5×20 มม. เร็ว (ช้า) หลอดฟิวส์ด้วยตะกั่ว

ที่ 520 fuse is a cylindrical glass or ceramic fuse tube with a diameter of 5mm and a length of 20mm. The rated voltage is usually 250V, and the current ranges from 0.1A to 30A.

There are two main types of 5*20 ฟิวส์: fast-blow type (F type) and slow-blow type (T type). Fast-blow type is suitable for general electronic equipment, while slow-blow type is suitable for equipment with large starting current such as motors. The current specifications are very wide, ranging from the smallest 0.1A to the largest 30A.

F5AL Fast-Blow Fuse 5A 250V Glass Fuses 0.2 x 0.79 นิ้ว, 5 x 20 มม (5amp)

2ฟิวส์หลอดไฟขนาด 250V 5 มม. x 20 มม.

5 * 20mm Axial Glass fuse tube With Lead Wire size picture

เกี่ยวกับสถานการณ์แอปพลิเคชัน, ฟิวส์ประเภทนี้ใช้กันอย่างแพร่หลายในเครื่องใช้ในบ้าน, อุปกรณ์อุตสาหกรรม, อุปกรณ์อิเล็กทรอนิกส์ยานยนต์และสาขาอื่น ๆ. พารามิเตอร์ที่ต้องให้ความสนใจเมื่อซื้อรวมถึงปัจจุบัน, แรงดันไฟฟ้า, การหลอมรวมลักษณะ (เร็วหรือช้า), และมาตรฐานการรับรอง (เช่น UL, ซีเอสเอ, วีดีอี, ฯลฯ).

There are also different types of 5*20 ผู้ถือฟิวส์, such as direct plug-in type, waterproof type with leads, and PCB mounting type. Waterproof fuse holders are suitable for harsh environments such as outdoor lighting. The current carrying capacity of the fuse holder is usually 6-10A, and can reach up to 30A.

5*20 fuse is a standard size (5เส้นผ่านศูนย์กลางมม, 20mm length) cylindrical circuit protection component, mainly used for overcurrent protection. The following is its core characteristics and application information:

ฉัน. Basic specifications and types
‌Size standard‌
Unified cylindrical design with a diameter of 5mm×length of 20mm, glass or ceramic package, and metal cap electrodes at both ends. ‌
‌Glass tube‌: transparent and visible, easy to observe the fuse status (common in low-voltage household appliances).
‌Ceramic tube‌: strong high temperature resistance, suitable for industrial environments. ‌

‌Current and voltage range‌
‌Rated voltage‌: mainstream is 250V, and some models support 125V. ‌
‌Current range‌: Covering ‌0.1A~30A‌, common segments include:
‌Small current‌ (≤1A): 0.1ก, 0.2ก, 0.25ก, 0.5ก, 1ก (precision instruments, ไฟ LED);
‌Medium and high current‌ (>1ก): 2ก, 3ก, 5ก, 10ก, 15ก, 20ก, 30ก (power supply equipment, มอเตอร์);

‌Fusing characteristics‌ ‌Fast-break type (F type): Quick response, suitable for sensitive electronic equipment (marked such as F1A, F5A). ‌
‌Slow-break type (T type): Resistant to instantaneous current shock, suitable for motors and transformers (marked such as T2A, T10A). ‌

5 * 20mm Axial Glass fuse tube Fast Blow 250V With Lead Wire 0.5A/1A/2A/3A/3.15A/4A/5A/6.3A/8A/10A/12A/15A

5 * 20mm Axial Glass Fuse Quick Fast Break 250V with Lead Wire 0.5A-25A

520S-250MA .25A 250V ช้าระเบิด 5 x 20 ฟิวส์ตลับหมึก

II. Key parameters and certifications ‌

Electrical performance‌ ‌Breaking capacity‌: 35A@250V (low current model) to 200A@250V (high current model), ensuring safe disconnection in case of short circuit. ‌
‌Temperature adaptability‌: Working temperature ‌-55℃~125℃‌, passed the hot and cold shock test (-40℃~90℃ cycle). ‌

‌Safety certification‌
Mainstream products have passed ‌UL, ซีเอสเอ, ซีซีซี, วีดีอี, RoHS‌ certification and meet international safety standards. ‌

🛠️ III. Application scenarios and accessories ‌Typical applications‌
‌เครื่องใช้ในครัวเรือน‌: power adapter, small appliance circuit board (commonly used 1A~5A). ‌
‌ อุปกรณ์อุตสาหกรรม ‌: servo drive, power module (commonly used 10A~30A). ‌
‌Outdoor equipment‌: waterproof fuse holder (IP67 grade) for street lights and vehicle-mounted equipment. ‌

‌Matching fuse holder‌
‌PCB installation type‌: straight leg/bent leg design (such as PTF-77), supporting 10A~20A current. ‌
‌Waterproof lead type‌: with PVC sheath and nickel-plated brass terminals (such as H3-520E), suitable for harsh environments. ‌

💡 IV. Purchase recommendations ‌Current matching‌
Select according to 1.5 times the maximum operating current of the circuit (ตัวอย่างเช่น: the maximum current of the circuit is 2A → select a 3A fuse). ‌
‌Motor type‌: Prefer slow-break type (ต) to avoid false fuse at startup. ‌Digital circuit‌: Select fast-break type (เอฟ) to enhance overcurrent response. ‌
‌Certification and reliability‌
Confirm that the product has the ‌UL/CCC‌ mark to avoid uncertified brands (high safety risks). ‌

‌Purchase channels‌
Bulk purchase: Yaxun Electronics’ 1688 platform ($0.02/piece, 100 pieces minimum) ‌
Retail replacement: Yaxun Electronics’ JD/Tmall (เกี่ยวกับ $0.5 สำหรับ 10 pieces). ‌

💎สรุป
5*20 fuse is the basic protection component of electronic circuits. The selection needs to be based on current demand, fusing characteristics and environmental conditions. Give priority to brand products with complete certifications (such as Litte and Huade), and match them with corresponding fuse holders to ensure stable installation. ‌ For industrial or outdoor scenes, be sure to choose waterproof and high temperature resistant models to ensure long-term reliability.