High-Efficiency EMI Filter for PLC Systems: Complete Guide to EMI High Frequency Filter Module DC Component Filter

15. februar 2026

Pre-shipment Inspection Record: This document details the visual and technical inspection of the High-Efficiency EMI Filter for PLC Systems: Complete Guide to EMI High Frequency Filter Module DC Component Filter. All product photos and testing videos below are original materials captured first-hand by the Koeed technical team in our warehouse prior to dispatch.

What this delivery is: three bare-board EMI power-line DC filter modules — the same non-standard design family as our earlier record, silk-screened on the board itself as EMI POWER LINE DC FILTER — brand new, three pieces each with its own bag of mounting screws and standoffs, received stock dated 2026-01-06. This batch reads cleaner than the first lot's photos: the safety capacitor's marking is fully legible, and the board's own name settles what the shopping title was paraphrasing. The delivery record pairs this lot with the earlier purchase of the same boards — the first three units from 2025-11 — so buyers can see both lots side by side.

Reading the board

The board is a long single PCB, no case, with a three-way terminal block at each end (the line side marked LN) and the title silkscreen EMI POWER LINE DC FILTER printed centre-board under a hologram anti-counterfeit sticker. The parts chain runs: two large Nichicon electrolytic capacitors (105 °C, H2210 series) at the DC-conditioning end, then a yellow TENTA MKP X2 safety capacitor rated 0.47 µF / 275 VAC, four copper-wound chokes with green-lacquered tops, a blue-block capacitor section, a red disc MOV, and axial glass-bodied power resistors (195C/6W-marked) bridging the stages. That combination — electrolytics and a diode-conditioned input on one end, X2 film caps and chokes on the other — is what the Chinese product name describes: a module that both strips the DC component from the line and attenuates high-frequency EMI. Like the first lot, these are hand-built boards (component colours vary slightly between units), each with four mounting holes and a bag of screws and standoffs for standoff-mounting inside the protected cabinet.

Item	Value on the board / in the record
Product	EMI POWER LINE DC FILTER — bare-board EMI / DC-component line filter module (silk-screen title)
Safety capacitor	TENTA MKP X2, 0.47 µF, 275 VAC (marked)
DC end	2× Nichicon electrolytics, 105 °C (H2210 series); axial power resistors 6 W-class (195C marking)
Filter stages	4× copper-wound chokes (green lacquer); blue-block capacitor section; disc MOV; three-way terminal blocks both ends (LN marked)
Construction	Bare single PCB, black-finished; four mounting holes; screws and standoffs supplied per board; hologram sticker on the silk title
Related lot	Same design family as the 2025-11 purchase of three boards (linked below)
Condition / quantity / weight	New; 3 pcs with fixing kits; 0.5 kg per the record; stock dated 2026-01-06

Use notes

Integration is the same story as the earlier lot, with one more practical note now that the parts are legible: the X2 capacitor's 275 VAC rating sets the module's AC line ceiling — this is a 230 V-class line filter, not a component for a 400 V phase-to-phase tap without a transformer ahead of it. Mount each board on its standoffs to a grounded plate, keep the input and output harnesses apart so the clean and dirty runs do not couple around the board, and torque the terminal screws with the cabinet de-energised — the terminals land on copper traces with no fuse ahead of them. The three boards are the natural stock for three machines on one supply problem, or one machine with three phase lines each needing treatment. For the first lot's photos and label detail, see the earlier EMI filter module record.

Photos

Two boards angled with silk title — Two boards at an angle: the EMI POWER LINE DC FILTER silkscreen under its hologram sticker, the MOV at the near end, terminal blocks at both ends, and the finned edge of the second board behind.

Component row close-up — The parts in close-up: Nichicon 105 °C electrolytics with the H2210 print, the yellow TENTA MKP X2 capacitor, copper-wound chokes with green lacquer tops, and the axial resistor leads bridging below.

Inspection video.

Three boards with screw kits — All three boards in a row with their fixing kits: each unit gets its own bag of screws and standoffs — three machines, three boards, three hardware sets.

Single board overhead — One board square-on: the silk title, LN marking at the terminal block, the red MOV at the far end, and the full component chain between — mounting holes at the corners.

X2 capacitor marking — The safety capacitor's marking readable: TENTA MKP X2, 275 VAC — the rating that sets this module's line ceiling — with the choke stack behind it.

Board reverse — The reverse of one board: solder-side joints, wide copper runs, and the four mounting holes — the underside a builder actually solders to.

Three board reverses — All three boards face-down with their screw bags at the right — consistent hand assembly across the set, joints and trace work matching board to board.

Three boards on edge — The three boards on edge: component leads and choke bodies showing under the boards, the mounting hardware bags behind — the set as it will stand in a spares drawer.

Need these DC-filter boards, a matching set for your phases, or a bench photo before you order? Send the line voltage and the fault — we confirm stock with pictures.

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