Polymer PTC Resettable Fuse JK250 Series

Features:

• Radial leadedDevices
• Cured,flame retardant epoxy polymer insulating material meetsUL94V-0
• Bulk packaging,or tape and reel available on mostmodels
• Agency recognition:UL,CSA,TUV
• Rohs compliant andlead-free

Product Dimensions

Unit :mm

JK250 Series

Note: ① Dimensions A, B, C is the maximum size, D values are typical tolerance of ± 0.75mm.

Thermal Derating Chart-IH(A)

Electrical Characteristic

I_H=Hold current:maximum current at which the device will not trip at 25℃ still air.

I_T=Trip current:minimum current at which the device will nalways at 25℃ still air.

V_max=Maximum voltage device can withstand without damage at rated current.

I_max=Maximum fault current device can withstand tithout damage at rated voltage.

T_trip=Maximum time to trip(s) at assigned current.

P_d=Typical power dissipation:typical amount of power dissipated by the decice when in state air environment.

R_min=Minimum device resistance at 25℃ prior to tripping.

R_max=Maximum device resistance at 25℃ prior to tripping.

Environmental Specifications

Solder reflow conditions

Wave Soldering:

Soldering Temperature:260℃~270℃ Soldering Time:≤3sec.

Soldering Position: Resettable fuse wire and the bottom ≥ 6mm.

Manual soldering:

Soldering Temperature:250℃~280℃ Soldering Time: ≤3sec.

Soldering Position: Resettable fuse wire and the bottom ≥ 6mm.

Packaging and Storage
Packaging

JK250～020U～JK250-180U 1000Pcs/Bag

JK250-200U～JK250-600U 500Pcs/Bag

JK250-800U～JK250-2000U 200Pcs/Bag

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 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 teduce 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 sulfu of chlorine are present.
Warning:

Please read this specification before use the product.

Using of this product must be sure to follow the requirement of this specification,operation beyond the specified maximum ratings or improper use may result in damage and possible electrical arcing and flame.

PPTC resettable fuses are intended for occasional over current protection. Application for repeated over current condition or prolonged trip are not anticipated.

Please avoid contact of PPTC resettable fuses with chemical solvent. Prolonged contact will damage the device performance. You are requested not to use our product deviating from the agreed specifications.