12V 1.25A AC-DC Power Supply, 2.1mm x 5.5mm Center Positive | SW-1212C
Regulated 12V 1.25A AC-DC Switching Power Supply | Part SW-1212C
The SW-1212C is a regulated AC-DC switching power supply that converts 100-240V AC input to a stable 12V DC @ 1250mA (1.25A) output. It has a 2.1mm x 5.5mm center-positive barrel plug and a desktop form factor for compatible low-voltage electronics, lighting, security, networking, and hobby equipment.
Technical Specifications
- Part Number: SW-1212C
- Input: 100-240V AC
- Output: 12V DC
- Output Current: 1250mA (1.25A) maximum
- Output Power: 15W maximum
- Connector: 2.1mm inner diameter x 5.5mm outer diameter DC barrel plug
- Polarity: Center positive (+)
- Type: Regulated switching power supply
- Form Factor: Desktop
Compatible Devices & Common Use Cases
Use the SW-1212C with equipment whose label or original adapter specifies 12V DC, a maximum draw of 1.25A, a 2.1mm x 5.5mm barrel connection, and center-positive polarity. Common device classes may include:
- 12V LED light strips, small LED projects, and LED controllers up to 15W
- 12V DC CCTV and security cameras with a matching barrel connector
- Selected routers, modems, and networking equipment requiring 12V DC
- Small control electronics, sensors, and automation devices
- Hobby, maker, and bench electronics projects requiring regulated 12V DC
Compatibility Check
Before ordering, compare the device label and original adapter. The voltage must be 12V DC, the device must use no more than 1.25A, the plug must be 2.1mm x 5.5mm, and the polarity must be center positive. Do not substitute this for a device requiring 12V AC, a different barrel size, center-negative polarity, or more than 1.25A. A compatible device may draw less than the adapter's rated current.
Why a Regulated Switching Power Supply?
A regulated switching design provides a controlled 12V DC output for compatible electronics while keeping the adapter compact and efficient. The 15W maximum output is suitable for lower-power 12V equipment when the device's electrical specifications and connector match.
Frequently Asked Questions
What are the output specifications of Part SW-1212C?
It provides regulated 12V DC at up to 1250mA (1.25A), or 15W maximum, through a 2.1mm x 5.5mm center-positive barrel plug.
Can I use this with a 12V device that draws less than 1.25A?
Yes, provided the device also uses DC input, a 2.1mm x 5.5mm connector, and center-positive polarity. The device should not require more than 1.25A.
Is this a 12V AC or 12V DC power supply?
This adapter accepts 100-240V AC input and supplies 12V DC output. It is not a replacement for a device that requires 12V AC.
What is the plug size and polarity?
The plug is 2.1mm inner diameter x 5.5mm outer diameter, center positive. Verify both size and polarity against the device before connecting it.
Can I use it for 12V LED lighting?
It may work for a 12V LED strip, controller, or small LED project when the total load is 15W or less and the connector and polarity match. Higher-power lighting needs a higher-rated supply.
Will it work outside the United States?
The 100-240V AC input supports many regional mains voltages. The wall plug format may require a country-specific plug adapter.
