LR4-900F Allicdata Electronics
Allicdata Part #:

LR4-900F-ND

Manufacturer Part#:

LR4-900F

Price: $ 1.10
Product Category:

Circuit Protection

Manufacturer: Littelfuse Inc.
Short Description: PTC RESET FUSE 20V 9A STRAP
More Detail: Polymeric PTC Resettable Fuse 20V 9A Ih User Defin...
DataSheet: LR4-900F datasheetLR4-900F Datasheet/PDF
Quantity: 9734
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
1 +: $ 0.99540
5 +: $ 0.94500
10 +: $ 0.89775
50 +: $ 0.72450
100 +: $ 0.61425
250 +: $ 0.59850
500 +: $ 0.50400
1000 +: $ 0.44888
5000 +: $ 0.39375
Stock 9734Can Ship Immediately
$ 1.1
Specifications
Series: PolySwitch®, LR4
Packaging: Bulk 
Lead Free Status / RoHS Status: --
Part Status: Active
Moisture Sensitivity Level (MSL): --
Type: Polymeric
Voltage - Max: 20V
Current - Max: 100A
Current - Hold (Ih) (Max): 9A
Current - Trip (It): 16.7A
Time to Trip: 5s
Resistance - Initial (Ri) (Min): 6 mOhms
Resistance - Post Trip (R1) (Max): 14 mOhms
Operating Temperature: -40°C ~ 85°C
Ratings: --
Mounting Type: User Defined
Package / Case: Strap
Size / Dimension: 1.831" L x 0.323" W (46.50mm x 8.20mm)
Height - Seated (Max): --
Thickness (Max): 0.039" (1.00mm)
Lead Spacing: --
Approvals: CSA, TUV, UL
Description

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

PTC resettable fuses are electrical protection components designed to protect electrical systems and equipment from damage caused by overcurrent. These fuses are commonly found in a variety of electrical applications, from consumer electronics to building automation systems. One particular type of fuse, the LR4-900F, is a widely used component in a variety of applications. In this article, we will take an in-depth look at the LR4-900F application field and working principle.

First and foremost, the LR4-900F is a high-performance PTC resettable fuse that provides robust and reliable overcurrent protection. It is a ceramic-based fuse with an excellent temperature cycling, wide operating temperature range, and minimal elongation during ramp-up or start-up. These features make it ideal for high current applications and environments. Furthermore, the fuse offers high breaking capacity at a constant current level and is capable of withstanding a 10A fault for a brief period of time.

When it comes to its application field, the LR4-900F is primarily used in LED lighting, consumer electronics, automotive, and industrial equipment, among others. The device can be used to protect devices from overcurrent events or short circuit faults. It is also utilized to improve system performance and reliability. It is suitable for applications requiring a high capacity, low voltage rating, and fast response.

The working principle of the LR4-900F is relatively straightforward. The device has two sets of contacts—the main working contact and the reset contact. When the current exceeds the rated current, an electric charge will run through the device, heating the ceramic fuse to a temperature that triggers the reset contact. This in turn creates a loop that cuts off the current, breaking the circuit and protecting the device from damage.

The LR4-900F also has a number of advanced features that make it ideal for a variety of applications. It includes a low internal resistance, fast response time, and a self-clamping device for enhanced safety. Additionally, it offers excellent EMI/RFI protection, which makes it suitable for applications that require electromagnetic compatibility. Lastly, the fuse also contains an overload indicator, indicating when the fuse has reached its current-carrying limit.

All in all, the LR4-900F is a robust, reliable, and high-performance PTC resettable fuse that provides excellent overcurrent protection. It is suitable for a variety of applications, and its advanced features make it ideal for protecting devices from fault events or short circuit faults. In addition, the fuse has a fast response time and offers excellent EMI/RFI protection, making it an excellent choice for those looking for reliable protection for their electrical systems and devices.

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

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