A resistor array line can break an EMS BOM in Batam before anyone reads a datasheet. We parsed Walsin’s 10,022 array part numbers: every one of the 2,265 at 5 percent contains a space. Our shelf array, written WA04X300JTL, is the export’s WA04X300 JTL, a 30 ohm part, while WA04X3000FTL is 300 ohm.
Venatech Limited, an authorised Walsin distributor in Hong Kong, wrote this for a sourcing, NPI or design engineer at an EMS or contract electronics maker in Batam, Indonesia, loading a customer BOM that calls for chip resistor arrays. Walsin Technology (Walsin) is the only line we are authorised for. We re-measured Walsin’s chip resistor export, 234,815 rows and 234,401 distinct part numbers, on 11 November 2026, including the array files Thick_Film_Chip_Resistor_Array__1of1.xlsx and Thick_Film_Chip_Resistor_Array_Anti_Sulfuration__1of1.xlsx, and checked it against our stock list as at 23 September 2026. Every part number below is real.
What is happening in Batam’s electronics manufacturing this autumn?
New capacity, and fast hiring. The Star, carrying a Jakarta Post report, said on 28 October 2026 that two US companies broke ground on a 500 million US dollar semiconductor project at the Wiraraja I estate in Kabil, Batam, on three hectares, with 1,000 jobs projected and sodium-ion battery assembly in the plan.
On 6 August 2026 The Star carried a Bloomberg report that Batam’s exports more than doubled since 2017 to about 19.6 billion US dollars in 2025, and that Luxshare Precision had hired at least 2,000 local workers at a new electronics plant in the Tunas Prima estate, citing people familiar with the matter. We fetched both on 11 November 2026; the figures are theirs. Our conclusion is ours: a contract line that takes on new customers inherits their BOM habits, and resistor arrays are where a part number most often fails to load. We have no relationship with any company named.
Why would a Walsin resistor array part number fail to paste into an EMS system?
Because of a space. We split the 10,022 array part numbers in Thick_Film_Chip_Resistor_Array__1of1.xlsx and its anti-sulfuration companion by tolerance: all 2,265 at plus or minus 5 percent contain an embedded space, as do 16 jumpers; none of the 1 percent codes does.
A 5 percent code such as WA04X300 JTL is written with a space between the three-digit value and the tolerance letter. Many ERP and pick-and-place libraries strip spaces on import, so the code arrives as WA04X300JTL, which is how our own stock list writes it. Across the whole chip resistor export, 39,576 part numbers carry a space; that is already in our post on why Walsin part numbers do not paste into your BOM. The array cut, 2,265 of 2,265 at 5 percent, is our count, and we have not seen it stated anywhere.
Is WA04X300JTL a 300 ohm or a 30 ohm resistor array?
30 ohm. We matched our one shelf array line on our stock list as at 23 September 2026, WA04X300JTL, to the export: it is WA04X300 JTL, a 0402, four-element convex array at 30 ohm, plus or minus 5 percent, 200 ppm, 1/16 W; the 300 ohm array is WA04X3000FTL, at 1 percent.
The value code changes length with the tolerance: three digits on 5 percent parts, four on 1 percent parts. Read 300 on a 5 percent part as 30 followed by no zeros, and 3000 on a 1 percent part as 300 followed by no zeros. With the space stripped, the two codes differ by one character and a factor of ten. A BOM check that compares strings without decoding them will not catch it.
| Code as it may appear in a BOM | Export part number | Value | Tolerance | Elements and size | Match / mismatch with a 300 ohm brief |
|---|---|---|---|---|---|
WA04X300JTL (space stripped) |
WA04X300 JTL |
30 ohm | 5% | 4 x 0402, convex | Mismatch: one tenth of the value |
WA04X3000FTL |
WA04X3000FTL |
300 ohm | 1% | 4 x 0402, convex | Match on value; tolerance tighter |
WA04X3000FTLJ |
WA04X3000FTLJ |
300 ohm | 1% | 4 x 0402, convex | Match on value; mismatch in suffix and series label |
The ready stock list is a dated snapshot, never live-synced; ask through the site for current availability.
Which Walsin resistor arrays cross a 10 kilohm, 0402, four-element brief?
Five, in five series labels. We filtered the export for 10 kilohm, 1 percent, four elements in 0402: WA04X1002FTL, WA04X1002FTLJ, WA04T1002FTL, MA04X1002FTL and SA04X1002FTL, with TCR of 200 or 300 ppm.
Put your incumbent in the last column.
| Walsin part | Series as written in the export | TCR (ppm) | Match / mismatch with the brief | Your incumbent |
|---|---|---|---|---|
WA04X1002FTL |
Array 0402*4, Convex type | 200 | Match on value, tolerance, elements, size | |
WA04X1002FTLJ |
Array 0402*4, Convex Type | 200 | Match on fields; mismatch in suffix J and series label | |
WA04T1002FTL |
Array 0402*4, Concave type | 300 | Mismatch: concave terminals, different land pattern | |
MA04X1002FTL |
Array 0402*4, Convex Type (Automotive) | 300 | Match on fields; mismatch: automotive series, wider TCR | |
SA04X1002FTL |
Anti-Sulfuration Array 0402*4, Convex Type | 300 | Match on fields; mismatch: anti-sulfuration series |
The convex series appears twice, once as Convex Type and once as Convex type; that split is in our earlier array posts, and in this cut the capital-T label holds the J-suffix parts. A two-element option is WA04Y1002FTL. Confirm the land pattern against both datasheets; see chip resistor arrays.
How Venatech helps: what should a Batam EMS buyer do with an array line?
Paste the array lines exactly as your customer wrote them. The free cross-reference tool, VenaMatch, decodes 18 manufacturers’ part numbers and covers 800,000+ crossable parts; paste up to 500 lines or drop an Excel or CSV file, and each Walsin candidate returns with every field marked match or mismatch. Upload the whole BOM for review, and see the chip resistor range.
Worked example from our own data: the shelf code WA04X300JTL decoded to a 30 ohm, 5 percent array, not the 300 ohm part one character away. We serve from Hong Kong, welcome small lots, and you request a quote through the site. We hold no office, entity or stock in Indonesia, hold no ISO 9001 or IATF 16949 certificate, and give no customs advice; confirm with your compliance team.
The short version
- All 2,265 Walsin 5 percent array codes contain a space; no 1 percent code does.
WA04X300JTLis 30 ohm at 5 percent;WA04X3000FTLis 300 ohm at 1 percent.- A 10 kilohm, 0402, four-element brief returns 5 parts in 5 series labels.
Send us the array lines from your customer’s BOM as written, and we will decode each one and return the Walsin parts with every difference stated.
Sources, fetched 11 November 2026:
- The Star (Jakarta Post via ANN), “US firms break ground on 500 million US dollar semiconductor project in Batam”, 28 October 2026: https://www.thestar.com.my/aseanplus/aseanplus-news/2026/10/28/us-firms-break-ground-on-us500-million-semiconductor-project-in-batam
- The Star (Bloomberg), “Trump trade war puts Indonesia’s Batam on global factory map”, 6 August 2026: https://www.thestar.com.my/business/business-news/2026/08/06/trump-trade-war-puts-indonesias-batam-on-global-factory-map
Frequently asked questions
Why does a Walsin resistor array code not match in our ERP?
Every Walsin 5 percent array part number, 2,265 of them, contains a space between the value and the tolerance letter. Systems that strip spaces turn WA04X300 JTL into WA04X300JTL. Search with and without the space, or paste it into our cross-reference tool.
Is WA04X300JTL 300 ohm?
No. It is the export’s WA04X300 JTL, a 0402 four-element array at 30 ohm, plus or minus 5 percent. The 300 ohm array is WA04X3000FTL at 1 percent. Five percent codes use three value digits; 1 percent codes use four.
Which Walsin arrays match 10 kilohm, 1 percent, four elements in 0402?
WA04X1002FTL, WA04X1002FTLJ, WA04T1002FTL, MA04X1002FTL and SA04X1002FTL. They differ in terminal style, series label and TCR (200 or 300 ppm). Confirm the land pattern against both datasheets.
Do you hold resistor arrays on the Hong Kong shelf?
One array line, WA04X300JTL, as at 23 September 2026. The list is a dated snapshot, not live, so ask through the site for current availability and to-order options.
What is happening in Batam’s electronics sector?
The Star reported on 28 October 2026 that two US companies broke ground on a 500 million US dollar semiconductor project in Kabil, Batam, with 1,000 jobs projected. Those are the report’s figures, not ours.
Do you have an office or stock in Indonesia?
No. We serve from Hong Kong, with locations in Hong Kong, Shenzhen, Singapore and Jiangmen. We give no customs or import advice; confirm with your compliance team.