PRODUCT
Fast time-to-trip 16R300GPR Radial Leaded Through Hole PPTC PolySwitch PTC Resettable Fuse 16V 3A
positive temperature coefficient fuse
,pptc resettable fuse
Fast time-to-trip 16R300GPR Radial Leaded Through Hole PPTC PolySwitch PTC Resettable Fuse 16V 3A
Why PTC Resettable Fuse required ?
When a fuse burns out, it has to be replaced before the protected equipment can be restored into operation. Unfortunately, this isn’t always possible.
Technology advancement has provided us with an alternative&sh;a resettable fuse, or more appropriately, an automatically resetting fuse. The polymer PTC fuse tolerates the normal rated current graciously, but when the current starts increasing beyond ‘tolerable’ levels (trip current), it heats up and fights back furiously. The increased heat very quickly raises its resistance, not manifold, but by many orders of magnitude. This reduces the current to a very small level. Depending on the circuit design, this may take milliseconds to many seconds. The fuse cools down and comes back to its initial mood of tolerance, or reset, automatically. Provided the current overload has been removed, this restores equipment operation.
The PTC resettable fuse is not meant for high power. Current ratings of up to a few tens of amperes and voltage ratings of up to few tens of volts are feasible.
The ceramic PTC thermistor has similar behavior, but the resistance variation is not as fast.
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Product Dimensions & Marking (Unit: mm)
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| Style1 | Style 2 | Printing/Marking |
Typical time to trip at 25℃
Package info
| Part number | Quantity |
| TRA005-TRA400 | 1000PCS |
| TRA500-TRA800 | 500PCS |
| TRA900-TRA1400 | 200PCS |
| Tape and Reel Specifications Devices taped using EIA468–B/IEC286-2 standards. |
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Description
TRA Series Radial Leaded PTCs are designed to provide resettable overcurrent protection serving a wide
range of electronics applications. With maximum 16 volts and maximum 100-ampere short circuit rating, they offer an ideal solution for USB protection.
16V Operating voltages
Fast time–to–trip
Meets all USB protection requirements
RoHS compliant, Lead-Free and Halogen-Free
• Any USB application
• General Electronics
| Pre-Heating Zone |
Refer to the condition recommended by the flux manufacturer. Max. ramping rate should not exceed 4°C/ Sec. |
| Soldering Zone |
Max. solder temperature should not exceed 260°C Time within 5°C of actual Max. solder temperature within 3 – 5 seconds Total time from 25°C room to Max. solder temperature within 5 minutes including Pre-Heating time |
| Cooling Zone | Cooling by natural convection in air. Max. ramping down rate should not exceed 6°C/Sec. |
Physical Specifications
| Lead Material |
2.5A: Tin-plated Copper clad Steel 3.0 - 14.0A: Tin-plated Copper |
| Soldering Characteristics | Solderability per MIL–STD–202, Method 208 |
| Insulating Material | Cured, flame retardant epoxy polymer meets UL 94V-0 requirements |
| Device Labeling | See marking photo |
Environmental Specifications
| Operating/Storage Temperature | -40°C to +85°C |
| Maximum Device Surface Temperature in Tripped State | 125°C |
| Passive Aging |
+85°C, 1000 hours -/+ 5% typical resistance change |
| Humidity Aging |
+85°C, 85% R.H., 1000 hours -/+ 5% typical resistance change |
| Thermal Shock |
+85°C to -40°C 10 times -/+ 5% typical resistance change |
| Solvent Resistance | MIL–STD–202, Method 215 No change |
| Moisture Resistance Level | Level 1, J–STD–020 |
