MIC2941ABT Equivalent & Substitute Parts

Part Overview

The MIC2941ABT is a linear voltage regulator IC from Microchip Technology designed for positive adjustable output applications. It delivers 1.25A output current in a TO-220-5 package and supports input voltages up to 26V with adjustable output from 1.24V to 26V. The device includes integrated protection features for overcurrent, overtemperature, and reverse polarity conditions.

The MIC2941ABT is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Key Parameters

Parameter	Value
Manufacturer Part Number	MIC2941ABT
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Package / Case	TO-220-5
Output Configuration	Positive
Output Type	Adjustable
Voltage - Input (Max)	26V
Voltage - Output (Min/Fixed)	1.24V
Voltage - Output (Max)	26V
Current - Output	1.25A
Voltage Dropout (Max)	0.6V @ 1.25A
Operating Temperature	-40°C ~ 125°C
Control Features	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity
Mounting Type	Through Hole
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the MIC2941ABT are identified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

Package / Case: TO-220-5 (identical physical footprint and pin configuration)
Output Configuration: Positive adjustable output
Voltage - Input (Max): 26V or greater
Current - Output: 1.25A or greater
Operating Temperature Range: -40°C ~ 125°C or wider
Control Features: Enable function
Mounting Type: Through Hole

Substitute Categories:

Direct Microchip Equivalent (MIC2941AWT): Identical electrical specifications and base product number with active product status and improved compliance.
Cross-Manufacturer Alternative (LM2941T/NOPB): Texas Instruments equivalent with compatible TO-220-5 packaging and adjustable positive output topology. Meets core voltage and temperature requirements with manufacturer-recommended status.

Parameter Comparison

Parameter	MIC2941ABT	MIC2941AWT	LM2941T/NOPB
Manufacturer	Microchip Technology	Microchip Technology	Texas Instruments
Package / Case	TO-220-5	TO-220-5	TO-220-5
Output Configuration	Positive	Positive	Positive
Output Type	Adjustable	Adjustable	Adjustable
Voltage - Input (Max)	26V	26V	26V
Voltage - Output (Min/Fixed)	1.24V	1.24V	5V
Voltage - Output (Max)	26V	26V	20V
Current - Output	1.25A	1.25A	1A
Voltage Dropout (Max)	0.6V @ 1.25A	0.6V @ 1.25A	1V @ 1A
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Control Features	Enable	Enable	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity	Over Current, Over Temperature, Reverse Polarity	Over Temperature, Reverse Polarity, Short Circuit
Mounting Type	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MIC2941AWT (Microchip Technology): This part is the preferred direct substitute for the MIC2941ABT. It maintains identical electrical specifications, base product number, and TO-220-5 packaging. The MIC2941AWT carries active product status and achieves ROHS3 compliance, providing improved regulatory alignment and supply chain continuity. Selection of this part eliminates design changes while supporting modern compliance requirements.

LM2941T/NOPB (Texas Instruments): This part functions as a cross-manufacturer alternative with compatible TO-220-5 packaging and adjustable positive output topology. The LM2941T/NOPB meets the core voltage input specification (26V maximum) and operating temperature range (-40°C ~ 125°C). However, the output current is rated at 1A compared to the MIC2941ABT's 1.25A, and the minimum output voltage is fixed at 5V rather than adjustable to 1.24V. The LM2941T/NOPB is suitable for applications where output current requirements do not exceed 1A and minimum output voltage of 5V is acceptable. This part carries active product status and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the MIC2941AWT be used as a direct replacement for the MIC2941ABT without circuit modifications?

A: Yes. The MIC2941AWT is electrically and mechanically identical to the MIC2941ABT. Both parts share the same base product number (MIC2941), identical output specifications (1.25A, 1.24V to 26V adjustable), and TO-220-5 packaging. No circuit modifications are required.

Q: What are the key differences between the MIC2941ABT and the LM2941T/NOPB?

A: The primary differences are output current rating and minimum output voltage. The MIC2941ABT supports 1.25A output current with adjustable minimum voltage of 1.24V. The LM2941T/NOPB is rated for 1A output current with a fixed minimum output voltage of 5V. Additionally, the LM2941T/NOPB has a higher dropout voltage (1V @ 1A versus 0.6V @ 1.25A). These differences may affect circuit performance in applications requiring higher current or lower output voltages.

Q: Are all substitute parts available in the same TO-220-5 package?

A: Yes. Both the MIC2941AWT and LM2941T/NOPB are packaged in TO-220-5, ensuring identical physical footprint and pin configuration compatibility with the original MIC2941ABT.

Q: What is the compliance status of the substitute parts?

A: The MIC2941AWT and LM2941T/NOPB both achieve ROHS3 compliance, whereas the original MIC2941ABT is RoHS non-compliant. Both substitute parts are REACH Unaffected and classified under ECCN EAR99.

Q: Why is the MIC2941ABT classified as obsolete?

A: The MIC2941ABT has reached end-of-life status. The MIC2941AWT represents the active continuation of this product line from Microchip Technology with improved compliance characteristics.

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