2 layers105 × 160 mm
Bkm-129x simple
Shank-Mods/Wii-BVM-Card
A simplified version of the BKM-129X compatible board.
132 parts26
2 layers427.6 × 118.1 mm
Sr89 udk
Tecsmith/sr89-keyboard-pcbOur first TKL ... and a Num-pad
- Size
- 427.6 × 118.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 575
- Nets
- 328
- Pads
- 2,239
- Tracks, vias
- 4,269, 1,223
- Pours
- 2,860
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 30 Jun 2026
- Updated
- 15 Jul 2026
Overview
Sr89 udk is an open-source printed circuit board by Tecsmith, from the Tecsmith/sr89-keyboard-pcb repository on GitHub. It is a 2-layer board of 427.6 × 118.1 mm with 575 parts on 328 nets, routed with 4,269 tracks and 1,223 vias.
It is built around the MC74HC589AD, TS5A3157DCK and SN74LVC1G14DBV, with the SK6803MINI-E, 1N4148WS and TPS25221DRV among its other parts. Its parts include 143 capacitors, 115 diodes, 14 resistors, 12 connectors and 10 ICs.
Main components
6
MC74HC589AD
SOIC-16-55℃~+125℃ 1 2V~6V 30ns@6V,50pF 35MHz 74HC 8 Output enable Parallel or Serial to Serial Tri-State SOIC-16 Shift Registers ROHSonsemiShift Registers
TS5A3157DCK
SC-70-6-40℃~+85℃ 1 1.65V~5.5V 10Ω 17.5pF 2:1 300MHz 6.5ns 7pC 8.5ns Bidirectional analog channel SC-70-6(SOT-363) Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers
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 InstrumentsInvertersSK6803MINI-E
32283228 New Arrivals ROHSNORMANDUncategorised
1N4148WS
SOD-3231.25V@150mA 100V 150mA 1uA@75V 200mW 2A 4ns Independent SOD-323 Switching Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Switching Diodes
TPS25221DRV
WSON-6-EP(2x2)-40℃~+125℃ 1 2.5V~5.5V 2A 70mΩ Active High Low Side Switch WSON-6-EP(2x2) Power Distribution Switches ROHSTexas InstrumentsPower Distribution Switches
Parts
575| Qty | Value | Footprint | References |
|---|---|---|---|
| 126 | 100n | Capacitor_SMD:C_0402_1005Metric | C1, C10, C11, C100, C101, C102, C103, C104, C106, C107, C108, C112, C116, C117, C118, C119 +110 |
| 121 | SK6803MINI-E | ts-keyboard-lib:SK6803MINI-E | W1, W10, W11, W100, W101, W102, W103, W104, W106, W107, W108, W110, W111, W112, W113, W114 +105 |
| 117 | ~ | ts-keyboard-lib:SW_MX_HotSwap | Z1, Z10, Z11, Z100, Z101, Z102, Z103, Z104, Z106, Z107, Z108, Z112, Z116, Z117, Z118, Z119 +101 |
| 115 | 1N4148WS | ts-keyboard-lib:D_SOD-323 | D1, D10, D11, D100, D101, D102, D103, D104, D106, D107, D108, D112, D116, D117, D118, D119 +99 |
| 13 | Pad mounting hole | 0_sr89:MountingHole_2.2mm_M2_ISO14580 | MT_{2}1, MT_{2}2, MT_{2}3, MT_{2}4, MT_{2}5, MT_{2}6, MT_{2}7, MT_{2}8, MT_{2}9, MT_{2}10, MT_{2}11, MT_{2}12, MT_{2}13 |
| 8 | 470µ | Capacitor_SMD:C_0603_1608Metric | C135, C141, C142, C143, C144, C145, C146, C147 |
| 7 | ~ | Capacitor_SMD:C_0402_1005Metric | C97, C97_2, C98, C110, C111, C113, C114 |
| 7 | ~ | ts-keyboard-lib:STAB_2U | ST1, ST2, ST3, ST4, ST6, ST7, ST8 |
| 6 | 10K | Resistor_SMD:R_Array_Convex_4x0402 | R1, R2, R3, R4, R6, R7 |
| 5 | ~ | 0_sr89:mouse-bite-.25U-slot | m1, m2, m3, m4, m5 |
| 4 | 5K1 | Resistor_SMD:R_0402_1005Metric | R5, R8, R9, R10 |
| 3 | MC74HC589 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U3, U4, U5 |
| 3 | TS5A3157 | Package_TO_SOT_SMD:SOT-23-6 | U7, U8, U9 |
| 2 | 100n | Capacitor_SMD:C_0603_1608Metric | C133, C140 |
| 2 | 20K | Resistor_SMD:R_0603_1608Metric | R21, R22 |
| 2 | 220R | Resistor_SMD:R_0603_1608Metric | R25, R26 |
| 2 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | 5V | Connector_JST:JST_SH_SM02B-SRSS-TB_1x02-1MP_P1.00mm_Horizontal | J12, J13 |
| 2 | 74HC595PW,118 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U1, U2 |
| 2 | ARGB | Connector_JST:JST_SH_SM03B-SRSS-TB_1x03-1MP_P1.00mm_Horizontal | J11, J17 |
| 2 | CONN | Connector_JST:JST_SH_SM05B-SRSS-TB_1x05-1MP_P1.00mm_Horizontal | J9, J16 |
| 2 | Conn_01x10_MountingPin | ts-flat-flex-cable:CONN_FH12-12S-0.5SH55_HIR | J1, J2 |
| 2 | NetTie_2 | ts-kicad-lib:NetTie-2_SMD_Pad0.254mm | NT1, NT2 |
| 2 | SN74LVC1G14DBV | Package_TO_SOT_SMD:SOT-23-5 | U6, U10 |
| 2 | SPI | Connector_JST:JST_SH_SM06B-SRSS-TB_1x06-1MP_P1.00mm_Horizontal | J8, J15 |
| 2 | TPS25221 | Package_TO_SOT_SMD:Texas_R-PDSO-G6 | SW2, SW3 |
| 2 | Tecsmith Logo | ts-logos-lib:Tecsmith_20mm | X1, X2 |
| 2 | UDK Logo | ts-logos-lib:UDK_5mm | X5, X6 |
| 2 | ~ | Package_TO_SOT_SMD:SOT-23-5 | B1, B2 |
| 2 | ~ | ts-kicad-lib:JRAINBOW-5V-ARGB | J3, J4 |
| 1 | 165K | Resistor_SMD:R_0603_1608Metric | R_{ILIM}2 |
| 1 | 30K | Resistor_SMD:R_0603_1608Metric | R^{ILIM}1 |
| 1 | JLCPCB Barcode | ts-jlcpcb-lib:jlcpcb_order_number_5x5 | X4 |
| 1 | OSHW Logo | Symbol:OSHW-Logo_7.5x8mm_SilkScreen | X3 |
| 1 | ~ | ts-keyboard-lib:STAB_6¼U | ST5 |
The 574 most common of 575 parts.
Questions
How big is the Sr89 udk PCB?
It measures 427.6 × 118.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Sr89 udk use?
575 parts, built around the MC74HC589AD, TS5A3157DCK, SN74LVC1G14DBV and SK6803MINI-E. 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 Sr89 udk KiCad files?
From the Tecsmith/sr89-keyboard-pcb repository on GitHub, at the commit this page was made from: the board is kicad/sr89_udk.kicad_pcb and its schematic kicad/sr89_udk.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sr89 udk design in my own project?
Its repository states no licence, so its author keeps all rights: ask Tecsmith before reusing the design.
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