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• There is no publicly released “integrated-circuit sheet” (factory schematic or IC datasheet package) for the Parkside‐branded angle grinder marketed as PWS / PAS 125 F5.
• Parkside/Lidl do not publish service documentation; the motor-control board normally uses an off-the-shelf phase-angle or soft-start IC (e.g. U2008B, TDA1085C, or a small 8-bit MCU) plus a TRIAC.
• To obtain the exact datasheet you must first identify the IC marking on the actual PCB, then download the datasheet directly from the semiconductor manufacturer or a datasheet aggregator.
Typical electronic architecture of Parkside 115 – 125 mm grinders
• Universal (AC series) motor ≈ 710-1200 W
• Phase-angle speed controller (potentiometer → control IC → TRIAC gate)
• Soft-start (either inside the IC or by NTC thermistor)
• Snubber + EMI network (R-C + common-mode choke)
| Common IC families found in Parkside/Lidl tools IC |
Function | Package |
|---|---|---|
| U2008B / U2010B | Phase-angle & soft-start control | 8-DIP / SO-8 |
| TDA1085C | Closed-loop speed governor | 16-DIP / SO-16 |
| TCA785 / TCA780 | Dual-mode triac controller | 16-DIP |
| ST7 / STM8 MCU | Firmware-based triac drive | SO-20 / TSSOP |
| PIC12F675 etc. | As above (cost-reduced versions) | 8-SOIC |
If the IC on your board carries a house code (e.g. “6A12” or a Parkside logo) it is often a relabelled version of one of the above. Pin-1 orientation, package and pin-count usually allow rapid cross-identification.
Why Parkside does not release a dedicated “IC sheet”
• The electronics are assembled by an ODM (Kompernass, Grizzly, etc.) who license documentation only to service depots.
• Tools are considered non-field-repairable; warranty swaps are cheaper than publishing repair data.
• The control board itself is replaced as a module rather than at component level.
Reverse-engineering workflow
a) Isolate tool from mains, remove disc and handle.
b) Undo four housing screws; lift the half-shell with the cord grommet first.
c) The small potting-free PCB behind the trigger contains the IC.
d) Photograph the IC under raking light; clean with IPA if flux obscures markings.
e) Search the full part code + “datasheet pdf”.
f) Verify package, pin count and that pins 2 & 7 (example for U2008B) go to the TRIAC gate network.
• 2023-2024 Parkside production batches increasingly use tiny MCUs (STM8S003F3 or Nuvoton N76) rather than dedicated analogue ICs, allowing programmable soft-start curves and overload cut-out.
• EU “Right to Repair” legislation (Directive (EU) 2019/771) is pushing brands to supply spare parts for at least 7 years; some service PDFs are beginning to leak on forums such as Elektroda (link already present in online answer).
• Replacement controller boards for PWS/PAS 125 cost €8 – €12 on AliExpress; many are pin-compatible with Boschette and Einhell grinders.
Phase-angle controller maths:
\[ \alpha = \arccos!\left(1-\frac{V\text{set}}{V\text{ref}}\right) \]
where α is the trigger delay invoked by the control IC; firing angle controls RMS voltage \(V\text{RMS}\approx V\text{m}\sqrt{\frac{1}{2\pi}\bigl(\pi-\alpha+\tfrac{1}{2}\sin 2\alpha\bigr)}\).
Soft-start: a capacitor on the IC’s C-soft pin charges through R-soft, ramping α from 180°→desired α over ≈ 200 ms, reducing inrush to < 3 × nominal.
Example pinout (U2008B):
1 = GND, 2 = Output (to TRIAC gate through R), 3 = Sense, 4 = Vref 2.5 V, 5 = Soft-start cap, 6 = Pot wiper, 7 = Mains supply (~15 V via dropper R/C), 8 = NC.
• Mains-voltage repairs expose lethal potentials; ensure isolation transformer and RCD when probing live circuits.
• Modifying speed controllers can void CE conformity and the grinder’s double-insulation rating.
• Datasheets are copyright of semiconductor vendors; sharing them is legal, but redistributing Parkside’s service schematics may breach NDA.
Identification checklist
▢ Tool unplugged ▢ Anti-static strap ▢ High-res photo
Typical failures
• Open circuit dropper resistor → controller dead
• Burst input capacitor → soft-start lost, full speed only
• TRIAC short → motor starts immediately at plug-in
Bench checks (refer to datasheet once IC identified)
• VCC to IC pin (e.g., 15 VDC) present?
• Gate pulse 3–5 V into 220 Ω resistor?
• Potentiometer 0 – 100 kΩ linear across Vref / GND?
Replacement options
a) Exact IC from Mouser/Digi-Key if still active.
b) Pin-compatible alternative (e.g., UTC U2008B-S vs Infineon U2008B).
c) Swap entire PCB (fastest, <$15).
• Some Parkside boards are fully potted with silicone; component-level repair is then impractical.
• Newer brushless “X-20 TEAM” grinders use sensorless BLDC drivers; the information above only applies to brushed AC models.
• Search term “U2008B Parkside angle grinder” on Elektroda and VK-repair groups.
• Study Infineon application note AN‐978, “Phase-Control for Universal Motors”.
• Monitor EU Right-to-Repair repositories (https://repair.eu) for future document releases.
• Explore open-hardware replacement boards such as “Open-Grinder-Control” on GitHub (STM32-based).
There is no dedicated “integrated circuit sheet” for the Parkside PAS/PWS 125 F5 because the grinder’s control board uses a standard triac-driver IC or a small MCU whose datasheet must be obtained by reading the part number directly from your unit and downloading it from the semiconductor vendor. Reverse-engineer the board, cross-check against common controller IC families, and follow safe-mains repair practices.
