TL750M12CKC Equivalent & Substitute Parts

Part Overview

The TL750M12CKC is a linear voltage regulator IC from Texas Instruments designed to deliver a fixed 12V output at 750mA in a TO-220-3 package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The TL750M12CKC provides positive fixed output regulation with integrated protection features including over-current, over-temperature, over-voltage, and reverse polarity protection.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	12V
Output Current	750mA
Input Voltage (Max)	26V
Voltage Dropout (Max)	0.6V @ 750mA
Package Type	TO-220-3
Mounting Type	Through Hole
Operating Temperature Range	0°C ~ 125°C
Protection Features	Over Current, Over Temperature, Over Voltage, Reverse Polarity

Substitute Part Grouping Explanation

Substitution for the TL750M12CKC is determined by the following critical parameters:

Output voltage of 12V (fixed)
Output current capability of 750mA or greater
Maximum input voltage of 26V or greater
TO-220-3 package compatibility
Through-hole mounting type
Operating temperature range that encompasses or exceeds 0°C ~ 125°C

Substitute parts are grouped into two categories:

Parametric Equivalent: TL750M12CKCSE3 matches all electrical and mechanical specifications of the original part with identical output current (750mA) and protection features.

Manufacturer Recommended Substitutes: Parts from Texas Instruments, STMicroelectronics, and Microchip Technology that maintain 12V fixed output with output current ratings from 400mA to 3A, all in TO-220-3 packages. These parts satisfy the core substitution criteria while offering varying current capabilities and extended temperature ranges.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage	Package	Operating Temp	Product Status
TL750M12CKC	Texas Instruments	12V	750mA	26V	0.6V @ 750mA	TO-220-3	0°C ~ 125°C	Obsolete
TL750M12CKCSE3	Texas Instruments	12V	750mA	26V	0.6V @ 750mA	TO-220-3	0°C ~ 125°C	Active
LM2937ET-12/NOPB	Texas Instruments	12V	500mA	26V	1V @ 500mA	TO-220-3	-40°C ~ 125°C	Active
L78M12CV	STMicroelectronics	12V	500mA	35V	Not Specified	TO-220-3	0°C ~ 125°C	Active
MIC29150-12WT	Microchip Technology	12V	1.5A	26V	0.6V @ 1.5A	TO-220-3	-40°C ~ 125°C	Active
MIC2920A-12WT	Microchip Technology	12V	400mA	26V	0.75V @ 400mA	TO-220-3	-40°C ~ 125°C	Active
MIC29300-12WT	Microchip Technology	12V	3A	26V	0.6V @ 3A	TO-220-3	-40°C ~ 125°C	Active
MIC2937A-12WT	Microchip Technology	12V	750mA	26V	0.75V @ 750mA	TO-220-3	-40°C ~ 125°C	Active
MIC2940A-12WT	Microchip Technology	12V	1.25A	26V	0.6V @ 1.25A	TO-220-3	-40°C ~ 125°C	Active

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalent): TL750M12CKCSE3 is the direct parametric equivalent to TL750M12CKC. Both parts share identical electrical specifications, protection features, and operating temperature range. This part is currently in active production status and is ROHS3 compliant.

Primary Substitute (Same Current Rating): MIC2937A-12WT from Microchip Technology provides 750mA output current matching the original part specification. This part offers extended operating temperature range (-40°C ~ 125°C) and is actively produced. All protection features and electrical parameters align with substitution requirements.

Higher Current Capacity Substitutes: MIC29150-12WT (1.5A), MIC2940A-12WT (1.25A), and MIC29300-12WT (3A) are suitable for applications requiring greater output current while maintaining 12V fixed output and TO-220-3 package compatibility. These parts provide design margin for current-limited applications.

Lower Current Capacity Substitutes: LM2937ET-12/NOPB (500mA) and MIC2920A-12WT (400mA) are suitable only for applications with reduced current requirements below 750mA. L78M12CV (500mA) from STMicroelectronics offers higher maximum input voltage (35V) for applications with elevated input voltage specifications.

All substitute parts listed are ROHS3 compliant, REACH unaffected, and carry EAR99 classification matching the original part's regulatory status.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with lower current rating than the original TL750M12CKC? A: No. The TL750M12CKC is rated for 750mA output current. Substitutes with lower ratings (LM2937ET-12/NOPB at 500mA, MIC2920A-12WT at 400mA) will not support the full current specification and may cause circuit malfunction or component damage if the application draws 750mA.

Q: What is the difference between TL750M12CKC and TL750M12CKCSE3? A: TL750M12CKCSE3 is the active production equivalent of the obsolete TL750M12CKC. Both parts have identical electrical specifications, output voltage (12V), output current (750mA), dropout voltage (0.6V @ 750mA), and protection features. The primary difference is product status: TL750M12CKC is obsolete while TL750M12CKCSE3 is actively manufactured.

Q: Are all substitute parts in TO-220-3 packages? A: Yes. All substitute parts listed are packaged in TO-220-3, ensuring mechanical and thermal compatibility with the original TL750M12CKC. This package type is standard for through-hole linear voltage regulators in this current class.

Q: Can I use MIC29300-12WT (3A) as a direct replacement for TL750M12CKC (750mA)? A: Yes. MIC29300-12WT is electrically compatible and can be used as a substitute. The higher current rating (3A vs 750mA) provides additional design margin and does not create compatibility issues. The part maintains 12V fixed output, TO-220-3 package, and all required protection features.

Q: What is the operating temperature range difference between substitutes? A: The original TL750M12CKC operates from 0°C ~ 125°C. Most Microchip Technology substitutes (MIC2937A-12WT, MIC2940A-12WT, MIC29150-12WT, MIC2920A-12WT, MIC29300-12WT) extend the lower temperature limit to -40°C, providing wider temperature coverage. L78M12CV and TL750M12CKCSE3 maintain the 0°C lower limit.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the regulatory compliance of the original TL750M12CKC.

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