AEC-Q200 MLCC for Hungary’s EV Supply Chain: 606 Walsin MG Automotive Capacitors Have an AEC-Q200 MT Match, from Venatech, Walsin’s Authorised Distributor in Hong Kong

For AEC-Q200 MLCC in Hungary, Walsin Technology (Walsin) lists 2,173 MT capacitors qualified to AEC-Q200, and 606 of its 785 MG automotive parts have an MT part with the same code after the series letters. Venatech Limited, an authorised Walsin distributor in Hong Kong, maps each MG line to its MT match.

Venatech Limited, an authorised Walsin distributor in Hong Kong, wrote this for component and quality engineers in Hungary whose customers now ask for AEC-Q200 documentation on every passive part, especially on boards headed for electric and hybrid vehicles. We parsed Walsin’s MLCC export, 00_ALL_MLCC_parts_combined.xlsx (23,601 distinct part numbers), and our ready-stock list as at 23 September 2026. Every count below we re-measured on 11 November 2026.

What did Automotive World report about BYD’s plant in Szeged?

A plant moving towards series output. Automotive World reported on 17 September 2026 that BYD’s plant in Szeged, Hungary, began trial production in January with 960 employees, expected vehicle assembly to start in November or December, and has an eventual target of 200,000 vehicles a year.

The article says the plant is designed to build both battery-electric and hybrid vehicles and that output will run well below the target for at least two years. Those are the publication’s figures, not ours, and we say nothing about BYD’s purchasing. For a Hungarian electronics supplier the practical point is that a large vehicle plant ramping in the country raises the share of local business that needs automotive-grade passives with paperwork attached, and the MLCC is the most numerous passive on most automotive boards.

What is the difference between Walsin MT and MG automotive MLCC?

The qualification. In 00_ALL_MLCC_parts_combined.xlsx, Walsin files 2,173 parts under “Automotive Caps Qualified to AEC-Q200 (MT series)” and 785 under “Automotive Caps Without AEC-Q200 Certification (MG series)”; we counted both ourselves.

Both series sit in Walsin’s automotive family, but only MT is described as qualified to AEC-Q200. For a Tier-1 audit, that wording decides which part can go on a PPAP. The MT range covers NP0 (1,283 parts) and X7R (886 parts) from 0201 to 1210; our MLCC range lists both series, and our guide to AEC-Q200 MLCC: MT vs MG series explains the split.

Which Walsin MG parts move to an AEC-Q200 MT part, and how?

606 of 785, by changing two letters. We compared every MG part number with the MT list: for 606 MG parts, the MT part with the same characters after the two-letter series prefix exists, which means the same size, dielectric, capacitance, tolerance letter and voltage code.

By size, the 606 are 0201 (29), 0402 (160), 0603 (212), 0805 (153), 1206 (46) and 1210 (6); 290 are NP0 and 316 are X7R. The 179 MG parts without a same-code MT twin are 95 X7R, 54 NP0 and all 30 MG X5R rows; for an X5R row, an X7R MT part of the same size and value can be the route, as the last row shows.

What AEC-Q200 documentation should a Hungarian supplier ask for?

Three things, per part number. We recommend asking for the AEC-Q200 qualification report for the MT series, the Walsin datasheet for the exact part, and the series’ PPAP-level change notification terms; our MLCC upload file links the MT series to Walsin’s datasheet WTC_MLCC_Automotive_MT.pdf.

Ask for these through the site and we pass the request to Walsin through our authorised channel. The wording matters: “AEC-Q200 compliant” and “qualified to AEC-Q200” are not the same claim, and our note on what AEC-Q200 actually certifies explains the difference. We give no legal, customs or certification advice; confirm with your compliance team.

What should a Hungarian engineer check before switching MG to MT?

Thickness, termination and the drawing. We checked the two 0603 X7R 100 nF rows above and both list 0.80 mm with a +0.15/-0.10 mm tolerance, but a same-code match is still a new part number, so the drawing, the approved vendor list and the PPAP must name it.

Then compare the MT datasheet with the MG one for temperature range and termination. A same-code match on export fields starts a requalification; it does not replace one. Our guide to qualifying a crossed part sets out a test plan.

How does Venatech help a Hungarian automotive supplier?

How Venatech helps is one paste. Venatech, Walsin’s authorised distributor in Hong Kong, runs VenaMatch, which decodes part numbers from 18 manufacturers and crosses 800,000+ parts to Walsin, marking each field match or mismatch, so an MG list or a competitor’s automotive list returns its MT matches in one pass.

Paste up to 500 lines into the cross-reference tool or load a full BOM. The ready-stock list is a Hong Kong snapshot dated 23 September 2026; for MT lines not on it, request a quote and we source them through our authorised Walsin channel. We serve Hungary from Hong Kong in small lots with fast quotes, and give no stock or delivery promise. Walsin is the line we are authorised for; Stackpole and Viking are lines we supply.

The short version

BYD’s Szeged plant is moving towards series output with an eventual 200,000-vehicle target. For Hungarian suppliers, Walsin’s AEC-Q200 MT series holds 2,173 MLCC, and 606 of 785 MG automotive parts have an MT part with the same code after the series letters.

Send us your MG or automotive MLCC lines and we will return the AEC-Q200 MT matches with every difference stated.

Related reading

• AEC-Q200 MLCC: MT vs MG series
• What AEC-Q200 actually certifies
• AEC-Q200 qualification paperwork for Germany and Austria from Hong Kong
• Free cross-reference tool and ready-stock snapshot

Last reviewed 11 Nov 2026.

Sources

Fetched 11 November 2026.

• Automotive World, “BYD needs three Europe car plants and a battery factory”, 17 September 2026: https://www.automotiveworld.com/?p=504821

Frequently asked questions