AEC-Q200 Soft Termination MLCC for Romania’s Car Plants: 118 Walsin ST Capacitors from 10 V to 3,000 V, from Venatech, Walsin’s Authorised Distributor in Hong Kong

For AEC-Q200 soft termination MLCC in Romania, Walsin Technology (Walsin) offers 118 ST-series capacitors from 10 V to 3,000 V, and 88 of them share their code with a Walsin SH or MT part, which simplifies a PPAP change. Venatech Limited, an authorised Walsin distributor in Hong Kong, maps your lines to ST.

Venatech Limited, an authorised Walsin distributor in Hong Kong, wrote this for quality and component engineers in Romania whose customers in Mioveni and Craiova expect a full PPAP for every passive part, and who use flexible-termination capacitors on boards near connectors, screws or large heat sinks. 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 ACAROM’s figures show for Romanian car output to September 2026?

Two plants, close together. Ziarul Financiar, citing ACAROM data on 15 October 2026, reported that Romania built 355,715 cars in January to September 2026, with Dacia Mioveni at 182,558 and Ford Otosan Craiova at 173,157, a gap of 9,401 cars between the plants against 29,800 a year earlier.

The same report says Craiova built 54,589 cars in the third quarter against 53,044 at Mioveni, and that national output for the nine months was 10.9 percent below 2025. Those are the paper’s figures. For a Romanian electronics supplier, two vehicle plants of near-equal size mean two customer audits with the same expectation: every capacitor on a PPAP must be an automotive-qualified part with documents behind it. We say nothing about either plant’s suppliers.

What does the Walsin ST series cover?

AEC-Q200 with flexible termination. We counted 118 parts in Walsin’s “Automotive Soft term Caps Qualified to AEC-Q200 (ST series)”, 115 of them X7R and 3 NP0, from 0402 to 2220 and from 10 V to 3,000 V, with values up to 22 µF in 1210.

Soft termination puts a conductive polymer layer under the plating so the termination flexes before the ceramic cracks. On a car board that sees vibration and screw torque, that is the reason to specify ST. Our guide to soft-termination MLCC: SH, SG, ST and VT compares the series, and our MLCC range lists them all.

Which ST parts share a code with an SH or MT part?

Eighty-eight of 118. We compared every ST code after its two-letter prefix with the SH soft-termination list and the MT automotive list: 74 ST parts have an SH part with the same code and 67 have an MT part with the same code, and 88 have at least one of the two.

That pattern gives a Romanian team a clean path: build engineering samples on the SH part we hold in Hong Kong, then release production on the ST part with the same code and the AEC-Q200 documents. We checked that both shelf SH parts, SH18B104K500 and SH31B475K500, have an ST twin.

Which PPAP documents should a Romanian supplier ask for on an MLCC?

The qualification evidence and the datasheet. We recommend asking, per ST part number, for Walsin’s AEC-Q200 qualification report for the ST series, the Walsin datasheet for the exact part, and the series’ change-notification terms; these support PPAP elements such as design records and the part submission warrant.

Ask through the site and we pass the request to Walsin through our authorised channel. Which elements your customer requires depends on its submission level. Our article on automotive passive components and Tier-1 PPAP submission sets out the elements. We give no legal, customs or certification advice; confirm with your compliance team.

What should a Romanian engineer check before approving an ST part?

Thickness and bend rating. We note that the ST rows list wider thickness tolerances than their MT twins, for example 0.80 ± 0.30 mm for ST18B104K500 against +0.15/-0.10 mm for MT18B104K500, so check the pick-and-place and the keep-out height.

Then take the bend-test figure and the temperature range from Walsin’s datasheet for the exact part. A same-code match on export fields starts a requalification, not the end of one. Our note on flex cracking and board bend explains why the bend rating matters.

How does Venatech help a Romanian 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, with every field marked match or mismatch, so a competitor’s flexible-termination line returns its ST match.

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 ST lines not on it, request a quote and we source them through our authorised Walsin channel. We serve Romania 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

Romania built 355,715 cars in nine months, split almost evenly between Mioveni and Craiova. For PPAP-ready flexible-termination capacitors, Walsin’s AEC-Q200 ST series offers 118 parts from 10 V to 3,000 V, and 88 share their code with an SH or MT part.

Send us your MLCC lines and we will return the ST matches with every difference stated.

Related reading

• Soft-termination MLCC: SH, SG, ST and VT
• Automotive passive components: Tier-1 PPAP submission
• Flex cracking and board bend: why soft termination exists
• Free cross-reference tool and ready-stock snapshot

Last reviewed 11 Nov 2026.

Sources

Fetched 11 November 2026.

• Ziarul Financiar via Orange Romania, “Devine Ford Otosan principala uzina?”, 15 October 2026: https://www.orange.ro/info/news/zf/article/devine-ford-otosan-principala-uzina-noua-luni/3001729

Frequently asked questions