Enterprise Multi-WAN Gigabit Router Reference Design
An illustrative reference design for multi-WAN wired routers in SMB branches and retail stores: 2 × SFP optical WAN, 8 × Gigabit copper ports (WAN/LAN configurable, PoE+ output on GE1–4), USB 2.0 and a Console management port, powered by a 54V DC adapter. The 8 copper ports show two magnetics options side by side: PoE RJ45 with integrated magnetics and discrete dual-port Gigabit transformers. Each position is marked with the VOOHU parts available, recommended part numbers and package pinouts.
Illustrative PCB ⇄ Schematic
Illustrative top-side view arranged by functional zone (not the actual layout). Red numbered dots mark positions VOOHU can supply. Click a component on the board, an entry in the index below or a part in the schematic to see recommended parts and package pinouts on the right.
Illustrative SFP1 optical port topology: the SGMII transmit / receive pairs of the processor connect through AC-coupling capacitors to TD± / RD± of the SFP 20-pin connector (per SFF-8431 MSA), and the control and status lines (I²C, TX_DISABLE, MOD_ABS, RX_LOS) go directly to processor GPIOs; the module's VccT / VccR are filtered from +3V3 by the VOOHU molded inductor L1 and bypass capacitors. Each pair is drawn as one line; coupling capacitors and pull-ups are drawn as symbols without values.
Board bill of materials
Summarized by position; click any row to locate it on the board above.
| No. | Zone | Position | Ref. | VOOHU category | Recommended part | Availability |
|---|---|---|---|---|---|---|
| 01 | A Optical WAN | SFP cage + 20-pin connector ×2 | J1 J2 | SFP Cage / SFP Connectors | WHSFP00211W018 | VOOHU |
| 02 | A Optical WAN | SFP supply filter inductors ×2 | L1 L2 | Molded Inductors | WHYTA0420 series | VOOHU |
| 03 | B Gigabit ports · PoE | PoE RJ45 with integrated magnetics 1×4 (GE1–4) | J3 | RJ45 with Integrated Magnetics | SYT414Q199DB2A2DP057 | VOOHU |
| 04 | B Gigabit ports · PoE | Plain RJ45 1×4 (GE5–8) | J4 | RJ45 Connector | SYT561488AB1A3DY1027 | VOOHU |
| 05 | B Gigabit ports · PoE | Port gas discharge tubes ×2 | GDT1 GDT2 | GDT | WHGD090V1P0B | VOOHU |
| 06 | B Gigabit ports · PoE | Gigabit LAN transformers ×2 (GE5–8) | T1 T2 | 10/100/1000 BASE-T | WHSG48001G | VOOHU |
| 07 | B Gigabit ports · PoE | Ethernet ESD arrays (2 per port) | D1 D2 D3 D4 D5 D6 D7 D8 | TVS ESD | WHALD03G4U | VOOHU |
| 08 | B Gigabit ports · PoE | PoE PSE controller | U4 | — | — | Non-VOOHU |
| 09 | C Switch IC | 8-port Gigabit switch | U2 | Ethernet Switch | JL6110-PC | VOOHU |
| 10 | C Switch IC | 25MHz crystal | Y1 | — | — | Non-VOOHU |
| 11 | D Management | USB 2.0 A receptacle | J5 | USB / Type-C | WH127272040004H4G | VOOHU |
| 12 | D Management | USB ESD array | D9 | TVS ESD | WHTA5V01P2C | VOOHU |
| 13 | D Management | USB signal line common-mode choke | L3 | Signal Line Common Mode Chokes | WHAC-2012A-900T0 | VOOHU |
| 14 | D Management | Console RJ45 | J6 | RJ45 Connector | WH56A11810011101 | VOOHU |
| 15 | D Management | RS-232 level shifter | U5 | — | — | Non-VOOHU |
| 16 | E Power | 54V DC jack | J7 | — | — | Non-VOOHU |
| 17 | E Power | Bidirectional input TVS | D10 | TVS ESD | WHTB058VA | VOOHU |
| 18 | E Power | Power-line common-mode choke (EMI) | L4 | Power Line Common Mode Chokes | WHACM07A40R701 | VOOHU |
| 19 | E Power | Flyback controller | U6 | — | — | Non-VOOHU |
| 20 | E Power | PoE power transformer (54V → 12V) | T3 | PoE Power Transformers | WH300F-12L | VOOHU |
| 21 | E Power | Synchronous bucks ×3 | U7 U8 U9 | — | — | Non-VOOHU |
| 22 | E Power | Molded inductors ×3 (DC-DC) | L5 L6 L7 | Molded Inductors | WHYT0630 series | VOOHU |
| 23 | F Core processor | Multi-core network processor SoC | U1 | — | — | Non-VOOHU |
| 24 | F Core processor | DDR4 memory ×2 | U10 U11 | — | — | Non-VOOHU |
| 25 | F Core processor | NAND Flash | U12 | — | — | Non-VOOHU |
Resources & downloads
Board bill of materials
Reference designators, zones, VOOHU categories, recommended parts and availability for all 25 positions. Opens directly in Excel.
Datasheet collection
Datasheet PDFs for the VOOHU parts recommended on this board.
Design files & footprint library
Schematic, PCB, and VOOHU part footprints and 3D models.
Coming soonRequest the enterprise multi-WAN Gigabit router reference design full package
Includes the full-board BOM, datasheets for the recommended VOOHU parts and position-by-position selection notes. For advice tailored to your port count, PoE power or magnetics option, note it in your requirements.
