Mechanical Dimensions & Land Pattern (UQFN-36(5x5))
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 UQFN-36(5x5) | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — DSPIC33CK128MC103-I/M5 (UQFN-36(5x5))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of DSPIC33CK128MC103-I/M5 (UQFN-36(5x5))?
Manufactured by MICROCHIP, the DSPIC33CK128MC103-I/M5 is housed in a UQFN-36(5x5) package with 37 pins and a 0.50 mm lead pitch, supporting a VCC supply range of 3V to 3.6V. Key pins include: 1 (RPntiedtoUART1Transmit: Multiplexed I/O & Peripheral Pin RPntiedtoUART1Transmit (General)), 2 (IO2: General Purpose Digital I/O Pin IO2), 3 (RPntiedtoUART2Transmit: Multiplexed I/O & Peripheral Pin RPntiedtoUART2Transmit (General)), 4 (NC: No Connect (Leave Floating)), 5 (IO2: GPIO2 / RTC_GPIO2 / TOUCH2 / ADC1_CH1), 6 (IO3: GPIO3 / RTC_GPIO3 / TOUCH3 / ADC1_CH2 (JTAG Source Strap)).
What are the IPC-7351B PCB Footprint dimensions for DSPIC33CK128MC103-I/M5?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), DSPIC33CK128MC103-I/M5 (UQFN-36(5x5)) has a nominal body envelope of 5.00 × 5.00 mm, pitch e = 0.50 mm, and 37 copper pads plus a central exposed thermal pad (EPAD) of 3.70 × 3.70 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 DSPIC33CK128MC103-I/M5?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for DSPIC33CK128MC103-I/M5 (MICROCHIP, UQFN-36(5x5)) 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) & DSPIC33CK128 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | RPntiedtoUART1Transmit | Digital_IO | Signal terminal RPntiedtoUART1Transmit (I/O, 3V to 3.6V domain). Multiplexed alternate functions: RPntiedtoUART1Transmit. Supported peripheral buses: General. |
| 2 | IO2 | Digital_IO | General Purpose Digital I/O Pin IO2 |
| 3 | RPntiedtoUART2Transmit | Digital_IO | Signal terminal RPntiedtoUART2Transmit (I/O, 3V to 3.6V domain). Multiplexed alternate functions: RPntiedtoUART2Transmit. Supported peripheral buses: General. |
| 4 | NC | No_Connect | No Connect (Leave Floating) |
| 5 | IO2 | Digital_IO | GPIO2 / RTC_GPIO2 / TOUCH2 / ADC1_CH1 |
| 6 | IO3 | Digital_IO | GPIO3 / RTC_GPIO3 / TOUCH3 / ADC1_CH2 (JTAG Source Strap) |
| 7 | NC | No_Connect | No Connect (Leave Floating) |
| 8 | IO0 | Digital_IO | GPIO0 / RTC_GPIO0 (Chip Boot Mode Strapping Pin) |
| 9 | IO4 | Digital_IO | GPIO4 / RTC_GPIO4 / TOUCH4 / ADC1_CH3 |
| 10 | IO5 | Digital_IO | GPIO5 / RTC_GPIO5 / TOUCH5 / ADC1_CH4 |
| 11 | AVSS | GND | 0V electrical ground return terminal (AVSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 12 | IO7 | Digital_IO | GPIO7 / RTC_GPIO7 / TOUCH7 / ADC1_CH6 |
| 13 | IO15 | Digital_IO | GPIO15 / RTC_GPIO15 / U0RTS / ADC2_CH4 / XTAL_32K_P |
| 14 | IO16 | Digital_IO | GPIO16 / RTC_GPIO16 / U0CTS / ADC2_CH5 / XTAL_32K_N |
| 15 | RPntiedtoSCCP1Output | Digital_IO | Signal terminal RPntiedtoSCCP1Output (I/O, 3V to 3.6V domain). Multiplexed alternate functions: RPntiedtoSCCP1Output. Supported peripheral buses: General. |
| 16 | RPntiedtoSCCP2Output | Digital_IO | Signal terminal RPntiedtoSCCP2Output (I/O, 3V to 3.6V domain). Multiplexed alternate functions: RPntiedtoSCCP2Output. Supported peripheral buses: General. |
| 17 | RPntiedtoSCCP3Output | Digital_IO | Signal terminal RPntiedtoSCCP3Output (I/O, 3V to 3.6V domain). Multiplexed alternate functions: RPntiedtoSCCP3Output. Supported peripheral buses: General. |
| 18 | RPntiedtoSCCP4Output | Digital_IO | Signal terminal RPntiedtoSCCP4Output (I/O, 3V to 3.6V domain). Multiplexed alternate functions: RPntiedtoSCCP4Output. Supported peripheral buses: General. |
| 19 | IO20 | Digital_IO | GPIO20 / RTC_GPIO20 / USB_D+ / U1CTS / ADC2_CH9 |
| 20 | IO9 | Digital_IO | GPIO9 / RTC_GPIO9 / TOUCH9 / ADC1_CH8 / FSPIHD |
| 21 | RPntiedtoCAN1Output | Digital_IO | Signal terminal RPntiedtoCAN1Output (I/O, 3V to 3.6V domain). Multiplexed alternate functions: RPntiedtoCAN1Output. Supported peripheral buses: CAN. |
| 22 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 23 | IO12 | Digital_IO | GPIO12 / RTC_GPIO12 / TOUCH12 / ADC2_CH1 / FSPICLK |
| 24 | IO13 | Digital_IO | GPIO13 / RTC_GPIO13 / TOUCH13 / ADC2_CH2 / FSPIQ |
| 25 | PGC3/RP38/RB6 | Digital_IO | Signal terminal PGC3/RP38/RB6 (I/O, 3V to 3.6V domain). Multiplexed alternate functions: PGC3/RP38/RB6. Supported peripheral buses: General. |
| 26 | TDO/AN2/RP39/RB7 | Digital_IO | Signal terminal TDO/AN2/RP39/RB7 (I/O, 3V to 3.6V domain). Multiplexed alternate functions: TDO/AN2/RP39/RB7. Supported peripheral buses: General. |
| 27 | RPntiedtoUART3Transmit | Digital_IO | Signal terminal RPntiedtoUART3Transmit (I/O, 3V to 3.6V domain). Multiplexed alternate functions: RPntiedtoUART3Transmit. Supported peripheral buses: General. |
| 28 | IO33 | Digital_IO | GPIO33 / FSPIHD / SUBSPIHD / SPIIO4 |
| 29 | RP52/RC4 | Digital_IO | Signal terminal RP52/RC4 (I/O, 3V to 3.6V domain). Multiplexed alternate functions: RP52/RC4. Supported peripheral buses: General. |
| 30 | RP53/RC5 | Digital_IO | Signal terminal RP53/RC5 (I/O, 3V to 3.6V domain). Multiplexed alternate functions: RP53/RC5. Supported peripheral buses: General. |
| 31 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 32 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 3V to 3.6V domain (Max rating: 3.6V). |
| 33 | TMS/RP42/PWM3H/RB10 | Digital_IO | Signal terminal TMS/RP42/PWM3H/RB10 (I/O, 3V to 3.6V domain). Multiplexed alternate functions: TMS/RP42/PWM3H/RB10. Supported peripheral buses: PWM. |
| 34 | RPntiedtoPWM4HOutput | Digital_IO | Signal terminal RPntiedtoPWM4HOutput (I/O, 3V to 3.6V domain). Multiplexed alternate functions: RPntiedtoPWM4HOutput. Supported peripheral buses: PWM. |
| 35 | RPntiedtoPWM4LOutput | Digital_IO | Signal terminal RPntiedtoPWM4LOutput (I/O, 3V to 3.6V domain). Multiplexed alternate functions: RPntiedtoPWM4LOutput. Supported peripheral buses: PWM. |
| 36 | IO36 | Digital_IO | General Purpose Digital I/O Pin IO36 |
| 37 | IO37 | Digital_IO | General Purpose Digital I/O Pin IO37 |









