Electric car electronics for Indonesia start with a labelling trap: of 3,076 Walsin Technology (Walsin) MLCC part numbers labelled automotive, 785 are in the MG series, which the export names as without AEC-Q200 certification. The other 2,291 are qualified series, and none of the 3,076 is on our Hong Kong shelf.
Venatech Limited, an authorised Walsin distributor in Hong Kong, wrote this from the Walsin MLCC export (24,026 rows, 23,601 distinct part numbers) and our stock list as at 23 September 2026. It is for a design or sourcing engineer at an Indonesian electric-vehicle assembler or an automotive electronics maker around Bekasi who is crossing a 100 nF capacitor. Every part number is real and every count is ours. The market statements name their sources and the day we fetched them, 10 November 2026.
What did Indonesia report about electric car sales and the Bekasi plants in 2026?
It reported a record pace. According to Kontan (12 October 2026), citing Gaikindo, electric car sales in Indonesia reached 117,218 units in January to September 2026, about 17.26 percent of national car sales and already above the 103,931 units sold in all of 2025.
For the Bekasi side, Industry.co.id reported on 25 September 2025 that Wuling’s plant at Cikarang, Bekasi, a 60-hectare site that began operating in 2017, had built 178,366 vehicles cumulatively through August 2025. Of its domestic sales, 37,765 units (22 percent) were electric, and 3,604 electric units made up 48 percent of its exports. Those are the publishers’ figures, not ours. We have no relationship with Wuling, Gaikindo or any Indonesian assembler, and we say nothing about what any of them buys.
How many Walsin MLCC part numbers are labelled automotive, and how many are AEC-Q200?
3,076 are labelled automotive, in three series. We parsed the MLCC export and counted 3,076 distinct part numbers whose series name contains Automotive: 2,173 in the MT series, qualified to AEC-Q200 by the export’s own series name; 118 in the ST soft-termination series, also named qualified; and 785 in the MG series, named in the export as without AEC-Q200 certification.
So one automotive-labelled part number in four, 25.5 percent, is not named as AEC-Q200. We have not seen this counted anywhere. A second trap sits in the same series: of the 785 MG part numbers, 586 print a negative decimal in the Tolerance column, 366 with -0.1 and 220 with -0.05, where the MT and ST series print a percentage such as +-10%. Read the part-number code, not that column. Our post on MT against MG series gives the background, and the MLCC range lists the families.
Which Walsin parts cross a 100 nF, X7R, 100 V, 0805 automotive brief, and what differs?
Four automotive-labelled parts sit at that exact value, and they differ. We filtered all 23,601 Walsin part numbers on 0805, X7R, 100 nF and 100 Vdc and found 10 across 6 series, 4 of them automotive-labelled: MT21B104K101, MT21B104J101, MG21B104K101 and ST21B104K101; only 1 of the 10 is on the shelf, and it is general purpose.
At 100 nF, X7R and 100 V or more, across all case sizes, the automotive-labelled count is 21: 7 MT, 5 MG and 9 ST.
| Walsin part | Series, case | Value, tolerance, voltage | On shelf 23 Sep 2026 | Match / mismatch against a 100 nF, X7R, 100 V, 0805 AEC-Q200 brief | Your incumbent |
|---|---|---|---|---|---|
MT21B104K101 |
MT (AEC-Q200), 0805 | 100 nF, plus or minus 10%, 100 V, T 1.25 mm | No | Match on every export field | |
MT21B104J101 |
MT (AEC-Q200), 0805 | 100 nF, plus or minus 5%, 100 V | No | Match on value, voltage and series; mismatch: tolerance is plus or minus 5%, tighter | |
ST21B104K101 |
ST soft termination (AEC-Q200), 0805 | 100 nF, plus or minus 10%, 100 V | No | Match on the electrical fields; mismatch: soft termination, a different construction | |
MG21B104K101 |
MG (without AEC-Q200), 0805 | 100 nF, 100 V, tolerance column prints -0.1 | No | Mismatch: the series is named as without AEC-Q200 | |
0805B104K101 |
General purpose, 0805 | 100 nF, plus or minus 10%, 100 V | Yes | Match on the electrical fields; mismatch: not an automotive series |
A match in the table is a match on the export fields, no more. Confirm against both datasheets and qualify in your own circuit. AEC-Q200 documentation is a separate request: ask for the qualification report for the exact part number, because the export prints a series name, not a certificate. Our post on what AEC-Q200 actually certifies explains the limit of that wording.
What does the Hong Kong shelf hold in these MLCC lines?
General purpose only. Our stock list as at 23 September 2026 holds 1,125 distinct part numbers, 764 of which match a row in the MLCC export; none of the 3,076 automotive-labelled part numbers is among them, and the one shelf part at the 0805, 100 nF, X7R, 100 V value is 0805B104K101.
Anything in the MT, MG or ST series is therefore a factory order, requested through the site. The ready stock list is a dated snapshot, never live-synced, and we quote part-number counts, never piece counts.
What will we not tell you about electric cars?
Anything about a vehicle, a battery pack or a customer approval. We hold 28 Walsin datasheets, 451 pages, and the MLCC export prints no field for AEC-Q200 test reports, lot traceability or a PPAP package, so we cannot confirm any of those for any of the 3,076 parts.
We make no claim that any part suits a traction inverter, a charger or a battery-management board, or that Walsin’s wording meets a customer’s approval. We hold no ISO 9001 or IATF 16949 certificate. We hold no office, entity or stock in Indonesia; our locations are Hong Kong, Shenzhen, Singapore and Jiangmen, with Chengdu in preparation. We give no legal, customs or conformity advice; confirm with your compliance team. Qualification stays with you.
How can Venatech help a Bekasi EV electronics buyer?
By showing the series label next to every candidate. Venatech Limited is an authorised Walsin distributor in Hong Kong, and our VenaMatch tool decodes 18 manufacturers’ part numbers and covers 800,000+ crossable parts, with each candidate’s differences stated.
- Cross-reference. Paste your incumbent into the free cross-reference tool, up to 500 part numbers or an Excel or CSV file, and filter by commercial or automotive grade.
- BOM check. Upload the bill of materials to /bom/ and request a quote.
- Ready stock. The ready-stock list is a Hong Kong snapshot dated 23 September 2026, not live.
- Service. Hong Kong-based, small lots welcome. Walsin is the only line we are authorised for; Stackpole and Viking are lines we supply.
Worked example from our own export: a 100 nF, X7R, 100 V, 0805 automotive brief maps to 4 automotive-labelled parts, 1 exact match, 1 without AEC-Q200, and none on the shelf. Qualification stays with you.
The short version
For an Indonesian electric-vehicle buyer, 785 of the 3,076 Walsin MLCC part numbers labelled automotive are the MG series, named as without AEC-Q200; a 100 nF, X7R, 100 V, 0805 brief has 4 automotive-labelled parts and 1 exact match; and the Hong Kong shelf holds none of the 3,076.
Send us one automotive capacitor line from your BOM, with the series, tolerance and voltage you can accept, and we will return the Walsin parts with every difference stated. If your drawing says only automotive, do you know whether you are buying MT, MG or ST?
Sources
Fetched 10 November 2026.
- Kontan, ten best-selling electric cars in Indonesia through September 2026, 12 October 2026: https://industri.kontan.co.id/news/10-mobil-listrik-terlaris-di-indonesia-hingga-september-2026
- Industry.co.id, Wuling production in Indonesia, 25 September 2025: https://www.industry.co.id/read/144982/wuling-perkuat-industri-otomotif-ri-dengan-produksi-178-ribu-unit-40-ribu-diantaranya-mobil-listrik
Related reading
- AEC-Q200 MLCC: MT against MG series
- What AEC-Q200 actually certifies
- Soft termination MLCC: SH, SG, ST and VT
- Free cross-reference tool (VenaMatch)
- Ready stock, Hong Kong snapshot dated 23 September 2026
Last reviewed 10 Nov 2026.
Frequently asked questions
How many electric cars did Indonesia sell in 2026?
Kontan reported on 12 October 2026, citing Gaikindo, that electric car sales reached 117,218 units in January to September 2026, about 17.26 percent of national car sales and above the 103,931 units sold in all of 2025. These are the publisher’s figures, not ours.
What is the Wuling plant in Bekasi?
Industry.co.id reported on 25 September 2025 that Wuling’s plant at Cikarang, Bekasi, on a 60-hectare site, began operating in 2017 and had built 178,366 vehicles cumulatively through August 2025. We have no relationship with Wuling and say nothing about its purchasing.
How many Walsin MLCC part numbers are labelled automotive?
We counted 3,076 distinct part numbers: 2,173 in the MT series, 118 in the ST series and 785 in the MG series. The export names MT and ST as qualified to AEC-Q200 and MG as without AEC-Q200 certification. Ask for the qualification report for your exact part number.
Is the Walsin MG series AEC-Q200?
The MLCC export names the MG series as automotive caps without AEC-Q200 certification, so treat it as not AEC-Q200 unless the datasheet and a qualification report for your exact part say otherwise. 586 of its 785 part numbers also print a negative decimal in the Tolerance column.
Which Walsin part matches a 100 nF, X7R, 100 V, 0805 AEC-Q200 capacitor?
MT21B104K101 matches on every export field: 0805, X7R, 100 nF, plus or minus 10 percent and 100 V. MT21B104J101 has a tighter plus or minus 5 percent tolerance. Neither is on our shelf. Qualify in your own circuit.
Do you hold stock or an office in Indonesia?
No. We hold no office, entity or stock in Indonesia; our locations are Hong Kong, Shenzhen, Singapore and Jiangmen. We hold no ISO 9001 or IATF 16949 certificate and give no legal, customs or conformity advice. Confirm with your compliance team.