4 layers75 × 40 mm
4 layers50 × 25 mm
RL7023-USB
yuta2k/RL7023-USBWi-SUN モジュール「MB-RL7023-11/DSS」を USB Type-C デバイスとして扱うための基板
- Size
- 50 × 25 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 45
- Pads
- 124
- Tracks, vias
- 210, 95
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 14 Sep 2025
- Updated
- 14 Sep 2025
Overview
RL7023-USB is an open-source printed circuit board by yuta2k, from the yuta2k/RL7023-USB repository on GitHub, published under the MIT licence. It is a 4-layer board of 50 × 25 mm with 33 parts on 45 nets, routed with 210 tracks and 95 vias.
It is built around the FT231XS-R, MIC5365-3.3YD5-TR and USBLC6-2P6, with the DF12NB(3.0)-20DS-0.5V(51), LTST-C190EKT and LTST-C190GKT among its other parts. Its parts include 9 resistors, 8 capacitors, 3 ICs, 3 diodes and 2 connectors.
Main components
8
FT231XS-R
SSOP-20-150mil-40℃~+85℃ 125uA 5V 8.4mA USB 2.0 USB to UART SSOP-20-150mil USB Converters ROHSFTDIUSB Converters
MIC5365-3.3YD5-TR
TSOT-23-5-40℃~+125℃@(Tj) 1 150mA 200uVrms 3.3V 310mV@(150mA) 39uA 5.5V 70dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive TSOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMicrochip TechnologyVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2P6
SOT-666-6-40℃~+125℃ 150nA 17V 2 3.5pF 5.25V 5A@8/20us 6V ESD IEC 61000-4-2 Unidirectional SOT-666-6 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
DF12NB(3.0)-20DS-0.5V(51)
SMD,P=0.5mm-55℃~+125℃ 0.5mm 2 20P 300mA Gold Slot Type Butting Surface Mount,Vertical SMD,P=0.5mm Board-to-Board and Backplane Connector ROHSHirose ElectricBoard-To-Board And Backplane Connector
LTST-C190EKT
0603-55℃~+85℃ 100mW 130° 20mA 2V 2mcd 621nm 630nm Discrete Diode Red Water Clear 0603 LED Indication - Discrete ROHSLite-OnLED Indication - DiscreteLTST-C190GKT
0603-55℃~+85℃ 100mW 130° 2.1V 20mA 565nm 569nm 6mcd Discrete Diode Water Clear Yellow Green 0603 LED Indication - Discrete ROHSLite-OnLED Indication - DiscreteLTST-C190TBKT
0603-20℃~+80℃ 104mcd 130° 20mA 3.3V 465nm~475nm 468nm 76mW Blue Discrete Diode Water Clear 0603 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
USB4105-GF-A
SMD-40℃~+85℃ 1 12P 48V 5A Black Female Surface Mount, Right Angle Type-C USB 2.0 SMD USB Connectors ROHSGlobal Connector Technology (GCT)USB Connectors
README
README.mdRL7023-USB - MB-RL7023-11/DSS to USB Bridge Board
Wi-SUN モジュール「MB-RL7023-11/DSS」を USB Type-C デバイスとして扱うための基板です。
USB-UART コンバータ「FT231X」を採用しており、USB 経由でシリアル通信が可能です。
ディレクトリ構成
- kicad - KiCAD 9 プロジェクト
- gerber_jlcpcb - JLCPCB 製造用ガーバ
- bom - 部品表
コンデンサ・抵抗等は、定格を満たせば互換品で問題ありません
(基本的に 5V を超える耐圧、1/10W 等) - images-for-doc - 本ドキュメント用の画像
備考
モジュールのリセット
経験則上、この Wi-SUN モジュールを扱うためのソフトウェア・ライブラリを再起動したときの状態管理が難しいため、シリアルポートの (再) オープン時にモジュールをリセットするようにしました。
具体的には DTR が LOW レベルとなる際、Wi-SUN モジュールの RESET ピンも瞬間的に LOW レベルとなるようにしています。
このリセットが不要な場合には、C8 を非実装としてください。
LED
RX・TX シルクは、この基板から USB 側に見たものです。
USB ホストから Wi-SUN モジュールへの命令送信時は RX LED が点滅し、それに対する Wi-SUN モジュールからの応答時には TX LED が点滅します。
License
MIT License
See LICENSE for more details.
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | M2 Hole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4, H5 |
| 4 | 0.1u | Capacitor_SMD:C_0402_1005Metric | C5, C6, C7, C8 |
| 2 | 1u | Capacitor_SMD:C_0402_1005Metric | C3, C4 |
| 2 | 27 | Resistor_SMD:R_0402_1005Metric | R5, R6 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R2, R3 |
| 2 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2 |
| 1 | 0.1u | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 2.4k | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 270 | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | 300 | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | 330 | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | BLM18PG471SN1D | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | DF12NB(3.0)-20DS-0.5V(51) | RL7023-USB:Hirose_DF12NB(3.0)-20DS-0.5V(51)_2x10-P0.5mm | J2 |
| 1 | FT231XS | Package_SO:SSOP-20_3.9x8.7mm_P0.635mm | U3 |
| 1 | LTST-C190EKT | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | LTST-C190GKT | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | LTST-C190TBKT | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | MIC5365-3.3YD5 | Package_TO_SOT_SMD:TSOT-23-5 | U2 |
| 1 | USB4105-GF-A | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | USBLC6-2P6 | Package_TO_SOT_SMD:SOT-666 | U1 |
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Questions
How big is the RL7023-USB PCB?
It measures 50 × 25 mm and has 4 copper layers, 1.6 mm thick.
What parts does the RL7023-USB use?
33 parts, built around the FT231XS-R, MIC5365-3.3YD5-TR, USBLC6-2P6 and DF12NB(3.0)-20DS-0.5V(51). 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 RL7023-USB KiCad files?
From the yuta2k/RL7023-USB repository on GitHub, at the commit this page was made from: the board is kicad/RL7023-USB.kicad_pcb and its schematic kicad/RL7023-USB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the RL7023-USB design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).