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Microsoft word - 系列规格书lp-cw-2.doc

Polymer PTC Resettable Fuse For Battery Protection LP-CW Series Features
— Protection for NiCd/NiMH rechargeable battery packs, Li-ion /Polymer Li-ion battery Product Dimensions
Part number
Min Max Min Max Min Max Min Max Min Max Min Max
25.6 - 0.8 2.8 3.6 7.0 8.0 7.0 8.0 2.4 2.6 Thermal Derating Chart-IH(A)
Maximum ambient operating temperatures()
LP-CW110 2.0 1.7 1.4 1.2 1.1 0.8 0.6 0.5 0.3 0.2 0.1 LP-CW170 3.2 2.7 2.2 1.80 1.7 1.3 1.0 0.8 0.5 0.3 0.1 LP-CW175 3.2 2.7 2.2 1.84 1.75 1.3 1.0 0.8 0.5 0.3 0.1 LP-CW200 3.7 3.2 2.6 2.12 2.0 1.5 1.2 0.9 0.5 0.3 0.1 LP-CW210 4.1 3.5 2.9 2.26 2.1 1.6 1.3 1.0 0.7 0.4 0.1 LP-CW240 4.4 3.7 3.1 2.54 2.4 1.8 1.5 1.2 0.9 0.5 0.1 Typical Time-to-Trip Charts at 25
Electrical Characteristic
Part number
(A) (A) (V) (A)
(Ω) (Ω) (Ω)
LP-CW200 2.0 4.7 16 100 0.9 10.0 5.0 0.022 0.039 0.078 LP-CW210 2.1 4.7 16 100 1.2 10.0 5.0 0.018 0.030 0.060 LP-CW240 2.4 5.9 16 100 1.2 12.0 5.0 0.014 0.026 0.052 Marking System
Part Numbering System
LP-CW 210 S N D U F -2
Test Procedures And Requirements
Test Conditions
Accept/Reject Criteria
Physical Characteristics and Environmental Specifications
Physical Characteristics
0.125mm nominal thickness,quarter-hard nickel Environmental Specifications
Test Conditions
Electrical Specifications:
IH=Hold current: maximum current at which the device will not trip at 25℃ still air.
IT=Trip current: minimum current at which the device will always trip at 25℃ still air.
Vmax=Maximum voltage device can withstand without damage at rated current.
Imax=Maximum fault current device can withstand without damage at rated voltage.
Ttrip=Maximum time to trip(s) at assigned current.
Pd=Typical power dissipation: typical amount of power dissipated by the device when in state air environment.
Rmin=Minimum device resistance at 25℃ prior to tripping.
Rmax=Maximum device resistance at 25℃ prior to tripping.
Packaging and Storage
The maximum ambient temperature shall not exceed 40℃. Storage temperatures higher than 40℃ could result in the deformation of packaging materials. The maximum relative humidity recommended for storage is 70%. High humidity with high temperature can accelerate the oxidation of the solder plating on the termination and reduce the solderability of the components. Sealed plastic bags with desiccant shall be used to reduce the oxidation of the termination and shall only be opened prior to use. The products shall not be stored in areas where harmful gases containing sulfur or chlorine are present. Warning:
PPTC devices are intended for protection against occasional over-current or over-temperature fault conditions, and should
not be used when repeated fault conditions are anticipated. Operation beyond maximum ratings or improper use may
result in device damage and possible electrical arcing and flame.
The specification is intended to present application, product and technical data to assist the user in selecting PPTC circuit
production devices. However, users should independently evaluate and test the suitability of each product. Wayon makes
no warranties as to the accuracy or completeness of the information and disclaims any liability resulting from its use.
Wayon’s only obligations are those in the Wayon Standard Terms and Conditions of Sale and in no case will Wayon be
liable for any incidental, indirect, or consequential damages arising from the sale, resale, or misuse of its products. Wayon
reserves the right to change or update, without notice, any information contained in this specification.


Appendix a pages 335-336

APPENDIX History of pesticides Biblical armies salt and ash the fields of the conquered; first reported use ofHomer refers to sulfur used in fumigation and other forms of pest control. The Romans apply hellebore for the control of rats, mice and insects. Virgil reports seed treatment with “nitre and amurca.”Pliny the Elder reports pest control practices from Greek literature of thep

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