MC7810AECT Linear Voltage Regulator - Equivalent & Substitute Parts

Part Overview

The MC7810AECT is a linear voltage regulator IC manufactured by onsemi, designed to provide a fixed positive 10V output at 1A current capacity in a TO-220-3 package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

MC7810AECT

onsemiIn Stock: 778MC7810AECT Datasheet

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L78S10CV

STMicroelectronicsIn Stock: 10101L78S10CV Datasheet

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UA7810CKCS

Texas InstrumentsIn Stock: 1816UA7810CKCS Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MC7810AECT are qualified based on the following critical parameters that determine functional compatibility:

• Fixed output voltage of 10V
• Positive output configuration
• TO-220-3 package / Through Hole mounting
• Output current capability equal to or greater than 1A
• Maximum input voltage of 28V or higher
• Operating temperature range that encompasses or exceeds 0°C ~ 125°C
• Protection features including Over Temperature and Short Circuit protection

The substitute parts listed below meet these core electrical and mechanical requirements, enabling direct or near-direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

L78S10CV (STMicroelectronics): This substitute provides higher output current capability (2A versus 1A) and extended operating temperature range (0°C ~ 150°C). The device is obsolete but maintains full electrical compatibility with the MC7810AECT. The increased current rating provides design margin for applications requiring higher load capacity.

UA7810CKCS (Texas Instruments): This substitute offers intermediate output current (1.5A) and enhanced protection features including Over Current and Reverse Polarity protection. The device status is Last Time Buy, indicating limited future availability. The maximum input voltage is 28V, which is lower than the MC7810AECT (35V), requiring verification that input voltage specifications do not exceed this limit in the target application.

Frequently Asked Questions (FAQ)

Q: Can the L78S10CV directly replace the MC7810AECT? A: Yes. Both devices provide 10V fixed positive output in TO-220-3 packages with compatible pinouts. The L78S10CV's higher current rating (2A) and extended temperature range (0°C ~ 150°C) make it functionally superior for the same application space.

Q: What is the key difference between the UA7810CKCS and MC7810AECT? A: The UA7810CKCS has a lower maximum input voltage specification (28V versus 35V) and higher output current (1.5A versus 1A). Applications with input voltages exceeding 28V require the L78S10CV or confirmation that the MC7810AECT input specification is not exceeded.

Q: Are there package compatibility concerns with these substitutes? A: All three devices use the TO-220-3 package with identical pinouts and through-hole mounting. No PCB layout modifications are required for mechanical substitution.

Q: Why is product status relevant for selection? A: The MC7810AECT and L78S10CV are both obsolete, indicating no new production. The UA7810CKCS is Last Time Buy status, meaning limited stock remains before discontinuation. For long-term designs, verify substitute availability with your component supplier.

Q: Do the substitute parts require different circuit design considerations? A: No. All three devices are fixed-output linear regulators with identical functional operation. Circuit design remains unchanged; only component procurement source changes.