DC JACK

📌 Key Features

⚡ Direct Current (DC) Input

• Designed specifically for DC (Direct Current) power, which is the type of electricity used by most small and medium electronic devices.

• Ensures proper direction of current flow into the device.

🧩 Connector Type

• Typically consists of a female socket mounted on a device’s circuit board or chassis.

• Matches a male plug (barrel/round connector) from a power adapter.

📏 Standard Sizes

• DC jacks and plugs come in standard sizes (diameter and inner pin spacing) such as 2.1 mm, 2.5 mm, 5.5 mm, etc.

• Size must match the power adapter plug for proper connection.

🔐 Secure Connection

• The design often includes a barrel socket with an inner pin to ensure solid electrical contact and prevent accidental disconnection.

• Can include locking features or strain relief for durability.

🛠️ Mounting Styles

• Panel Mount: Installed through a cutout on a device’s housing or chassis.

• PCB Mount: Soldered directly onto a printed circuit board inside the device.

⚙️ Power Specifications

• Each DC jack is rated for a specific voltage and current (e.g., 12 V 2 A).

• Choosing a DC jack with the correct rating ensures safe and reliable operation without overheating.

📷 Typical Components

• Outer Barrel Socket: Receives the plug’s outer metal sleeve.

• Inner Contact (Pin): Connects to the plug’s center pin/lead to complete the circuit.

• Mounting Tabs/Leads: For securing the jack to the chassis or PCB.

• Insulating Body: Made of plastic or polymer to keep the contacts isolated.

💡 Where It’s Used

✔ Laptops and notebooks

✔ Routers, modems, and network devices

✔ Portable audio/video equipment

✔ CCTV cameras

✔ LED lighting systems

✔ Printers, scanners, and POS machines

✔ Embedded electronics and DIY projects

📊 Why DC Jacks Matter

• They ensure safe delivery of power into electronic devices.

• Provide a standardized interface for external power adapters.

• Allow easy plug‑in and removal of power sources without soldering.