Allicdata Part #: | TSM600-400F-2TR-ND |
Manufacturer Part#: |
TSM600-400F-2 |
Price: | $ 0.00 |
Product Category: | Circuit Protection |
Manufacturer: | Littelfuse Inc. |
Short Description: | PTC RESET FUSE 250V 400MA 4SMD |
More Detail: | Polymeric PTC Resettable Fuse 250V (600V Int) 400m... |
DataSheet: | TSM600-400F-2 Datasheet/PDF |
Quantity: | 1000 |
Moisture Sensitivity Level (MSL): | 2A (4 Weeks) |
Lead Free Status / RoHS Status: | Lead free / RoHS Compliant |
Resistance - Initial (Ri) (Min): | 500 mOhms |
Approvals: | UL |
Lead Spacing: | -- |
Thickness (Max): | 0.461" (11.70mm) |
Height - Seated (Max): | -- |
Size / Dimension: | 0.681" L x 0.425" W (17.30mm x 10.80mm) |
Package / Case: | 4-SMD |
Mounting Type: | Surface Mount |
Ratings: | -- |
Operating Temperature: | -40°C ~ 85°C |
Resistance - Post Trip (R1) (Max): | 2 Ohms |
Series: | PolySwitch®, TSM |
Time to Trip: | 14s |
Current - Trip (It): | 1A |
Current - Hold (Ih) (Max): | 400mA |
Current - Max: | 60A |
Voltage - Max: | 250V (600V Int) |
Type: | Polymeric |
Moisture Sensitivity Level (MSL): | -- |
Part Status: | Active |
Lead Free Status / RoHS Status: | -- |
Packaging: | Tape & Reel (TR) |
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PTC Resettable Fuses
Introduction
PTC resettable fuses are a type of circuit protection device that contain a positive temperature coefficient resistor (PTC) and are activated when current flow exceeds a certain threshold. The device trips, or “resets,” when the current reaches a predetermined level. They are used in a variety of applications, including power-sensitive electronics, power supplies, and circuit boards, and provide an effective way of protecting sensitive and expensive equipment from possible power surges.
TSM600-400F-2 application field and working principle
The TSM series of PTC resettable fuses is one of the most widely used PTC resettable fuses on the market today, with applications ranging from personal computers and networking equipment to industrial controls and home automation systems. The TSM600-400F-2 is used to protect DC circuits from overload or short circuits and to limit load currents. It is a one-time device that will reset when the fault condition is cleared.
The working principle of the TSM600-400F-2 is to use a PTC resistor to detect current above a set threshold. The PTC resistor is a device that has a positive temperature coefficient. This means that when the temperature of a PTC resistor increases, its resistance will also increase. In a PTC resettable fuse, when the current flow in the circuit rises above a certain level, the temperature of the PTC resistor will also increase and the resistance of the resistor will increase accordingly.
Once the current decreases again, the temperature of the PTC resistor will drop again and the resistance will decrease back to its original level. The TSM600-400F-2 is designed to detect when the current exceeds the threshold value and will trip, or reset the circuit, to prevent further damage.
Advantages of TSM600-400F-2
The TSM600-400F-2 offers a number of advantages over other circuit protection devices. First, it is not a one-time device; once triggered, it will reset after the fault condition has cleared. This greatly reduces the risk of circuit damage as the device can be reused after the fault has been resolved.
Second, since the device works on the principle of temperature fluctuations, there is no need for a circuit breaker. This makes it a much more efficient device, as the resetting time is much faster than that of a circuit breaker.
Finally, since the TSM600-400F-2 is designed to detect overcurrents, it is less likely to be tripped by transient surge currents, which are common in many electrical circuits. This makes it an ideal choice for applications that require high current protection.
Conclusion
The TSM600-400F-2 PTC resettable fuse is an ideal choice for applications that require circuit protection from overcurrents and power surges. It is a reliable and efficient device that will reset after a fault condition is cleared, making it an ideal solution for power-sensitive electronics and circuit boards. Moreover, its temperature-based design makes it much less prone to tripping due to transient surge currents, making it an excellent choice for applications that require prolonged power protection.
The specific data is subject to PDF, and the above content is for reference
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TSM600-250-RA-2 | Littelfuse I... | 0.0 $ | 1000 | PTC RESET FUSE 250V 250MA... |
TSM600-400F-2 | Littelfuse I... | -- | 1000 | PTC RESET FUSE 250V 400MA... |
TSM600-250F-2 | Littelfuse I... | -- | 1400 | PTC RESET FUSE 250V 250MA... |
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