Products Description
A 16V PPTC Polyswitch Resettable Fuse, commonly referred to as a polyswitch, is an electronic component designed to protect electrical circuits from overcurrent conditions. It operates by utilizing a polymer-based material with a positive temperature coefficient of resistance. This means that as the current flowing through the device increases, the temperature of the polymer also rises, causing its resistance to increase.
Features
Radial Leaded Devices
Cured, flame retardant epoxy polymer insulating material meets UL 94V-0 requirements
Bulk Package, or tape and reel available on most models
Breakdown of PPTC Fuse functioning
1. Normal Operating State: When the circuit is in its normal operating state and the current is within a safe range, the PPTC fuse exhibits a low resistance. This allows current to flow through it without significant voltage drop or heat generation.
2. Overcurrent Condition: If an overcurrent event occurs, such as a short circuit or a current surge due to a fault, the current passing through the PPTC fuse increases significantly. As the current rises, the temperature of the polymer in the PPTC rises as well.
3. Transition Phase: As the polymer's temperature increases, its resistance begins to rise. This rise in resistance acts as a self-regulating mechanism. The PPTC fuse enters a transitional state where its resistance is rapidly increasing. This sudden increase in resistance causes a significant voltage drop across the PPTC, which helps limit the current flowing through the circuit.
4. Current Limiting: The rising resistance and voltage drop across the PPTC fuse effectively limit the current to a safe level. This helps protect the circuit and connected components from the damaging effects of overcurrent. The PPTC fuse effectively acts as a self-resetting circuit breaker.
5. Resetting: Once the overcurrent condition is removed or the fault is cleared, the PPTC fuse starts to cool down. As the temperature decreases, the polymer's resistance gradually returns to its low initial state. This allows the circuit to be restored to normal operation.
Product Data
| Item name: | 16V PPTC Polyswitch Resettable Fuse | Rating Current: | 0.05A-14A |
| Rating Voltage: | 16V DC | Breaking Capacity: | Low |
| Type: | Radial | Usage: | Electrical PTC, PPTC Resettable Fuse |
| Reset Type: | Auto Reset | Application: | Communication System |
| Package: | Standard Package | Safety Standards: | RoHS, Reach, HF compliance |
Products Dimension
Characteristics between ambient temperature and working current
| P/N | Operating Ambient Temperature | ||||||||
| -40℃ | -20℃ | 0℃ | 25℃ | 40℃ | 50℃ | 60℃ | 70℃ | 85℃ | |
| TRA005 | 0.08 | 0.07 | 0.06 | 0.05 | 0.04 | 0.04 | 0.03 | 0.03 | 0.02 |
| TRA010 | 0.17 | 0.15 | 0.13 | 0.10 | 0.07 | 0.06 | 0.05 | 0.04 | 0.03 |
| TRA017 | 0.27 | 0.24 | 0.21 | 0.17 | 0.14 | 0.12 | 0.09 | 0.07 | 0.05 |
| TRA020 | 0.32 | 0.28 | 0.25 | 0.20 | 0.16 | 0.14 | 0.12 | 0.10 | 0.07 |
| TRA025 | 0.40 | 0.34 | 0.29 | 0.25 | 0.20 | 0.17 | 0.15 | 0.13 | 0.09 |
| TRA030 | 0.47 | 0.41 | 0.36 | 0.30 | 0.24 | 0.21 | 0.18 | 0.14 | 0.10 |
| TRA040 | 0.62 | 0.53 | 0.46 | 0.40 | 0.31 | 0.28 | 0.23 | 0.20 | 0.16 |
| TRA050 | 0.77 | 0.67 | 0.58 | 0.50 | 0.40 | 0.34 | 0.30 | 0.25 | 0.19 |
| TRA065 | 1.00 | 0.87 | 0.75 | 0.65 | 0.51 | 0.45 | 0.40 | 0.34 | 0.22 |
| TRA075 | 1.04 | 0.94 | 0.83 | 0.75 | 0.61 | 0.54 | 0.46 | 0.41 | 0.29 |
| TRA090 | 1.39 | 1.22 | 1.07 | 0.90 | 0.72 | 0.63 | 0.53 | 0.45 | 0.33 |
| TRA110 | 1.61 | 1.43 | 1.24 | 1.10 | 0.89 | 0.83 | 0.74 | 0.66 | 0.56 |
| TRA120 | 1.76 | 1.56 | 1.35 | 1.20 | 0.97 | 0.91 | 0.81 | 0.72 | 0.61 |
| TRA135 | 1.98 | 1.75 | 1.54 | 1.35 | 1.08 | 1.01 | 0.89 | 0.78 | 0.67 |
| TRA160 | 2.30 | 2.06 | 1.82 | 1.60 | 1.33 | 1.20 | 1.05 | 0.96 | 0.78 |
| TRA185 | 2.68 | 2.41 | 2.13 | 1.85 | 1.53 | 1.40 | 1.23 | 1.13 | 0.93 |
| TRA200 | 3.14 | 2.70 | 2.28 | 2.00 | 1.80 | 1.72 | 1.34 | 1.23 | 1.03 |
| TRA250 | 3.63 | 3.25 | 2.88 | 2.50 | 2.08 | 1.93 | 1.70 | 1.53 | 1.30 |
| TRA300 | 4.34 | 3.87 | 3.42 | 3.00 | 2.49 | 2.28 | 2.02 | 1.82 | 1.52 |
| TRA400 | 5.78 | 5.15 | 4.58 | 4.00 | 3.28 | 3.04 | 2.68 | 2.42 | 2.07 |
| TRA500 | 7.23 | 6.44 | 5.73 | 5.00 | 4.10 | 3.80 | 3.35 | 3.03 | 2.59 |
| TRA600 | 10.12 | 9.01 | 8.02 | 7.00 | 5.74 | 5.32 | 5.25 | 4.24 | 3.62 |
| TRA700 | 10.12 | 9.01 | 8.02 | 7.00 | 5.74 | 5.32 | 5.25 | 4.24 | 3.62 |
| TRA800 | 11.56 | 10.30 | 9.16 | 8.00 | 6.56 | 6.08 | 5.36 | 4.84 | 4.14 |
| TRA900 | 13.00 | 11.58 | 10.30 | 9.00 | 7.38 | 6.84 | 5.36 | 4.84 | 4.14 |
| TRA1000 | 14.45 | 12.88 | 11.45 | 10.00 | 8.20 | 7.60 | 6.70 | 6.05 | 5.18 |
| TRA1100 | 15.89 | 14.16 | 12.60 | 11.0 | 9.02 | 8.36 | 7.37 | 6.66 | 5.69 |
| TRA1200 | 17.34 | 15.45 | 13.74 | 12.00 | 9.84 | 9.12 | 8.04 | 7.26 | 6.21 |
| TRA1300 | 18.79 | 16.74 | 14.89 | 13.00 | 12.66 | 9.88 | 8.71 | 7.87 | 6.73 |
| TRA1400 | 20.23 | 18.03 | 16.03 | 14.00 | 15.31 | 10.64 | 9.38 | 8.47 | 7.25 |
Application
1. Consumer Electronics; 2. Power Adapters and Chargers; 3. Printed Circuit Boards (PCBs); 4. Automotive Electronics; 5. Telecommunications Equipment; 6. Industrial Control Systems; 7. Medical Devices; 8. Power Banks; 9. LED Lighting; 10. Consumer Appliances; 11. Industrial Equipment.
about us
Founded in 2011, Dongguan Senreach Electronics Co., Ltd. is a professional circuit protection component manufacturer and solution supplier in China. We have 20 years of experience in manufacturing fuses, fuse holders, circuit breakers, thermal protectors, ntc sensors, etc.
We have a variety of advanced manufacturing and testing equipment. With the adoption of excellent quality management system, we make sure that each of our components are safe and stable. Senreach has passed ISO9001:2000 quality management system certification, and its products meet international standards including UL, UR, CSA, BSI, CUL, VDE, TUV, PSE, CE, CCC, ROHS certification etc.
We specialize in developing, manufacturing and selling over current, over temperature and over voltage circuit protection components of various properties, types and specifications. Products are widely used in consumer electronics, automobiles, ships, communication devices, power supplies, new energy, photovoltaic and other fields.
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We have a strong and complete suuply chain from raw materials to final packing which enables us to control the production cost at every step.
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