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KA7812A
PSFM3 Fixed Positive Standard Regulator, 12V BIPolar, TO-220, 3 PIN
KA7812A
PSFM3 Fixed Positive Standard Regulator, 12V BIPolar, TO-220, 3 PIN
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Service & Packaging
Service & Packaging
About After Sales Service
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KA7812A DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
The KA78XX/KA78XXA series of three-terminal positive regulator are available in the TO-220/D-PAK package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.Features• Output Current up to 1A• Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V• Thermal Overload Protection• Short Circuit Protection• Output Transistor Safe Operating Area Protection
Key Features
- Output Current up to 1A
- Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V
- Thermal Overload Protection
- Short Circuit Protection
- Output Transistor Safe Operating Area Protection
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Rohs Code | Yes | Part Life Cycle Code | Obsolete |
| Part Package Code | SFM | Pin Count ! | 3 |
| Reach Compliance Code | ECCN Code | EAR99 | |
| HTS Code ! | 8542.39.00.01 | Adjustability | FIXED |
| Dropout Voltage1-Nom | 2 V | Input Voltage Absolute-Max | 35 V |
| Input Voltage-Max | 30 V | Input Voltage-Min | 14.8 V |
| JESD-30 Code | R-PSFM-T3 | JESD-609 Code | e3 |
| Line Regulation-Max | 0.12% | Load Regulation-Max | 0.1% |
| Number of Functions | 1 | Number of Outputs | 1 |
| Number of Terminals | 3 | Operating Temperature TJ-Max | 125 °C |
| Operating Temperature TJ-Min | Output Current1-Max | 1 A | |
| Output Voltage1-Max | 12.5 V | Output Voltage1-Min | 11.5 V |
| Output Voltage1-Nom | 12 V | Package Body Material | PLASTIC/EPOXY |
| Package Code | TO-220 | Package Equivalence Code | SIP3,.1TB |
| Package Shape | RECTANGULAR | Package Style | FLANGE MOUNT |
| Qualification Status ! | Not Qualified | Regulator Type | FIXED POSITIVE SINGLE OUTPUT STANDARD REGULATOR |
| Surface Mount ! | NO | Technology | BIPOLAR |
| Terminal Finish | MATTE TIN | Terminal Form ! | THROUGH-HOLE |
| Terminal Pitch ! | 2.54 mm | Terminal Position | SINGLE |
| Voltage Tolerance-Max | 4% |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is KA7812A?
The KA7812A is a fixed 12V voltage regulator integrated circuit (IC) manufactured by Fairchild Semiconductor. It is designed to provide a stable 12V output voltage from a higher input voltage source, making it suitable for various power supply and voltage regulation applications.
How Does KA7812A Work?
The KA7812A works by taking an input voltage that is higher than 12V and regulating it down to a stable 12V output. It does this through internal circuitry that compares the output voltage to a reference and adjusts the internal pass transistor to maintain a constant output voltage. This provides a consistent and reliable 12V supply for connected circuitry.
How Many Pins does KA7812A have and What are the Functions of the Pinout Configuration?
The KA7812A is housed in a standard 3-pin TO-220 package. The pinout configuration includes:
- Input (Vin): The input pin for the higher voltage source.
- Ground (GND): The ground pin for the regulator.
- Output (Vout): The regulated 12V output pin.
What are the Pros and Cons of KA7812A?
Pros:
- Fixed Output Voltage: Provides a stable 12V output, eliminating the need for external voltage regulation circuitry.
- Simple to Use: Requires minimal external components for basic voltage regulation applications.
- Thermal Protection: Includes built-in thermal shutdown protection to prevent IC damage due to overtemperature conditions.
- Cost-Effective: Offers a cost-effective solution for generating a regulated 12V supply.
Cons:
- Fixed Output Voltage: The fixed 12V output may not be suitable for applications requiring variable output voltage.
- Heat Dissipation: In applications with high input-output differentials, the regulator may require a heat sink for proper heat dissipation.
- Power Dissipation: The regulator may dissipate significant power and generate heat, especially when dropping a high input voltage to 12V.
Are There Any Equivalents/Alternatives to KA7812A for Recommendation?
- The LM7812 from Texas Instruments is an equivalent to the KA7812A with similar electrical characteristics.
- Alternatives to the KA7812A include the UA7812 from STMicroelectronics and the L7812CV from STMicroelectronics.
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