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MC7912BD2TG is listed in the Voltage Regulators - Linear, Low Drop Out (LDO) Regulators range at ChipApex. The manufacturer field lists onsemi. Its product description is IC REG LINEAR -12V 1A D2PAK-3. Review the specifications below when checking this part for your BOM.
The MC7912BD2TG is a fixed negative linear voltage regulator from the onsemi MC79xx series, designed for applications requiring stable -12V DC output. It delivers a maximum output current of 1A and operates within an input voltage range of -13.3V to -40V. The device features internal thermal overload and short-circuit current limiting protection. It is housed in a D2PAK-3 (TO-263) surface-mount package, suitable for through-hole or SMT mounting, with a specified operating temperature range of -40°C to +125°C.
Verify the exact suffix against the manufacturer's latest datasheet to confirm pinout compatibility and thermal pad specifications. Ensure the procurement source provides valid RoHS compliance documentation. Cross-reference the part number with official distributor catalogs to avoid counterfeit components. Confirm that the D2PAK-3 package dimensions match your PCB footprint requirements before finalizing orders.
Select this component when a stable negative voltage rail is required for analog circuits. The D2PAK-3 package offers improved thermal dissipation compared to smaller SOT packages. Consider the minimum dropout voltage relative to your input supply. Verify that the load current does not exceed 1A under worst-case thermal conditions. This regulator is suitable for general-purpose power management where high precision is not critical.
This part belongs to the widely used MC79xx family of negative linear regulators. It serves as a complement to the positive MC78xx series, enabling dual-polarity power supplies. The MC7912 variant specifically targets -12V applications common in mixed-signal electronics. Its robust construction supports reliable operation in demanding environments.
Compatible substitutes include MC7912CD2TG and MC7912CD2TR4G from onsemi, which share identical electrical characteristics and pinouts. Other manufacturers offer equivalent parts such as LM7912 in D2PAK packages. Verify thermal resistance values and pin configuration compatibility before substitution.
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