format for lower-volume or manual assembly processes
LTC6800HMS8#PBF: Tube format
LTC6800HMS8#TRPBF: Cut Tape & Digi-Reel format for automated assembly

Frequently Asked Questions (FAQ)

Q: Can MCP618-I/MS be used as a direct replacement for MCP618T-I/MS?

A: Yes. MCP618-I/MS is a direct electrical equivalent with identical specifications. The only difference is packaging format: Tube versus Tape & Reel. Functional performance in the circuit is identical. Packaging selection depends on assembly process requirements.

Q: What is the key difference between MCP618T-I/MS and the LTC6800 series?

A: The primary difference is amplifier topology: MCP618T-I/MS is a general purpose operational amplifier, while LTC6800HMS8#PBF and LTC6800HMS8#TRPBF are instrumentation amplifiers. Both share the same 8-MSOP package and rail-to-rail output configuration. The LTC6800 series offers superior performance (higher slew rate, lower input bias current, lower input offset voltage, extended temperature range) but requires a minimum supply voltage of 2.7 V instead of 2.3 V.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. MCP618T-I/MS, MCP618-I/MS, LTC6800HMS8#PBF, and LTC6800HMS8#TRPBF are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: What is the difference between LTC6800HMS8#PBF and LTC6800HMS8#TRPBF?

A: Both parts are electrically identical. The difference is packaging format: LTC6800HMS8#PBF is supplied in Tube format, while LTC6800HMS8#TRPBF is supplied in Cut Tape & Digi-Reel format. Selection depends on assembly process requirements.

Q: Can I use LTC6800 parts in an application designed for MCP618T-I/MS?

A: Mechanical compatibility is confirmed: both use the 8-MSOP package footprint. Electrical compatibility requires verification of the minimum supply voltage requirement. If your application operates at 2.3 V to 2.6 V, the LTC6800 series cannot be used because its minimum supply voltage is 2.7 V. If your application operates at 2.7 V or higher, the LTC6800 series is mechanically and electrically compatible and offers superior performance specifications.

Q: What is the operating temperature range difference?

A: MCP618T-I/MS operates from -40°C to 85°C. LTC6800HMS8#PBF and LTC6800HMS8#TRPBF operate from -40°C to 125°C. If your application requires operation above 85°C, only the LTC6800 series is suitable.

Q: Are there any compliance or certification differences between these parts?

A: No. All four parts (MCP618T-I/MS, MCP618-I/MS, LTC6800HMS8#PBF, LTC6800HMS8#TRPBF) are ROHS3 compliant, REACH unaffected, classified as EAR99, and carry MSL Level 1 rating. Compliance status is identical across all substitutes.

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