Products Desc.
The Sefuse SM type fuse is designed to protect electronic equipment from overcurrent or overvoltage conditions by interrupting the current flow when the current exceeds a predetermined value. It is designed to self-reset after the fault condition is cleared, allowing normal operation to resume without the need for replacement.
The SM type fuse is available in a variety of current ratings, voltage ratings, and trip times. The current ratings range from a few milliamperes to several amperes, and the voltage ratings can be up to several hundred volts. The trip time is typically a few seconds to tens of seconds, depending on the current rating and temperature conditions.
It is commonly used in various electronic applications such as power supplies, battery chargers, motors, and other electrical equipment. It provides a reliable and cost-effective solution for protecting electronic equipment from overcurrent and overvoltage conditions.
Features of SM Thermal Fuse
1. Protection against overheating: The thermal fuse is designed to provide protection against overheating in electrical equipment.
2. Quick response time: The thermal fuse is designed to respond quickly to changes in temperature. It trips and opens the circuit within a few seconds of the temperature exceeding its rating, providing fast and effective protection to the equipment.
3. High reliability: The sefuse SM type thermal fuse is known for its high reliability and durability. It is designed to withstand repeated thermal cycles and provide long-term protection to the equipment.
4. Compact size: The thermal fuse is available in a compact size, which makes it easy to integrate into a variety of electrical equipment.
5. Cost-effective: The sefuse SM type thermal fuse is a cost-effective solution for providing protection against overheating in electrical equipment. It is a simple and reliable safety device that can help prevent costly equipment damage and downtime.
Product Parameter
| Product name: | SM Series SEFUSE Thermal Fuse | Case: | Ceramic |
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Rated Voltage: |
250V | Rated Current: | 0.5A 1A 2A AC, 3A-7A DC |
| Rated Temperature: | 76C To 225C | Tolerance: | ±2 ±3 |
| Leads: | Axial | Function: | Over-heat Protection |
| Quality: | 100% Tested | Type: | Thermal Fuse |
Products Details
There are 4 series of SF type thermal fuse. They are SM/A, SM/B and SM/G. The sefuse SM type thermal fuse is designed to operate at a specific temperature range, which is typically between 70°C and 240°C. The temperature rating of the device is marked on the body of the fuse.
Working Principle
Products Dimension
SM/B Series:
SM/G Series:
Application
The SM type fuse is a surface-mountable thermal cutoff fuse designed to protect electronic equipment from overcurrent and overheating. Here are some possible applications of the Sefuse SM type fuse:
1. Power supply units: SM type fuses can be used to protect power supply units from overcurrent, which can damage the unit and other connected equipment.
2. Battery packs: Sefuse SM type fuses can be used in battery packs to prevent overcurrent and thermal runaway, which can cause batteries to catch fire or explode.
3. LED lighting: SM type fuses can be used to protect LED lighting fixtures from overcurrent, which can damage the LED driver and cause the fixture to fail.
4. Audio equipment: SM type fuses can be used to protect audio equipment, such as amplifiers and speakers, from overcurrent and overheating.
5. Motors: Sefuse SM type fuses can be used to protect motors from overcurrent, which can cause the motor to overheat and fail.
Installation Case
Installing a Sefuse SM type fuse involves the following steps:
1. Choose the appropriate fuse rating: The first step is to select the appropriate Sefuse SM type fuse based on the current rating of the circuit you want to protect. The rated current of the fuse should be equal to or slightly higher than the maximum current of the circuit.
2. Identify the correct polarity: Make sure to identify the correct polarity of the circuit and the fuse. The SM type fuse is polarized and has a marked side that indicates the positive terminal.
3. Prepare the circuit board: Clean the circuit board pads and remove any excess solder or debris. Ensure that the pads are spaced to match the dimensions of the SM type fuse.
4. Place the fuse on the circuit board: Place the Sefuse SM type fuse on the circuit board, making sure that the marked side matches the polarity of the circuit. Align the pads of the fuse with the corresponding pads on the circuit board.
5. Solder the fuse to the circuit board: Apply a small amount of solder to the pads of the SM type fuse and the corresponding pads on the circuit board. Hold the fuse in place until the solder cools and solidifies.
6. Inspect the installation: Inspect the installation to ensure that the Sefuse SM type fuse is securely attached to the circuit board and that there are no visible solder bridges or cold joints.
7. Test the circuit: Once the SM type fuse is installed, test the circuit to ensure that it is functioning properly and that the fuse is providing the required protection.
Factory Tour
Dongguan Senreach Electronic Co., Ltd. was established in 2000. Our factory covers an area of 4000 square meters with a monthly production capacity of 50 million pieces. We are committed to becoming a comprehensive circuit protection component manufacturer and solution supplier.
We are specialized in over current protection, over temperature protection, over voltage protection design, development, production and sales. Products are widely used in consumer electronics, automobiles, ships, communications, power supplies, power tools, new energy and other fields.
With variety of advanced manufacturing and testing equipment, we adopt perfect quality management system to ensure that every single piece of our components are safe and stable. Our operations are ISO9001:2000-certified and products meet international standards.
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Fuse manufacturing
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Why Choose Us
Price Advantage
We have a complete suuply chain from raw materials to final packing which enables us to control the production cost at every step.
Guaranteed Quality
Every piece of product pass full inspection by both auto test equipment and our QA team.
Stock Wholesale
We have open stock for some universal standard products. Delivery time is just about 1 week.
One-Stop service
We have R&D, QA, sales and after-sales team to offer you a full service including selection recommendation, technical support, after-sales protection.
Exhibition
In the past ten years, we have participated in a lot of domestic and foreign exhibitions about electronic parts. More and more foreign traders got to know our factory, so that they could directly buy from our factory and reduce their product costs. We will update our exhibition infomation on the website.
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