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
| Model | Dimensions(mm) | Lead material | Shape |
| A(max) | B(max) | C(max) | D(typ) | Tinned matel(mm) | Fig |
| JK250-020U | 7.4 | 12.7 | 4.5 | 5.1 | 22AWG/Φ0.6 | 1/2 |
| JK250-030U | 7.4 | 12.7 | 4.5 | 5.1 | 22AWG/Φ0.6 | 1/2 |
| JK250-040U | 7.4 | 12.7 | 4.5 | 5.1 | 22AWG/Φ0.6 | 1/2 |
| JK250-050U | 7.4 | 12.7 | 4.5 | 5.1 | 22AWG/Φ0.6 | 1/2 |
| JK250-060U | 7.4 | 12.7 | 4.5 | 5.1 | 22AWG/Φ0.6 | 1/2 |
| JK250-080U | 7.4 | 12.7 | 4.5 | 5.1 | 22AWG/Φ0.6 | 2 |
| JK250-090U | 7.4 | 12.7 | 4.5 | 5.1 | 22AWG/Φ0.6 | 2 |
| JK250-100U | 7.8 | 12.6 | 4.5 | 5.1 | 22AWG/Φ0.6 | 1 |
| JK250-110U | 7.0 | 12.6 | 4.5 | 5.1 | 22AWG/Φ0.6 | 4 |
| JK250-120U | 7.0 | 12.6 | 4.5 | 5.1 | 22AWG/Φ0.6 | 4 |
| JK250-145U | 7.0 | 12.6 | 4.5 | 5.1 | 22AWG/Φ0.6 | 4 |
| JK250-180T | 10.2 | 14.5 | 3.8 | 5.1 | 22AWG/Φ0.6 | 2 |
| JK250-180U | 9.0 | 11.0 | 4.5 | 5.1 | 22AWG/Φ0.6 | 4 |
| JK250-200U | 12.0 | 17.0 | 4.5 | 5.1 | 22AWG/Φ0.6 | 3 |
| JK250-400U | 12.0 | 17.0 | 4.5 | 5.1 | 22AWG/Φ0.6 | 3 |
| JK250-600U | 12.0 | 17.0 | 4.5 | 5.1 | 22AWG/Φ0.6 | 3 |
| JK250-800U | 20.0 | 22.5 | 4.5 | 5.1 | 20 AWG/Φ0.8 | 3 |
| JK250-1000U | 20 | 22.5 | 4.5 | 5.1 | 20 AWG/Φ0.8 | 3 |
| JK250-1200U | 22 | 28 | 4.5 | 5.1 | 20 AWG/Φ0.8 | 3 |
| JK250-1500U | 25 | 30 | 4.5 | 5.1 | 20 AWG/Φ0.8 | 3 |
| JK250-2000U | 26 | 32 | 4.5 | 10.2 | 20 AWG/Φ0.8 | 3 |
Note: ① Dimensions A, B, C is the maximum size, D values are
typical tolerance of ± 0.75mm.
Thermal Derating Chart-IH(A)
Model | Maximum ambient operating temperatures(℃) |
| -40℃ | -20℃ | 0℃ | 25℃ | 30℃ | 40℃ | 50℃ | 60℃ | 70℃ | 85℃ |
| JK-250 series | 148% | 132% | 117% | 100% | 91% | 85% | 77% | 68% | 61% | 45% |
Electrical Characteristic
Model | Ihold (mA) |
Itrip(mA) | Vmax interrupt (V) | Imax (A) | Pd max (W) | Maximum Time to Trip | Resistance(Ω) |
| Current(A) | Time(S) | Rmin- Rmax |
| JK250-020U | 20 | 50 | 250 | 3 | 1.0 | 0.5 | 0.5 | 50-160 |
| JK250-030U | 30 | 70 | 250 | 3 | 1.0 | 0.5 | 0.5 | 40-120 |
| JK250-040U | 40 | 80 | 250 | 3 | 1.0 | 0.5 | 1.5 | 30-60 |
| JK250-050U | 50 | 100 | 250 | 3 | 1.0 | 0.5 | 2 | 25-50 |
| JK250-060U | 60 | 120 | 250 | 3 | 1.0 | 0.5 | 2 | 20-60 |
| JK250-080U | 80 | 160 | 250 | 3 | 1.0 | 1 | 0.5 | 12-22 |
| JK250-090U | 90 | 180 | 250 | 3 | 1.0 | 1 | 0.8 | 10-20 |
| JK250-100U | 100 | 200 | 250 | 3 | 1.0 | 1 | 1 | 10-20 |
| JK250-110U | 110 | 220 | 250 | 3 | 1.0 | 1 | 2.0 | 6-12 |
| JK250-120U | 120 | 240 | 250 | 3 | 1.0 | 1 | 2.0 | 6-12 |
| JK250-145U | 145 | 290 | 250 | 3 | 1.0 | 1 | 5.0 | 3.5-6.5 |
| JK250-180T | 180 | 650 | 250 | 3 | 1.8 | 3 | 3.0 | 1.0-2.2 |
| JK250-180U | 180 | 650 | 250 | 3 | 1.8 | 3 | 1.5 | 2.0-4.0 |
| JK250-200U | 200 | 400 | 250 | 5 | 2.4 | 3 | 5 | 3-6 |
| JK250-400U | 400 | 800 | 250 | 5 | 2.8 | 3 | 8 | 1-3 |
| JK250-600U | 600 | 1200 | 250 | 5 | 3.2 | 3 | 12 | 0.6-2.0 |
| JK250-800U | 800 | 1600 | 250 | 5 | 3.6 | 4 | 18 | 0.4-1.0 |
| JK250-1000U | 1000 | 2000 | 250 | 7 | 3.6 | 5 | 20 | 0.3-0.8 |
| JK250-1200U | 1200 | 2400 | 250 | 7 | 3.6 | 6 | 20 | 0.2-0.8 |
| JK250-1500U | 1500 | 3000 | 250 | 7 | 4.8 | 7.5 | 20 | 0.2-0.6 |
| JK250-2000U | 2000 | 4000 | 250 | 10 | 4.8 | 10 | 20 | 0.2-0.4 |
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 nalways at
25℃ still air.
Vmax=Maximum voltage device can withstand without damage at rated
current.
Imax=Maximum fault current device can withstand tithout damage at rated
voltage.
Ttrip=Maximum time to trip(s) at assigned current.
Pd=Typical power dissipation:typical amount of power dissipated by
the decice when in state air environment.
Rmin=Minimum device resistance at 25℃ prior to tripping.
Rmax=Maximum device resistance at 25℃ prior to tripping.
Environmental Specifications
| Test | Conditions | Resistance change |
| Passive aging | +85℃,1000hrs | ±8% typical |
| Humidity aging | +85℃,85%R.H.1000hrs | ±8% typical |
| Thermal shock | +125℃ to -55℃,10times | ±12% typical |
| Resistance to solvent | MIL-STD-202,Method 215 | No change |
| Vibration | MIL-STD-202,Method 201 | No change |
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.
