2 layers65 × 30 mm
SX1255 HAT hw
M17-Project/SX1255_HAT-hw
Raspberry Pi Zero shield with the SX1255 RF transceiver chip
32 parts47
2 layers65 × 30 mm
SX1255 HAT
Jankyneering/SX1255_dev_hat2Raspberry Pi Zero shield with the SX1255 RF transceiver chip. Based on M17's design.
- Size
- 65 × 30 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 59
- Pads
- 160
- Tracks, vias
- 201, 98
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 16 Feb 2026
- Updated
- 2 Mar 2026
Overview
SX1255 HAT is an open-source printed circuit board by Jankyneering, from the Jankyneering/SX1255_dev_hat repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 65 × 30 mm with 42 parts on 59 nets, routed with 201 tracks and 98 vias.
It is built around the SX1255IWLTRT, 24LC256-I/P and CRCW0603100RFKECC, with the 06035G104ZAT2A, C0603C103M4REC7411 and AC0603JRNPO9BN270 among its other parts. Its parts include 16 capacitors, 10 resistors, 3 connectors, 3 inductors and 2 ICs.
Main components
11
SX1255IWLTRT
QFN-32-EP(5x5)-40℃~+85℃ 18mA 2.7V~3.6V 400MHz~510MHz 434MHz 60mA 7dBm 802.15.4 SPI transceiver QFN-32-EP(5x5) RF Transceiver ICs ROHSSEMTECHRF Transceiver ICs
24LC256-I/P
PDIP-8-40℃~+85℃ 1,000,000 cycles 2.5V~5.5V 200 Years 256Kbit 400kHz 5ms Hardware write protection function、Noise suppression function I2C PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM
CRCW0603100RFKECC
0603-55℃~+155℃ 100mW 100Ω Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface Mount
06035G104ZAT2A
0603-20%~+80% 100nF 50V Y5V 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSKyocera AVXMultilayer Ceramic Capacitors MLCC - SMD/SMTC0603C103M4REC7411
060310nF 16V X7R ±20% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSKEMETMultilayer Ceramic Capacitors MLCC - SMD/SMTAC0603JRNPO9BN270
060327pF 50V NP0 ±5% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMT
ECS-TXO-20CSMV4-320-AY-TR
SMD2016-4PSMD2016-4P Temperature Compensated Crystal Oscillators (TCXO) ROHSECSTemperature Compensated Crystal Oscillators (TCXO)
AISC-0603-R039J-T
SMD,1.1x1.8mm220mΩ 39nH 460mA Wire-wound inductor ±5% SMD,1.1x1.8mm Power Inductors ROHSAbraconInductors (SMD)VJ0603A330KXAPW1BC
060333pF 50V ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSVishay IntertechnologyMultilayer Ceramic Capacitors MLCC - SMD/SMTAISC-0603-R082J-T
SMD,1.8x1.1mm300mA 500mΩ 82nH Unshielded Inductor ±5% SMD,1.8x1.1mm Power Inductors ROHSAbraconPower Inductors
RF2-04A-T-00-50-G
插件-65℃~+165℃ 1 50Ω 6GHz Board Side Inner Bore Positive Pin SMA 插件 Coaxial Connectors (RF) ROHSADAM TECHCoaxial Connectors (RF)
README
hardware/SX1255_HAT/README.mdParts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100R | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R5, R6, R7 |
| 7 | 100n | Capacitor_SMD:C_0603_1608Metric | C5, C6, C7, C8, C9, C10, C13 |
| 5 | 10n | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4, C16 |
| 4 | MountingHole | MountingHole:MountingHole_2.7mm_M2.5_DIN965 | H1, H2, H3, H4 |
| 3 | 3K9 | Resistor_SMD:R_0603_1608Metric | R8, R9, R10 |
| 2 | 6.8p | Capacitor_SMD:C_0603_1608Metric | C14, C15 |
| 1 | 24LC256 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | 27p | Capacitor_SMD:C_0603_1608Metric | C12 |
| 1 | 32MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | 33n | Inductor_SMD:L_0603_1608Metric | L3 |
| 1 | 33p | Capacitor_SMD:C_0603_1608Metric | C11 |
| 1 | 39n | Inductor_SMD:L_0603_1608Metric | L2 |
| 1 | 82n | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | Logo_Open_Hardware_Small | Symbol:OSHW-Logo2_7.3x6mm_SilkScreen | SYM1 |
| 1 | RPi Zero | Connector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_Vertical | J3 |
| 1 | RST_SEL | Jumper:SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mm_NumberLabels | JP1 |
| 1 | RX | Connector_Coaxial:U.FL_Molex_MCRF_73412-0110_Vertical | J2 |
| 1 | SX1255 | parts:QFN50P500X500X80-33N-D | IC1 |
| 1 | TX | Connector_Coaxial:U.FL_Molex_MCRF_73412-0110_Vertical | J1 |
| 1 | WP | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP2 |
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Questions
How big is the SX1255 HAT PCB?
It measures 65 × 30 mm and has 2 copper layers, 1.6 mm thick.
What parts does the SX1255 HAT use?
42 parts, built around the SX1255IWLTRT, 24LC256-I/P, CRCW0603100RFKECC and 06035G104ZAT2A. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the SX1255 HAT KiCad files?
From the Jankyneering/SX1255_dev_hat repository on GitHub, at the commit this page was made from: the board is hardware/SX1255_HAT/SX1255_HAT.kicad_pcb and its schematic hardware/SX1255_HAT/SX1255_HAT.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SX1255 HAT design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).