Sourcing Y-class safety capacitors from China

UK duty on Y-class safety capacitors

Read from the UK Trade Tariff on 30 September 2026, heading 8532 covers electrical capacitors, fixed, variable or adjustable. This guide concerns Y-class safety capacitors. The table lists dielectric categories to check against the manufacturer's specification; the residual category applies only where the named dielectric categories do not fit.

The supplied tariff record shows 0% duty for goods from China on every line, with no anti-dumping or countervailing duty, suspensions or attached import controls. The safety-class designation alone does not identify the dielectric category.

Confirm the construction and full part number with your customs broker using finding your commodity code. For related suppression capacitors and wider heading context, see X2 interference suppression capacitors.

Specify the Y-class part and its evidence

Specify the circuit position, exact Y safety class, capacitance, tolerance, rated operating voltage, temperature range, dielectric, body dimensions, lead spacing and packing. Include the manufacturer's full part number and agree that substitutions need your written acceptance. Ask for the approval documents and test reports covering that exact construction and rating.

Official GB guidance says component parts sold on a business-to-business basis are outside the RoHS Regulations. Components used in electrical products sold in the UK still need material information supporting the finished product's compliance. Ask for part-specific restricted-substance declarations and material data. A finished product must comply with all applicable legislation when placed on the Great Britain market.

Worked duty example

Illustrative example, not a quote: 10,000 single-layer ceramic Y-class safety capacitors, illustrative order only under 8532 23 00 00, invoiced at £1,860 free on board, with £300 of freight and insurance to the UK. The customs value is £2,160. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £2,160, so it is £432. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Identity: compare body markings, manufacturer, safety class, voltage rating and lot labels with the ordered part and its approval documents.

Electrical checks: sample capacitance and tolerance against the datasheet; agree insulation and dielectric test methods with the manufacturer or testing laboratory.

Physical condition: check for cracked ceramic bodies, damaged encapsulation, bent leads and incorrect lead spacing before assembly.

Traceability: reconcile carton quantities and batch identifiers with the packing list, test records and material declarations. Use the quality inspection guide to define the checks.

What goes wrong

A matching capacitance can hide a different safety class, voltage rating or dielectric. Approval documents may cover a different model or omit the supplied rating. Reject unexplained substitutions and obtain matching documents before releasing the batch for assembly.

Ceramic bodies can crack during handling or board assembly, while incorrect lead spacing encourages forced fitting. Compare production samples with the agreed drawing and retain the batch records. A satisfactory capacitance reading alone does not establish that the supplied part matches the agreed safety specification.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For components and parts, see sourcing for manufacturers.