MICRO USB straight insertion flat port

Micro USB Straight Insertion Flat Port

The Micro USB straight insertion flat port is a vertical-mount Micro USB receptacle that combines a straight (180°) mating direction with a flat mating face. The "flat port" designation indicates that the insertion opening sits flush with the top surface of the connector body, without raised rims, rolled edges, or crimped lips.

Design and Construction

This connector is a standard 5-pin Micro USB Type-B female receptacle designed for vertical mounting on a PCB, meaning the cable inserts straight down from above the board rather than from the side. The flat port refers to the clean, low-profile mating interface — the metal shell terminates level with or slightly below the housing surface, giving the connector a smooth, minimalist appearance.

The flat design offers several practical advantages. First, it provides a lower overall profile, which is valuable in slim or compact devices where vertical clearance is limited. Second, the absence of protruding rims simplifies the housing or panel opening, reducing tooling complexity and cost. Third, the flush face minimizes the risk of snagging or dust accumulation around the port opening, making it easier to clean and maintain.

The connector is typically available in both SMT (surface-mount) and through-hole (DIP) versions, often with locating pegs or board locks to secure it against vertical insertion forces. The housing is commonly made of high-temperature LCP or PA9T plastic, while the shell is made of copper alloy or stainless steel with tin or nickel plating.

Key Characteristics

• Contact Count: 5 pins (standard Micro USB pinout)

• Mounting Orientation: Vertical / straight insertion (180°)

• Mating Face: Flat, with no rolled or crimped rim

• Height Above Board: Commonly 4.5 mm to 5.2 mm, depending on model

• Rated Current: Up to 1.8 A to 3 A

• Rated Voltage: 30 V AC/DC

• Operating Temperature: -30°C to +85°C

• Mating Cycles: 3,000 to 10,000 cycles

• Materials: LCP or PA9T housing (UL 94V-0), copper alloy terminals with gold or tin plating, copper alloy or stainless steel shell

• Packaging: Tape and reel, tube, or tray

Applications

The flat straight-insertion design is well suited to compact and slim electronic devices where a low profile and clean exterior are important. Common applications include power banks, Bluetooth earphones, portable speakers, wearable devices, electronic cigarettes, small chargers, and embedded control boards. The vertical orientation is particularly useful when the PCB is mounted parallel to the device's outer casing, allowing the charging port to face directly outward with minimal depth requirements and a neat, flush appearance.