Front
About the Front PCB
Front is an open source PCB design by JQIamo, published on GitHub. It is a 2-layer board measuring 64.5 × 92 mm, with 40 components from 15 distinct parts.
Other key parts include the AD8421BRZ-R7 and TC7SZ125FU. By type, the board carries 12 capacitors, 9 resistors, 6 connectors, 6 diodes, 5 ICs and 2 switches.
From the project
20A bipolar current source with water cooled sensing resistor
Main components on the Front
Front bill of materials (BOM)
40 components, 15 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | AD8421BRZ-R7 AD8421 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U1, U2, U4 |
| 2 | TC7SZ125FU | TC7SZ125FU | U3, U5 |
| 4 | 5227222-3 Conn_Coaxial | BNC-Vertical | J1, J2, J4, J7 |
| 1 | Conn_02x08_Odd_Even | 16PinConn | J3 |
| 1 | Conn_02x07_Odd_Even | 14PinConn | J5 |
| 2 | MAX4656 | SOIC-8-1EP_3.9x4.9mm_Pitch1.27mm | S1, S2 |
| 4 | CLL4150 TR D | Diode_SOD80 | D1, D2, D4, D5 |
| 2 | LED | LED | D3, D6 |
| 12 | C0603C104J5RACAUTO 0.1uF | C_0603 | C1, C2, C3, C4, C5, C6, C7, C8 +4 |
| 3 | FC0603E50R0BTBST1 50 | R_0603 | R1, R2, R11 |
| 1 | MCT06030C1004FP500 1M | R_0603 | R3 |
| 1 | DNP | R_0805 | R4 |
| 1 | RNCF0603TKY200R 200 | R_0603 | R5 |
| 1 | Y16291K00000T9R 1k | R_0603 | R10 |
| 2 | MCU08050C2201FP500 200 | R_0805 | R20, R21 |
Front design files
The KiCad project lives in the JQIamo/20A-bipolar-current-source repository on GitHub; these links point at the commit this page was built from.
- LayoutKicad/front/front.kicad_pcb
- SchematicKicad/front/front.kicad_sch
Front: common questions
How big is the Front PCB?
The Front measures 64.5 × 92 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Front?
40 components, from 15 distinct parts. The full bill of materials is listed on this page.
Where can I download the Front design files?
From the JQIamo/20A-bipolar-current-source repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Front design in my own project?
The repository has no license, so all rights stay with JQIamo. Use it as a reference, and ask the author before reusing the design.
