◇ JKH30-050～JKH16-300 1000Pcs/Bag
◆ JKH16-400～JKH16-900 500 Pcs/Bag
◇ JKH16-1000～JKH16-1400 200 Pcs/Bag
◆ RoHS Compliant ＆ Halogen Free
◇Radial-leaded Devices
◆ Cured，flame retardant epoxy polymer insulating material meets UL94V-0 requirements
◇ Operation Current: 0.5A~14A ，Maximum Voltage: 16Vdc～30Vdc，Operating Temperature：-40℃ TO 125℃
❈ Product Video
Model | Dimensions（mm） | Lead material | Shape | |||
A(MAX) | B(MAX) | C(MAX) | D(TYP) | Tinned metal(mm) | Fig | |
JKH30-050 | 7.8 | 16.2 | 3.0 | 5.1 | 24 AWG/Φ0.5 | 1 |
JKH30-100 | 10.4 | 18.4 | 3.0 | 5.1 | 24 AWG/Φ0.5 | 1 |
JKH16-200 | 9.4 | 15.0 | 3.0 | 5.1 | 20 AWG/Φ0.8 | 2 |
JKH16-300 | 9.4 | 15.0 | 3.0 | 5.1 | 20AWG/Φ0.8 | 2 |
JKH16-400 | 11.2 | 15.0 | 3.0 | 5.1 | 20AWG/Φ0.8 | 2 |
JKH16-500 | 11.2 | 15.0 | 3.0 | 5.1 | 20AWG/Φ0.8 | 2 |
JKH16-600 | 14.0 | 22.0 | 3.0 | 5.1 | 20AWG/Φ0.8 | 2 |
JKH16-700 | 14.0 | 22.0 | 3.0 | 5.1 | 20AWG/Φ0.8 | 2 |
JKH16-800 | 17.2 | 27.0 | 3.0 | 5.1 | 20AWG/Φ0.8 | 2 |
JKH16-900 | 17.2 | 27.0 | 3.0 | 5.1 | 20AWG/Φ0.8 | 2 |
JKH16-1000 | 22.5 | 26.0 | 3.0 | 5.1 | 20AWG/Φ0.8 | 2 |
JKH16-1100 | 22.5 | 26.0 | 3.0 | 5.1 | 20AWG/Φ0.8 | 2 |
JKH16-1300 | 24.0 | 29.0 | 3.0 | 5.1 | 20AWG/Φ0.8 | 2 |
JKH16-1400 | 24.0 | 29.0 | 3.0 | 5.1 | 20AWG/Φ0.8 | 2 |
Thermal Derating Chart-IH（A）
Model | Maximum ambient operating temperature（℃） | |||||||||
-40℃ | -20℃ | 0℃ | 25℃ | 40℃ | 50℃ | 60℃ | 70℃ | 85℃ | 125℃ | |
JKH series | 147% | 132% | 120% | 100% | 88% | 80% | 71% | 61% | 47% | 35% |
Electrical Characteristics
IH=Hold current:Maximum current at which the device will not interruptin 25℃ still air.
IT=Trip current:Minimum current at which the device from low resistance to high resistance in 25℃ still air.
VMAX=Maximum continuous voltage device can withstand without damage at rated current.
IMAX=Maximum fault current device can withstand without damage at rated voltage.
Maximum Time-to-trip:Maximum time to trip at assigned current.
PD=Typical power dissipation:Typical amount of power dissipated from the device when in 25℃ still air environment.
RMIN=Minimum resistance of device at 25℃ prior to tripping.
RMAX=Maximum resistance of device at 25℃ prior to tripping.
Model | IH(A) | IT(A) | VMAX | IMAX | PD | Maximum Time-to-Trip | Resistance（mΩ） | ||
V（DC） | A | W | Current（A） | Time（S） | RMIN | RMAX | |||
JKH30-050 | 0.5 | 1.0 | 30 | 100 | 0.9 | 1.5 | 5 | 480 | 1100 |
JKH30-100 | 1 | 2.0 | 30 | 100 | 1.4 | 3 | 5 | 180 | 800 |
JKH16-200 | 2 | 4.0 | 16 | 100 | 2.2 | 6 | 5 | 45 | 110 |
JKH16-300 | 3 | 6 | 16 | 100 | 3.0 | 9 | 5 | 33 | 79 |
JKH16-400 | 4 | 8 | 16 | 100 | 3.3 | 12 | 8 | 20 | 60 |
JKH16-500 | 5 | 10 | 16 | 100 | 3.6 | 15 | 8 | 15 | 43 |
JKH16-600 | 6 | 12 | 16 | 100 | 4.1 | 18 | 8 | 13 | 32 |
JKH16-700 | 7 | 14 | 16 | 100 | 4.3 | 21 | 15 | 10 | 25 |
JKH16-800 | 8 | 16 | 16 | 100 | 4.5 | 24 | 15 | 9 | 22 |
JKH16-900 | 9 | 18 | 16 | 100 | 5.0 | 27 | 15 | 8 | 20 |
JKH16-1000 | 10 | 20 | 16 | 100 | 5.3 | 30 | 24 | 7 | 17 |
JKH16-1100 | 11 | 22 | 16 | 100 | 5.5 | 33 | 24 | 6 | 15 |
JKH16-1300 | 13 | 10 | 16 | 100 | 6.4 | 39 | 24 | 4 | 10 |
JKH16-1400 | 14 | 28 | 16 | 100 | 6.9 | 42 | 24 | 3 | 9 |
This type named as Resettable Fuse PPTC DIP JKH Series is widely used,Computers & peripherals;Motor protection;Automotive applications;General electronics,etc
PPTC overcurrent and overheat protection
The recoverable fuse element is connected in series in the circuit. Under normal circumstances, it is in a low-resistance state to ensure the normal operation of the circuit. When the circuit is short-circuited or an abnormally large current flows in, the self-heating of the component increases its impedance, limiting the current to sufficient It is small and plays the role of overcurrent protection. At the same time, when the external ambient temperature rises sharply, after the environment reaches the product switch temperature, it can play an over-temperature protection role.
Automatic recovery
When the overcurrent and overheating fault is eliminated, the recoverable fuse element automatically returns to a low resistance state. This avoids both maintenance and replacement, as well as open and closed states that can cause continuous circuit damage. The reason why the resettable fuse has the dual functions of overcurrent and overheat protection and automatic recovery is due to its special manufacturing. Recoverable fuses are made of a mixture of polymers and conductive materials. The polymer recoverable fuse is composed of a polymer resin matrix and conductive particles distributed therein. Under normal circumstances, the conductive particles form a chain-like conductive path in the resin matrix, and the polymer recoverable fuse exhibits low impedance (a). When an overcurrent occurs in the circuit, the heat generated by the large current flowing through the polymer recoverable fuse causes the polymer resin matrix to expand and cut off the chain-like conductive path formed by the conductive particles, causing the impedance of the polymer recoverable fuse to rise rapidly. High, thus protecting the circuit from overcurrent (b). After the fault is removed, the resin cools and crystallizes again, the volume shrinks, the conductive particles re-form the conductive path, and the polymer can restore the fuse to return to low impedance. Compared with traditional fuses, it has the advantages of being resettable, small in size and more solid.
Recovery time characteristics
Within a few seconds after the overcurrent condition of the JKPPTC element disappeared, the temperature of the JKPPTC element quickly dropped, and the JKPPTC element quickly returned to its low-resistance state.
External influence
1) When the ambient temperature is increased above 25 ° C, the current through the recoverable fuse will decrease rapidly.
2) 100% of the current on the line passes the recoverable fuse at an ambient temperature of 25 ° C. However, if more than twice the rated current is generated, the recoverable fuse will operate.
3) The higher the ambient temperature, the greater the current passed. The shorter the action time will be.
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