Product Overview
Three-Terminal 12V Linear Voltage Regulator 60dB (1kHz) - MC7812CT
Condition
Used. Excellent condition with nothing out of the ordinary observed during visual inspection. Acquired from an impressive private collection built over decades. No signs of damage or modification noted.
Ships same business day. Reliable parts since 1999. Honest pricing, no nonsense.
Product Overview
Motorola MC7812CT is a monolithic fixed positive voltage regulator designed to deliver a regulated 12V output in a three-terminal configuration. The MC prefix reflects Motorola's original semiconductor lineage, prior to the division becoming ON Semiconductor and later onsemi. The "CT" suffix identifies the common TO-220 through-hole package, widely used in industrial and bench designs. As part of the 7812 family, it became a standard building block in linear power supplies, control systems, and embedded electronics where dependable 12V regulation was required.
Key Features
- Fixed +12V positive voltage regulator
- Three-terminal design: input, ground, output
- TO-220 through-hole package ("T" designation)
- Commercial temperature range indicated by "C" suffix
- Ripple rejection rated 60dB at 1kHz
- Designed for linear power supply applications
- Motorola "MC" prefix heritage device
- Part of the widely adopted 7812 regulator family
Applications
- 12V regulated rails in industrial control panels
- Linear bench power supply builds
- Repair or restoration of legacy electronics using MC7812CT
- Embedded systems requiring fixed 12V output
- Audio and signal processing power sections
- Educational demonstrations of linear regulation
- Prototyping projects using standard TO-220 footprints
Frequently Asked Questions
Is this compatible with other 7812 regulators?
Yes. The MC7812CT follows the standard 7812 three-terminal configuration in a TO-220 package. It is commonly used as a drop-in replacement where a 12V fixed positive regulator is specified.
What does the "CT" suffix mean?
The "C" indicates the commercial temperature range, and the "T" identifies the TO-220 plastic through-hole package style.
What does the 60dB (1kHz) specification refer to?
This refers to ripple rejection performance at 1kHz, indicating how effectively the regulator suppresses AC ripple from the input supply.
Is this still manufactured under the Motorola name?
Motorola's semiconductor division became ON Semiconductor in 1999 and later rebranded to onsemi. Motorola-branded units represent earlier production from that original lineage.
Motorola's 78xx regulators powered control cabinets, lab gear, and production lines for decades. If your design calls for a straightforward 12V linear rail in a classic TO-220 footprint, this piece carries that original lineage forward.
