Solar plant electronics for Morocco meet a narrow rung at 500 V: of the 346 Walsin Technology (Walsin) X7R capacitors rated 500 V, only 50 reach 100 nF, none of them smaller than 1210. The 1808 case, which has more board area than 1210, tops out at 68 nF. One of the 50 is on our shelf.
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 Moroccan solar plant, inverter or power electronics maker who is crossing a 500 V ceramic capacitor and is sizing the case before the value. 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 Morocco World News report on the Noor Atlas solar programme, and why does a component buyer care?
It reported six new plants. According to Morocco World News on 7 March 2026, ONEE and MASEN signed electricity purchase agreements for the Noor Atlas programme, six photovoltaic plants with a combined 305 MW, and announced the start of construction, with delivery expected from July 2027.
Those are the report’s figures, not ours. The plants named are at Ain Beni Mathar, Boudnib, Bouanane, Enjil, Tata and Tan-Tan. The conclusion we draw is ours: solar plant and inverter electronics carry mid-voltage ceramic capacitors, and the 500 V rung has an uneven ladder by case size. We have no relationship with ONEE, MASEN or any contractor, and we say nothing about what anyone buys.
Which Walsin parts cross a 100 nF, 500 V, X7R, plus or minus 10 percent brief in 1210, and what differs?
Two match closely and one is on the shelf. We parsed the export for X7R parts at 100 nF and 500 V: 12 part numbers across the 1210, 1812, 2220 and 2225 cases; 1210B104K501 is the General Purpose 1210, plus or minus 10 percent match, and 1 of the 12, 1812B104K501, is on our shelf.
The reader’s incumbent goes in the last column.
| Walsin part | Description | On shelf 23 Sep 2026 | Match / mismatch with the brief | Your incumbent |
|---|---|---|---|---|
1210B104K501 |
Middle to High Voltage, 1210, X7R, 100 nF, plus or minus 10%, 500 V, 2.00 plus or minus 0.20 mm | No | Match on size, dielectric, value, tolerance and voltage | |
SH32B104K501 |
Soft termination SH series, 1210, X7R, 100 nF, plus or minus 10%, 500 V | No | Match on the electrical fields; mismatch in series (soft termination) | |
1210B104J501 |
Middle to High Voltage, 1210, X7R, 100 nF, plus or minus 5%, 500 V | No | Mismatch: tolerance is plus or minus 5 percent | |
1812B104K501 |
Middle to High Voltage, 1812, X7R, 100 nF, plus or minus 10%, 500 V, same 2.00 mm height | Yes | Match on the electrical fields; mismatch in case size (1812); the nearest shelf part | |
2220B104K501 |
Big Sizes series, 2220, X7R, 100 nF, plus or minus 10%, 500 V | No | Match on the electrical fields; mismatch in case size (2220) and series |
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 middle and high voltage MLCC covers the 200 V to 4 kV series.
How far does each case size go at 500 V X7R?
Not in the order of board area. We counted the 346 X7R parts rated 500 V: 79 in 0805 reach 33 nF, 111 in 1206 reach 56 nF, 54 in 1210 reach 150 nF, 11 in 1808 reach 68 nF, 60 in 1812 reach 470 nF, 3 in 1825 reach 270 nF, 21 in 2220 reach 1 µF and 7 in 2225 reach 470 nF.
Counted across all series, 50 reach 100 nF: 6 in 1210, 21 in 1812, 3 in 1825, 14 in 2220 and 6 in 2225. None in 0805, 1206 or 1808 does. We have not seen the eight ceilings set side by side anywhere. The 1808, which is about 9.0 square millimetres of footprint against about 8.0 for 1210, stops below it, so a case chosen for area alone can leave you short.
What does the Hong Kong shelf hold at 500 V X7R?
Twelve lines, one at 100 nF. Of the 346 X7R parts rated 500 V, 12 are on our stock list as at 23 September 2026: 5 in 0805, 4 in 1206, 1 in 1210 and 2 in 1812; the highest value is 100 nF, in 1812B104K501.
The shelf spans 11 values from 150 pF to 100 nF, all in the Middle to High Voltage series. The ready stock list is a dated snapshot, never live-synced, and the MLCC range lists the families. For a 1210 at 100 nF, ask for it by exact part number and we will pass the request on.
What will we not tell you about solar plant electronics?
Anything about your inverter design, your plant’s grid code or your tender. Of the 28 Walsin datasheets we hold, 26 cover MLCC series, and none names a solar plant or an inverter, so every count here is catalogue coverage, not suitability.
We make no claim that any part suits a plant, an inverter or a string combiner, and a voltage rating is not a working voltage; Class II capacitance also falls with applied voltage, so derate for your circuit. We hold no ISO 9001 or IATF 16949 certificate. We hold no office, entity or stock in Morocco; 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.
Why do buyers in Morocco choose Venatech?
Because we tell you the rung is narrow before you design to it. Venatech Limited is an authorised Walsin Technology distributor in Hong Kong, and the Walsin range offers 346 X7R part numbers at 500 V across eight case sizes, from 33 nF in 0805 to 1 µF in 2220.
A Moroccan buyer gets a Hong Kong team that welcomes small lots, answers cross-reference questions field by field, and states in advance that 100 nF at 500 V starts at 1210 and that 1808 stops at 68 nF. 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. That frankness protects your qualification schedule.
How can Venatech help a Moroccan solar and power electronics 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, 500 V X7R brief returned 12 parts in 4 cases, 1 exact General Purpose match in 1210 and 1 shelf part in 1812. 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. Our post on the ready-stock MLCC shelf by case size and series shows what is on the shelf today.
The short version
For a Moroccan solar or power electronics maker, 500 V X7R is a narrow rung: 50 of 346 parts reach 100 nF, none below 1210, the 1808 case stops at 68 nF, and 1 of the 50 is on our shelf. Check the case size and the value together.
Send us one 500 V capacitor line from your BOM, with the case size you must keep, and we will return the Walsin parts with every difference stated. If your board needs 100 nF at 500 V, can it take 1210 or larger?
Sources
Fetched 2 November 2026.
- Morocco World News, “Morocco launches 305 MW Noor Atlas solar program as ONEE and MASEN sign power agreements”, 7 March 2026: https://www.moroccoworldnews.com/2026/03/281924/morocco-launches-305-mw-noor-atlas-solar-program-as-onee-and-masen-sign-power-agreements/
Frequently asked questions
What did Morocco World News report about the Noor Atlas programme?
According to Morocco World News on 7 March 2026, ONEE and MASEN signed electricity purchase agreements for six photovoltaic plants with a combined 305 MW, with construction starting and delivery expected from July 2027. These are the report’s figures, not ours.
How many Walsin X7R capacitors rated 500 V reach 100 nF?
50 of 346, in 1210 (6), 1812 (21), 1825 (3), 2220 (14) and 2225 (6). None in 0805, 1206 or 1808. Confirm each against its datasheet before design-in, and remember a voltage rating is not a working voltage.
Which Walsin parts cross a 100 nF, 500 V, X7R, plus or minus 10 percent, 1210 brief?
1210B104K501 matches every field; SH32B104K501 matches electrically in the soft-termination series; 1812B104K501 matches electrically in 1812 and is on our shelf. Confirm against both datasheets.
What is the highest 500 V X7R capacitance in 1808?
68 nF, across 11 part numbers, which is below the 150 nF reached in 1210. Check the datasheet for each part before you choose a case.
Which Walsin 500 V X7R parts are on the Hong Kong shelf?
Twelve of 346, as at 23 September 2026, the highest value being 100 nF in 1812. 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 Morocco?
No. We hold no office, entity or stock in Morocco; 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.