Mechanical Dimensions & Land Pattern (SMD-37P)
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-37P | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — MRF24WN0MB-I/RM100 (SMD-37P)
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of MRF24WN0MB-I/RM100 (SMD-37P)?
Manufactured by MICROCHIP, the MRF24WN0MB-I/RM100 is housed in a SMD-37P package with 37 pins and a 1.27 mm lead pitch, supporting a VCC supply range of 3.15V to 3.45V. Key pins include: 1 (GND: Ground Reference Pin (GND)), 2 (TEST: Multiplexed I/O & Peripheral Pin TEST (General)), 3 (GND: Ground Reference Pin (GND)), 4 (VDD: Power Supply Input (VDD — 3.15V to 3.45V)), 5 (NC: Multiplexed I/O & Peripheral Pin NC (General)), 6 (NC: Multiplexed I/O & Peripheral Pin NC (General)).
What are the IPC-7351B PCB Footprint dimensions for MRF24WN0MB-I/RM100?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), MRF24WN0MB-I/RM100 (SMD-37P) has a nominal body envelope of 17.78 × 26.67 mm, pitch e = 1.27 mm, and 37 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for MRF24WN0MB-I/RM100?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for MRF24WN0MB-I/RM100 (MICROCHIP, SMD-37P) 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 (37 pins) & MRF24WN0MB Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 2 | TEST | Digital_IO | Signal terminal TEST (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: TEST. Supported peripheral buses: General. |
| 3 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 4 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 3.15V to 3.45V domain (Max rating: 3.45V). |
| 5 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 6 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 7 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 8 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 9 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 10 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 11 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 12 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 13 | SPI_CLK | Digital_IO | Signal terminal SPI_CLK (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: SPICLOCKINPUT. Supported peripheral buses: SPI. |
| 14 | SPI_MISO | Digital_IO | Signal terminal SPI_MISO (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: SPI. Supported peripheral buses: SPI. |
| 15 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 3.15V to 3.45V domain (Max rating: 3.45V). |
| 16 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 17 | TEST | Digital_IO | Signal terminal TEST (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: TEST. Supported peripheral buses: General. |
| 18 | TEST | Digital_IO | Signal terminal TEST (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: TEST. Supported peripheral buses: General. |
| 19 | HIBERNATE | Digital_IO | Signal terminal HIBERNATE (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: HIBERNATE. Supported peripheral buses: General. |
| 20 | SPI_INT | Digital_IO | Signal terminal SPI_INT (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: SPI. Supported peripheral buses: SPI. |
| 21 | MODE0 | Digital_IO | Signal terminal MODE0 (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: MODE0. Supported peripheral buses: General. |
| 22 | SPI_MOSI | Digital_IO | Signal terminal SPI_MOSI (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: SPIDATAINPUT. Supported peripheral buses: SPI. |
| 23 | SPI CS/MODE1_ | Digital_IO | Signal terminal SPI CS/MODE1_ (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: SPICHIPSELECT. Supported peripheral buses: SPI. |
| 24 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 25 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 26 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 27 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 28 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 29 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 30 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 31 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 32 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 33 | NC | NC | Signal terminal NC (I/O, 3.15V to 3.45V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 34 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 35 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 3.15V to 3.45V domain (Max rating: 3.45V). |
| 36 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 37 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |











