Refrigerator and White Goods Electronics in Monterrey, Mexico, from Hong Kong: BSH Reported a 240 Million Euro Refrigerator Plant in Nuevo León, and All 60 Walsin Y2-Rated Disc Capacitors Above 1 nF Are Y5U or Y5V, With None of the 929 Disc Parts on the Shelf

White goods electronics in Monterrey, Mexico, that need a Y2 mains capacitor above 1 nF in disc form have only Y5U or Y5V in the Walsin Technology (Walsin) range: all 60 Y2-rated disc rows above 1 nF, and all 8 above 4.7 nF are Y5V. Our shelf holds none of the 929 disc part numbers.

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Venatech Limited, an authorised Walsin distributor in Hong Kong, wrote this from the Walsin disc capacitor export (929 rows, 929 distinct part numbers), the MLCC export (24,026 rows, 23,601 distinct) and our stock list as at 23 September 2026. It is for an engineer at an appliance controller or board plant around Monterrey who has a capacitor connected across or from the mains. Every part number is real and every count is ours. The market statements name their sources and the day we fetched them, 10 November 2026.

What did BSH and Expansión report about refrigerator production in Nuevo León?

Two reports show refrigerator output moving around the state. According to a BSH press release dated 31 July 2024, whose page carries an update note of 5 October 2026, BSH invested about 240 million euros in a refrigerator factory in Monterrey that planned about 1,500 skilled jobs in a first phase and ships mainly to the United States and Canada.

The release says the plant makes large French door bottom-mount refrigerators under the Bosch and Thermador brands. Separately, Expansión reported on 3 July 2026, citing the company’s regulatory filings, that Whirlpool will stop operating its Supsa refrigerator plant in Apodaca, Nuevo León, in the second quarter of 2027 and move that production mainly to Ramos Arizpe, Coahuila. Those are the reports’ statements, not ours. We have no relationship with either company and say nothing about what they buy.

Which dielectrics do Walsin Y2-rated disc capacitors use as the value rises?

Class II ones, and the dielectric is forced by the capacitance. Across the 186 Y2-rated rows of the Walsin disc export (Walsin_DiscCap_ALL.xlsx), SL stops at 100 pF, Y5P at 1 nF, Y5U at 4.7 nF and Y5V at 10 nF, so 60 rows above 1 nF are Y5U or Y5V only, and the 8 above 4.7 nF are all Y5V.

We counted this ourselves; no X7R-class dielectric exists in the disc range at all. The 367 safety-rated disc rows use four dielectrics, SL (126), Y5P (103), Y5U (91) and Y5V (47), under 10 series names. The export also writes the same dielectric two ways, “YU(Y5U)” and “Class II YU(Y5U)” among 11 spellings in all, and leaves the lead spacing, temperature coefficient, packing and SPQ columns empty on all 929 rows. A BOM filter keyed on the dielectric text will therefore split one dielectric into two groups. Our post on tolerance, TCR and dielectric codes decoded explains the code letters.

How much leakage current does a Y capacitor value add across the mains?

It scales directly with the value. As an assumed example, at 127 V and 60 Hz, which is a design value for you to replace, a 2.2 nF capacitor passes about 0.105 milliamp and a 4.7 nF capacitor about 0.225 milliamp, from the formula current equals two pi times frequency times capacitance times voltage.

This is our arithmetic and not a limit from any standard. The limit that applies to your product comes from its safety standard, and confirming it is a job for your compliance team. The practical point for the choice above is that a designer who moves up in value to fix a filtering problem moves up in leakage in the same proportion, and in the disc range also moves to a wider-drift dielectric.

Which Walsin parts answer a 2.2 nF, Y2, 250 V class brief, and what differs?

Disc parts match the value and the voltage class; the leaded form and the dielectric are what differ. For a brief of 2.2 nF, plus or minus 20 percent, Y2 with a 250 V class, the AC series has YU0AC222M080 in Y5U and YV0AC222M060 in Y5V; the only X7R part at this value is the SMD S2 series S252B222K502, which is on our shelf.

Walsin part	Form / series	Dielectric	Tolerance	Voltage class	On shelf 23 Sep 2026	Match / mismatch with the brief	Your incumbent
YU0AC222M080	Disc, AC series	Y5U	plus or minus 20%	X1-440 Vac / Y2-250 Vac	No	Match on value, tolerance and class; dielectric is Y5U
YV0AC222M060	Disc, AC series	Y5V	plus or minus 20%	X1-440 Vac / Y2-250 Vac	No	Match on value, tolerance and class; mismatch if you need less drift than Y5V
YU1AC222M080	Disc, AC series	Y5U	plus or minus 20%	X1-440 Vac / Y2-300 Vac	No	Match on value; class is Y2-300, higher than asked
S252B222K502	SMD, S2 series, size 2211	X7R	plus or minus 10%	export field reads 5,000 Vdc	Yes	Mismatch: SMD not leaded, size 2211, tolerance differs; the voltage field is not a working voltage

A match in the table is a match on the export fields and no more. The 5,000 V figure in the S2 rows is, as we read Walsin’s S2 approval sheet, an impulse rating and not an AC working voltage; all 173 S2 rows show 5,000 or 6,000 Vdc. Confirm against both datasheets and qualify in your own circuit. We hold no datasheet for the disc range.

What does the Hong Kong shelf hold in safety capacitors?

Three SMD lines, no disc parts. Of the 929 disc part numbers, none is on our stock list as at 23 September 2026; the snapshot’s three safety capacitor lines are all S2 series SMD parts: S242B102K502, S252B222K502 and S252B471K502ZT.

The shelf is 1,125 distinct part numbers in all, which we re-counted. The third code carries a “ZT” tail that the export’s own part number does not, a mismatch we cover in our earlier post on S2 codes. The ready stock list is a dated snapshot and never live-synced; the disc capacitor range lists the disc families. A leaded Y2 disc is a to-order enquiry, and we give no lead time or price.

What will we not tell you about appliance makers?

Anything about their safety approvals, leakage limits or purchasing. We hold 28 Walsin datasheets, 26 for MLCC and 2 for chip resistors, and none for the disc range, so every disc count here is catalogue coverage from the export and not a specification.

Walsin lists safety standards jointly for the safety series, and we do not map one standard to one certificate. We make no claim that any part meets an appliance standard. We hold no office, entity or stock in Mexico; our locations are Hong Kong, Shenzhen, Singapore and Jiangmen, with Chengdu in preparation. We hold no ISO 9001 or IATF 16949 certificate. We give no legal, customs or conformity advice; confirm with your compliance team.

How can Venatech help a Monterrey appliance electronics buyer?

How Venatech helps starts with a free paste box. The cross-reference tool, VenaMatch, decodes 18 manufacturers’ part numbers across 800,000+ crossable parts, accepts up to 500 part numbers or an Excel or CSV file, and marks each field of a Walsin candidate as match or mismatch, with a filter for safety certified parts. Load a whole BOM to review it. The ready-stock list is a Hong Kong snapshot dated 23 September 2026.

Worked example from our own exports: a 2.2 nF Y2 brief returned three disc matches in Y5U or Y5V, plus one X7R SMD neighbour that differs in form and tolerance. 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.

The short version

For a Monterrey appliance board, the Walsin disc range stops you at Y5U or Y5V once a Y2 capacitor passes 1 nF, 60 rows in all, while an X7R option exists only as an SMD part. Settle the value and the leakage before you settle the form.

Send us one mains capacitor line from your BOM, with the class and dielectric you must keep, and we will return the Walsin parts with every difference stated. If the dielectric is the constraint, which can move: the value or the form?

Sources

Fetched 10 November 2026.

• BSH Hausgeräte, “Milestone for North America growth strategy: BSH opens first refrigeration factory in Mexico”, 31 July 2024 (page note updated 5 October 2026): https://press.bsh-group.com/pressreleases/milestone-for-north-america-growth-strategy-bsh-opens-first-refrigeration-factory-in-mexico-3367264
• Expansión, “Whirlpool cerrará su planta de Apodaca: qué pasará”, 3 July 2026: https://expansion.mx/empresas/2026/07/03/whirpool-cerrara-apocada-que-pasara-planta

Related reading

• X1/Y1 versus X1/Y2 safety capacitors
• Tolerance, TCR and dielectric codes decoded
• How to cross-reference an MLCC
• Free tools: VenaMatch cross reference and the ready stock list

Last reviewed 10 Nov 2026.

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Frequently asked questions

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