2 layers100 × 85 mm
2 layers53 × 29.5 mm
ActiveDifferentialProbe
profdc9/ActiveDifferentialProbe8A RF Differential Probe based on the 2SC3356 transistor
- Size
- 53 × 29.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 74
- Nets
- 31
- Pads
- 132
- Tracks, vias
- 389, 88
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 21 Apr 2020
- Updated
- 29 Apr 2020
Overview
ActiveDifferentialProbe is an open-source printed circuit board by profdc9, from the profdc9/ActiveDifferentialProbe repository on GitHub. It is a 2-layer board of 53 × 29.5 mm with 74 parts on 31 nets, routed with 389 tracks and 88 vias.
It is built around the 2SC3356. Its parts include 27 connectors, 26 resistors, 13 capacitors, 7 transistors and 1 diode. It belongs with the radio and wireless and sensors and measurement boards of this library.
Main components
1README
README.mdThis is an Active RF Differential Probe based on a cheaply available 2SC3356 Bipolar Transistor by Daniel L. Marks, KW4TI. Dual gate Mosfets are getting hard to find, so this is what I suggest as an alternative.
The bandwidth is approximately 1 GHz (-3 dB) with 6 dB gain at low frequency.
The PCB design is distributed under the Creative Commons Shared Alike Attribution (CC-BY-SA 4.0) license.
Parts
74| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | Conn_01x01 | ActiveDifferentialProbe:BigSlot | J6, J7, J10, J11, J12, J13, J14, J15, J17, J20, J21, J22, J23, J24, J26, J27 +2 |
| 8 | Conn_01x01 | ActiveDifferentialProbe:PadHole | J1, J2, J3, J4, J5, J16, J18, J19 |
| 7 | 220R | Resistors_SMD:R_0805_HandSoldering | R2, R3, R5, R10, R24, R25, R26 |
| 7 | 2SC3356 | TO_SOT_Packages_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7 |
| 6 | 100 nF | Capacitors_SMD:C_0805_HandSoldering | C2, C7, C9, C10, C11, C12 |
| 6 | 10R | Resistors_SMD:R_0805_HandSoldering | R15, R16, R17, R18, R19, R22 |
| 4 | 10 nF | Capacitors_SMD:C_0805_HandSoldering | C3, C5, C6, C8 |
| 3 | 47k | Resistors_SMD:R_0805_HandSoldering | R1, R11, R12 |
| 2 | 100 pF | Capacitors_SMD:C_0805_HandSoldering | C1, C4 |
| 2 | 100R | Resistors_SMD:R_0805_HandSoldering | R6, R9 |
| 2 | 10k | Resistors_SMD:R_0805_HandSoldering | R4, R13 |
| 2 | 22R | Resistors_SMD:R_0805_HandSoldering | R7, R8 |
| 2 | NC | Resistors_SMD:R_0805_HandSoldering | R20, R23 |
| 1 | 0R | Resistors_SMD:R_0805_HandSoldering | R21 |
| 1 | 1k | Resistors_SMD:R_0805_HandSoldering | R14 |
| 1 | 22 uF | Capacitors_SMD:C_0805_HandSoldering | C16 |
| 1 | Conn_Coaxial | ActiveDifferentialProbe:Amphenol_RF_SMA_132289 | J25 |
| 1 | LED | LEDs:LED_0805_HandSoldering | D6 |
Questions
How big is the ActiveDifferentialProbe PCB?
It measures 53 × 29.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the ActiveDifferentialProbe use?
74 parts, built around the 2SC3356. 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 ActiveDifferentialProbe KiCad files?
From the profdc9/ActiveDifferentialProbe repository on GitHub, at the commit this page was made from: the board is ActiveDifferentialProbe.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the ActiveDifferentialProbe design in my own project?
Its repository states no licence, so its author keeps all rights: ask profdc9 before reusing the design.
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