12V 6A AC-DC Power Supply, 2.1 x 5.5mm Center Positive | SW-126A
Discontinued: Part SW-126A has been discontinued. This listing is retained for specification reference and to help you compare alternatives.
Alternative Power Supply
Part SW-12125P: regulated 12V DC output up to 12.5A (150W), 100–240V AC input, and a 2.1mm x 5.5mm center-positive barrel plug. Its larger enclosure measures 6.5 x 2.5 x 1.5 inches. Consider it only after verifying your equipment’s voltage, polarity, connection, and current requirements, including startup demand, and the current ratings of all connectors and wiring. Higher current capacity alone does not establish compatibility.
Regulated 12V 6A AC-DC Switching Power Supply | Part SW-126A
Part SW-126A is a regulated switching desktop power supply that converts a wide 100–240V AC input range to a fixed 12V DC output at up to 6000mA (6A). It connects through a 2.1mm x 5.5mm center-positive barrel plug for compatible DC electronics. The wide voltage range refers to the AC input, not an adjustable output.
Technical Specifications
- Part: SW-126A
- Input Voltage: 100–240V AC
- Output Voltage: 12V DC, fixed
- Output Current: 6000mA (6A) maximum
- Connector: 2.1mm inner diameter x 5.5mm outer diameter barrel plug
- Polarity: Center positive (+)
- Supply Type: Regulated switching AC-DC power supply
- Form Factor: Desktop
Compatibility & Setup
Before using Part SW-126A as a replacement supply, compare the device label, original adapter, or manufacturer’s specifications. The equipment must require 12V DC, use a matching 2.1mm x 5.5mm center-positive connection, and have current requirements, including startup demand, within the supply’s 6A rating. Confirm that the connector, wiring, and installation are suitable for the intended current.
Device category or brand alone does not establish compatibility. Do not substitute this supply for equipment requiring AC output, another DC voltage, a different connector, center-negative polarity, or more than 6A.
Frequently Asked Questions
Does the wide voltage range mean the DC output is adjustable?
No. The input accepts 100–240V AC, while the output is fixed at 12V DC. It is not a selectable-voltage adapter or adjustable bench power supply.
Can I use this with a device that draws less than 6A?
A compatible device draws the current it needs. A lower-current device may be suitable if it also requires 12V DC, uses a matching 2.1mm x 5.5mm center-positive connection, and meets all other equipment requirements. Current capacity alone does not establish compatibility.
What connector and polarity does it use?
The barrel plug measures 2.1mm inner diameter x 5.5mm outer diameter and has center-positive polarity. Check both dimensions and polarity before connecting.
Is this a 12V AC or 12V DC power supply?
Part SW-126A accepts AC input and provides regulated 12V DC output. It is not a replacement for a supply that outputs 12V AC.
IMPORTANT: Verify the device’s required DC voltage, current, connector dimensions, and polarity before connecting. Incorrect voltage, polarity, or an unsuitable connection can damage equipment. Do not exceed the supply’s 6A maximum or the ratings of the device, connector, or wiring.
