Our MLCC ex stock list is a dated snapshot, not a feed: 1,125 part numbers, as at 23 September 2026. 864 of them are MLCC codes and 764 resolve to a row in Walsin’s parametric export. 555 of those 764 sit between 0201 and 0805. The file is also two registers, concatenated.
Venatech Limited, an authorised Walsin distributor in Hong Kong, publishes one stock file, and we would rather you knew its limits than took it on faith. This post is measured from the Hong Kong in-stock workbook — a single .xlsx sheet read with header=3, dated 23 September 2026 in row 2 despite a filename that says September 25 — joined to Walsin Technology (Walsin) 00_ALL_MLCC_parts_combined.xlsx. Every part number below is real, and every count is of part numbers, never pieces.
What does MLCC ex stock actually mean on a dated snapshot?
It means a part number was on a shelf on one named day. We counted the file: 1,125 part numbers, split across seven product-line labels, with a quantity column for each of two internal holding locations and a combined total. A snapshot is not an availability promise and we will not dress it up as one. What it is good for is cutting a candidate list from thousands to dozens before anyone asks a lead-time question.
| Product line label in the snapshot | Part numbers | Share of 1,125 |
|---|---|---|
| MLCC | 732 | 65.1% |
| Chip resistor | 254 | 22.6% |
| MLCC (specialty) | 132 | 11.7% |
| Safety capacitor | 3 | 0.3% |
| Inductor | 2 | 0.2% |
| Resistor array | 1 | 0.1% |
| Other | 1 | 0.1% |
So the shelf is 864 MLCC codes and 254 chip resistor codes, and everything else is a rounding error. The chip resistor side is almost entirely one family: we grouped the 254 codes by prefix and found 237 WR general purpose, 8 WF thin film, 5 MF, 3 WW and 1 SR. If your shortage is a thick film general purpose resistor, this list is deep. If it is an inductor, it is two part numbers and you should be looking at the catalogue, not the shelf.
What case sizes and series are actually on the shelf?
Small and general purpose, overwhelmingly. We joined all 1,125 catalogue codes to 00_ALL_MLCC_parts_combined.xlsx and 764 returned a unique export row. Of those, 555 — 72.6% — are 0201 to 0805, and 490 of 764 are in the General Purpose Caps series. The second-largest block is high voltage: 149 codes in Middle to High Voltage Caps (200V-4kV). We have not seen a distributor publish this shape of its own shelf before.
| Case size | Codes held (of 764) | Share | Case size | Codes held | Share |
|---|---|---|---|---|---|
| 0603 | 155 | 20.3% | 1210 | 47 | 6.2% |
| 0402 | 152 | 19.9% | 1812 | 41 | 5.4% |
| 0805 | 149 | 19.5% | 1808 | 15 | 2.0% |
| 1206 | 102 | 13.4% | 2220 | 3 | 0.4% |
| 0201 | 99 | 13.0% | 2211 | 1 | 0.1% |
| Walsin series | Codes held (of 764) | What that tells a buyer |
|---|---|---|
| General Purpose Caps | 490 | The decoupling shelf. 0201 to 1206, mostly X7R and NP0 |
| Middle to High Voltage Caps (200V-4kV) | 149 | Real high-voltage depth, including 1812N680J302 at 3,000 Vdc |
| Microwave Caps (RF series) | 66 | Small-value NP0 for matching networks |
| Soft Termination Capacitors (SH series, Ag-poly) | 30 | Board-flex positions |
| High Q & Low ESR Caps (HH series) | 22 | 0201 and 0402 only, e.g. HH03N0R4B500 at 0.4 pF |
| Big sizes, HT, S2 and UF series | 7 combined | Thin. Treat these as catalogue items, not shelf items |
The dielectric split on those 764 codes is 381 NP0, 325 X7R, 51 X5R, 3 X6S, 3 X8G and a single Y5V. There is one X8G code family and three X8G codes in the whole shelf, which matters if your temperature-stable position has drifted upward in requirement.
Why is the snapshot two registers rather than one?
Because two systems were pasted together, and we can show you exactly where the seam is. 683 of the 1,125 rows carry a description, and exactly the same 683 carry a date code. The remaining 442 carry neither. We then checked the boundary against the location column and it is not approximate: the 442 rows with no description and no date code are precisely the 442 held at one location, and the 683 with both are the 624 held at the other plus the 59 held at both.
That is a cleaner split than we expected when we first measured it in early October, and it has a practical consequence. A date code is published for 683 part numbers and withheld for 442, and the reason is which system the row came from, not whether traceability exists. Ask for the date code on any of the 442 and we will go and read it off the label; it is not in the file.
The date code column itself is three notations in one field. We counted 104 distinct values across those 683 rows: 420 cells contain an Excel datetime, 257 contain a YY+WW style code, and 190 contain a Chinese week, month or year marker. Those sets overlap, because a single cell can hold two codes for two lots of the same part. No tool will range-filter that column without cleaning it first.
Does the internal description column agree with Walsin’s catalogue?
Yes, on every row we could test. This is the check we most expected to fail. We took the 582 codes that have both an internal description and a matching export row, parsed the rated voltage out of the description text on the 562 where it appears, and compared it to Walsin’s Rated Voltage column: zero disagreements. We did the same for dielectric on all 582: zero disagreements. The shorthand is terse and 24 descriptions carry Chinese grade markers, but it is not wrong.
| Catalogue code | Snapshot description | Walsin export row | Match / mismatch |
|---|---|---|---|
0201B101K160 |
0201 100P 101K 16V X7R | 0201, X7R, 100 pF, ±10%, 16 Vdc | Match on size, value, voltage and dielectric |
0402B102K500 |
0402 102K 50V X7R | 0402, X7R, 1000 pF, ±10%, 50 Vdc | Match on all four fields |
0603B102K500 |
0603 102K 50V X7R | 0603, X7R, 1000 pF, ±10%, 50 Vdc | Match; mismatch against 0402B102K500 on footprint only |
0805B102K251 |
0805 102K 250V X7R | 0805, X7R, 1000 pF, ±10%, 250 Vdc | Match; mismatch — Middle to High Voltage series, not General Purpose |
1206B102K202 |
no description in the file | 1206, X7R, 1000 pF, ±10%, 2000 Vdc | Mismatch — same 1000 pF ±10% value, 2,000 Vdc, and no date code published |
1812B122K202 |
1812 122K 2KV X7R | 1812, X7R, 1200 pF, ±10%, 2000 Vdc | Match; mismatch — different capacitance, same voltage class |
That table is the whole method in miniature. Five codes carry the same 1000 pF ±10% X7R specification at four different voltages and four different footprints, and only the export row tells you which is which. We will not tell you a part is equivalent. We will show you where it differs.
How should a German buyer read a 30-week lead time against a dated list?
As a reason to shortlist early, not as a reason to panic. The trade press reported MLCC lead times of 26 to 32 weeks through 2026 on high-end and automotive series, as AI server and EV build-outs pulled on capacity that consumer electronics used to have to itself. Against that, a list of 864 MLCC codes that were on a Hong Kong shelf on 23 September 2026 is useful for one specific job: proving a second source exists before the first one becomes urgent.
Three things a German buyer should do with this file, in order:
- Cross the BOM, do not search the stock list. Paste up to 500 part numbers or drop an Excel or CSV into the free cross-reference tool. It matches against Walsin’s published catalogue, shows every difference from your original field by field, and has a grade filter that lists the commercial part first with the AEC-Q200 version beneath where one exists.
- Then intersect the result with the dated shelf on ready stock. 764 codes you can check against an export row is a small enough list to read in an afternoon.
- Ask for the date code and the certificate of conformity for the exact code. We provide lot and date-code traceability and a certificate of conformity per shipment on request, in original sealed Walsin packaging. For 442 of the 1,125 codes the date code is not in the file and has to be read off the label.
Note one thing that bites German engineers specifically: Walsin’s MLCC export carries no metric case code on any of its 24,026 rows, while all 234,815 chip resistor rows do. If your drawings are in metric, see metric case sizes: Walsin 0603 means two parts before you match anything by case size.
Which of the 1,125 codes will not paste straight into your ERP?
865 of them, and for one reason. We compared the snapshot’s order code against its catalogue code row by row: 865 of the 1,125 differ, and in every one of those 865 cases the difference is a trailing CT. 0805B102K251 is the catalogue key; 0805B102K251CT is what goes on the purchase order. The remaining 260 codes are identical in both columns — the chip resistor codes such as WR06X1004FTL among them.
So if you load the catalogue column into your ERP you will raise purchase orders against codes Walsin’s order desk does not use, and if you load the order column you will fail to join to the parametric data. Both halves are needed, which is why the file publishes both. The full story on that suffix is in the Walsin CT suffix and orderable part numbers, and the whole shelf is broken down in what 1,125 ready-stock part numbers covers. The range itself is on the Walsin MLCC page.
The short version
MLCC ex stock means a part number sat on a shelf on 23 September 2026 and nothing more. The file holds 1,125 part numbers: 864 MLCC, 254 chip resistor, 7 everything else. 764 join to a Walsin export row, 555 of those are 0201 to 0805, 490 are General Purpose and 149 are Middle to High Voltage. It is two registers — the 683 rows with a description are exactly the 683 with a date code, and the seam follows the holding location exactly. The internal shorthand agreed with Walsin’s catalogue on all 582 testable rows. 865 of 1,125 order codes carry a CT the catalogue key does not. Qualification stays with you.
Send us the MLCC lines off your BOM and we will cross them against Walsin’s catalogue field by field, then tell you which candidates were on the Hong Kong shelf on 23 September 2026 and which have a published date code. And if your ERP has ever rejected a Walsin code for a trailing CT, tell us — we would like to know how many systems do it.
Frequently asked questions
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What does ex stock mean on the Venatech MLCC list?
It means the part number was held on a Hong Kong shelf on 23 September 2026, the date printed in row 2 of the stock file. It is a dated snapshot, not a live feed and not a reservation. We quote part-number counts rather than piece counts, and availability is confirmed against an enquiry rather than against the page.
How many MLCC part numbers are actually on the shelf?
864 of the 1,125 codes carry an MLCC product-line label — 732 plain MLCC plus 132 specialty. Of the full 1,125, we matched 764 to a unique row in 00_ALL_MLCC_parts_combined.xlsx. The remainder are chip resistor, safety capacitor, inductor, resistor array and one unlabelled code.
What case sizes dominate the ready-stock MLCC shelf?
0603 with 155 codes, 0402 with 152, 0805 with 149, 1206 with 102 and 0201 with 99. That is 555 of 764, or 72.6%, between 0201 and 0805. The large cases are thin: 15 codes at 1808, 3 at 2220 and a single code at 2211.
Why do only some rows have a date code?
Because the file is two registers concatenated. 683 rows carry both a description and a date code; the other 442 carry neither, and the boundary follows the internal holding location exactly. Traceability exists for all of them — for those 442 the code has to be read off the label rather than looked up in the file.
Are MLCC lead times really 26 to 32 weeks?
That figure is reported by the trade press for high-end and automotive series through 2026, driven by AI server and EV demand on shared capacity. Confirm current lead times with your own distributor, because they move monthly. We will never tell you a specific part is unobtainable, and we do not publish prices or price movements.
Why does the order code differ from the catalogue code?
A trailing CT, on 865 of the 1,125 rows. The catalogue code is the key that joins to Walsin’s parametric export; the order code is what the order desk uses. Load the wrong one and either your purchase order or your data join will fail. The other 260 codes are identical in both columns.
What should a German manufacturer send us to get a useful answer?
The BOM lines you are worried about, with the tolerance, voltage and case size your drawing actually requires. We will cross them against Walsin’s catalogue, state every difference rather than hiding it, and tell you which candidates were on the Hong Kong shelf on the snapshot date.