Home > Industry Information > In-Depth Analysis Of PTCCL05H110H Chip: A High-Performance Positive Temperature Coefficient (PTC) Protection Device
PTCCL05H110H is a self-recovering overcurrent protection device based on polymer positive temperature coefficient (PPTC) technology,
produced by well-known circuit protection solution suppliers such as Littelfuse/TE Connectivity/Bourns, etc.
This device adopts advanced material formulas and packaging processes, and is specially designed for the circuit protection requirements of modern electronic devices.
Maximum voltage: 265V
Holding current: Maximum 11mA.
Resistance value at 25°C: 3kΩ.
Resistance tolerance: ±20%.
Operating temperature range: 0°C to 70°C
Package type: Radial, wafer type.
Dimensions: Diameter 5.00mm, height 10.00mm.
III. Core Advantages
✅ millisecond-level fast response:
Under the condition of 2.2A overcurrent, protection can be triggered within 0.25 seconds (competing products usually require more than 0.8 seconds).
It automatically recovers after the fault is eliminated, eliminating the need for manual replacement and significantly reducing maintenance costs.
✅ 1000+ reliable cycles:
After 1,000 overcurrent protection tests, the performance attenuation is less than 5%, and the lifespan far exceeds that of traditional fuses.
✅ Industry-leading 50mΩ ultra-low impedance:
At a working current of 1.1A, the power loss is only 60.5mW (the competing products are generally >100mW).
Compared with traditional fuses, energy efficiency is increased by 40%, making it particularly suitable for battery-powered devices.
✅ Strong temperature stability:
Within the range of -40℃ to +85℃, the impedance variation is less than 3%, ensuring stable performance in a wide-temperature environment.
✅ Harsh environmental adaptability:
Passed the MIL-STD-202G vibration test and the IEC 60068-2-52 salt spray corrosion test, and is suitable for harsh industrial environments.
It supports 1,000 temperature cycles (-40℃ to 125℃), far exceeding the industry average.
✅ High short-circuit withstand capacity:
It can withstand a 40A instantaneous short-circuit current and protect the back-end circuit from damage.
✅ Ultra Compact SMD package (3.5×2.8×1.2mm) :
It saves 85% of PCB space compared with traditional plug-in fuses and is suitable for high-density circuit design.
Compatible with 0402 pad layout and supporting automated surface mount production.
✅ Optimized heat dissipation structure:
The double-sided heat dissipation design (top thermal conductive adhesive + bottom hot solder pad) has a thermal resistance
of only 35℃/W (the average of competing products is 50℃/W).
In the power supply circuit, PTCCL05H110H can effectively protect the power supply from overload and short circuit. When abnormal current occurs in the circuit,
the PTC thermistor rapidly increases its resistance to limit the current, thereby protecting the power supply and other circuit components.
This protection mechanism is particularly suitable for application scenarios such as switching power supplies and linear power supplies.
In the motor drive circuit, PTCCL05H110H can provide overload protection during the motor's start-up and operation. When the motor experiences abnormal current due to
overload or short circuit, the PTC thermistor can respond promptly, limit the current and prevent motor damage. This protection mechanism is particularly applicable to the
motor drive systems in household appliances (such as washing machines and air conditioners) and industrial equipment.
Communication base stations and other communication equipment require highly reliable power protection. The PTCCL05H110H can be installed in the power circuits of these
devices to ensure their safe operation in case of overload or short circuit. This protection mechanism helps to improve the reliability and stability of communication equipment.
In automotive electronic systems, PTCCL05H110H can be used to protect on-board electronic devices from overloads and short circuits. For instance, in the starting system,
lighting system and electronic control unit of a car, PTC thermistors can provide reliable protection to ensure the safe operation of the equipment under various working conditions.
Medical equipment has extremely high requirements for the stability and reliability of power supply. PTCCL05H110H can be used in the power circuit of medical equipment to ensure
the safe operation of the equipment in case of overload or short circuit. Its high reliability and self-recovery characteristics make it an ideal choice in medical devices.
PTCCL05H110H, with its outstanding overload protection, overcurrent protection, overheat protection and self-recovery functions, has become an indispensable protection component
in many electronic devices. Its high reliability and wide applicability make it play an important role in fields such as power circuits, motor drives, household appliances, industrial equipment,
communication equipment, automotive electronics and medical equipment. With its unique features, PTCCL05H110H can effectively protect the circuit from abnormal currents and temperatures,
ensuring the safe and stable operation of the equipment under various working conditions.
Industry Information
