For defence boards built in Finland, an anti-sulfur chip resistor is often one letter away from what is already on the BOM: 232 of the 249 stocked Walsin Technology (Walsin) chip resistor lines we matched to the export have an anti-sulfur twin that is the same code plus V, and 229 of those match TCR and rated power.
Venatech Limited, an authorised Walsin distributor in Hong Kong, wrote this from the Walsin chip resistor exports (137 .xlsx files, 234,815 rows, 234,401 distinct part numbers, re-counted by us on 11 November 2026) and our stock list as at 23 September 2026, which holds 254 chip resistor lines, 249 of them found in the exports. It is for an engineer or buyer at a Finnish EMS or defence product company. Every part number is real. The news item names its source and the date we fetched it.
What did NOTE announce for its Finnish factory?
A move into the Finnish defence industry association, backed by a larger factory. Evertiq reported on 5 November 2026 that NOTE’s Finnish subsidiary will join PIA, the Finnish defence and aerospace industry association, from 1 January 2027, and that its new Hyvinkää factory has about twice the production floor space of the previous one.
According to the same report, the Hyvinkää investment is the group’s largest in Finland since 2005 and covers new SMD assembly lines, reflow ovens, X-ray and AOI inspection, cleaning and coating equipment and traceability systems. It names industrial customers as the largest segment and security and defence as a long-term strategic market. Those are the report’s statements, not ours; we have no relationship with NOTE and say nothing about its customers or purchasing.
Why does an anti-sulfur chip resistor matter on a defence board?
Because the silver in a standard thick-film termination can react with sulfur in the air and, over years, open the resistor. Defence equipment is often specified for long service in vehicles, shelters and industrial sites, where sulfur-bearing atmospheres are a known field-failure mechanism; Walsin lists 41,147 distinct anti-sulfuration chip resistor part numbers for that reason.
Conformal coating, which Hyvinkää’s new line includes, slows the exposure, and whether it is enough on its own is a question for your qualification plan, not for us. An anti-sulfur part removes the question at the component level. Our post on the AEC-Q200 split in Walsin automotive chip resistors covers the series around these parts, and tolerance, TCR and dielectric codes decoded covers the fields we compare below.
How many Walsin anti-sulfur chip resistors exist, and how many are on the shelf?
41,147 in the catalogue, none on the shelf. We counted every row whose series name carries anti-sulfuration: 38,375 discrete parts in four series and 2,772 in four array series, across 0201 to 2512, and 0 of them is on our shelf as at 23 September 2026.
| Walsin anti-sulfur series | Distinct parts | Tolerances in export |
|---|---|---|
| Thick Film High Grade Anti-Sulfuration Chip Resistor (Automotive) | 12,871 | 1%, 5%, jumper |
| Thick Film General Purpose Anti-Sulfuration Chip-Resistor (Automotive) | 10,659 | 1%, 5%, jumper |
| Thick Film High Power Chip Resistor (Anti-Sulfuration) | 9,135 | 1%, 5%, jumper |
| High Precision Anti-Sulfuration Chip Resistor | 5,710 | 0.1%, 0.5% |
| Anti-Sulfuration resistor arrays, four series | 2,772 | 1%, 5%, jumper |
The precision series is the only anti-sulfur route to 0.1 or 0.5 percent. The three automotive-labelled series carry that label in the export; request the AEC-Q200 report for the exact part number before you cite it.
Which stocked Walsin resistors have an anti-sulfur twin, and what differs?
Nearly all of them. We matched each of the 249 stocked lines to the discrete anti-sulfur series on size, resistance and tolerance: 246 have a twin, 235 also match TCR and rated power, and for 232 the twin is the stocked code with a trailing V, such as WR06X1002FTL and WR06X1002FTLV.
| Stocked Walsin part | Anti-sulfur twin | Size / value | Twin series | Match / mismatch | Your incumbent |
|---|---|---|---|---|---|
WR06X1002FTL |
WR06X1002FTLV |
0603, 10 kilohm, 1% | General Purpose Anti-Sulfuration (Automotive) | Match on size, value, tolerance, TCR and power | |
WR12X1001FTL |
WR12X1001FTLV |
1206, 1 kilohm, 1% | General Purpose Anti-Sulfuration (Automotive) | Match on all five | |
WR06X4701FTL |
SR06X4701FTL |
0603, 4.7 kilohm, 1% | High Grade Anti-Sulfuration (Automotive) | Match on all five; different prefix | |
WF12H1202BTL |
SF12H1202BTL |
1206, 12 kilohm, 0.1% | High Precision Anti-Sulfuration | Match on all five | |
WR04W1504FTL |
WR04W1504FTLV |
0402, 1.5 megohm, 1% | General Purpose Anti-Sulfuration (Automotive) | Mismatch on TCR: 100 ppm becomes 200 ppm | |
MF12E2200FTL |
SR12X2200FTL |
1206, 220 ohm, 1% | High Grade Anti-Sulfuration (Automotive) | Mismatch on power: 3/4 W becomes 1/4 W |
None of the twins is on our shelf. A match is a match on export fields only. Confirm against both datasheets and qualify in your own circuit. We have not seen this one-letter relationship counted anywhere else.
Where does the one-letter swap not hold?
In 14 of the 249 lines, by our count. We checked every stocked line: three have no anti-sulfur twin at all, the 0805 current-sense parts WW08WR270FTL, WW08WR390FTL and WW08WR470FTL, and eleven have a twin that differs in TCR or power, including three V twins that raise TCR from 100 to 200 ppm.
The eleven partial twins are the three 0402 high-value lines at 1.5, 2.7 and 3.3 megohm, four 1206 anti-surge lines at 3/4 W whose nearest anti-sulfur part is 1/4 W, two 0402 precision lines at 1/16 W whose twin is rated 1/10 W, and two 0603 5 percent lines at 200 ppm whose twins differ in TCR or power. Of our 28 Walsin datasheets, 2 cover chip resistors, the MR and WR families; none covers the anti-sulfuration series, so request that sheet before design-in.
How can Venatech help a Finnish defence EMS team?
How Venatech helps: paste the 249-line kind of list you already run, and every anti-sulfur twin is one search away. The cross-reference tool, VenaMatch, decodes 18 manufacturers’ part numbers across 800,000+ crossable parts, accepts up to 500 part numbers or an Excel or CSV file, filters by commercial or automotive grade, and states every difference from your original.
Upload a defence or industrial BOM at BOM upload to request a quote. The ready-stock list is a Hong Kong snapshot dated 23 September 2026 with no anti-sulfur line on it; the chip resistor range lists the families. Walsin is the only line we are authorised for; Stackpole and Viking are lines we supply. We serve from Hong Kong in small lots, with lot and date-code traceability, give no price, lead time or stock guarantee, hold no office or stock in Finland, and give no export-control or compliance advice: confirm with your compliance team.
The short version
NOTE’s move into Finland’s defence association from a doubled Hyvinkää factory is a reminder that defence boards live long in harsh air. Walsin lists 41,147 anti-sulfur chip resistors; 232 of our 249 stocked lines have one that is the same code plus V, 229 with the same TCR and power. Check the 14 lines where the swap changes something or does not exist.
Send us your resistor list and we will return the anti-sulfur twin for every line with each difference stated. Which matters more on your board: the TCR or the footprint?
Sources
Fetched 11 November 2026.
- Evertiq, “Note Finland joins Finnish defence industry association”, 5 November 2026: https://evertiq.com/news/2026-11-05-note-finland-joins-finnish-defence-industry-association
Related reading
- Walsin automotive chip resistors: MR, SR and the AEC-Q200 split
- Tolerance, TCR and dielectric codes decoded
- Anti-surge chip resistors
- Free tools: VenaMatch cross reference and the ready stock list
Last reviewed 11 Nov 2026.
Frequently asked questions
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What did NOTE announce for Finland in November 2026?
Evertiq reported on 5 November 2026 that NOTE’s Finnish subsidiary joins PIA, the Finnish defence and aerospace industry association, from 1 January 2027, and that its new Hyvinkää factory has about twice the floor space of the previous one.
How many Walsin anti-sulfur chip resistors are there?
We counted 41,147 distinct part numbers whose series name carries anti-sulfuration: 38,375 discrete parts in four series and 2,772 in four array series, from 0201 to 2512. None is on our Hong Kong shelf as at 23 September 2026.
Is there an anti-sulfur version of a standard Walsin WR chip resistor?
Usually. For 232 of our 249 stocked chip resistor lines, the anti-sulfur twin is the same code plus a trailing V, such as WR06X1002FTLV. 229 of those match TCR and rated power. Confirm on the datasheet.
Does Walsin offer a 0.1 percent anti-sulfur chip resistor?
Yes. The High Precision Anti-Sulfuration series lists 5,710 parts at 0.1 or 0.5 percent, for example SF12H1202BTL at 12 kilohm in 1206. It is the only anti-sulfur series in the export below 1 percent.
Does conformal coating replace an anti-sulfur chip resistor?
We do not answer that for your product. Coating slows exposure; an anti-sulfur part addresses the termination itself. Which your qualification relies on is for your design and reliability team to decide.
Do you hold stock in Finland or give export-control advice?
No. Our locations are Hong Kong, Shenzhen, Singapore and Jiangmen, with Chengdu in preparation. We give no legal, customs, export-control or compliance advice and no price, lead time or stock guarantee. Confirm with your compliance team.