Solar inverter electronics for Tunisia meet a thin 1,500 V shelf: only 60 of 23,601 Walsin Technology (Walsin) MLCC part numbers are rated 1,500 V, and 41 of those are X7R. Mid-voltage X7R stops at 22 nF, soft-termination reaches 100 nF, and 2 of the 60 are 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 Tunisian solar developer, inverter maker or power electronics assembler who is crossing a high-voltage ceramic 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 SolarQuarter report on Tunisia’s sixth photovoltaic licensing round, and why does a component buyer care?
It reported a long list of mid-sized plants. According to SolarQuarter on 8 September 2026, Tunisia approved 309 solar photovoltaic projects with combined capacity of 455 MW in its sixth licensing round, made up of 187 plants of 1 MW, 119 of 2 MW and 3 of 10 MW, with developers selling their output to the state utility STEG.
Those are the report’s figures, not ours. The conclusion we draw is ours: hundreds of one- and two-megawatt plants mean hundreds of inverter and protection designs, each with a high-voltage bus capacitor that has to exist at the case size the board allows. We have no relationship with any Tunisian developer, STEG or any inverter maker, and we say nothing about what any of them buys.
Which Walsin MLCC are rated 1,500 V, and what differs?
Sixty, in four series and seven case sizes. We parsed the 23,601 distinct part numbers and found 60 rated 1,500 V: 28 Middle to High Voltage, 15 Microwave RF, 14 soft-termination SH and 3 Big Size; of the 41 X7R parts the ceilings are 22 nF in Middle to High Voltage, 56 nF in Big Size and 100 nF in SH.
A brief of 10 nF, X7R, 1,500 V and plus or minus 10 percent returns four part numbers. The reader’s incumbent goes in the last column.
| Walsin part | Description | On shelf 23 Sep 2026 | Match / mismatch with the brief | Your incumbent |
|---|---|---|---|---|
1206B103K152 |
Middle to High Voltage, 1206, X7R, 10 nF, plus or minus 10%, 1,500 V, 1.60 plus or minus 0.20 mm | No | Match on size, dielectric, value, tolerance and voltage | |
1210B103K152 |
Middle to High Voltage, 1210, X7R, 10 nF, plus or minus 10%, 1,500 V, 2.50 plus or minus 0.30 mm | No | Match on the electrical fields; mismatch in case size and a taller body | |
1808B103K152 |
Middle to High Voltage, 1808, X7R, 10 nF, plus or minus 10%, 1,500 V, 2.00 plus or minus 0.20 mm | No | Match on the electrical fields; mismatch in case size | |
SH31B103K152 |
Soft-termination SH series, 1206, X7R, 10 nF, plus or minus 10%, 1,500 V | No | Match on the electrical fields; mismatch in series (soft termination, a different construction) | |
1206B562K152 |
Middle to High Voltage, 1206, X7R, 5.6 nF, plus or minus 10%, 1,500 V | Yes | Mismatch: 5.6 nF, not 10 nF; the nearest shelf part |
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 a working voltage, and soft termination MLCC covers the SH construction.
How does 1,500 V compare with the neighbouring voltage steps?
It is a thin rung between two thicker ones. In the same export, 363 X7R parts are rated 1,000 V and reach 220 nF, 242 are rated 2,000 V and reach 56 nF, and 41 are rated 1,500 V and reach 100 nF only in the SH soft-termination series.
We counted the ladder so the reader does not have to. If your design allows a step to 1,000 V in series or a step to 2,000 V, the choice widens a great deal; if it needs exactly 1,500 V, the shortlist is the four-part table above. We have not seen this counted anywhere. Paste your line into the cross-reference tool and look at the voltage field first.
What does the Hong Kong shelf hold at 1,500 V?
Two lines, both 1206. Of the 60 parts rated 1,500 V, 2 are on our stock list as at 23 September 2026: 1206B562K152 (5.6 nF, plus or minus 10 percent) and 1206B472J152 (4.7 nF, plus or minus 5 percent).
Neither reaches 10 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 solar power electronics?
Anything about your inverter topology, your grid-code approval or your insulation coordination. Of the 28 Walsin datasheets we hold, 26 cover MLCC series, and none names a photovoltaic product, so every count here is catalogue coverage, not suitability.
We make no claim that any part suits an inverter or a 1,500 V bus, or that a voltage rating equals a working voltage. We hold no ISO 9001 or IATF 16949 certificate. We hold no office, entity or stock in Tunisia; 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 Tunisia choose Venatech?
Because we tell you exactly how thin the rung is. Venatech Limited is an authorised Walsin Technology distributor in Hong Kong, and the Walsin MLCC range spans ratings from 4 V to 4 kV, with 60 part numbers at 1,500 V, 363 X7R at 1,000 V and 242 X7R at 2,000 V.
A Tunisian buyer gets a Hong Kong team that welcomes small lots, answers cross-reference questions field by field, and shows the 1,500 V shortlist before you commit a layout. 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. We would rather show you a short list honestly than a long one that fails.
How can Venatech help a Tunisian 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 10 nF, 1,500 V X7R brief returned 4 parts in 2 series and 3 case sizes, none stocked, and the nearest shelf part is 5.6 nF. 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 Tunisian inverter maker, a 1,500 V ceramic capacitor is a shortlist of 60 part numbers, 41 of them X7R, with a 22 nF ceiling in the mid-voltage series and 2 lines on the shelf. The ladder either side is much deeper. Check whether your design really needs exactly 1,500 V.
Send us one high-voltage capacitor line from your BOM, with the voltage step and case size you can accept, and we will return the Walsin parts with every difference stated. If your bus is rated 1,500 V, what working voltage will the capacitor actually see?
Sources
Fetched 2 November 2026.
- SolarQuarter, “Tunisia approves 309 solar PV projects with combined capacity of 455 MW”, 8 September 2026: https://solarquarter.com/2026/09/08/tunisia-approves-309-solar-pv-projects-with-combined-capacity-of-455-mw/
Frequently asked questions
What did Tunisia approve in its sixth photovoltaic licensing round?
According to SolarQuarter on 8 September 2026, 309 projects with combined capacity of 455 MW: 187 plants of 1 MW, 119 of 2 MW and 3 of 10 MW, selling output to STEG. These are the report’s figures, not ours.
How many Walsin MLCC are rated 1,500 V?
60 distinct part numbers: 28 Middle to High Voltage, 15 Microwave RF, 14 soft-termination SH and 3 Big Size. 41 are X7R. Confirm each against its datasheet before design-in, and remember a voltage rating is not a working voltage.
What is the highest X7R capacitance at 1,500 V in the Walsin export?
100 nF, in the SH soft-termination series at 2225. The Middle to High Voltage series stops at 22 nF and the Big Size series at 56 nF. Confirm against the datasheet for your exact part number.
Which Walsin parts cross a 10 nF, 1,500 V, plus or minus 10 percent X7R brief?
1206B103K152, 1210B103K152 and 1808B103K152 match the electrical fields in three case sizes, and SH31B103K152 matches in a soft-termination series. None is on our shelf. Confirm against both datasheets and qualify in your own circuit.
Which 1,500 V Walsin parts are on the Hong Kong shelf?
Two, as at 23 September 2026: 1206B562K152 at 5.6 nF and 1206B472J152 at 4.7 nF. The snapshot is dated, not live, so ask us through the site for current availability.
Do you hold stock or an office in Tunisia?
No. We hold no office, entity or stock in Tunisia; 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.