Bourns is offering Multifuse polymeric positive temperature coefficient (PPTC) strap components designed to enhance the safety and performance of rechargeable battery packs. The Multifuse product line offers battery pack manufacturers a reliable and cost effective method of protecting the battery pack from external shorts and abusive charging.
The MF-SVS product family offers pack designers and manufacturers a strap device with a typical initial resistance as low as 14 mOhm, providing an immediate minimum increase in talk time capacity of up to 6%. A key advantage of this product is that it is designed to trip at the optimum switching temperature of 85°C, protecting lithium or Ni-MH chemistry cells from overheating and ensuring not only that the pack is more than adequately protected, but that it does not suffer from nuisance switching. The MF-SVS family is now available with a width as narrow as 3,6 mm for slim designs.
The MF-VSN for ultra-slim products such as the new generation Li-ion prismatic cells. The VSN products are rated to a maximum voltage of 12 V, maximum current of 100 A and consists of two main devices: the MF-VS210N designed for GSM battery packs, and the MF-VS170N designed for lower pulse current applications, both with a maximum width of 3,6 mm.
The MF-VS family has been designed for the protection of battery packs rated with a maximum voltage of 16 V and a maximum current of 100 A. A hold current of 2,4 A makes the product family ideal for use inside battery packs designed for PDAs, portable computers and cellphones. Resistance is as low as 20 mOhm.
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