4 layers236 × 118 mm
4 layers300 × 270 mm
- Size
- 300 × 270 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 440
- Nets
- 253
- Pads
- 1,303
- Tracks, vias
- 0, 0
- Pours
- 2
- Routed
- Not yet
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 17 Aug 2022
- Updated
- 6 Nov 2026
Overview
Tbox is an open-source printed circuit board by charlieh0tel, from the charlieh0tel/ee_stuff repository on GitHub, published under the BSD-3-Clause licence. It is a 4-layer board of 300 × 270 mm with 440 parts on 253 nets.
It is built around the OPA1678IDRGR, OPA1622IDRCR and SP724AHTG, with the TS12A12511DCN, ADP7142AUJZ-5.0-R7 and 1N4148W-7-F-CN among its other parts. Its parts include 149 resistors, 106 capacitors, 32 diodes, 23 transistors and 22 ICs.
Main components
12
OPA1678IDRGR
WSON-8-EP(3x3)-18V~-2.25V、2.25V~18V -40℃~+85℃ 10pA 10pA 110dB 16MHz 2 2mA 2uV/℃ 4.5V~36V 4.5nV/√Hz@1kHz 500uV 50mA 9V/us Built-in compensation、ESD protection Rail-to-rail output WSON-8-EP(3x3) Operational Amplifier ROHSTexas InstrumentsAudio Amplifiers
OPA1622IDRCR
VSON-10-EP(3x3)-18V~-2V、2V~18V -40℃~+125℃ 0.000149% 142mW×1@32Ω 2 Pairs Differential Inputs 2-Channel 2.6mA Automatic mute/no-noise switch、Enable/shutdown function VSON-10-EP(3x3) Audio Amplifiers ROHSTexas InstrumentsAudio Amplifiers
SP724AHTG
SOT-23-6-40℃~+105℃ 10nA 2V 3A@8/20us 3pF Bidirectional Four channels IEC 61000-4-2 TVS SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSLittelfuseESD And Surge Protection (TVS/ESD)
TS12A12511DCN
SOT-23-8-40℃~+85℃ -6V~6V、2.7V~12V 1 2:1 41ns 5Ω 80ns 93MHz SOT-23-8 Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers
ADP7142AUJZ-5.0-R7
TSOT-23-5-40℃~+125℃@(Ta) 1 11uVrms 200mA 40V 5V 88dB@(10kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive TSOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAnalog DevicesVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
1N4148W-7-F-CN
SOD-123SOD-123 Switching Diodes ROHSChipNoboSwitching Diodes
PMV30UN2R
SOT-23-55℃~+150℃ 1 N-channel 11nC@4.5V 1W 20V 32mΩ@4.5V 4.2A 62pF 655pF 70pF 900mV N-Channel ±12V SOT-23 MOSFETs ROHSNexperiaMOSFETs
3386W-1-103LF
RES-ADJ-TH_3P1 10kΩ 500mW ±10% ±100ppm/℃ RES-ADJ-TH_3P Potentiometers, Variable Resistors ROHSBournsPotentiometers & Variable Resistors
SMAJ15CA
DO-214AC(SMA)ESD And Surge Protection (TVS/ESD)hongjiachengBSS138BK,215-VB
SOT-23SOT-23 MOSFETs ROHSVBsemi ElecMOSFETs
SJ-43514
插件-25℃~+85℃ 16V 3.5mm Headphone Jack 300mA 插件 Audio Connectors ROHSCUIAudio Connectors
NRJ6HM-1-PRE
PluginPlugin New Arrivals ROHSNeutrikUncategorised
README
README.mdEE Stuff by charlieh0tel@
Parts
440| Qty | Value | Footprint | References |
|---|---|---|---|
| 41 | 10k | Resistor_SMD:R_0603_1608Metric | R1105, R1107, R1305, R1307, R2101, R2103, R2107, R2108, R2109, R2113, R2118, R2122, R2201, R2202, R2203, R2204 +25 |
| 30 | 100n | Capacitor_SMD:C_0603_1608Metric | C1007, C1102, C1107, C1108, C1110, C1111, C1201, C1302, C1307, C1308, C1310, C1311, C1401, C2101, C2102, C2203 +14 |
| 24 | 1N4148W | Diode_SMD:D_SOD-123 | D1201, D1202, D1401, D1402, D2103, D2104, D2105, D2106, D2109, D2110, D2111, D2112, D2113, D2114, D2115, D2116 +8 |
| 20 | 600R | Inductor_SMD:L_0805_2012Metric | FB1001, FB1002, FB1003, FB1004, FB1101, FB1102, FB1103, FB1301, FB1302, FB1303, FB2501, FB3201, FB3202, FB3203, FB3204, FB3205 +4 |
| 17 | 100R | Resistor_SMD:R_0603_1608Metric | R1103, R1303, R2207, R3203, R3204, R3205, R3206, R3207, R3208, R3303, R3308, R3309, R3310, R3313, R3314, R3411 +1 |
| 17 | 100k | Resistor_SMD:R_0603_1608Metric | R1108, R1201, R1205, R1206, R1308, R1401, R1405, R1406, R2211, R2301, R2305, R2306, R2507, R3211, R3317, R3407 +1 |
| 14 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1204, Q1404, Q2101, Q2102, Q2103, Q2104, Q2105, Q2106, Q2107, Q2108, Q2109, Q2202, Q2304, Q3201 |
| 11 | 1u | Capacitor_SMD:C_0603_1608Metric | C1103, C1203, C1303, C1403, C2201, C2202, C2303, C2514, C3303, C3305, C3306 |
| 11 | 2k2 | Resistor_SMD:R_0603_1608Metric | R1101, R1109, R1207, R1301, R1309, R1407, R2111, R2112, R2307, R3403, R3404 |
| 10 | 1k | Resistor_SMD:R_0603_1608Metric | R2104, R2105, R2115, R2116, R2425, R2426, R2427, R2428, R3209, R3210 |
| 10 | 1n | Capacitor_SMD:C_0603_1608Metric | C1101, C1109, C1301, C1309, C2510, C3203, C3204, C3205, C3313, C3314 |
| 8 | 100p | Capacitor_SMD:C_0603_1608Metric | C1104, C1304, C3304, C3307, C3308, C3317, C3405, C3406 |
| 8 | 10n | Capacitor_SMD:C_0603_1608Metric | C1003, C1004, C1005, C1006, C3201, C3202, C3206, C3207 |
| 8 | OPA1678 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1101, U1301, U2201, U2402, U2502, U3301, U3302, U3401 |
| 7 | 10u | Capacitor_SMD:C_1206_3216Metric | C1001, C1002, C2001, C2002, C2003, C2502, C2512 |
| 7 | 2k2 | Resistor_SMD:R_0805_2012Metric | R2102, R2106, R2110, R2114, R2119, R2120, R2210 |
| 7 | 4k7 | Resistor_SMD:R_0603_1608Metric | R1203, R1403, R2303, R2411, R2412, R2423, R2424 |
| 6 | 220R | Resistor_SMD:R_0603_1608Metric | R1202, R1208, R1402, R1408, R2302, R2308 |
| 6 | 47u | Capacitor_SMD:CP_Elec_6.3x5.4 | C1105, C1106, C1305, C1306, C3403, C3404 |
| 6 | PMV30UN2 | Package_TO_SOT_SMD:SOT-23 | Q1201, Q1202, Q1401, Q1402, Q2301, Q2302 |
| 6 | SP724 | Package_TO_SOT_SMD:SOT-23-6 | U1001, U1103, U1104, U1303, U1304, U3201 |
| 5 | 10k | Potentiometer_THT:Potentiometer_Bourns_3386W_Horizontal | RV3301, RV3302, RV3303, RV3401, RV3402 |
| 5 | 470u | Capacitor_SMD:CP_Elec_10x10.5 | C2401, C2402, C2408, C2409, C2507 |
| 5 | 47k | Resistor_SMD:R_0603_1608Metric | R1102, R1302, R2117, R3409, R3410 |
| 5 | GND | TestPoint:TestPoint_Keystone_5015_Micro_Mini | TP1101, TP1301, TP2104, TP2401, TP3301 |
| 5 | SMAJ15CA | Diode_SMD:D_SMA | D3201, D3202, D3203, D3301, D3302 |
| 5 | TS12A12511 | Package_SO:MSOP-8_3x3mm_P0.65mm | U1102, U1201, U1302, U1401, U2301 |
| 5 | TestPoint | TestPoint:TestPoint_Keystone_5015_Micro_Mini | TP2501, TP2502, TP2503, TP2504, TP2505 |
| 4 | 10k | Potentiometer_THT:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV2201, RV2202, RV2402, RV2403 |
| 4 | 150k | Resistor_SMD:R_0603_1608Metric | R2407, R2408, R2419, R2420 |
| 4 | 22k | Resistor_SMD:R_0603_1608Metric | R3301, R3302, R3318, R3319 |
| 4 | 3R3 | Resistor_SMD:R_0603_1608Metric | R2409, R2410, R2421, R2422 |
| 3 | 10u NP | Capacitor_SMD:C_1206_3216Metric | C3312, C3315, C3316 |
| 3 | 220u | Capacitor_SMD:CP_Elec_8x10.5 | C2405, C2407, C2505 |
| 3 | 470k | Resistor_SMD:R_0603_1608Metric | R1204, R1404, R2304 |
| 3 | 470n | Capacitor_SMD:C_0603_1608Metric | C1202, C1402, C2302 |
| 3 | 7k5 | Resistor_SMD:R_0603_1608Metric | R3307, R3311, R3312 |
| 3 | BSS138BK | Package_TO_SOT_SMD:SOT-23 | Q1203, Q1403, Q2303 |
| 2 | 100u | Capacitor_SMD:CP_Elec_6.3x7.7 | C3310, C3311 |
| 2 | 10k dual | Potentiometer_THT:Potentiometer_Alpha_RD902F-40-00D_Dual_Vertical | RV2401, RV2404 |
| 2 | 10u X7R 25V | Capacitor_SMD:C_1206_3216Metric | C3401, C3402 |
| 2 | 220u 35V | Capacitor_SMD:CP_Elec_10x10.5 | C2503, C2506 |
| 2 | 3k3 | Resistor_SMD:R_0603_1608Metric | R1106, R1306 |
| 2 | 430R | Resistor_SMD:R_0603_1608Metric | R1104, R1304 |
| 2 | 4u7 | Capacitor_SMD:C_0805_2012Metric | C2501, C2504 |
| 2 | CHASSIS STUD | MountingHole:MountingHole_3.2mm_M3_Pad | H1001, H2401 |
| 2 | GND-CHASSIS tie | NetTie:NetTie-2_SMD_Pad0.5mm | NT1001, NT2401 |
| 2 | HEADSET | tbox:Jack_3.5mm_CUI_SJ-43514_Horizontal | J1103, J1303 |
| 2 | MIC 1/4 | Connector_Audio:Jack_6.35mm_Neutrik_NRJ6HM-1-PRE_Horizontal | J1102, J1302 |
| 2 | MIC 3.5 | tbox:Jack_3.5mm_Switchcraft_35RAPCxxH3_Horizontal | J1101, J1301 |
| 2 | OPA1622 | Package_SON:Texas_DRC0010J | U2401, U2403 |
| 2 | PTT GATE | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP2101, JP2102 |
| 2 | SMAJ15A | Diode_SMD:D_SMA | D3204, D3205 |
| 2 | SPARE | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J1104, J1304 |
| 2 | TY-250P | tbox:Transformer_Triad_TY-250P | T3301, T3302 |
| 1 | 10R | Resistor_SMD:R_0603_1608Metric | R2504 |
| 1 | 10u | Capacitor_SMD:CP_Elec_5x5.4 | C3309 |
| 1 | 12k | Resistor_SMD:R_0603_1608Metric | R3315 |
| 1 | 174k | Resistor_SMD:R_0603_1608Metric | R2505 |
| 1 | 20k | Resistor_SMD:R_0603_1608Metric | R2205 |
| 1 | 220n | Capacitor_SMD:C_0603_1608Metric | C2516 |
| 1 | 47R | Resistor_SMD:R_0603_1608Metric | R2503 |
| 1 | 47p | Capacitor_SMD:C_0603_1608Metric | C2204 |
| 1 | 47u X7R 25V | Capacitor_SMD:C_1210_3225Metric | C2513 |
| 1 | 620R | Resistor_SMD:R_0603_1608Metric | R3316 |
| 1 | ADP7142AUJZ-5.0 | Package_TO_SOT_SMD:TSOT-23-5 | U2501 |
| 1 | BIAS A | tbox:SW_Toggle_CK_7101_AV2_Horizontal | SW3203 |
| 1 | BIAS B | tbox:SW_Toggle_CK_7101_AV2_Horizontal | SW3204 |
| 1 | CHASSIS-GND tie | NetTie:NetTie-2_SMD_Pad0.5mm | NT3201 |
| 1 | CH_A_OUT | TestPoint:TestPoint_Keystone_5015_Micro_Mini | TP2202 |
| 1 | CH_B_OUT | TestPoint:TestPoint_Keystone_5015_Micro_Mini | TP2203 |
| 1 | CW SPARE | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3205 |
| 1 | GAIN A HI | tbox:SW_Toggle_CK_7101_AV2_Horizontal | SW3201 |
| 1 | GAIN B HI | tbox:SW_Toggle_CK_7101_AV2_Horizontal | SW3202 |
| 1 | IC LED | LED_SMD:LED_0805_2012Metric | D2201 |
| 1 | INTERCOM | Button_Switch_THT:SW_Push_2P1T_Toggle_CK_PVA1xxH2xxxxxxV2 | SW2201 |
| 1 | LINE L SRC | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | J3301 |
| 1 | LINE OUT | Connector_Audio:Jack_3.5mm_CUI_SJ1-3533NG_Horizontal | J3303 |
| 1 | LINE R SRC | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | J3302 |
| 1 | MIC/LINE | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JP3301 |
The 402 most common of 440 parts.
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Questions
How big is the Tbox PCB?
It measures 300 × 270 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Tbox use?
440 parts, built around the OPA1678IDRGR, OPA1622IDRCR, SP724AHTG and TS12A12511DCN. 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 Tbox KiCad files?
From the charlieh0tel/ee_stuff repository on GitHub, at the commit this page was made from: the board is projects/tbox/kicad/tbox.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tbox design in my own project?
Its repository publishes it under the BSD-3-Clause licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).