SC7812CTG Linear Voltage Regulator - Equivalent & Substitute Parts

Part Overview

The SC7812CTG is a linear voltage regulator IC from onsemi designed to provide a fixed positive 12V output at 1A current capacity in a TO-220-3 package. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The SC7812CTG serves applications requiring stable 12V regulation from input sources up to 30V, with through-hole mounting suitable for legacy and industrial applications.

Substiute Parts

SC7812CTG

onsemiIn Stock: 751SC7812CTG Datasheet

Current PartRFQ

L7812CV

UMWIn Stock: 27581L7812CV Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SC7812CTG are identified based on the following critical parameters that determine functional equivalence:

• Fixed output voltage of 12V
• Positive output configuration
• TO-220-3 package / case format
• Through-hole mounting type
• Output current capability of 1A or greater
• Maximum input voltage of 30V or greater
• ROHS3 compliance for regulatory alignment

The L7812CV from UMW meets all substitution criteria. It maintains identical output voltage and package specifications while providing enhanced current capacity (1.2A versus 1A) and extended input voltage rating (35V versus 30V), ensuring compatibility with existing circuit designs while offering improved performance margins.

Parameter Comparison

Engineering Selection Recommendations

The L7812CV is the direct active substitute for the obsolete SC7812CTG. Both devices maintain identical electrical output specifications (12V fixed positive output) and physical form factor (TO-220-3 through-hole package), ensuring pin-compatible replacement without circuit modification.

The L7812CV offers superior specifications: increased output current capacity (1.2A versus 1A), higher maximum input voltage rating (35V versus 30V), and integrated over-temperature and short-circuit protection. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new production.

The L7812CV is currently in active production with substantial inventory availability (27,570 units), providing supply chain continuity for designs requiring 12V linear regulation in TO-220 packages.

Frequently Asked Questions (FAQ)

Q: Can the L7812CV directly replace the SC7812CTG without circuit changes?

A: Yes. Both devices are pin-compatible TO-220-3 packages with identical 12V fixed positive output specifications. No circuit modifications are required for direct substitution.

Q: What are the key differences between these parts?

A: The L7812CV provides higher output current (1.2A versus 1A), extended input voltage range (35V versus 30V), integrated protection features (over-temperature and short-circuit), and active product status with full supply availability.

Q: Does the L7812CV fit the same PCB footprint?

A: Yes. Both parts use the TO-220-3 package with identical pin spacing and through-hole mounting requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the SC7812CTG and L7812CV are ROHS3 compliant and REACH unaffected.

Q: What is the operating temperature range difference?

A: The SC7812CTG operates from 0°C to 125°C, while the L7812CV operates from -40°C to 105°C. The L7812CV provides extended low-temperature operation but slightly reduced maximum temperature rating.

Q: Why is the SC7812CTG obsolete?

A: The SC7812CTG has been discontinued by onsemi. The L7812CV from UMW provides equivalent functionality with active production status and improved specifications.