LM2941CT Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LM2941CT is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. It delivers 1A output current in a TO-220-5 package and supports input voltages up to 26V with adjustable output ranging from 5V to 20V. The main part is currently in Last Time Buy status, making equivalent substitutes necessary for ongoing design support and procurement planning. Direct manufacturer alternatives and parametric equivalents are available from Texas Instruments with identical electrical specifications and package compatibility.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Package / Case	TO-220-5
Output Configuration	Positive
Output Type	Adjustable
Voltage - Input (Max)	26V
Voltage - Output (Min/Fixed)	5V
Voltage - Output (Max)	20V
Current - Output	1A
Voltage Dropout (Max)	1V @ 1A
Operating Temperature	0°C ~ 125°C
Control Features	Enable
Protection Features	Over Temperature, Reverse Polarity, Short Circuit
RoHS Status	ROHS3 Compliant
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution eligibility for the LM2941CT is determined by strict electrical and mechanical parameter matching across the following criteria:

Critical Matching Parameters:

Output Configuration: Positive
Output Type: Adjustable
Voltage - Input (Max): 26V
Voltage - Output (Min/Fixed): 5V
Voltage - Output (Max): 20V
Current - Output: 1A
Voltage Dropout (Max): 1V @ 1A
Package / Case: TO-220-5
Operating Temperature: 0°C ~ 125°C
Control Features: Enable
Protection Features: Over Temperature, Reverse Polarity, Short Circuit

All substitute parts listed maintain identical electrical performance specifications and physical package compatibility. Variations in product status and packaging lead designation (formed vs. standard leads) do not affect functional interchangeability in circuit applications.

Parameter Comparison

Parameter	LM2941CT	LM2941CT/LF03	LM2941CT/NOPB	LM2941CT/LF04
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Output Configuration	Positive	Positive	Positive	Positive
Output Type	Adjustable	Adjustable	Adjustable	Adjustable
Voltage - Input (Max)	26V	26V	26V	26V
Voltage - Output (Min/Fixed)	5V	5V	5V	5V
Voltage - Output (Max)	20V	20V	20V	20V
Current - Output	1A	1A	1A	1A
Voltage Dropout (Max)	1V @ 1A	1V @ 1A	1V @ 1A	1V @ 1A
Current - Quiescent (Iq)	10 mA	10 mA	10 mA	10 mA
Current - Supply (Max)	15 mA	15 mA	15 mA	15 mA
Operating Temperature	0°C ~ 125°C	0°C ~ 125°C	0°C ~ 125°C	0°C ~ 125°C
Package / Case	TO-220-5	TO-220-5 Formed Leads	TO-220-5	TO-220-5 Formed Leads
Control Features	Enable	Enable	Enable	Enable
Protection Features	Over Temperature, Reverse Polarity, Short Circuit	Over Temperature, Reverse Polarity, Short Circuit	Over Temperature, Reverse Polarity, Short Circuit	Over Temperature, Reverse Polarity, Short Circuit
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Last Time Buy	Active	Active	Active

Engineering Selection Recommendations

LM2941CT/LF03 – Active product status with formed lead configuration. Suitable for applications requiring lead forming during assembly. Inventory: 1488 Pcs.

LM2941CT/NOPB – Active product status with standard lead configuration. Highest current inventory availability at 2100 Pcs. Recommended for new designs and high-volume procurement.

LM2941CT/LF04 – Active product status with formed lead configuration. Parametric equivalent with identical electrical performance. Inventory: 977 Pcs.

All three substitutes maintain full compliance with ROHS3 and REACH requirements. Selection between alternatives should be based on assembly process requirements (formed vs. standard leads) and inventory availability for your procurement timeline.

Frequently Asked Questions (FAQ)

Q: Can LM2941CT/NOPB be used as a direct replacement for LM2941CT?

A: Yes. Both parts share identical electrical specifications, output characteristics, and TO-220-5 package compatibility. The primary difference is product status: LM2941CT is Last Time Buy while LM2941CT/NOPB is Active.

Q: What is the difference between standard and formed lead versions?

A: LM2941CT/LF03 and LM2941CT/LF04 feature formed leads, which are pre-bent for specific PCB hole spacing. Standard versions (LM2941CT and LM2941CT/NOPB) have straight leads requiring manual forming during assembly. Electrical performance is identical.

Q: Are all substitutes ROHS3 compliant?

A: Yes. LM2941CT, LM2941CT/LF03, LM2941CT/NOPB, and LM2941CT/LF04 are all ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute has the best inventory availability?

A: LM2941CT/NOPB offers the highest inventory at 2100 Pcs New Original In Stock.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided your PCB assembly process accommodates the lead configuration (formed or standard). All electrical parameters, thermal characteristics, and protection features are identical across all four part numbers.

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