Mechanical Dimensions & Land Pattern (QFN-16-EP(4x4))
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 QFN-16-EP(4x4) | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — MCP4261-104E/ML (QFN-16-EP(4x4))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of MCP4261-104E/ML (QFN-16-EP(4x4))?
Manufactured by MICROCHIP, the MCP4261-104E/ML is housed in a QFN-16-EP(4x4) package with 17 pins and a 0.50 mm lead pitch, supporting a VCC supply range of 2.7V to 5.5V. Key pins include: 1 (CS: Multiplexed I/O & Peripheral Pin CS (SPI)), 2 (SCK: Multiplexed I/O & Peripheral Pin SCK (SPI)), 3 (SDI: Multiplexed I/O & Peripheral Pin SDI (SPI)), 4 (VSS: Ground Reference Pin (VSS)), 5 (P0W: Multiplexed I/O & Peripheral Pin P0W (General)), 6 (P0B: Multiplexed I/O & Peripheral Pin P0B (General)).
What are the IPC-7351B PCB Footprint dimensions for MCP4261-104E/ML?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), MCP4261-104E/ML (QFN-16-EP(4x4)) has a nominal body envelope of 4.00 × 4.00 mm, pitch e = 0.50 mm, and 17 copper pads plus a central exposed thermal pad (EPAD) of 2.70 × 2.70 mm with a 60% IPC-7525 windowed solder paste grid.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for MCP4261-104E/ML?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for MCP4261-104E/ML (MICROCHIP, QFN-16-EP(4x4)) 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 (17 pins) & MCP4161 / MCP4261 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | CS | Digital_IO | Signal terminal CS (I/O, 2.7V to 5.5V domain). Multiplexed alternate functions: SPICHIPSELECTINPUT. Supported peripheral buses: SPI. |
| 2 | SCK | Digital_IO | Signal terminal SCK (I/O, 2.7V to 5.5V domain). Multiplexed alternate functions: SPICLOCKINPUT. Supported peripheral buses: SPI. |
| 3 | SDI | Digital_IO | Signal terminal SDI (I/O, 2.7V to 5.5V domain). Multiplexed alternate functions: SPISERIALDATAINPUT. Supported peripheral buses: SPI. |
| 4 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 5 | P0W | Digital_IO | Signal terminal P0W (I/O, 2.7V to 5.5V domain). Multiplexed alternate functions: P0W. Supported peripheral buses: General. |
| 6 | P0B | Digital_IO | Signal terminal P0B (I/O, 2.7V to 5.5V domain). Multiplexed alternate functions: P0B. Supported peripheral buses: General. |
| 7 | SDO | Digital_IO | Signal terminal SDO (I/O, 2.7V to 5.5V domain). Multiplexed alternate functions: SPISERIALDATAOUT. Supported peripheral buses: SPI. |
| 8 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 2.7V to 5.5V domain (Max rating: 5.5V). |
| 9 | EP | GND | Bottom exposed die attach pad (EP) providing primary thermal conduction path to the PCB and low-inductance 0V ground return. |
| 10 | P0B | Digital_IO | Signal terminal P0B (I/O, 2.7V to 5.5V domain). Multiplexed alternate functions: P0B. Supported peripheral buses: General. |
| 11 | NC | NC | Signal terminal NC (I/O, 2.7V to 5.5V domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 12 | WP# | Digital_IO | Signal terminal WP# (I/O, 2.7V to 5.5V domain). Multiplexed alternate functions: WP#. Supported peripheral buses: General. |
| 13 | SHDN# | Digital_IO | Signal terminal SHDN# (I/O, 2.7V to 5.5V domain). Multiplexed alternate functions: SHDN#. Supported peripheral buses: General. |
| 14 | SDO | Digital_IO | Signal terminal SDO (I/O, 2.7V to 5.5V domain). Multiplexed alternate functions: SPISERIALDATAOUT. Supported peripheral buses: SPI. |
| 15 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 2.7V to 5.5V domain (Max rating: 5.5V). |
| 16 | CS# | Digital_IO | Signal terminal CS# (I/O, 2.7V to 5.5V domain). Multiplexed alternate functions: CS#. Supported peripheral buses: General. |
| 17 | EP | GND | Bottom exposed die attach pad (EP) providing primary thermal conduction path to the PCB and low-inductance 0V ground return. |











![MCP4261-104E/ML (QFN-16-EP(4x4)) — MCP414X/416X/424X/426X - 8-Lead Plastic Small Outline (SN) - Narrow, 3.90 mm Body [SOIC] - Note: For the most current package drawings, please see the Microchip Packaging Specification located at | MCP414X/416X/424X/426X | DS22059B-page 72](/api/v1/assets/C184659/extracted/figures/p72_fig01.png)
