Cost and lead time for communication PCB reverse engineering are driven by four things: layer count, whether the board has controlled-impedance differential routing, how many fine-pitch BGAs and house-marked parts sit on it, and whether you also need firmware off the management MCU. A two-layer serial gateway is a small job measured in days. A 12- or 16-layer line card with SerDes lanes, an RF front end, and a locked CPLD is a multi-week engineering project, and it should be quoted as one.
Below is how we scope these boards, what changes the number, what we need from you, and what we can’t promise.
What Communication PCB Reverse Engineering costs, and what moves the number
Communication boards price differently from a motor drive of the same physical size, because the electrical requirements are tighter and the recovery work is not just “trace out the nets.” Here’s what an estimator is actually looking at.
- Layer count and stackup structure. Every internal layer has to be imaged separately after controlled delamination. An 8-layer board isn’t twice the work of a 4-layer — plane splits, stitching vias, and reference-plane assignments all have to be resolved before the netlist means anything. A single mis-assigned reference plane on a gigabit pair makes the whole recovery useless.
- Controlled impedance. If the board runs 100 Ω differential pairs for Ethernet, SerDes, PCIe, or DDR, copying geometry alone isn’t enough. We need dielectric thicknesses, copper weights, and a defensible Dk assumption, confirmed by microsection and, where the customer needs it, TDR on the original. The design intent lines up with the guidance in IPC-2141 and the general rules in IPC-2221, but the numbers have to come off your board, not a textbook.
- BGA and HDI density. A switch ASIC in a 0.8 mm or 0.65 mm pitch BGA with stacked microvias needs X-ray plus layer-by-layer correlation to get the escape pattern right. Blind and buried vias add a whole drill-file dimension that most non-comms boards never have.
- Component identification. Telecom OEMs love house numbers. Ethernet magnetics, SAW filters, baluns, retimers, and clock generators often arrive with a proprietary code or a sanded top. Each unknown costs decode time, and magnetics in particular may need electrical characterization to pin down turns ratio, inductance, and isolation rating.
- Board material. Standard high-Tg FR-4 is straightforward. A mixed stackup with a low-loss or PTFE-based section under the RF front end changes both the recovery method and the fabrication note set, and it usually means an extra coupon and an extra microsection.
- Power and isolation geometry. PoE injectors and PSE ports carry real current across isolation barriers. Copper weights, creepage and clearance distances, and conductor widths have to be measured and documented, with trace sizing sanity-checked against IPC-2152 rather than eyeballed from the artwork.
- Firmware scope. Board-level recovery and code recovery are separate line items. A management STM32 at RDP Level 1, a boot image in external SPI flash, an SFP module EEPROM, and an encrypted FPGA bitstream are four different feasibility questions with four different answers.
- Deliverable set. Gerbers plus BOM is the cheapest useful output. A verified schematic with meaningful net names, a fabrication drawing with an impedance table and IPC-6012 class call-out, pick-and-place data, and a working assembled sample is a different order of effort.
We don’t publish a price list for this work, and any shop that does is quoting a board it hasn’t seen. Send photos and dimensions and you’ll get a real number. If you want the general pricing logic for the whole category first, our breakdown of how reverse engineering quotes are built explains which variables carry the most weight.
How long each class of communication board takes
These are working ranges from similar jobs, not guarantees. Lead time starts when the board physically arrives, not when you send the photos.
| Board class | Typical layers | What drives the schedule | Relative lead time |
|---|---|---|---|
| Serial / RS-485 / Modbus gateway | 2–4 | Simple nets, through-hole and 0603 passives, one MCU | Shortest — a few working days |
| Wi-Fi / BLE module carrier board | 4 | Antenna feed geometry, shield can removal, module footprint | Short, plus RF geometry checks |
| Managed Ethernet switch board | 6–8 | 100 Ω pairs, magnetics decode, PHY and switch BGA escapes | Roughly two to three times a 4-layer job |
| PoE injector / PSE card | 4–6 | Isolation barriers, creepage, heavy copper current paths | Moderate; extra time on power geometry |
| Optical / SFP line card | 8–14 | SerDes lane matching, retimers, mixed laminate, cage footprints | Multi-week |
| Base station RF front end | 6–12 | Low-loss laminate, tuned traces, unmarked filters, calibration data | Longest and least predictable |
Firmware work runs in parallel where possible, but it can extend the critical path. Whether a locked device yields at all depends on the part and its protection state, so we assess that separately before we commit to a date.
Two ways to compress the schedule
Send two identical boards. One becomes the sacrificial unit for delamination, cross-sectioning, and component removal; the other stays intact as the electrical reference and the target for continuity verification. Working from a single board forces us to sequence everything serially and can add a week on a dense stackup.
The second lever is scope. If you only need to build spares, Gerbers, drill files, BOM, and a fabrication drawing get you there faster than a fully annotated schematic. If you plan to modify the design or swap an obsolete PHY, you need the schematic and the netlist, and that’s worth the extra days.
What happens to the board in the lab
Concretely, in this order:
- Intake and documentation. High-resolution scans of both sides before anything is touched, plus silkscreen, revision marks, connector keying, and date codes. We log outline, thickness, surface finish, and any conformal coating.
- X-ray. Buried via structures, BGA ball counts, and internal plane outlines get imaged before anything is cut. This is where we learn whether the build uses stacked microvias or is a straight through-hole stackup, and it’s why non-destructive imaging before teardown saves rework later.
- Cross-section. A coupon from the sacrificial board gives layer count, dielectric thicknesses, copper weights, and plating thickness. Without this, the impedance numbers in your fabrication notes are guesses, and the finished board is judged against IPC-A-600 with no baseline.
- Component removal and identification. Parts come off in mapped order. Values get measured, markings get decoded, and house-numbered parts get characterized electrically or matched by function and package. Magnetics get tested, not assumed.
Working on a board like this?
Send the chip marking or two photos. You get feasibility, lead time and price within 24 hours, and the check costs nothing.
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