4 layers100 × 174.6 mm
Rf switchboard
Erhannis/rf_switchboard
KiCAD pcb; whole heap of rf-related modules so I can figure out what works and how.
467 parts
2 layers100 × 75 mm
Qse2
Greg-R/qse21The documentation for this design is located here:
- Size
- 100 × 75 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 82
- Nets
- 53
- Pads
- 247
- Tracks, vias
- 477, 178
- Pours
- 45
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 5 Mar 2024
- Updated
- 10 Aug 2026
Overview
Qse2 is an open-source printed circuit board by Greg-R, from the Greg-R/qse2 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 100 × 75 mm with 82 parts on 53 nets, routed with 477 tracks and 178 vias.
It is built around the SN74LVC1G14DBV, NCP114ASN330T1G and SN74AC74PW, with the SN74CBT3253D, UA78M05IDCYR and ADT1-1+ among its other parts. Its parts include 37 capacitors, 24 resistors, 11 ICs and 6 connectors.
Main components
8
SN74LVC1G14DBV
SOT-23-5-40℃~+85℃ 1 1 1.16V~3.33V 1.65V~5.5V 10uA 2.3V 32mA 32mA 390mV~1.87V 550mV 6.5ns@2.5V,50pF 74LVC Schmitt trigger 电源关断保护、噪声抑制功能 SOT-23-5 Inverters ROHSTexas InstrumentsInverters
NCP114ASN330T1G
TSOP-5-1.5mm-40℃~+85℃@(Tj) 1 225mV@(300mA) 3.3V 300mA 5.5V 50uA 70uVrms 75dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive TSOP-5-1.5mm Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSonsemiVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SN74AC74PW
TSSOP-14-40℃~+85℃ 1 160MHz 2 24mA 24mA 2V~6V 2uA 3ns 3pF 500ps 6ns@5V,50pF 74AC Series Complementary D-Type Rising Edge Set and Reset TSSOP-14 Flip Flops ROHSTexas InstrumentsFlip Flops
SN74CBT3253D
SOIC-16-40℃~+85℃ 1.6ns@5V,50pF 3uA 4.5V~5.5V 74CBT Single Supply SOIC-16 Signal Switches, Multiplexers, Decoders ROHSTexas InstrumentsSignal Switches, Multiplexers, Decoders
UA78M05IDCYR
SOT-223-40℃~+125℃@(Tj) 1 200uV 25V 2V 500mA 5V 62dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection Positive SOT-223-4 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
ADT1-1+
SMD-6P,7.9x5.6mm-20℃~+85℃ 0.1dB 150kHz~400MHz 22dB 50Ω:50Ω 5° SMD-6P,7.9x5.6mm Balun ROHSMini-CircuitsBalun
B4B-XH-A(LF)(SN)
插件,P=2.5mm-25℃~+85℃ 1 12.4mm 1x4P 2.5mm 250V 3A 4 4P 5.75mm 7mm Brass K Pin PA66 Through Hole Tin UL94V-0 White XH 插件,P=2.5mm Wire To Board Connector ROHSJSTWire To Board Connector
SJ-3524-SMT-TR
SMDSMD Audio Connectors ROHSCUIAudio Connectors (Headphones)
README
README.mdQSE2DCEZ Transmitter Module
The documentation for this design is located here: https://kf5n.com/t41-2/qse2dcez/
Parts
82| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 0.1uF | Capacitor_SMD:C_1206_3216Metric | C1, C6, C7, C9, C10, C12, C16, C17, C22, C25, C31 |
| 7 | 10uF | Capacitor_SMD:C_1206_3216Metric | C4, C5, C14, C15, C24, C27, C29 |
| 6 | 0.01uF | Capacitor_SMD:C_1206_3216Metric | C8, C18, C35, C36, C39, C40 |
| 5 | 1uF | Capacitor_SMD:C_1206_3216Metric | C3, C11, C13, C30, C32 |
| 4 | 0.047uF | Capacitor_SMD:C_1206_3216Metric | C37, C38, C43, C44 |
| 4 | 2.15k | Resistor_SMD:R_1206_3216Metric | R18, R19, R26, R34 |
| 4 | 2k | Resistor_SMD:R_1206_3216Metric | R22, R23, R24, R25 |
| 4 | 3.3nF | Capacitor_SMD:C_1206_3216Metric | C28, C34, C41, C42 |
| 4 | 51 | Resistor_SMD:R_1206_3216Metric | R16, R17, R35, R36 |
| 4 | 953 | Resistor_SMD:R_1206_3216Metric | R20, R21, R27, R31 |
| 3 | SN74LVC1G14DBV | Package_TO_SOT_SMD:SOT-23-5 | U1, U2, U10 |
| 2 | 270 | Resistor_SMD:R_1206_3216Metric | R1, R2 |
| 2 | 4.7k | Resistor_SMD:R_1206_3216Metric | R5, R7 |
| 2 | 5-1814832-1 | digikey-footprints:RF_SMA_Vertical_5-1814832-1 | J1, J2 |
| 2 | AD8137ARZ-R7 | 16TSOP:R_8_ADI | U5, U9 |
| 2 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2 |
| 1 | 100 | Resistor_SMD:R_1206_3216Metric | R6 |
| 1 | 1k | Resistor_SMD:R_1206_3216Metric | R28 |
| 1 | 2.2k | Resistor_SMD:R_1206_3216Metric | R37 |
| 1 | 20 | Resistor_SMD:R_1206_3216Metric | R4 |
| 1 | ADT1-1+ | RF_Mini-Circuits:Mini-Circuits_CD542_H2.84mm | TR2 |
| 1 | AP7343 | Package_TO_SOT_SMD:TSOT-23-5 | U6 |
| 1 | B4B-XH-A_LF__SN_ | digikey-footprints:PinHeader_1x4_P2.5mm_Drill1.1mm | J7 |
| 1 | Conn_01x02 | digikey-footprints:PinHeader_1x2_P2.5mm_Drill1.1mm | J6 |
| 1 | Conn_02x08_Odd_Even | Connector_IDC:IDC-Header_2x08_P2.54mm_Vertical | J3 |
| 1 | NCP114ASN330T1G | 16TSOP:TSOP-5-483-N_ONS | U11 |
| 1 | REF3016E | Package_TO_SOT_SMD:SOT-23-3 | U8 |
| 1 | SJ-3524-SMT | SJ-3524-SMT:CUI_SJ-3524-SMT | J4 |
| 1 | SN74AC74PW | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U4 |
| 1 | SN74CBT3253 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U3 |
| 1 | TestPoint | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP3 |
| 1 | UA78M05IDCYR | 16TSOP:DCY0004A_N | U7 |
Questions
How big is the Qse2 PCB?
It measures 100 × 75 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Qse2 use?
82 parts, built around the SN74LVC1G14DBV, NCP114ASN330T1G, SN74AC74PW and SN74CBT3253D. 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 Qse2 KiCad files?
From the Greg-R/qse2 repository on GitHub, at the commit this page was made from: the board is qse2.kicad_pcb and its schematic qse2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Qse2 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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