A 47 nF, 100 V X7R capacitor has 31 part numbers in Walsin’s MLCC export, in 6 case sizes, and the smallest body that reaches it is 0603: at 100 V the 0402 X7R ceiling is 4.7 nF. None of the 31 is on our Hong Kong ready-stock list, but the 18 nF and 100 nF neighbours are.
Venatech Limited, an authorised Walsin distributor in Hong Kong, holds the Walsin Technology (Walsin) MLCC parametric export: 24,026 rows, 23,601 distinct part numbers, in 16 series. This post is for a procurement or design engineer in Sri Lanka, at an EV assembler, a battery-pack builder or a repair house, who has a 100 V capacitor line to second-source. Every Walsin part number below is real and every count is ours. Where it states a development, it names the source, the document date and the day we fetched it, 2 November 2026.
What did Sri Lanka’s March 2026 vehicle registrations show?
Electric vehicles jumped. The Daily Mirror reported on 27 April 2026 that Sri Lanka registered 59,734 vehicles in March 2026, up 15.6 percent on February, of which 8,834 were electric, up 165.1 percent from 3,332 in February.
For a buyer, that is context and nothing more. A registration count is not a component order, the article does not say which vehicle types the electric figure covers, and it names no part, battery or supplier. We draw no conclusion about which capacitors any Sri Lankan company buys. We have no relationship with the newspaper or any registry.
| Point | What the source says | Source date | Match / mismatch |
|---|---|---|---|
| Registrations | 59,734 vehicles registered in March 2026, up 15.6 percent on February | Daily Mirror, 27 April 2026 | Match for context only |
| Electric vehicles | 8,834 electric vehicles, up 165.1 percent from 3,332 in February; about 14.8 percent of the total on our arithmetic | Daily Mirror, 27 April 2026 | Mismatch with any component claim: the article does not say which vehicle types |
| Motorcycles and three-wheelers | 41,121 motorcycles, up 20.7 percent; 4,031 three-wheelers, down 0.71 percent | Daily Mirror, 27 April 2026 | Match for context; no split of electric and petrol |
| Components | The article names no part, battery or supplier | Daily Mirror, 27 April 2026 | Mismatch with any claim about passives |
How many Walsin capacitors are 47 nF, 100 V?
Thirty-one part numbers, 27 X7R and 4 NP0. We filtered all 23,600 distinct MLCC part numbers in 00_ALL_MLCC_parts_combined.xlsx for a capacitance of 47 nF and a rated voltage of 100 V and found 31, across 6 series and 6 case sizes: 0603, 0805, 1206, 1210, 1812 and 2225. We then read the stock list as at 23 September 2026 against all 31 codes and found none.
| Walsin series | Rows at 47 nF and 100 V | Case sizes | Example | Match / mismatch |
|---|---|---|---|---|
| General Purpose | 14 | 0603, 0805, 1206, 1210, 1812 | 0805B473K101 |
Match on value and voltage; confirm termination and grade against your incumbent |
| MT, AEC-Q200 compliant | 7 | 0603, 0805, 1206, 1210 | MT21B473K101 |
Match on value and voltage; confirm termination and grade against your incumbent |
| SH soft termination | 5 | 0603, 0805, 1206, 1210, 1812 | SH21B473K101 |
Match on value and voltage; confirm termination and grade against your incumbent |
| ST soft termination, AEC-Q200 compliant | 3 | 0805 | ST21B473K101 |
Match on value and voltage; confirm termination and grade against your incumbent |
| MG, automotive, no AEC-Q200 claim | 1 | 0805 | MG21B473K101 |
Match on value and voltage; confirm termination and grade against your incumbent |
| Big sizes | 1 | 2225 | 2225B473K101 |
Match on value and voltage; confirm termination and grade against your incumbent |
The grade is where an incumbent line splits. Seven of the 31 sit in the MT series, which Walsin’s datasheets describe as compliant to AEC-Q200, not certified; Venatech makes no qualification claim of its own, and our post on AEC-Q200 MLCC, MT against MG explains the two automotive series. The 4 NP0 rows are at 1206, 1210 and 1812, so a C0G-class 47 nF at 100 V is never smaller than 1206.
Why does a 47 nF line at 100 V start at 0603?
Because the 0402 X7R ceiling at 100 V is 4.7 nF. We grouped the 854 X7R rows rated 100 V by case size: 0402 has 32 rows and tops out at 4.7 nF, 0603 has 180 rows and reaches 100 nF, and 47 nF therefore needs 0603 or larger. At 50 V the same 0603 body reaches 1 uF, so the voltage step costs a factor of ten in capacitance at that size.
| Case size | X7R rows at 100 V | Highest capacitance | Match / mismatch with a 47 nF line |
|---|---|---|---|
| 0402 | 32 | 4.7 nF | Mismatch: ceiling below 47 nF |
| 0603 | 180 | 100 nF | Match: reaches 47 nF |
| 0805 | 212 | 470 nF | Match: reaches 47 nF |
| 1206 | 200 | 2.2 uF | Match: reaches 47 nF |
| 1210 | 103 | 10 uF | Match: reaches 47 nF |
| 1812 | 86 | 2.2 uF | Match: reaches 47 nF |
| 1825 | 3 | 4.7 uF | Match: reaches 47 nF |
| 2220 | 31 | 22 uF | Match: reaches 47 nF |
| 2225 | 7 | 3.3 uF | Match: reaches 47 nF |
We have not seen the 100 V ceiling counted by case size anywhere. For a pack-side filter at 48 V or above, the practical question is whether 0603 is the body you have room for; a 50 V part gives more capacitance but less margin, and that is your derating decision, not ours. Our post on DC bias and voltage derating explains why the printed value shrinks under bias.
Which worked part numbers show the match and the gaps?
Take a 47 nF, 100 V, X7R, ±10 percent, 0603 line from your bill of materials. Walsin has 0603B473K101 as the plain match, MT18B473K101 as the AEC-Q200 compliant version of it with the same thickness band, and SH18B473K101 as a soft-termination part whose thickness limit is 1.10 mm against 0.95 mm. The last two rows show the stocked neighbours.
| Walsin part | Series | Case, dielectric, tolerance | Thickness in export | Match / mismatch | Your incumbent |
|---|---|---|---|---|---|
0603B473K101 |
General Purpose | 0603, X7R, ±10% | 0.80 +0.15/-0.10 mm | Match on 47 nF, 100 V and X7R; the smallest body that reaches the value; not stocked | |
MT18B473K101 |
MT, AEC-Q200 compliant | 0603, X7R, ±10% | 0.80 +0.15/-0.10 mm | Match on the same fields; mismatch on grade: Walsin says compliant, not certified; request the qualification report for the exact number; not stocked | |
SH18B473K101 |
SH soft termination | 0603, X7R, ±10% | 0.80 ±0.30 mm | Match on value and voltage; mismatch on thickness: upper limit 1.10 mm against 0.95 mm; termination differs; not stocked | |
0805B473K101 |
General Purpose | 0805, X7R, ±10% | 1.25 ±0.10 mm | Match on value and voltage; mismatch on body: 0805 is larger than 0603; not stocked | |
0603B183K101 |
General Purpose | 0603, X7R, ±10% | 0.80 +0.15/-0.10 mm | Mismatch on value: 18 nF; shown because it is on the Hong Kong list as at 23 September 2026 | |
0603B104K101 |
General Purpose | 0603, X7R, ±10% | 0.80 +0.15/-0.10 mm | Mismatch on value: 100 nF; shown because it is on the Hong Kong list as at 23 September 2026 |
The Hong Kong list holds 36 of the 854 X7R 100 V lines, 7 of them in 0603, at 180 pF, 220 pF, 680 pF, 1.5 nF (soft termination), 10 nF, 18 nF and 100 nF. It does not hold 47 nF. Whether 18 nF or 100 nF can stand in for a 47 nF filter is a circuit question; we show the numbers and leave the call to you.
What will we not tell you about Sri Lanka?
Anything about Sri Lankan regulation, customs or vehicle approval. We hold no office, entity or stock in Sri Lanka; our locations are Hong Kong, Shenzhen, Singapore and Jiangmen, with Chengdu in preparation. We state no duty, border procedure, transit time or carrier, and we give no legal, customs or compliance advice; confirm with your compliance team.
We also say nothing about any electric vehicle, battery pack or charger design, or whether a Walsin part meets a vehicle maker’s specification. Our export contains no price, lead time or stock figure for these rows, and we publish none.
Why do buyers in Sri Lanka choose Venatech?
Because we put the difference on the page and then supply the part. Venatech Limited is an authorised Walsin distributor in Hong Kong, which you can confirm with Walsin, and the MLCC export we work from holds 23,601 distinct part numbers in 16 series, from 0201 signal parts to 2225 high-voltage bodies.
Our free cross-reference tool, VenaMatch, decodes 18 manufacturers’ part numbers and covers 800,000+ crossable parts, and prints match and mismatch fields so the gap shows before the order. We work from Hong Kong and welcome small lots, which suits a pack builder or a repair house. The 47 nF table above is the standard we keep: three grades of one capacitor, three different terminations or thickness limits, and no claim that they are the same part.
How can Venatech help a Sri Lankan EV buyer?
Start with the incumbent part number. Paste it into the free cross-reference tool, which decodes 18 manufacturers’ part numbers across 800,000+ crossable parts and lists Walsin candidates with match and mismatch fields, or upload a list to the BOM checker, up to 500 part numbers. The Hong Kong ready-stock list is a dated snapshot, 23 September 2026, never live-synced. Walsin is the only line we are authorised for; Stackpole and Viking are lines we supply. You can request a quote through the site.
A worked example from our own export: a 47 nF, 100 V, X7R, 0603 line maps to 0603B473K101 with the automotive-grade and soft-termination variants listed beside it; the same value in a C0G-class body maps to 1206N473J101. Our MLCC range lists the families. We hold neither ISO 9001 nor IATF 16949. Qualification stays with you.
The short version
For a 47 nF, 100 V line, read the body before the series. Walsin lists 31 part numbers in 6 case sizes, the smallest is 0603 because the 0402 X7R ceiling at 100 V is 4.7 nF, and none of the 31 is on the Hong Kong ready-stock list as at 23 September 2026. The stocked 0603 neighbours are 18 nF and 100 nF.
Send us one 100 V capacitor from your bill of materials and we will return the Walsin parts with every difference stated. Is 0603 the largest body your board can take?
Sources
Fetched 2 November 2026. The registration statements above come from this page; the part data comes from our own Walsin MLCC export and stock list. – Daily Mirror (Sri Lanka), “March vehicle registrations expand over 15% as EV adoption accelerates”, 27 April 2026: https://www.dailymirror.lk/print/business-main/March-vehicle-registrations-expand-over-15-as-EV-adoption-accelerates/245-338794
Frequently asked questions
How many Walsin MLCC are 47 nF at 100 V?
Thirty-one part numbers: 27 X7R and 4 NP0, in 6 series and 6 case sizes from 0603 to 2225. None is on the Hong Kong ready-stock list as at 23 September 2026. The count comes from the 23,600 distinct part numbers in the Walsin MLCC export.
What is the smallest case for 47 nF at 100 V?
0603 in X7R. The 0402 X7R ceiling at 100 V is 4.7 nF across 32 rows, and the C0G-class 47 nF rows start at 1206. A 50 V part reaches 1 uF in 0603, so the voltage step costs capacitance at that size.
Is the MT series AEC-Q200 certified?
No. Walsin’s datasheets say compliant, not certified, and Venatech makes no qualification claim. Seven of the 31 rows are MT. Request the qualification report for the exact part number before putting it on an approved vendor list.
Is a 47 nF capacitor on your Hong Kong shelf?
No. The list, a dated snapshot of 23 September 2026 and not live, holds 36 of the 854 X7R 100 V lines, including 18 nF and 100 nF in 0603, but not 47 nF. Whether a neighbour value serves is your design decision.
Did the Daily Mirror say anything about components?
No. It reported 59,734 registrations in March 2026 and 8,834 electric vehicles. It names no part, battery or supplier and does not say which vehicle types are electric, so we draw no conclusion about passives.
Can you advise on Sri Lankan customs or vehicle approval?
No. We hold no office, entity or stock in Sri Lanka and we give no legal, customs or compliance advice; confirm with your compliance team. We supply Walsin parts from Hong Kong in small lots, and qualification stays with you.