Rear
About the Rear PCB
Rear is an open source PCB design by JQIamo, published on GitHub. It is a 4-layer board measuring 145 × 157 mm, with 99 components from 43 distinct parts.
Other key parts include the BUF634, LT3080ET#PBF, LM337KCSE3, UA7815CKCS and LM7915CT/NOPB. By type, the board carries 41 capacitors, 28 resistors, 13 ICs, 9 connectors, 4 transistors and 2 inductors.
From the project
20A bipolar current source with water cooled sensing resistor
Main components on the Rear
Rear bill of materials (BOM)
99 components, 43 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | BUF634 | TO-263-5_TabPin6 | U1, U2 |
| 1 | LT3080ET#PBF LT3080 | TO-220-5_Horizontal | U3 |
| 1 | LM337KCSE3 LM337_TO220 | TO-220-3_Horizontal | U4 |
| 1 | UA7815CKCS uA7815 | TO-220-3_Horizontal | U5 |
| 1 | LM7915CT/NOPB LM7915 | TO-220-3_Horizontal | U6 |
| 1 | LM7805CT/NOPB LM7805 | TO-220-3_Horizontal | U7 |
| 1 | LM7905CT/NOPB LM7905 | TO-220-3_Horizontal | U8 |
| 1 | TL1963ADCQR TL1963A | SOT-223-6 | U9 |
| 1 | LM337_SOT223 | SOT-223 | U10 |
| 1 | OPA388 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U11 |
| 2 | LT1363 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U12, U13 |
| 2 | Q_NMOS_GDS | PowerMOS | Q1, Q3 |
| 2 | Q_PMOS_GDS | PowerMOS | Q2, Q4 |
| 5 | Conn_01x01_Female | SAFETY-BANANA-JACK-CT3151 | J1, J2, J5, J6, J7 |
| 1 | 302-S141/ AWP 14-8240-T Conn_02x07_Odd_Even | 14PinConn | J3 |
| 1 | 302-S161/ AWP 16-8240-T Conn_02x08_Odd_Even | 16PinConn | J4 |
| 1 | Conn_02x04_Counter_Clockwise | Socket_Strip_Straight_2x04_Pitch2.54mm_SMD | J8 |
| 1 | 1984620 CONN_01X03 | Conn_01X03-3.5mm | P1 |
| 2 | R_POT_TRIM | Potentiometer_Trimmer_Bourns_3214W | RV1, RV2 |
| 2 | SLF10145T-101M1R0-PF 100uH | Inductor_SLF10145 | L1, L2 |
Show 23 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 19 | C0603C104J5RACAUTO 0.1uF | C_0603 | C1, C2, C3, C4, C17, C21, C22, C30 +11 |
| 2 | EEE-1VA221UP 220uF | CAP_polar_220uF | C5, C6 |
| 7 | C3225X7R1H106M250AC 10uF | C_1210 | C7, C8, C12, C15, C23, C26, C27 |
| 2 | T495X476K035ATE300 47uF | CP_Tantalum_Case-X_EIA-7343-43_Reflow | C9, C10 |
| 1 | CL05C220JB5NNNC 22pF | C_0402 | C11 |
| 4 | C1608X7R1H334K080AC 0.33uF | C_0603 | C13, C16, C19, C20 |
| 3 | T491B105K050AT 1uF | CP_Tantalum_Case-B_EIA-3528-21_Reflow | C14, C24, C25 |
| 1 | C0603C104J5RACAUTO 0.1uF | C_0805 | C18 |
| 2 | 1000uF | CAPCITOR_TOT | C28, C29 |
| 1 | 10 | R_0603 | R1 |
| 1 | 5.1 | R_0603 | R2 |
| 4 | 2.5m | R_2512 | R3, R4, R7, R8 |
| 2 | 20 | R_0603 | R5, R6 |
| 1 | R_Shunt | SHR4-3825 | R9 |
| 1 | ERJ-6ENF2004V 2M | R_0805 | R10 |
| 1 | PTN0603E1801BST1 1.8k | R_0603 | R11 |
| 3 | TNPW0603120RBEEA 120 | R_0603 | R12, R15, R16 |
| 1 | CRCW08054K00FKTA 4k | R_0805 | R13 |
| 1 | 6-2176088-6 4.22k | R_0603 | R14 |
| 2 | 500 | R_0805 | R17, R20 |
| 2 | 25k | R_2512 | R18, R19 |
| 4 | 18.2k | R_0805 | R21, R22, R25, R26 |
| 4 | 2.2k | R_0805 | R23, R24, R27, R28 |
Rear 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/rear/rear.kicad_pcb
- SchematicKicad/rear/rear.kicad_sch
Rear: common questions
How big is the Rear PCB?
The Rear measures 145 × 157 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Rear?
99 components, from 43 distinct parts. The full bill of materials is listed on this page.
Where can I download the Rear 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 Rear 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.
