Bjt amp
Halogenek·modular-rf-bench·src/bjt-amp/bjt-amp.kicad_pcb
About the Bjt amp PCB
Bjt amp is an open source PCB design by Halogenek, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 20 × 20 mm, with 26 components from 16 distinct parts.
By type, the board carries 10 resistors, 6 capacitors, 3 connectors, 2 inductors and 1 transistor.
From the project
Cheap and simple setup for learning RF electronics
I came across an awesome system for rapid prototyping RF and Microwave solutions by connecting individual components on small PCBs, just like LEGO. This Modular building block system for RF and microwave design of prototypes is in my opinion a very clever way of building RF circuits. On their website the sell almost every available modern RF IC or passive network in a form of a rectangle PCBs.

Bjt amp bill of materials (BOM)
26 components, 16 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Q_NPN_BEC | SOT-23 | Q1 |
| 1 | Conn_01x01 | SolderWire-0.25sqmm_1x01_D0.65mm_OD1.7mm | J1 |
| 2 | Conn_01x02 | edge-connector | J2, J3 |
| 4 | M2 | M2-hole | H1, H2, H3, H4 |
| 1 | LP | L_0603_1608Metric | L1 |
| 1 | LB | L_0603_1608Metric | L2 |
| 1 | CIN | C_0603_1608Metric | C1 |
| 1 | 1µ | C_0603_1608Metric | C2 |
| 1 | 100n | C_0603_1608Metric | C3 |
| 2 | 100p | C_0603_1608Metric | C4, C6 |
| 1 | COUT | C_0603_1608Metric | C5 |
| 6 | Z | R_0603_1608Metric | R1, R2, R3, R8, R9, R10 |
| 1 | RB2 | R_0603_1608Metric | R4 |
| 1 | RB1 | R_0603_1608Metric | R5 |
| 1 | RC | R_0603_1608Metric | R6 |
| 1 | RE | R_0603_1608Metric | R7 |
Bjt amp design files
The KiCad project lives in the Halogenek/modular-rf-bench repository on GitHub; these links point at the commit this page was built from.
- Layoutsrc/bjt-amp/bjt-amp.kicad_pcb
- Schematicsrc/bjt-amp/bjt-amp.kicad_sch
Bjt amp: common questions
How big is the Bjt amp PCB?
The Bjt amp measures 20 × 20 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Bjt amp?
26 components, from 16 distinct parts. The full bill of materials is listed on this page.
Where can I download the Bjt amp design files?
From the Halogenek/modular-rf-bench repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Bjt amp design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which Halogenek chose for the repository.
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