Data centre electronics for Malaysia rely on small decoupling capacitors, and the Walsin Technology (Walsin) 1 microfarad X7R 0603 line has 28 part numbers on 6 voltage rungs, 3 on our shelf. Knight Frank reported on 31 July 2026 a Johor pipeline of 8,542 MW against 1,110 MW of live IT capacity.
Venatech Limited, an authorised Walsin distributor in Hong Kong, wrote this for a design or sourcing engineer at a Malaysian maker or assembler of server boards, switches or power modules who is crossing a 1 microfarad decoupling capacitor. The market statement names its source and the day we fetched it, 10 November 2026. The counts come from the Walsin MLCC export (24,026 rows, 23,601 distinct part numbers) and our stock list as at 23 September 2026. We do not know your rail voltages. Every part number is real.
What did Knight Frank report about Johor’s data centre pipeline?
It reported a pipeline many times larger than live capacity. According to Knight Frank’s Data Centre Atlas 2026, relayed by EdgeProp on 31 July 2026, Johor had an incoming pipeline of 8,542 MW against 1,110 MW of live IT capacity, and disclosed first-half 2026 data centre transactions of 1 billion ringgit over 163.6 acres.
These are the consultancy’s figures, not ours, and a pipeline is a plan, not a delivery. The conclusion we draw is narrow: every megawatt of IT load is carried on boards that use hundreds of small ceramic capacitors, and 1 microfarad at 0603 is among the most common values. We have no relationship with any Johor operator and say nothing about what any of them buys.
Which Walsin 1 microfarad X7R 0603 parts match a 25 V, plus or minus 10 percent brief?
One exact part and five near ones. We filtered the Walsin MLCC export for X7R, 0603, 1 microfarad, 25 V and found 6 distinct part numbers in 3 series: 3 General Purpose, 2 Soft Termination (SH) and 1 Automotive MG; exactly 1 matches plus or minus 10 percent in the General Purpose series.
The last column is for your incumbent.
| Walsin part | Description | On shelf 23 Sep 2026 | Match / mismatch with a 1 uF, 25 V, 0603 brief | Your incumbent |
|---|---|---|---|---|
0603B105K250 |
General Purpose, X7R, 0603, 1 uF, plus or minus 10 percent, 25 V, 0.80 mm | Yes | Match on size, dielectric, value, tolerance and voltage | |
0603B105M250 |
General Purpose, X7R, 0603, 1 uF, plus or minus 20 percent, 25 V | No | Mismatch: tolerance is plus or minus 20 percent, wider | |
0603B105J250 |
General Purpose, X7R, 0603, 1 uF, plus or minus 5 percent, 25 V | No | Mismatch: tolerance is plus or minus 5 percent, tighter | |
SH18B105K250 |
Soft Termination (SH), X7R, 0603, 1 uF, plus or minus 10 percent, 25 V | No | Match on the electrical fields; mismatch: termination is soft (Ag-poly) | |
SH18B105M250 |
Soft Termination (SH), X7R, 0603, 1 uF, plus or minus 20 percent, 25 V | No | Mismatch: soft termination and tolerance plus or minus 20 percent | |
MG18B105K250 |
Automotive MG (without AEC-Q200 certification), X7R, 0603, 1 uF, 25 V | No | Match on size and voltage; the export Tolerance cell reads -0.1, not a percentage |
A match in the table is a match on export fields, no more. The MG row is a known export quirk: its Tolerance column holds a bare negative decimal, which we explain in AEC-Q200 MLCC, MT versus MG series. Confirm against both datasheets and qualify in your own circuit.
How many voltage rungs does the 1 microfarad X7R 0603 line have?
Six, and they are uneven. We counted 28 distinct Walsin part numbers at 1 microfarad, X7R, 0603: 2 at 6.3 V, 4 at 10 V, 8 at 16 V, 6 at 25 V, 3 at 35 V and 5 at 50 V.
The 16 V rung is the fullest because the Automotive MT series (3 parts) and Soft Termination SH series (2 parts) sit there beside 3 General Purpose tolerances. At 35 V only the General Purpose plus or minus 5, 10 and 20 percent parts exist. A board that moves from a 25 V to a 50 V rating for margin changes the part number, the supply path and possibly the height, so the swap is a design decision, not a substitution. See how to read a Walsin MLCC part number for the voltage code.
What does the Hong Kong shelf hold on this ladder?
Three part numbers, one on each of three rungs. Our stock list as at 23 September 2026 holds 0603B105K100 at 10 V, 0603B105K160 at 16 V and 0603B105K250 at 25 V, all General Purpose plus or minus 10 percent, and none of the other 25 part numbers on the ladder.
The ready stock list is a dated snapshot, never live-synced, and it counts part numbers, not pieces. The 6.3 V, 35 V and 50 V rungs are not stocked, and neither are the tighter or looser tolerance letters. The MLCC range lists the families; ask for a to-order enquiry through the site if your rung is missing.
What will we not tell you about Malaysian data centres?
Anything about your board, your thermal design or your reliability target. We hold 28 Walsin datasheets, 26 of them MLCC, and none names a data centre, so every count here is catalogue coverage, not suitability.
We make no claim that any part suits a server rail. We hold no ISO 9001 or IATF 16949 certificate and make no qualification claim of our own. We hold no office, entity or stock in Malaysia; our locations are Hong Kong, Shenzhen, Singapore and Jiangmen, with Chengdu in preparation. We give no legal, customs or investment advice; confirm with your compliance team. Qualification stays with you.
How can Venatech help a Malaysian server-board buyer?
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; it accepts up to 500 part numbers or an Excel or CSV file and marks every field match or mismatch. Load a whole BOM for a check. The ready-stock list is a Hong Kong snapshot dated 23 September 2026.
Worked example from our own export: the 1 microfarad, X7R, 0603, 25 V brief returned 6 part numbers in 3 series, 1 an exact match and on the shelf. Venatech Limited is authorised for Walsin only; Stackpole and Viking are lines we supply. We serve from Hong Kong, welcome small lots, and you request a quote through the site.
The short version
Knight Frank counted 8,542 MW in the Johor data centre pipeline against 1,110 MW live. For the board, the Walsin 1 microfarad X7R 0603 line has 28 part numbers on 6 voltage rungs, the 25 V rung has 6, and our shelf holds 3 part numbers, one at each of 10 V, 16 V and 25 V.
Send us one 1 microfarad line from your server-board BOM, with the voltage, tolerance and termination you accept, and we will return the Walsin parts with every difference stated. If you raised the rating for margin, did you change the rung or only the label?
Sources
Fetched 10 November 2026. – EdgeProp Malaysia, Johor leads Asia-Pacific data centre pipeline, Klang Valley sees 1H2026 investment rebound, says Knight Frank, 31 July 2026: https://www.edgeprop.my/content/1916967/johor-leads-asia-pacific-data-centre-pipeline-klang-valley-sees-1h2026-investment-rebound-says-knight-frank – Walsin MLCC and chip resistor exports and the Venatech ready-stock workbook (.xlsx) as at 23 September 2026, re-measured 10 November 2026 (internal files).
Related reading
- How to read a Walsin MLCC part number
- AEC-Q200 MLCC, MT versus MG series
- 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
What did Knight Frank report about Johor data centres?
Knight Frank’s Data Centre Atlas 2026, relayed by EdgeProp on 31 July 2026, put Johor’s incoming pipeline at 8,542 MW against 1,110 MW of live IT capacity. These are the consultancy’s figures; check the report before quoting.
How many Walsin 1 microfarad X7R 0603 parts are there?
We counted 28 distinct part numbers on six voltage rungs from 6.3 V to 50 V, across General Purpose, Automotive MT, Automotive MG and Soft Termination SH series. Tolerance and termination differ between them, so state both in your brief.
Which part matches a 25 V, plus or minus 10 percent, 0603 brief?
0603B105K250 matches on every export field, and it is on our shelf. SH18B105K250 matches the electrical fields but has a soft termination. Confirm height and bias behaviour against the datasheet and qualify in your own circuit.
Why does the MG row show -0.1 as its tolerance?
The export stores the Tolerance of MG series rows as a negative decimal instead of a percentage, so MG18B105K250 reads -0.1. Treat it as a data-entry quirk and confirm the tolerance against the datasheet and the part number letter.
Which parts are on the Hong Kong shelf?
As at 23 September 2026: 0603B105K100, 0603B105K160 and 0603B105K250, all General Purpose plus or minus 10 percent. The snapshot is dated, not live, so ask us through the site for current availability.
Do you hold stock or an office in Malaysia?
No. We hold no office, entity or stock in Malaysia; our locations are Hong Kong, Shenzhen, Singapore and Jiangmen. We hold no ISO 9001 or IATF 16949 certificate and give no legal or customs advice. Confirm with your compliance team.