2 layers100 × 100 mm
4 layers100 × 100 mm
T41
ai6ym/t4110T41-EP SDT Files
- Size
- 100 × 100 mm
- Copper layers
- 4
- Thickness
- 1.65 mm
- Parts
- 234
- Nets
- 171
- Pads
- 656
- Tracks, vias
- 1,312, 307
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 17 Aug 2024
- Updated
- 8 Apr 2025
Overview
T41 is an open-source printed circuit board by ai6ym, from the ai6ym/t41 repository on GitHub. It is a 4-layer board of 100 × 100 mm with 234 parts on 171 nets, routed with 1,312 tracks and 307 vias.
It is built around the HMC434E, PE4312C-Z and LM358BID, with the MAR-3SM+, PSA-8A+ and MC33078D among its other parts. Its parts include 84 capacitors, 64 resistors, 25 ICs, 14 inductors and 6 connectors.
Main components
12
HMC434E
SOT-23-60Hz~8GHz General Purpose Prescaler SOT-23-6 Clock Generators, PLLs, Frequency Synthesizers ROHSAnalog DevicesRF Misc ICs And Modules
PE4312C-Z
QFN-20-EP(4x4)-55℃~+105℃ 1MHz~4GHz 31.5dB 50Ω Digitally programmable attenuation、Multi-step attenuation、Digital control interface、Parallel control interface QFN-20-EP(4x4) RF Attenuators ROHSpSemiRF Attenuators
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 AmplifiersMC33078D
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 Amplifier
SN74LVC1G04DCK
SC-70-5-40℃~+125℃ 1 1 1.65V~5.5V 1.7V~2V 10uA 3.7ns@5V,50pF 32mA 32mA 700mV~800mV 74LVC 电源关断保护 SC-70-5 Inverters ROHSTexas InstrumentsInverters
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
SI5351A-B-GT
MSOP-10-40℃~+85℃ 1.71V~3.6V 200MHz 3 I2C MSOP-10 Clock Generators, PLLs, Frequency Synthesizers ROHSSilicon LabsClock Generators, PLLs, Frequency Synthesizers
ADT2-1T-1P+
SMD-6P,7.9x5.6mm-40℃~+85℃ 0.1dB 0.5dB 15dB 1:2 1° 2.84mm 5.59mm 7.87mm 8MHz~600MHz SMD-6P,7.9x5.6mm Balun ROHSMini-CircuitsBalun
README
README.mdT41-EP SDT Project Files
Hardware and software files for the T41-EP SDT as sold / distributed by AI6YM. These files are branched from K9HZ's Repo and G0ORX's Repo with some files from the SoftwareControlledHamRadio Groups.IO.
Changes present here are minor modifications made to enable automated SMD assembly, pre-programming of the Teensy and ATTiny, etc. Refinements to various BOMs (bill of materials) have been made to substitute parts which are unavailable or correct errors.
Software within this repository is licensed under GNU GPL v3. Hardware designs are licensed under TAPR OHL Version 1.0. In addition to these licenses the original creators of the T41, Albert F Peter (AC8GY) and Dr. Jack Purdum (W8TEE), have requested that any commercial use of the designs receive their written permission.
Parts
234| Qty | Value | Footprint | References |
|---|---|---|---|
| 42 | 0.1uF 50V | Capacitor_SMD:C_1206_3216Metric | C13, C16, C18, C20, C22, C23, C25, C26, C27, C29, C30, C31, C40, C43, C45, C47 +26 |
| 21 | TestPoint | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | G1, G2, G3, TP1, TP2, TP3, TP4, TP10, TP11, TP12, TP13, TP14, TP15, TP16, TP17, TP18 +5 |
| 17 | 10uF 50V | Capacitor_SMD:C_1206_3216Metric | C1, C3, C11, C12, C14, C32, C35, C36, C39, C41, C42, C48, C51, C57, C60, C67 +1 |
| 14 | 10k | Resistor_SMD:R_1206_3216Metric | R7, R9, R12, R20, R21, R23, R24, R28, R30, R39, R44, R47, R53, R55 |
| 10 | 2k2 | Resistor_SMD:R_1206_3216Metric | R26, R34, R49, R50, R51, R52, R60, R61, R62, R63 |
| 9 | FB | Resistor_SMD:R_1206_3216Metric | L1, L2, L3, L5, L6, L7, L8, L9, L107 |
| 8 | 5k1 | Resistor_SMD:R_1206_3216Metric | R2, R3, R5, R6, R10, R11, R17, R18 |
| 6 | 10k 1% | Resistor_SMD:R_1206_3216Metric | R25, R29, R32, R36, R41, R46 |
| 6 | 10nF 50V | Capacitor_SMD:C_1206_3216Metric | C4, C10, C17, C28, C37, C54 |
| 5 | 100R | Resistor_SMD:R_1206_3216Metric | R4, R8, R16, R22, R54 |
| 4 | 0.2uF 50V | Capacitor_SMD:C_1206_3216Metric | C34, C38, C44, C50 |
| 4 | 100pF | Capacitor_SMD:C_1206_3216Metric | C76, C78, C81, C82 |
| 4 | 1uF 50V | Capacitor_SMD:C_1206_3216Metric | C2, C9, C15, C24 |
| 4 | 49R9 1% | Resistor_SMD:R_1206_3216Metric | R27, R33, R38, R43 |
| 4 | MASWSS0179 | T41_Library:MASWSS0179-SOT-26 | U7, U9, U19, U20 |
| 4 | MC33078 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U6, U8, U106, U107 |
| 4 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1, JP15, JP16, JP17 |
| 3 | 10uH 20% | Inductor_SMD:L_Bourns-SRN6028 | L11, L12, L13 |
| 3 | SN74LVC1G04DCK | T41_Library:SOT-SC70 | U5, U10, U18 |
| 2 | 0 | Resistor_SMD:R_1206_3216Metric | R40, R42 |
| 2 | 1.5uH | Resistor_SMD:R_1206_3216Metric | L4, L10 |
| 2 | 100k | Resistor_SMD:R_1206_3216Metric | R48, R73 |
| 2 | 105pF 50V | Capacitor_SMD:C_1206_3216Metric | C5, C21 |
| 2 | 180pF 50V | Capacitor_SMD:C_1206_3216Metric | C8, C19 |
| 2 | 2.2nF 50V | Capacitor_SMD:C_1206_3216Metric | C33, C46 |
| 2 | 2k | Resistor_SMD:R_1206_3216Metric | R1, R13 |
| 2 | 2k2 1% | Resistor_SMD:R_1206_3216Metric | R31, R45 |
| 2 | 3k3 | Resistor_SMD:R_1206_3216Metric | R35, R37 |
| 2 | 500R | Resistor_SMD:R_1206_3216Metric | R15, R19 |
| 2 | 74CBTLV3253DR | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U1, U4 |
| 2 | AttenuatorBypass | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP3, JP13 |
| 2 | HMC434E | Package_TO_SOT_SMD:SOT-23-6 | U22, U23 |
| 2 | PE4312 | T41_Library:PE4312-QFN-20 | U3, U12 |
| 2 | PrescalarBypass | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP18, JP19 |
| 2 | ~ | MountingHole:MountingHole_4.3mm_M4_DIN965_Pad | H5, H6 |
| 1 | 12-13.8V | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | J4 |
| 1 | 1k2 | Resistor_SMD:R_1206_3216Metric | R59 |
| 1 | 1k8 | Resistor_SMD:R_1206_3216Metric | R56 |
| 1 | 25MHz | Crystal:Crystal_SMD_HC49-SD_HandSoldering | Y2 |
| 1 | 330R | Resistor_SMD:R_1206_3216Metric | R57 |
| 1 | 36R5 | Resistor_SMD:R_1206_3216Metric | R14 |
| 1 | 470uF 25V | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C69 |
| 1 | 51k | Resistor_SMD:R_1206_3216Metric | R58 |
| 1 | ADT1-1 | RF_Mini-Circuits:Mini-Circuits_CD542_H2.84mm | TR1 |
| 1 | ADT2-1T | RF_Mini-Circuits:Mini-Circuits_CD542_H2.84mm | TR2 |
| 1 | BS170 | Package_TO_SOT_THT:TO-92 | Q1 |
| 1 | CAL isolation | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP4 |
| 1 | EA-T220-38E | T41:EAT22038E | H4 |
| 1 | ECS-TX053-S3 | T41_Library:Oscillator_ECS_TXO53_S3 | Y1 |
| 1 | IQ_In | T41_Library:Jack_3.5mm_STX-3081_Horizontal | J5 |
| 1 | IQ_Out | T41_Library:Jack_3.5mm_STX-3081_Horizontal | J1 |
| 1 | LM1117T-3.3 | Package_TO_SOT_THT:TO-220-3_Vertical | U15 |
| 1 | LM317L | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U17 |
| 1 | LM358B | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U16 |
| 1 | LM7805CT | Package_TO_SOT_THT:TO-220-3_Vertical | U14 |
| 1 | LOGO | Library:silkscreen_logo_25mm | G*** |
| 1 | MAR-3SM+ | T41_Library:Mini-Circuits_WW107 | U13 |
| 1 | MCP23017_SO | Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm | U21 |
| 1 | PSA-8A+ | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U2 |
| 1 | RFControl | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | J3 |
| 1 | RF_IN | Connector_Coaxial:SMA_Amphenol_901-144_Vertical | J2 |
| 1 | RF_OUT | Connector_Coaxial:SMA_Amphenol_901-144_Vertical | J6 |
| 1 | Si5351A-B-GT | Package_SO:MSOP-10_3x3mm_P0.5mm | U11 |
| 1 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP2 |
| 1 | ~ | MountingHole:MountingHole_3.2mm_M3_Pad | H1 |
Questions
How big is the T41 PCB?
It measures 100 × 100 mm and has 4 copper layers, 1.65 mm thick.
What parts does the T41 use?
234 parts, built around the HMC434E, PE4312C-Z, LM358BID and MAR-3SM+. 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 KiCad files?
From the ai6ym/t41 repository on GitHub, at the commit this page was made from: the board is pcbs/rf/rf/rf.kicad_pcb and its schematic pcbs/ac8gy_20w_pa/20w_pa_diode_board/20w_pa_diode_board/20w_pa_diode_board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the T41 design in my own project?
Its repository states no licence, so its author keeps all rights: ask ai6ym before reusing the design.
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