SDF-DF110S Thermal Fuse Guide: Specs, Pricing & Sourcing

The phrase 'sdf df110s' refers to the Cantherm SDF series DF110S thermal fuse, a critical non-resettable safety component used for overheat protection in electrical devices Allicdata Micro-Semiconductor.

Product Overview & Specifications

The SDF DF110S is an axial thermal cutoff (TCO) designed to open an electrical circuit permanently when it reaches a predetermined temperature Partskeys Allicdata.

Rated Functioning Temperature ($T_f$): 110°C (230°F) Digikey Allicdata.
Electrical Rating: 10A at 250VAC Partskeys Southelectronics.
Holding Temperature ($T_h$): 86°C (187°F) Digikey Allicdata.
Compliance: Global safety certifications including UL, VDE, CCC, and PSE Allicdata.

Market Trends & Insights

Application Range: Demand is primarily driven by the small domestic appliance market, including coffee makers, electric kettles, and space heaters, as well as industrial components like transformers and small motors Allicdata.
Supply Chain Status: The part is currently in the Active phase of its lifecycle Allicdata. While major distributors like DigiKey and Allicdata stock these items, large-scale procurement (10,000+ units) typically requires a Request for Quote (RFQ) due to fluctuating market prices Allicdata Distyparts.
Pricing Insight: Unit prices typically range from $0.29 USD for small quantities down to approximately $0.27 USD for bulk orders of 1,100+ units Allicdata.
Trending Alternatives: There is significant B2B activity for equivalent thermal fuses (e.g., RY110 series) from manufacturers like Baile and Reomax, which offer similar specifications at lower wholesale price points starting from $0.01 - $0.08 per piece Alibaba Alibaba.