Xmost M12 B-coded female front mount PCB socket provides a panel interface for PROFIBUS equipment and industrial fieldbus modules. It accepts a compatible M12 B-coded male cable connector and connects to the internal circuit board through straight PCB solder contacts.
This front fastened M12 panel mount socket combines a threaded external cable connection with board termination inside the enclosure. PG9 and M16 × 1.5 panel mounting options accommodate different housing designs.
The 5-pin B-coded connector is available with grounded or ungrounded construction and optional shielding. Specify grounding and shielding separately to match the fieldbus equipment’s connection requirements.
Key Features
- 5-pin PROFIBUS interface: B-coded female connection for compatible industrial fieldbus cable assemblies.
- Front mount construction: Front fastened panel installation with PCB contacts behind the enclosure.
- PCB dip-solder termination: Straight insertion contacts connect the socket to the equipment’s circuit board.
- Two panel thread options: PG9 or M16 × 1.5 mounting, with an M12 × 1.0 mating interface.
- Grounding and shielding choices: Grounded/ungrounded and shielded/unshielded versions.
- Listed electrical ratings: 4 A rated current and 60 V rated voltage.
Product Dimensions

[Insert the female front mount outline drawing and corresponding panel cut-out drawing from page 6.]
Illustrated PG9 Front Mount Version — Dimensions in mm
| Item | Drawing Value |
|---|---|
| Mating thread | M12 × 1.0 |
| Panel mounting thread shown | PG9 |
| Body dimension shown, excluding PCB contacts | 20 |
| Upper axial section | 7 |
| Middle axial section | 9 |
| Lower axial section | 2.5 |
| Upper wrench size | SW13.4 |
| Mounting nut wrench size | SW17.9 |
| Rear contact section | 6 |
| Contact tip section | 3 |
| PCB contact diameter, 5-pin version | Ø1.0 |
Needle Arrangement (Front View)

[Insert the B-coded 5-pin female needle arrangement diagram from page 6.]
The diagram shows the female mating-face view with contacts numbered 1–5. Use this arrangement to identify contacts and match the external B-coded male connector. Assign fieldbus signals according to the equipment schematic.
Product Specifications
| Parameter | Specification |
|---|---|
| Product type | M12 B-coded female front mount PCB socket |
| Application type | PROFIBUS / industrial fieldbus |
| Mounting | Front fastened |
| Contact count | 5 pins |
| Termination | PCB dip soldering |
| Standard listed | IEC 61076-2-101 |
| Rated current | 4 A |
| Rated voltage | 60 V |
| Grounding options | Grounded / ungrounded |
| Shielding options | Shielded / unshielded |
| Mating thread | M12 × 1.0 |
| Panel mounting threads | PG9 / M16 × 1.5 |
| Insulation resistance | ≥100 MΩ |
| Contact resistance | ≤5 mΩ |
| Recommended coupling torque | 0.4 N·m |
| Maximum coupling torque | 0.8 N·m |
| Temperature range, flexible use | −25°C to +80°C |
| Temperature range, static use | −40°C to +80°C |
| Wire gauge listed in catalogue | 0.34 mm² / AWG22 |
| Protection ratings listed | IP67 / IP68 |
| Pollution degree | 3 |
| Insulator materials listed | PA66+GF / TPU+GF |
Applications
- PROFIBUS fieldbus modules: Connects an external B-coded cable to internal communication electronics.
- Distributed I/O equipment: Provides a panel mount fieldbus interface with direct PCB termination.
- Industrial communication units: Integrates a detachable M12 cable connection into the equipment housing.
- Machine automation panels: Suits assemblies requiring front fastened connectors and board-level connections.
Selection and Ordering
| Selection Item | Available Choices |
|---|---|
| Interface | M12 B-coded female, 5-pin |
| Mounting style | Front mount |
| Panel mounting thread | PG9 / M16 × 1.5 |
| Termination | PCB dip soldering |
| Grounding | Grounded / ungrounded |
| Shielding | Shielded / unshielded |
Example enquiry: M12 B-coded female front mount PROFIBUS PCB socket, 5-pin, PG9 mounting, grounded construction, shielded version.






