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Radial Lead Thermal Cutoff

The TCO (Thermal Cut−Off) responds to temperature by interrupting an electrical circuit when the operating and/or environmental temperature exceeds the thermal rating of the device. NTE’s radial lead TCO2 accomplish this when the internal fusible alloy is melted by reaching the temperature of the melting point of the alloy, forming two separate balls at the edges of the leads by surface tension of the alloy to permanently open the circuit.

Axial−lead TCO devices presently predominate over radial−lead devices. This results, at least in part, from design difficulties that exist in manufacturing a reliable, inexpensive radial−lead TCO device. However, in many circuit applications radial−lead devices are preferable since they take up a smaller area on a printed circuit board. Their compact size enables ease of assembly into the smallest of transformers ensuring total thermal protection

Features:

• Non-Resettable
• Maximum Rating: 5 Amps, 250 Volts
• Typical Operating Temperature Tolerance +1−2°C
• Full 2 3/4” leads to fit all replacement configurations
• All types meet UL E214712 and VDC−40017057
• RoHS Compliant

Data Sheet

NTE Type No.	Functioning Temperature		Holding Temperature		Maximum Temperature
	°C	°F	°C	°F	°C	°F
8000	76	168	53	127	200	392
8005	86	187	61	142	200	392
8010	102	216	77	171	200	392
8015	115	239	89	192	200	392
8020	130	266	103	217	200	392
8025	136	277	111	232	200	392
8030	145	293	118	244	200	392
8035	150	302	123	253	200	392