Resistance - Initial (Ri) (Min):	100 mOhms
Approvals:	cURus, TUV
Lead Spacing:	0.201" (5.10mm)
Thickness (Max):	--
Height - Seated (Max):	0.449" (11.40mm)
Size / Dimension:	0.272" Dia x 0.118" W (6.90mm x 3.00mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	230 mOhms
Series:	POLY-FUSE®, USBR
Time to Trip:	400ms
Current - Trip (It):	1.3A
Current - Hold (Ih) (Max):	750mA
Current - Max:	40A
Voltage - Max:	6V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

PTC Resettable Fuses, also known as Polymeric Positive Temperature Coefficient (PPTC) Resettable Fuses, are the latest, advanced form of protection technology employed to protect electrical and electronic circuits from component damage due to improper current levels. These fuses are a type of self-resetting over-current protection device, which functions by dissipating energy and heat, and then resetting the circuit back to normal afterwards. This technology offers improved circuit protection, higher reliability, and a more cost-effective alternative to traditional fuses. The 06R075BU is a specific type of PTC Resettable Fuse with unique characteristics and application fields.

06R075BU Characteristics

The 06R075BU Resettable Fuse is a radial leaded device designed to provide overcurrent protection for consumer electronics, automotive, and telecom applications. It is a high current Type 2 fuse, rated for up to 75 Amp, with a hold-current of 50 Amp and a trip-current of 65 Amp. It has an insulation rating of FR-4, and is UL recognized and VDE tested. The operating temperature range for this model is -55°C to +125°C, and its voltage rating is 500V (AC/DC).The 06R075BU Resettable Fuse also has several unique features, such as a snap-acting response time (typically 30 milliseconds), a polarized design (positive and negative terminals for proper installation), and a low profile. It is also RoHS and REACH compliant, and is UL listed to UL 60950-1, UL60950-1.1, and UL1958.

06R075BU Application Field

Because of its ability to self-reset, the 06R075BU PTC Resettable Fuse is suitable for a wide variety of applications. It can be used as a means of short circuit protection, over-current protection, or as a standby-circuit breaker in various consumer electronics, automotive, and telecom applications. It is also suitable for industrial, computer, audio-visual, and lighting equipment.The 06R075BU Resettable Fuse is particularly well-suited for use in electric vehicle power systems, as it has a high current rating and is very reliable. The short response time, low temperature coefficient, and built-in over-voltage protection make it an ideal choice for high-voltage applications such as Li-Ion battery packs. It is also suitable for use in low-voltage electronic devices, as its low profile and high temperature resistance makes it ideal for use in tight quarters.

06R075BU Working Principle

The working principle of the 06R075BU Resettable Fuse is based on the concept of polymeric Positive Temperature Coefficient (PPTC). This type of technology relies on the use of an inserted stack, with a polymeric material between two electrodes. When the current level is too high, the polymer material will heat up and expand, which causes a reduction in the resistance. Once the current level drops to a safe level, the polymer material will cool down, and thus return to its original state.The 06R075BU PTC Resettable Fuse is designed with a specific current rating and a low resistance value. When the current passes through the fuse, it will create a magnetic field, affecting the resistance of the polymeric material. If the field is too strong, the heat generated will expand the material and reduce its resistance, hence triggering the overcurrent protection. Once the current shuts off, the material will cool down and restore its original resistance value, resetting the circuit. This action will prevent the circuit from being damaged, without requiring any additional intervention from the user.

Conclusion

The 06R075BU PTC Resettable Fuse is a reliable, cost-effective, and high-performance solution for over-current protection. Its fast response time, low temperature coefficient, and built-in over-voltage protection make it an ideal choice for use in electric vehicles, consumer electronics, automotive, and telecom applications. The fused device is also UL recognized and VDE tested, and is RoHS and REACH compliant, the additional credentials make it a well-suited solution for providing reliable short-circuit protection for a variety of different industries.

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