1210L110/12WR Allicdata Electronics
Allicdata Part #:

F6132TR-ND

Manufacturer Part#:

1210L110/12WR

Price: $ 0.00
Product Category:

Circuit Protection

Manufacturer: Littelfuse Inc.
Short Description: PTC RESET FUSE 12V 1.1A 1210
More Detail: Polymeric PTC Resettable Fuse 12V 1.1A Ih Surface ...
DataSheet: 1210L110/12WR datasheet1210L110/12WR Datasheet/PDF
Quantity: 1000
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
Stock 1000Can Ship Immediately
Specifications
Resistance - Initial (Ri) (Min): 60 mOhms
Approvals: cURus, TUV
Lead Spacing: --
Thickness (Max): 0.049" (1.25mm)
Height - Seated (Max): --
Size / Dimension: 0.127" L x 0.102" W (3.22mm x 2.58mm)
Package / Case: 1210 (3225 Metric), Concave
Mounting Type: Surface Mount
Ratings: --
Operating Temperature: -40°C ~ 85°C
Resistance - Post Trip (R1) (Max): 210 mOhms
Series: POLY-FUSE®, 1210L
Time to Trip: 100ms
Current - Trip (It): 2.2A
Current - Hold (Ih) (Max): 1.1A
Current - Max: 100A
Voltage - Max: 12V
Type: Polymeric
Moisture Sensitivity Level (MSL): --
Part Status: Active
Lead Free Status / RoHS Status: --
Packaging: Tape & Reel (TR) 
Description

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PTC Resettable Fuses

PTC resettable fuses (PTC stands for Positive Temperature Coefficient) are self-resetting, solid-state devices that are used to protect electronic circuits from current overloads. When current flowing through the PTC resettable fuse exceeds the designed maximum rating, the device will heat up and its resistance will increase drastically, limiting the amount of current that can flow through. The device will remain in this state until the overload is removed, at which point the device will cool and the resistance will return to its original level, allowing the circuit to operate normally again.

1210L110/12WR Application Field and Working Principle

The 1210L110/12WR is a PTC resettable fuse specifically designed to protect surface mount electronic assemblies from current overloads. It has a rated current of 110A, a resistance of 0.12W, and an operating temperature range of -40°C to 85°C. The fuse has a self-extinguishing, thermoplastic housing, and its leads are designed to be soldered to the surface of the board. Its response time is instantaneous, and it has a maximum breaking capacity of 600V.

The 1210L110/12WR works by using a material that has a positive temperature coefficient. Meaning, when the current through this device exceeds its rated value, the resistance of the material will increase. This will cause the material to heat up and its resistance to continue to increase, limiting the amount of current that can flow through. Once the overload is removed, the device will cool and the resistance will return to its original level, allowing the circuit to operate normally again.

Advantages and Disadvantages

The 1210L110/12WR is a very practical device because of its ability to self-reset. This means that in the event of an overload, the device will not require manual intervention to reset the circuit, saving time and resources. Additionally, the 1210L110/12WR has an excellent response time, so it can provide protection in milliseconds, further reducing potential damage. It is also more efficient than traditional fuses because it does not require replacement, which reduces maintenance costs.

The main disadvantage of PTC resettable fuses is their finite lives. Over time, the resistance of the device can degrade, limiting its ability to protect the circuit. If the device is used frequently, its lifespan can be greatly reduced. Additionally, PTC resettable fuses are not as robust as traditional fuses, so they may not be suitable for applications that require a high level of protection.

Conclusion

The 1210L110/12WR is a PTC resettable fuse specifically designed to protect surface mount electronic assemblies from current overloads. It is a highly practical device, as it can limit current and self-reset without manual intervention, and its response time is extremely fast. However, PTC resettable fuses are not as robust as regular fuses and their life expectancy can be reduced if they are used frequently.

The specific data is subject to PDF, and the above content is for reference

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