4 layers100 × 100 mm
T41-RF board V012.8
DRWJSCHMIDT/T41
This is the repository for the officially released V10, V11, and V12 versions of the T41 Software Defined Transceiver hardware and kits.
209 parts66
2 layers
T41-Main+RF board V012
DRWJSCHMIDT/T4166This is the repository for the officially released V10, V11, and V12 versions of the T41 Software Defined Transceiver hardware and kits.
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 255
- Nets
- 221
- Pads
- 816
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 12 Jan 2024
- Updated
- 10 Oct 2026
Overview
T41-Main+RF board V012 is an open-source printed circuit board by DRWJSCHMIDT, from the DRWJSCHMIDT/T41 repository on GitHub. It is a 2-layer board with 255 parts on 221 nets.
It is built around the LM358BID, MAR-3SM+ and PSA-8A+, with the TEENSY 4.1, MC33078D and AD8599AR among its other parts. Its parts include 100 capacitors, 63 resistors, 20 ICs, 18 switches and 13 inductors. It belongs with the radio and wireless boards and the NXP (LPC, Kinetis, i.MX RT) boards of this library.
Main components
12
LM358BID
SOIC-8-18V~-2.5V、2.5V~18V -40℃~+85℃ 1.2MHz 100dB 2 20mA 3.5uV/℃ 300uA 35nA 3V~36V 3mV 40nV/√Hz@1kHz 4nA 500V/ms EMI filtering/RF suppression SOIC-8 Operational Amplifier ROHSTexas InstrumentsOperational AmplifierMAR-3SM+
SMD-4PRF AmplifiersMini-Circuits
PSA-8A+
SC-70-6-40℃~+85℃ 0Hz~4GHz 11.2dB 12.8dBm 18dB 20dB 26.1dBm 36mA 4.75V~5.25V 4.8dB SC-70-6 RF Amplifiers ROHSMini-CircuitsRF Amplifiers
TEENSY 4.1
Development Boards & Kits - ARM ModuleSparkFun ElectronicsUncategorisedMC33078D
SOIC-8-40℃~+85℃ -5V~18V 100dB 150uV 16MHz 2 25nA 29mA 2uV/℃ 300nA 4.1mA 4.5nV/√Hz@1kHz 7V/us SOIC-8 Operational Amplifier ROHSonsemiOperational AmplifierAD8599AR
SOIC8Dual, Ultralow Distorsion, Ultralow Noise Operational AmplifierAnalog DevicesUncategorisedOPA2209AID
SOIC-8-18V~-2.25V、2.25V~18V -40℃~+125℃ 130dB 18MHz 1uV/℃ 2 2.2mA 2.2nV/√Hz@1kHz 35uV 4.5V~36V 4.5nA 6.4V/us 65mA 700pA ESD protection、Reverse-phase input protection Rail-to-rail output SOIC-8 Precision Op Amps ROHSTexas InstrumentsOperational Amplifier
PCM1808PW
TSSOP-14-40℃~+85℃ 1uA、150uA 2 24 4.5V~5.5V 49.152MHz 96000Hz Audio Analog-to-Digital Converter I2S TSSOP-14 ADCs/DACs - Special Purpose ROHSTexas InstrumentsADCs/DACs - Special Purpose
LM1117T-3.3
TO-220-3L-40℃~+125℃@(Tj) 0.003%Vout 1 1.25V@(1A) 10mA 15V 1A 3.3V 75dB@(120Hz) Fixed Over Current Protection、Thermal shutdown Positive TO-220-3L Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHGSEMIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
LM317L
SOT-89SOT-89 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSGOODWORKUncategorised
LM7805CT
TO-2200℃~+70℃@(Ta) 1 1A 20V 2V@(1A) 40uV 5V 62dB@(120Hz) 8mA Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
PCM5102PW
TSSOP-20-25℃~+85℃ 1 3V~3.6V Digital filtering、Power-down mode I2S TSSOP-20 ADCs/DACs - Special Purpose ROHSTexas InstrumentsADCs/DACs - Special Purpose
README
README.mdT41_Stuff
This is the repository for the officially released V10, V11, and V12 versions of the T41 Software Defined Transceiver hardware and kits. Please read the areas below to understand this project, order boards, make your own boards, find build part lists (BOMs), order kits, and documentation that supports the T41 project.
What is the T41 project?
Parts
255| Qty | Value | Footprint | References |
|---|---|---|---|
| 38 | 0.1uF 50V | Capacitor_SMD:C_1206_3216Metric | C1, C3, C10, C11, C13, C17, C18, C19, C25, C26, C30, C40, C44, C51, C55, C100 +22 |
| 18 | SW_Omron_B3FS | Button_Switch_SMD:SW_SPST_B3S-1000 | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18 +2 |
| 13 | 10uF 50V | Capacitor_SMD:C_1206_3216Metric | C38, C39, C45, C46, C53, C56, C57, C58, C59, C62, C76, C93, C94 |
| 13 | TestPoint | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12, TP13 |
| 12 | 0.01uF 50V | Capacitor_SMD:C_1206_3216Metric | C31, C32, C33, C34, C35, C36, C37, C43, C47, C48, C52, C54 |
| 10 | 10k | Resistor_SMD:R_1206_3216Metric | R10, R11, R28, R32, R33, R34, R47, R48, R49, R50 |
| 10 | 10uF 16V | Capacitor_SMD:C_1206_3216Metric | C4, C8, C12, C15, C20, C21, C22, C27, C28, C29 |
| 8 | 100R | Resistor_SMD:R_1206_3216Metric | R4, R5, R6, R39, R40, R41, R42, R52 |
| 8 | 5k1 | Resistor_SMD:R_1206_3216Metric | R55, R56, R57, R58, R59, R60, R61, R62 |
| 8 | FB | Resistor_SMD:R_1206_3216Metric | L4, L5, L7, L8, L9, L10, L12, L13 |
| 6 | 10k 1% | Resistor_SMD:R_1206_3216Metric | R14, R15, R18, R19, R20, R21 |
| 6 | 10nF 50V | Capacitor_SMD:C_1206_3216Metric | C41, C42, C81, C82, C83, C84 |
| 6 | 2k2 | Resistor_SMD:R_1206_3216Metric | R16, R17, R35, R36, R53, R54 |
| 4 | 0.2uF 50V | Capacitor_SMD:C_1206_3216Metric | C64, C65, C66, C67 |
| 4 | 1uF 50V | Capacitor_SMD:C_1206_3216Metric | C77, C78, C79, C80 |
| 4 | 49R9 1% | Resistor_SMD:R_1206_3216Metric | R22, R23, R24, R25 |
| 4 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Bourns_Vertical_PEC12R-3x17F-Sxxxx | Encoder1, Encoder2, Encoder3, Encoder4 |
| 4 | ~ | MountingHole:MountingHole_4.3mm_M4_DIN965_Pad | H3, H4, H5, H6 |
| 3 | 10uH 20% | Inductor_SMD:L_Bourns-SRN6028 | L1, L2, L3 |
| 3 | 470uF 25V | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C2, C5, C6 |
| 2 | 0 | Resistor_SMD:R_1206_3216Metric | R63, R64 |
| 2 | 1.5uH | Resistor_SMD:R_1206_3216Metric | L6, L11 |
| 2 | 105pF 50V | Capacitor_SMD:C_1206_3216Metric | C96, C98 |
| 2 | 180pF 50V | Capacitor_SMD:C_1206_3216Metric | C95, C97 |
| 2 | 2.2K | Resistor_SMD:R_1206_3216Metric | R7, R27 |
| 2 | 2.2nF | Capacitor_SMD:C_1206_3216Metric | C23, C24 |
| 2 | 2.2nF 50V | Capacitor_SMD:C_1206_3216Metric | C49, C50 |
| 2 | 2.2uF 16V | Capacitor_SMD:C_1206_3216Metric | C14, C16 |
| 2 | 2k | Resistor_SMD:R_1206_3216Metric | R44, R45 |
| 2 | 2k2 1% | Resistor_SMD:R_1206_3216Metric | R12, R13 |
| 2 | 330 | Resistor_SMD:R_1206_3216Metric | R8, R9 |
| 2 | 470R | Resistor_SMD:R_1206_3216Metric | R2, R3 |
| 2 | 500R | Resistor_SMD:R_1206_3216Metric | R29, R30 |
| 2 | 74CBTLV3253DR | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U11, U13 |
| 2 | EA-T220-38E | T41_KiCad_Library:EAT22038E | H1, H2 |
| 2 | LED | LED_THT:LED_D3.0mm | D1, D2 |
| 2 | MC33078 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U8, U9 |
| 2 | MCP23017_SO | Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm | U6, U12 |
| 1 | 100k | Resistor_SMD:R_1206_3216Metric | R31 |
| 1 | 12-13.8V | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | J1 |
| 1 | 1k2 | Resistor_SMD:R_1206_3216Metric | R43 |
| 1 | 1k8 | Resistor_SMD:R_1206_3216Metric | R46 |
| 1 | 25MHz | Crystal:Crystal_SMD_HC49-SD_HandSoldering | Y1 |
| 1 | 2K2 | Resistor_SMD:R_1206_3216Metric | R1 |
| 1 | 330R | Resistor_SMD:R_1206_3216Metric | R51 |
| 1 | 36R5 | Resistor_SMD:R_1206_3216Metric | R26 |
| 1 | 51k | Resistor_SMD:R_1206_3216Metric | R38 |
| 1 | AD8599 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U16 |
| 1 | ADT2-1T | RF_Mini-Circuits:Mini-Circuits_CD542_H2.84mm | TR1 |
| 1 | BS170 | Package_TO_SOT_THT:TO-92 | Q1 |
| 1 | Display | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | J2 |
| 1 | Header | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J8 |
| 1 | Keys/PTT | Connector_IDC:IDC-Header_2x03_P2.54mm_Vertical | J5 |
| 1 | LM1117T-3.3 | Package_TO_SOT_THT:TO-220-3_Vertical | U2 |
| 1 | LM317L | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U20 |
| 1 | LM358B | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U18 |
| 1 | LM7805CT | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
| 1 | MAR-3SM+ | T41_KiCad_Library:Mini-Circuits_WW107 | U14 |
| 1 | MASWSS0179 | T41_KiCad_Library:MASWSS0179-SOT-26 | U17 |
| 1 | Mic_In | T41_KiCad_Library:Jack_3.5mm_STX-3081_Horizontal | J7 |
| 1 | OPA2209 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U21 |
| 1 | PA POWER +12V | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | J11 |
| 1 | PA+BPF+LPF | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | J3 |
| 1 | PCM1808PW | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U5 |
| 1 | PCM5102 | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U4 |
| 1 | PSA-8A+ | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U10 |
| 1 | RX RF in | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J9 |
| 1 | Rec_Out | T41_KiCad_Library:Jack_3.5mm_STX-3081_Horizontal | J6 |
| 1 | SN74LVC1G04DCK | T41_KiCad_Library:SOT-SC70 | U19 |
| 1 | Si5351A-B-GT | Package_SO:MSOP-10_3x3mm_P0.5mm | U15 |
| 1 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP2 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1 |
| 1 | TX RF Out | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J10 |
| 1 | Teensy4.1 | T41_KiCad_Library:Teensy41 | U3 |
| 1 | USBHost | Connector_IDC:IDC-Header_2x03_P2.54mm_Vertical | J4 |
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Questions
What parts does the T41-Main+RF board V012 use?
255 parts, built around the LM358BID, MAR-3SM+, PSA-8A+ and TEENSY 4.1. 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 T41-Main+RF board V012 KiCad files?
From the DRWJSCHMIDT/T41 repository on GitHub, at the commit this page was made from: the board is T41_V012_Mini_Files/T41_V012_Mini_Projects/T41-mini-Main+RF-board-V012/T41-Main+RF-board-V012.kicad_pcb and its schematic T41_V012_Files/T41_V012_PCBs/T41_V012_PCBs_KiCad/Old FIles/T41-BPF-filter-board-V12.6/T41-exciter-filter-board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the T41-Main+RF board V012 design in my own project?
Its repository states no licence, so its author keeps all rights: ask DRWJSCHMIDT before reusing the design.