Mechanical Dimensions & Land Pattern (SMD,10.6x10.2mm)
Extracted from Datasheet & IPC-7351B NormalizedRecommended Companion BOM & Drop-In Equivalents
Passive external components per reference schematic and 1:1 pin-compatible alternatives| Designator / Replacement MPN | Value / Package | Function & PCB Layout Rule |
|---|---|---|
| N/A BOM | Per application circuit SMD,10.6x10.2mm | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — BLE-SER-A-ANT (SMD,10.6x10.2mm)
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of BLE-SER-A-ANT (SMD,10.6x10.2mm)?
Manufactured by WCH, the BLE-SER-A-ANT is housed in a SMD,10.6x10.2mm package with 8 pins and a 1.27 mm lead pitch. Key pins include: 1 (BLE_MODE: Multiplexed I/O & Peripheral Pin BLE_MODE (General)), 2 (VCC: Power Supply Input (VCC — 3.3V / 5.0V Standard Logic)), 3 (GND: Ground Reference Pin (GND)), 4 (RELOAD/LED: Multiplexed I/O & Peripheral Pin RELOAD/LED (General)), 5 (RTS#: RTS# (UART)), 6 (CTS: CTS (UART)).
What are the IPC-7351B PCB Footprint dimensions for BLE-SER-A-ANT?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), BLE-SER-A-ANT (SMD,10.6x10.2mm) has a nominal body envelope of 10.20 × 10.60 mm, pitch e = 1.27 mm, and 8 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for BLE-SER-A-ANT?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for BLE-SER-A-ANT (WCH, SMD,10.6x10.2mm) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.
Static Reference Appendix: Pinout Table (8 pins) & BLE Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | BLE_MODE | Digital_IO | Signal terminal BLE_MODE (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: BLE_MODE. Supported peripheral buses: General. |
| 2 | VCC | Power_In | Primary positive power supply input (VCC) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| 3 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 4 | RELOAD/LED | Digital_IO | Signal terminal RELOAD/LED (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: RELOAD/LED. Supported peripheral buses: General. |
| 5 | RTS# | Digital_IO | MODEM hardware flow-control output signal (DTR# / RTS# active-low); commonly used for ESP32/Arduino auto-reset/bootloader entry. |
| 6 | CTS | Digital_IO | MODEM hardware flow-control handshake input signal (active-low: CTS# / DSR# / RI# / DCD#). |
| 7 | TXD | Digital_IO | Signal terminal TXD (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: TXD. Supported peripheral buses: UART. |
| 8 | RXD | Digital_IO | Signal terminal RXD (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: RXD. Supported peripheral buses: UART. |












