For Polish automotive boards that need an anti-sulfur chip resistor at 0.1 percent, Stackpole’s AEC-Q200 qualified RMCA series offers it. Walsin’s 23,530 automotive-named anti-sulfur part numbers carry only plus or minus 1 or 5 percent; its 0.1 and 0.5 percent anti-sulfur parts sit in a series not named automotive.
Venatech Limited, an authorised Walsin distributor in Hong Kong, wrote this for a design or sourcing engineer at a Polish automotive electronics or contract manufacturer who is checking a second source for a sulfur-resistant chip resistor. Walsin Technology (Walsin) is the only line we are authorised for; Stackpole Electronics (SEI) is a line we supply. The Walsin side is our own chip resistor export, 234,815 rows and 234,401 distinct part numbers, re-measured on 10 November 2026. The Stackpole side is its RMCA datasheet, fetched the same day.
What do the Polish production figures say about vehicles in 2026?
That passenger cars are down while commercial vehicles are up. According to the Polish Automotive Industry Association (PZPM) and the national statistics office, Poland produced 193,951 passenger cars from January to September 2026, down 14.9 percent, and 240,686 commercial vehicles and road tractors, up 3.7 percent.
We read the PZPM September 2026 table on 10 November 2026; the tables are listed as published on 25 October 2026. The same source gives 4,829 buses, up 5.1 percent, and a fall in engine output of 7.5 percent. The figures are theirs, not ours. A mixed year is still a year of building electronics at scale, and under-hood and chassis boards are where sulfur-bearing environments are a standing design question. We say nothing about what any Polish plant buys.
What does Stackpole’s RMCA datasheet state?
An automotive, anti-sulfur thick film series. Stackpole’s RMCA datasheet, read on 10 November 2026, lists thick film chip resistors from 0201 to 2512, with tolerances of 0.1, 0.5, 1 and 5 percent, resistance from roughly 0.01 ohm to 30 megohm, operating temperature from minus 55 to plus 155 degrees Celsius, AEC-Q200 qualification and an inner termination designed to resist sulfur contamination.
The datasheet has three power grades at 70 degrees Celsius. The standard grade runs from 0.05 W at 0201 to 1 W at 2512, the -HP grade from 0.1 W at 0402 to 2 W at 2512, and the -UP grade from 0.2 W at 0402 to 3 W at 2512. TCR runs from roughly plus or minus 100 to 1800 ppm depending on size and value, and terminations are 100 percent matte tin over nickel.
Where does Walsin’s automotive anti-sulfur shelf stop?
At 1 percent tolerance and 1 W at 2512. We counted 23,530 distinct Walsin part numbers in the two automotive anti-sulfuration series: tolerances are plus or minus 1 percent on 19,405, 5 percent on 4,105 and jumper on 20, none tighter, and the highest rating is 1 W, at 2512 only.
The tighter parts exist, but elsewhere. Walsin’s High Precision Anti-Sulfuration series has 5,710 part numbers, 2,855 at 0.1 percent and 2,855 at 0.5 percent, from 0402 to 1210 and 10 ohm upward; none of its series names is automotive. So a Polish buyer who needs both 0.1 percent and an automotive grade finds the two features in different Walsin series. Whether the second series is available in an automotive-qualified version is a question for Walsin, in writing, for your exact part number. Our post on what AEC-Q200 actually certifies explains why the wording matters.
How do the nearest Walsin parts compare with RMCA, field by field?
Power and size line up in places; tolerance does not. The comparison below sets Stackpole’s published RMCA grades against the highest-rated Walsin automotive anti-sulfur part at each size, and against the 0.1 percent Walsin part from the precision series.
The last column is for your incumbent.
| Size | Stackpole RMCA (datasheet) | Walsin automotive anti-sulfur (export) | Walsin part | Match / mismatch | Your incumbent |
|---|---|---|---|---|---|
| 0201 | 0.05 W standard | 1/20 W, plus or minus 1 or 5% | WR02W1R00FALV |
Match on power; mismatch on 0.1 and 0.5% tolerance, which RMCA lists | |
| 0402 | 0.1 W (-HP), 0.2 W (-UP) | 1/10 W, plus or minus 1 or 5% | SR04W1R00FTL |
Match on power against -HP; mismatch against -UP and on tolerance | |
| 2512 | 1 W standard, 2 W (-HP), 3 W (-UP) | 1 W, plus or minus 1 or 5% | SR25W1R00FTL |
Match against the standard grade; mismatch against -HP and -UP | |
| 0603 | 0.1% tolerance listed | 0.1%, anti-sulfur, but not an automotive-named series | SF06H10R0BTL |
Match on tolerance and sulfur construction; mismatch on automotive grade |
A match in the table is a match on the export fields, no more. Compare TCR, voltage, termination and the qualification statement too, and qualify in your own circuit. For the method of reading rated power against a footprint, see chip resistor power rating by case size.
What does the Hong Kong shelf hold in anti-sulfur and automotive resistors?
No anti-sulfur lines, and five automotive-named ones. We read the stock list as at 23 September 2026: of its 254 chip resistor lines, 0 are in an anti-sulfuration series, and 5 are in automotive-named series: MF12E1R00FTL, MF12E2200FTL, MF12E3300FTL and MF12E3902FTL (surge) and MF12P3303FTL (high power), all 1206.
The ready stock list is a dated snapshot, never live-synced. Ask through the site for current availability and for a to-order enquiry.
How can Venatech help a Polish automotive electronics team?
How Venatech helps starts with a free paste box. The cross-reference tool, VenaMatch, decodes 18 manufacturers’ part numbers and covers 800,000+ crossable parts. Paste up to 500 part numbers, or an Excel or CSV file, and each Walsin candidate returns with every field marked match or mismatch; there is a grade filter for commercial or automotive. Upload a BOM for a full review, and see the chip resistor range.
Worked example from our own export: a 0.1 percent, 0603, anti-sulfur, automotive resistor returned zero Walsin part numbers in an automotive-named series; the 0.1 percent anti-sulfur parts are in a different series. We would rather say that than show a list that fails. We hold no office, entity or stock in Poland; we serve from Hong Kong in small lots, and you request a quote through the site. We hold no ISO 9001 or IATF 16949 certificate and give no legal, customs or conformity advice. Qualification stays with you.
The short version
- Stackpole RMCA lists 0.1 percent tolerance, anti-sulfur construction and AEC-Q200 qualification, per its datasheet read 10 November 2026.
- Walsin’s 23,530 automotive anti-sulfur part numbers stop at plus or minus 1 percent and 1 W at 2512.
- Walsin’s 0.1 and 0.5 percent anti-sulfur parts (5,710) are in a series not named automotive.
- None of these series is on our 23 September 2026 shelf.
Paste your anti-sulfur resistor list into the free cross-reference tool and read each field as match or mismatch. Qualification stays with you.
Frequently asked questions
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How many passenger cars did Poland produce from January to September 2026?
193,951, down 14.9 percent on 2025, according to the PZPM and national statistics table fetched on 10 November 2026. Commercial vehicles and road tractors were 240,686, up 3.7 percent. These are their figures, not ours.
What does Stackpole RMCA offer?
A thick film anti-sulfur series from 0201 to 2512 with 0.1, 0.5, 1 and 5 percent tolerance, AEC-Q200 qualification and three power grades up to 3 W at 2512, per its datasheet read on 10 November 2026. Confirm against the current datasheet.
Does Walsin have an automotive anti-sulfur resistor at 0.1 percent?
Not in an automotive-named series in our export. Those 23,530 part numbers are plus or minus 1 or 5 percent. The 0.1 percent anti-sulfur parts are in the High Precision Anti-Sulfuration series, such as SF06H10R0BTL. Ask Walsin about grade.
What is the highest power in Walsin’s automotive anti-sulfur series?
1 W, at 2512 only, for example SR25W1R00FTL. Stackpole RMCA lists 2 W and 3 W grades at 2512, which have no match in those Walsin series. Confirm both datasheets for your exact part number.
Is Stackpole an authorised Venatech line?
No. Venatech is authorised for Walsin only. Stackpole is a line we supply. We give no price, lead time or stock guarantee, and the ready stock list is a snapshot dated 23 September 2026.
Do you hold stock or an office in Poland?
No. We hold no office, entity or stock in Poland; our locations are Hong Kong, Shenzhen, Singapore and Jiangmen. We give no legal, customs or conformity advice; confirm with your compliance team.
Related reading
- What AEC-Q200 actually certifies
- Chip resistor power rating by case size
- Cross-referencing chip resistors to Walsin
- Free cross-reference tool and ready stock
Last reviewed 10 Nov 2026. Sources: PZPM and GUS motor vehicle production table, September 2026 (pzpm.org.pl, fetched 10 Nov 2026); Stackpole Electronics RMCA datasheet (seielect.com, fetched 10 Nov 2026); Venatech Walsin chip resistor export and stock list as at 23 September 2026, re-measured 10 Nov 2026.