BBRF750-2

Series:	PolySwitch®
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Type:	Polymeric
Voltage - Max:	99V
Current - Max:	20A
Current - Hold (Ih) (Max):	750mA
Current - Trip (It):	1.5A
Time to Trip:	60s
Resistance - Initial (Ri) (Min):	400 mOhms
Resistance - Post Trip (R1) (Max):	1.2 Ohms
Operating Temperature:	--
Ratings:	--
Mounting Type:	Through Hole
Package / Case:	Radial, Disc
Size / Dimension:	--
Height - Seated (Max):	--
Thickness (Max):	--
Lead Spacing:	--
Approvals:	--

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PTC Resettable FusesPTC Resettable Fuses, or Positive Temperature Coefficient Resettable Fuses, are some of the most commonly used electrical protection devices. They have become the standard for many applications, from large industrial applications to consumer electronics due to their excellent protection characteristics and wide range of ratings and sizes.The BBRF750-2 is one of the most popular types of PTC Resettable Fuses used in the market today. It is a self-resetting fuse with a high current-sensing on-off switch with trip-free electronic operation, working up to 30A current rating. It is surface-mounted on a PC board, and is RoHS compliant, meaning that it satisfies the environmental requirements set by the European Union's Restriction of Hazardous Substances directive.Despite providing excellent over-current and over-temperature protection, the low profile and small design of the BBRF750-2 makes it ideal for use in space-constrained applications. Applications of BBRF750-2 fuse can be found in 5V, 15V, 24V and 48V power supplies, DC/DC converters, as well as solar and wind energy applications. In automotive applications, is is used for circuit breakers and low-current fuses.When it comes to working principle, PTC Resettable Fuses, such as the BBRF750-2, operates through a thermal mechanism. It carries out its current-sensing and on-off switching function by the application of heat generated by higher-than-normal current passing through the resistor. This heat is then applied to a movable contact, which then causes the resistor temperature to rise. This causes the contact to move off the resistor when the current becomes too high. Once current is cut off, the contact will then move back onto the resistor with the decrease in temperature.The excellence of BBRF750-2 PTC Resettable Fuse lies in its protection characteristics. As the current passing through the resistor increases, the contact will move off the resistor when the current reaches the rated current. This in turn limits the current to the point of operation. This cutoff point is at a preset temperature, making the fuses highly reliable as a form of protective device for electronic equipment.These low-profile, small design, BBRF750-2 PTC Resettable Fuses can be used to meet most voltage, current, and temperature ratings desired. It is UL rated, and is considered to be the ideal choice for applications that require multiple protection for over-current, over-temperature, short circuits, and over-voltage protection. The dual-poled between two resistors makes it an excellent choice for applications that require both high- and low-current protection for preventing damage from over-voltage and short circuits.The BBRF750-2 is a reliable and robust fuse that offers superior protection against over-current and short circuits. It is also highly reliable due to its thermal over-current protection mechanism. It is an ideal choice for both industrial-grade and consumer electronic applications due to its wide range of ratings and sizes. Its low profile and small design also make it an ideal choice for space-constrained applications.

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