# Over 30 years in safety capacitors and circuit protection. - Page: https://www.songtian-ste.com/en/ - Chinese version: https://www.songtian-ste.com/zh/ STE · Songtian brand since 1995 · Company est. 2012 - [**Ceramic capacitors** 9 series](https://www.songtian-ste.com/en/products/ceramic-capacitors/) - [**Film capacitors** 24 series](https://www.songtian-ste.com/en/products/film-capacitors/) - [**Varistors** 7 series](https://www.songtian-ste.com/en/products/metal-oxide-varistors/) - [**Thermistors** 15 series](https://www.songtian-ste.com/en/products/thermistors/) - [**SMD components** 7 series](https://www.songtian-ste.com/en/products/smd/) - [**Automotive** 6 series](https://www.songtian-ste.com/en/products/automotive/) STE develops capacitors, varistors and thermistors through in-house materials research, product design and testing. A provincial engineering research center, a CNAS-accredited test center and a UL WTDP laboratory support that work. STE is recognized under China’s national “Little Giant” program. [Browse all products](https://www.songtian-ste.com/en/products/) [Look up a part number](https://www.songtian-ste.com/en/parts/) - **4 / 55**: Product lines / series - **17,903**: STE part numbers - **IATF 16949**: Automotive QMS AI cross reference ## Look up an STE part number, or compare a part from another manufacturer. Enter an STE part number to open its series and datasheet. Enter another manufacturer’s part number to see STE candidates and where their parameters differ. [Open AI cross reference](https://www.songtian-ste.com/en/parts/) [AI Assistant](https://www.songtian-ste.com/en/contact/) - **15**: Manufacturers covered for cross reference Test center · management systems ## In-house test center accredited to ISO/IEC 17025. Accredited by CNAS under L24638, and part of the UL Witnessed Test Data Program for UL 1449 and UL 60384-14 (lab no. 701335-001). Management systems are certified to ISO 9001, IATF 16949, ISO 14001 and ISO 45001. [Quality and approvals](https://www.songtian-ste.com/en/quality/) [About STE](https://www.songtian-ste.com/en/company/) - **CNAS L24638**: ISO/IEC 17025 - **701335-001**: UL WTDP lab no. - **75,000 m²**: Shantou R&D and production site AI Cross Reference ## Enter any part number. Get STE candidates, rating by rating. The part is decoded from its maker’s own ordering rules, then matched against STE parts with every difference and open check listed. Paste a whole BOM to check up to 50 parts at once, then download or share the results. - [Paste a BOM for batch cross reference](https://www.songtian-ste.com/en/parts/#bom) - [Or ask the AI Assistant](https://www.songtian-ste.com/en/contact/) Part numbers from 15 manufacturers · STE part numbers matched as you type [**AI cross reference** From an STE part number to its datasheet, or from another manufacturer’s part to STE candidates](https://www.songtian-ste.com/en/parts/) [**Find a product series** Filter by product type, rated voltage, capacitance, resistance and more](https://www.songtian-ste.com/en/products/finder/) [**Browse products** 4 product lines, 55 series](https://www.songtian-ste.com/en/products/) [**Downloads** Datasheets, approval certificates and catalogs](https://www.songtian-ste.com/en/resources/) [**AI Assistant** Ask our AI Assistant about selection, ratings and cross reference, or contact an engineer for further help](https://www.songtian-ste.com/en/contact/) [**electronica 2026 · Stand B6.281** Messe München, Munich, Germany · 10–13 November 2026 · Part search and cross reference at the stand](https://www.songtian-ste.com/en/electronica-2026/) Company film · 2026 ## Inside the Shantou plant, in under five minutes. The film follows safety capacitors, varistors and NTC thermistors through the main production and test steps. - **04:55**: Full film - **Manufacturing · test · quality**: Covers - **English**: Narration & subtitles [Visit Songtian on YouTube](https://www.youtube.com/@songtian-ste) [Watch on YouTube](https://www.youtube.com/watch?v=AfjxUa98QEA) Products ## Leaded and surface mount. Safety and automotive. From power supplies and appliances to industrial and automotive electronics: components for EMI suppression, surge protection and temperature sensing. 4 product lines · 55 series · 17,903 part numbers ### [Ceramic capacitors](https://www.songtian-ste.com/en/products/ceramic-capacitors/) EMI suppression in power supplies and appliances, plus medium- and high-voltage industrial circuits. - [Safety disc capacitors](https://www.songtian-ste.com/en/products/ceramic-capacitors/#safety-disc) - [Medium- and high-voltage disc capacitors](https://www.songtian-ste.com/en/products/ceramic-capacitors/#hv-disc) - [SMD ceramic capacitors](https://www.songtian-ste.com/en/products/ceramic-capacitors/#smd-ceramic) [9 series · 4,582 part numbers](https://www.songtian-ste.com/en/products/ceramic-capacitors/) ### [Film capacitors](https://www.songtian-ste.com/en/products/film-capacitors/) Input EMI suppression, power filtering and DC-link support in solar and energy-storage inverters. - [Damp-heat capacitors (THB)](https://www.songtian-ste.com/en/products/film-capacitors/#thb) - [EMI suppression capacitors](https://www.songtian-ste.com/en/products/film-capacitors/#emi-suppression) - [DC-Link capacitors](https://www.songtian-ste.com/en/products/film-capacitors/#dc-link) [24 series · 8,419 part numbers](https://www.songtian-ste.com/en/products/film-capacitors/) ### [Varistors](https://www.songtian-ste.com/en/products/metal-oxide-varistors/) Surge protection at the power input, absorbing transient overvoltages in appliances and industrial equipment. - [Radial-leaded varistors](https://www.songtian-ste.com/en/products/metal-oxide-varistors/#leaded) - [High-energy varistors](https://www.songtian-ste.com/en/products/metal-oxide-varistors/#high-energy-disc) - [SMD varistors](https://www.songtian-ste.com/en/products/metal-oxide-varistors/#smd-varistors) [7 series · 3,345 part numbers](https://www.songtian-ste.com/en/products/metal-oxide-varistors/) ### [Thermistors (NTC / PTC)](https://www.songtian-ste.com/en/products/thermistors/) Inrush current limiting, temperature sensing and compensation, and overcurrent or overload protection. - [NTC inrush current limiters](https://www.songtian-ste.com/en/products/thermistors/#ntc-inrush) - [NTC sensing thermistors](https://www.songtian-ste.com/en/products/thermistors/#ntc-sensing) - [PTC thermistors](https://www.songtian-ste.com/en/products/thermistors/#ptc) [15 series · 1,557 part numbers](https://www.songtian-ste.com/en/products/thermistors/) [Surface mount SMD components SMD ceramic capacitors, varistors and thermistors 7 series · 301 part numbers](https://www.songtian-ste.com/en/products/smd/) [Automotive electronics Automotive Capacitors and varistors for automotive electronics. AEC-Q200 qualification reports and qualified part numbers on request. 6 series · 396 part numbers](https://www.songtian-ste.com/en/products/automotive/) SMD and automotive series are included in the product lines above. [Browse all products](https://www.songtian-ste.com/en/products/) Applications ## Where the parts sit in the circuit. ### Switch-mode power supplies and chargers X2 and Y capacitors in the input EMI filter; NTC thermistors for inrush current limiting; varistors for surge protection at the AC input. ### Household appliances Film and ceramic safety capacitors for mains filtering and interference suppression; varistors to absorb surges at the power input; NTC thermistors for temperature sensing. ### Industrial equipment and converters DC-link film capacitors to support the DC bus; medium- and high-voltage ceramic capacitors at high-voltage nodes; varistors for surge protection. ### Automotive electronics Automotive series: CY-A, CE-A, MPX/X2-A, MPK/X1-A, MPY/Y2-A and Q-A. ### Renewable energy DC-link film capacitors on the DC side of solar and storage inverters; varistors for surge protection on the AC side. Quality systems & approvals ## Approvals are listed per series, with certificate numbers. Approval scope as stated on each certificate. [Quality and approvals](https://www.songtian-ste.com/en/quality/) UL **UL** UL recognition for selected series; laboratory in the UL Witnessed Test Data Program for UL 1449 and UL 60384-14 VDE **VDE** VDE certificates for selected series ENEC **ENEC** ENEC certificates for selected series CQC **CQC** CQC certificates for selected series **IATF 16949** Automotive quality management system certification **CNAS L24638** Test center accredited by CNAS to ISO/IEC 17025 News ## Products, approvals and trade fairs. Product releases, new approvals and trade-fair dates. Events Jun 17, 2026 ### [STE at electronica China 2026](https://www.songtian-ste.com/en/news/ste-to-showcase-advanced-passive-components-at-electronica-china-2026/) STE showed passive components for automotive, energy, industrial automation, communications and high-power-density applications at electronica China 2026 in Shanghai on 1–3 July. [Read story](https://www.songtian-ste.com/en/news/ste-to-showcase-advanced-passive-components-at-electronica-china-2026/) Events May 27, 2026 ### [STE at SNEC PV+ 2026](https://www.songtian-ste.com/en/news/ste-brings-power-and-protection-components-to-snec-pv-2026/) STE showed passive components for photovoltaic, energy-storage and new-power-system applications at SNEC PV+ 2026 in Shanghai. [Read story](https://www.songtian-ste.com/en/news/ste-brings-power-and-protection-components-to-snec-pv-2026/) Events May 27, 2026 ### [STE at PCIM Europe 2026](https://www.songtian-ste.com/en/news/meet-ste-at-pcim-europe-2026-in-nuremberg/) STE showed capacitors, varistors and thermistors for power conversion, renewable energy, charging infrastructure and industrial electronics at PCIM Europe 2026 in Nuremberg. [Read story](https://www.songtian-ste.com/en/news/meet-ste-at-pcim-europe-2026-in-nuremberg/) [All news](https://www.songtian-ste.com/en/news/) Songtian Science and Technology Park, Shantou (aerial view) Production floor Automated production lines Automated assembly equipment Reliability and test laboratory In-process quality control Manufacturing ## Developed, produced and tested in Shantou. R&D and production share one 75,000 m² site: Songtian Science and Technology Park in the Shantou Bonded Zone, with an east and a west campus. - IATF 16949 automotive quality management system - UL 1449 / UL 60384-14 WTDP laboratory (701335-001) - CNAS L24638 accredited test center (ISO/IEC 17025) - In-house electrical, mechanical, climatic and environmental-compliance testing [View the test capability matrix](https://www.songtian-ste.com/en/quality/) Sales & technical support ## Need samples, datasheets or a quotation? Tell us the series or part number, the application and your annual volume. STE sales will reply by email. [Request samples or a quotation](https://www.songtian-ste.com/en/contact/)