What MOSFET BIQU116-A2 Is For

MOSFET BIQU116-A2 is a replacement part and upgrade for BIQU 3D printers and other compatible machines that require a 4-wire heated bed connection. The board is intended for heat bed wiring in the NEG-POS-POS-NEG configuration.

This replacement MOSFET is not for 3-wire bed wiring. For a 3 wire bed connection listed as NEG-POS-NEG, the specified alternative is a Creality Bed MOSFET.

Key Features and Benefits

• Built for 4-wire heated bed setups: supports systems that use a NEG-POS-POS-NEG bed connection format.
• Suitable as a replacement part: intended for BIQU 3D printers and other compatible machines using the same wiring layout.
• Usable as an upgrade part: fits applications where a dedicated MOSFET board is required for the heated bed connection.
• Clear connector mapping: the product description provides left-to-right connection order for both J1 and J2 while facing the connectors.

Connector Layout for Installation Reference

The connection order is specified left to right while facing the board connectors.

• J1: Bed Out (-), Bed Out (+), PSU in (+), PSU in (-)
• J2: Pin D8, Ground, Bed Signal from Control board in (+), Bed Signal from Control board in (-)

Use Cases for BIQU and Other 4-Wire Heated Bed Systems

This MOSFET board is suited to replacing a failed or existing heated bed MOSFET in BIQU printers that use 4-wire bed wiring. It is also relevant for other 3D printer setups that need the same NEG-POS-POS-NEG connection format and matching control board signal arrangement.

For users identifying bed wiring before installation, the listed J1 and J2 pin order helps confirm whether the MOSFET matches the printer's heated bed and control board connections.