Cold chain electronics for Kenya meet a 630 V ceiling: of 233 Walsin Technology (Walsin) X7R capacitors rated 630 V, only 13 reach 100 nF, all in 1210 or 1812. One of the 13, 1812B104K631, is on our shelf; no 1206 or 0805 part at 630 V gets past 56 nF.
Venatech Limited, an authorised Walsin distributor in Hong Kong, wrote this from the Walsin MLCC export (24,026 rows, 23,601 distinct part numbers) and our stock list as at 23 September 2026. It is for a design or sourcing engineer at a Kenyan maker or assembler of cold-room controllers, refrigeration drives or cold-storage monitoring who is crossing a high-voltage filter or snubber capacitor. Every part number is real and every count is ours. The market statement names its source and the day we fetched it, 2 November 2026.
What did FreshPlaza report on Kenya’s cold chain, and why does it matter to a component buyer?
It reported a build-out against a large loss. According to FreshPlaza on 26 May 2026, 30 to 40 percent of Kenya’s food production does not reach consumers, one Tatu City cold-storage facility covers 15,000 square metres and about 20,000 pallets across a range from plus 26 to minus 40 degrees Celsius, and an East Africa cold-chain programme targets 100,000 tonnes of cold storage across five countries.
Those are the article’s figures, not ours. The conclusion we draw is ours: every new cold room brings compressor drives, controllers and power supplies, and the high-voltage capacitor on the drive board is a part number that has to be found before the order, not after. We have no relationship with any Kenyan cold-chain operator, and we say nothing about what any of them buys.
Which Walsin 630 V X7R capacitors reach 100 nF, and what differs?
Thirteen, in two sizes. We parsed the 233 Walsin X7R parts rated 630 V in the Middle to High Voltage series: by size they top out at 33 nF in 0805, 56 nF in 1206, 150 nF in 1210, 82 nF in 1808 and 470 nF in 1812, so the 13 parts at 100 nF or more sit only in 1210 (5) and 1812 (8).
A brief of 100 nF, X7R, 630 V, plus or minus 10 percent and a nominal height of 2.00 mm narrows to two parts. The reader’s incumbent goes in the last column.
| Walsin part | Description | On shelf 23 Sep 2026 | Match / mismatch with the brief | Your incumbent |
|---|---|---|---|---|
1812B104K631 |
1812, X7R, 100 nF, plus or minus 10%, 630 V, 2.00 plus or minus 0.20 mm | Yes | Match on size class, value, tolerance, voltage and height | |
1210B104K631 |
1210, X7R, 100 nF, plus or minus 10%, 630 V, 2.00 plus or minus 0.20 mm | No | Match on the electrical fields; mismatch in case size if your footprint is 1812 | |
1812B104J631 |
1812, X7R, 100 nF, plus or minus 5%, 630 V, 2.00 plus or minus 0.20 mm | No | Mismatch: tolerance is plus or minus 5 percent | |
1812B104M631 |
1812, X7R, 100 nF, plus or minus 20%, 630 V, 2.00 plus or minus 0.20 mm | No | Mismatch: tolerance is plus or minus 20 percent | |
1210B124K631 |
1210, X7R, 120 nF, plus or minus 10%, 630 V, 2.50 plus or minus 0.30 mm | No | Mismatch: 120 nF and a taller body, up to 2.80 mm |
A match in the table is a match on the export fields, no more. Confirm against both datasheets and qualify in your own circuit. Our post on MLCC DC bias and voltage derating explains why a voltage rating is not the working voltage, and how to cross-reference an MLCC shows the field-by-field method.
Why does a 630 V brief at 100 nF force a larger case?
Because the ceiling rises with size, not with the voltage step. At 250 V, 52 Walsin X7R parts reach 100 nF and 6 of them are 1206; at 500 V, 20 parts reach it and none is 1206; at 630 V, 13 do and none is 1206; at 1000 V, 1 does.
We counted these ladders from the export so the reader does not have to. A board laid out for 1206 at 250 V cannot take the same capacitance at 630 V without moving to 1210 or 1812. We have not seen this counted by voltage step anywhere. The 1812 part is the one on our shelf, so check the footprint first.
What does the Hong Kong shelf hold at 630 V X7R?
Nineteen lines, mostly small values. Of the 233 Walsin X7R parts at 630 V, 19 are on our stock list as at 23 September 2026, from 1206B391K631 at 390 pF to 1812B104K631 at 100 nF; only that last one reaches 100 nF.
The ready stock list is a dated snapshot, never live-synced, and the MLCC range lists the families. If your brief needs a value the shelf lacks, ask for a to-order enquiry through the site and we will say plainly what we hold and what we do not.
What will we not tell you about cold-chain equipment?
Anything about your compressor, your insulation system or your food-safety audit. Of the 28 Walsin datasheets we hold, 26 cover MLCC series, and none names a refrigeration or cold-storage product, so every count here is catalogue coverage, not suitability.
We make no claim that any part suits a cold room or meets any food-safety or electrical scheme. We hold no ISO 9001 or IATF 16949 certificate. We hold no office, entity or stock in Kenya; our locations are Hong Kong, Shenzhen, Singapore and Jiangmen, with Chengdu in preparation. We give no legal, customs or conformity advice; confirm with your compliance team. Qualification stays with you.
Why do buyers in Kenya choose Venatech?
Because we put the limits on the table before you design. Venatech Limited is an authorised Walsin Technology distributor in Hong Kong, and the Walsin Middle to High Voltage range alone is 3,871 part numbers from 200 V to 4 kV across seven case sizes.
A Kenyan buyer gets a Hong Kong team that welcomes small lots, answers cross-reference questions field by field, and says in advance that 100 nF at 630 V needs 1210 or 1812. Our VenaMatch tool decodes 18 manufacturers’ part numbers and covers 800,000+ crossable parts, and every candidate comes back with each field marked match or mismatch. A candid mismatch is worth more than a confident match that fails at qualification.
How can Venatech help a Kenyan cold-chain equipment maker?
How Venatech helps starts with a free paste box. The cross-reference tool accepts up to 500 part numbers or an Excel or CSV file and shows Walsin candidates with each field marked 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 100 nF, 630 V X7R brief returned 13 parts in two case sizes, and one 1812 part is on the shelf. Walsin is the only line we are authorised for; Stackpole and Viking are lines we supply. We serve from Hong Kong in small lots, we help cross-reference, and you request a quote through the site. We hold 28 Walsin datasheets, 451 pages, and send them on request.
The short version
For a Kenyan cold-chain equipment maker, 100 nF at 630 V X7R is a case-size decision: 13 of 233 parts reach it, all 1210 or 1812, and one 1812 part is on the shelf. At 250 V the same value exists in 1206. Check the footprint before the voltage.
Send us one high-voltage capacitor line from your BOM, with the case size and height you can accept, and we will return the Walsin parts with every difference stated. If your incumbent is a 1206 at 630 V, does its capacitance really match your 100 nF?
Sources
Fetched 2 November 2026.
- FreshPlaza, “Kenya ramps up cold chain investment as post-harvest food losses reach 578 million US dollars”, 26 May 2026: https://www.freshplaza.com/africa/article/9841203/kenya-ramps-up-cold-chain-investment-as-post-harvest-food-losses-reach-us-578-million/
Frequently asked questions
What did FreshPlaza report about Kenya’s cold chain in May 2026?
On 26 May 2026 it reported that 30 to 40 percent of food production does not reach consumers, a Tatu City facility of 15,000 square metres and about 20,000 pallets, and a programme targeting 100,000 tonnes of cold storage in five countries. These are the article’s figures, not ours.
How many Walsin 630 V X7R capacitors reach 100 nF?
13 of 233, all in 1210 (5) or 1812 (8). No 0805 or 1206 part at 630 V X7R exceeds 56 nF. Confirm each against its datasheet before design-in, including the body height of up to 2.20 mm.
Which Walsin part crosses a 100 nF, 630 V, plus or minus 10 percent X7R brief?
1812B104K631 and 1210B104K631 match on every export field except case size; the 1812 part is on our shelf. Plus or minus 5 and 20 percent versions exist. Confirm against both datasheets and qualify in your own circuit.
Is there a 1206 Walsin part at 100 nF and 630 V?
No. In the export, the 1206 X7R line at 630 V stops at 56 nF. At 250 V, 6 of the 52 parts reaching 100 nF are 1206, so a board laid out for 250 V may not take a 630 V swap.
Which Walsin 630 V X7R capacitors are on the Hong Kong shelf?
Nineteen of 233, as at 23 September 2026, from 390 pF to 100 nF. The snapshot is dated, not live, so ask us through the site for current availability and to-order options.
Do you hold stock or an office in Kenya?
No. We hold no office, entity or stock in Kenya; our locations are Hong Kong, Shenzhen, Singapore and Jiangmen. We hold no ISO 9001 or IATF 16949 certificate and give no legal, customs or conformity advice. Confirm with your compliance team.