tyco electronics corporation has developed the next generation in its popular line of polyswitch?pptc (polymeric positive temperature coefficient) resettable strap devices. the VLR230 and VLR170 devices provide very low series resistance and enhanced thermal protection for lithium-ion (li-ion) and nickel metal hydride (nimh) rechargeable battery packs typically used in cell phones, laptops, radios, camcorders, and other portable equipment. VLR devices are well suited for single-cell li-ion applications. the VLR device's narrow, low-profile form factor allows it to be welded directly onto battery cells, thus saving space and added installation costs. VLR devices lower trip temperature (~5? lower compared to the vtp strap devices) and fast time- to-trip (typically 2.4 seconds or better at 10a) provide enhanced protection for rechargeable battery applications, while allowing longer battery pack life and extended equipment operation time. VLR series polyswitch battery protectors target applications: mobile phone battery packs cordless phone battery packs mobile radio packs computer battery packs camcorder battery packs features: broadest range of resettable fuses available in the industry current rating of 100a voltage rating of 12v agency recognition pending industry fastest time-to-trip industry lowest resistance devices benefits: provides overcurrent and overtemperature protection ideal protection for single cell li-ion battery packs compatible with high volume electronics assembly assists in meeting regulatory requirements preliminary data electrical rating voltage: 12 v max current: 100a max electrical characteristics part # hold hold trip hold trip hold trip a typ max min max min max typ max VLR170 1.7 2.4 5.6 1.7 4.1 0.7 1.9 8.5 5.0 0.018 0.032 0.018 0.064 - 1.4 VLR230 2.3 3.4 6.6 2.3 5.0 0.9 2.3 10.0 2.4 5.0 0.012 0.018 0.012 0.036 1.4 2.5 new VLR low resistance polyswitch resettable strap devices enhance thermal protection for li-ion and nimh battery packs reference documents: ps300 precedence: this specification takes precedence over documents referenced herein. effectivity: reference documents shall be the issue in effect on the date of invitation for bid. caution: operation beyond the rated voltage or current may result in rupture, electrical arcing or flame. amps 25?c amps at 0?c amps at 25?c amps at 60?c seconds at 25?c ohms at 25?c ohms at 25?c watts at 25?c, 12v i hold current trip limits time to trip reference resistance one-hour post-trip resistance tripped-state power dissipation
marking: manufacturer's mark part identification (r17, VLR170 and r23, VLR230) lot identification abcd e fr min max min max min max min max min max min max min max VLR170 mm: 20.8 23.2 3.5 3.9 -- 0.8 4.5 6.5 4.5 6.5 2.4 2.6 VLR170 in*: (0.82) (0.91) (0.14) (0.15) -- (0.03) (0.18) (0.26) (0.18) (0.26) (0.09) (0.10) VLR230 mm: 20.9 23.1 4.9 5.3 -- 0.8 4.1 5.8 4.1 5.8 3.9 4.1 1.0 VLR230 in*: (0.82) (0.91) (0.19) (0.21) -- (0.03) (0.16) (0.23) (0.16) (0.23) (0.15) (0.16) (0.039) www.circuitprotection.com worldwide headquarters 308 constitution drive menlo park, ca 94025-1164 tel (800) 227-7040 (650) 361-6900 fax (650) 361-2508 polyswitch, and VLR are registered trademarks of tyco electronics corporation. all information, including illustrations, is believed to be reliable. users, however, should independently evaluate the suitabi lity of each product for their application. tyco electronics makes no warranties as to the accuracy or completeness of the information, and disclaims any liab ility regarding its use. tyco electronics only obligations are those in the company s standard terms and conditions of sale for this product, and in no case will tyco electronics be liable for any incidental, indirect, or consequential damages arising from the sale, resale, use, or misuse of t he product. specifications are subject to change without notice. in addition, tyco electronics reserves the right to make changes?ithout notification to buyer?o materials or processing that do not affect compliance with any applicable specification. 2000 tyco electronics corporation printed in usa rcp0015.0800.1000 VLR devices nanosmd devices typical time to trip characteristics thermal derating curve fault current (amps) time-to-trip (seconds) 0.001 0.01 0.1 1 10 100 0 10 100 VLR 230 VLR 170 percent of hold/trip current temperature ( c) 160 140 120 100 80 60 40 20 10 20 30 40 50 60 70 0.0 0 *rounded off approximation dimensions (millimeters/inches) r17 b a d e c f r orientation mark leads: nickel: 0.125 mm nom. tape: polyester
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