300V Square Slow Blow Surface Mounted Fuse
  • Air Pro300V Square Slow Blow Surface Mounted Fuse
  • Air Pro300V Square Slow Blow Surface Mounted Fuse
  • Air Pro300V Square Slow Blow Surface Mounted Fuse
  • Air Pro300V Square Slow Blow Surface Mounted Fuse
  • Air Pro300V Square Slow Blow Surface Mounted Fuse
  • Air Pro300V Square Slow Blow Surface Mounted Fuse

300V Square Slow Blow Surface Mounted Fuse

300V Square Slow Blow Surface Mounted Fuse is a very small, Wire-in-Air (WIA) square shape surface mount fuse, designed for secondary side circuit over-current protection applications. These fuses are designed for PCB using surface mount technology.

Send Inquiry

Product Description

2410 300V Time Lag Wire In Air High Inrush Square Shape Surface Mount Fuse 1A


Description of 300V Square Slow Blow Surface Mounted Fuse



2410 300V Time Lag square shape surface mount High Inrush fuses adopt Wire-in-Air (WIR) construction. Small footprint with wide range of available current rating makes the fuse ideal for over-current protection applications, in both AC and DC circuits using surface mount technology. SST Series is also RoHS compliant and halogen-free to meet global environmental standard.

300V Square Slow Blow Surface Mounted Fuse300V Square Slow Blow Surface Mounted Fuse

Features of 300V Square Slow Blow Surface Mounted Fuse


Slow-blow, High inrush withstand capability
Wire-In-Air performance
Tape and Reel for automatic placement
Wide operating temperature
Wide range of current rating available
Higher temperature profiles
Low temperature de-rating
Excellent environmental integrity


Application of 300V Square Slow Blow Surface Mounted Fuse


Battery pack
Power supply
Industrial equipment
Telecom system
Cooling fan system
LCD monitors and modules
PC related equipment / peripherals
Medical equipment
Wireless base station
Automotive devices


Standards and Agency Approvals of 300V Square Slow Blow Surface Mounted Fuse


1 Standards:In accordance with UL 248-14.

2 Agency Approvals

Agency

Current Range

Series Number

UL

50mA ~ 7A

SST

C-UL

50mA ~ 7A

SST


Structure And Size of 300V Square Slow Blow Surface Mounted Fuse  (Unit:mm)


300V Square Slow Blow Surface Mounted Fuse size
End caps-------Au or Ag Plated Brass Cap
Body ----------Non-Transparent Square Ceramic Tube
Fuse element----Cu-Ag Alloy wire


Electrical Characteristics of 300V Square Slow Blow Surface Mounted Fuse


Catalog

No.

Ampere

Rating

Voltage

Rating

Breaking

Capacity

Nominal Cold

Resistance

(Ohms)

I2TMelting

Integral(A2.S)

Agency Approvals

SST0250

250mA

300VAC

[email protected]

[email protected]

[email protected]

0.860

0.145

SST0300

300mA

0.620

0.162

SST0315

315mA

0.550

0.189

SST0375

375mA

0.470

0.200

SST0400

400mA

0.380

0.238

SST0500

500mA

0.320

0.275

SST0600

600mA

0.285

0.470

SST0630

630mA

0.256

0.566

SST0700

700mA

0.208

0.805

SST0750

750mA

0.175

1.240

SST0800

800mA

0.155

1.880

SST1100

1A

0.148

3.500

SST1125

1.25A

0.102

4.760

SST1150

1.5A

0.085

6.305

SST1200

2A

0.044

8.950

SST1250

2.5A

0.043

16.025

SST1300

3A

0.033

21.560

SST1315

3.15A

0.029

22.750

SST1350

3.5A

0.027

27.050

SST1400

4A

0.025

31.808

SST1500

5A

0.019

40.250

SST1600

6A

0.018

67.245

SST1630

6.3A

0.017

73.550

SST1700

7A

0.015

76.280


1 Test Conditions :All electrical test is to be conducted with the ambient air at a temperature of 25±5℃.
2 Interrupting Rating:Breaking Capacity: [email protected][email protected][email protected]

3Operating Characteristics of the2410 300V Time Lag Surface Mount Fuse


% of Ampere Rating(In)

Blowing Time

100% * In

4 hours Min

200% * In

120 sec Max


Package of 300V Square Slow Blow Surface Mounted Fuse


1,000 pcsin 7 inches dia. reel, 12mm wide tape, EIA Standard 481


Reliability of 300V Square Slow Blow Surface Mounted Fuse


NO.

Item

Content

Reference standards

1

Product Marking

Brand, Ampere Rating

AO LITTEL marking standards

2

Operating Temperature

-55°C to 125°C

IEC60068-2-1/2

3

Solderability

T=240°C±5°C , t=3sec±0.5sec, Coverage≥95%

MIL-STD-202, Method 208

4

Resistance to Soldering Heat

10 sec at 260°C

MIL-STD-202, Method 210, Test condition B

5

Insulation Resistance (after Opening)

10,000 ohms minimum

MIL-STD-202, Method 302, Test Condition A

6

Thermal Shock

5 cycles, -65°C / +125°C, 15 minutesat each extreme

MIL-STD-202, Method 107, Test Condition B

7

Mechanical Shock

100G’s peak for 6 milliseconds, 3cycles

MIL-STD-202, Method 213, Test I

8

Vibration

0.03”amplitude, 10-55 Hz in 1 min. 2hrs each XYZ=6hrs

MIL-STD-202, Method 201

9

Moisture Resistance

10 cycles

MIL-STD-202, Method 106

10

Salt Spray

5% salt solution,48hrs

MIL-STD-202, Method 101, Test Condition B


Environmental Characteristic of 300V Square Slow Blow Surface Mounted Fuse


When choosing the fuse's specification, if the operating environmental temperature beyond the scopefrom 20~30℃, engineer should consider the environmental temperature's affection to fuses.Please refer: Temperature Rerating Curve:

300V Square Slow Blow Surface Mounted Fuse temperature


Frequently Asked Questions of 300V Square Slow Blow Surface Mounted Fuse


Q: What's the difference between the slow blow and fast acting fuse in terms of performance and application?


A: A slow blow fuse is different from a fast acting fuse in its capability to withstand transient pulse currents, i.e., it can withstand the surge current upon power-on/off, thus ensuring the equipment works normally. Therefore, slow blow fuses are often called time-delay fuses. Technically, a slow blow fuse features a higher I2t value, and it requires more energy to blow, so it is more capable of withstanding pulses compared with a fast acting fuse of same rated current.

When an overcurrent occurs in a circuit, the breaking time of a slow blow fuse takes longer than that of a fast acting fuse because of the larger I2t. Is it less protected this way as some people are worried? The answer is no. Once the circuit fails, the overcurrent will last and corresponding energy released will go beyond the I2t of the fuse until it blows out. The timing difference of slow blowing and fast acting is not significant to their protection. Slow blowing will affect the protection performance only when sensitive components existing in the protected circuit need to be protected.

Due to the previous difference, slow blow and fast acting fuses are applied to different circuits. Fast acting fuses must be used in purely resistive circuits (no or fewer surges) or the circuits where IC and other sensitive components need to be protected, while slow blow fuses are preferably used in capacitive or sensitive circuits where surges occur upon power-on/off and power input/output. Apart from circuits for IC protection, most applications with fast acting fuses can be replaced with slow blow ones to enhance anti-surge capability. Contrarily, replacement of applications with slow blow fuses to fast acting ones may cause the fuse to break as soon as the equipment is switched on and fails to work.

Furthermore, economic consideration is also an indirect factor for selection because a slow blow fuse is much expensive than a fast acting one.

Hot Tags: 300V Square Slow Blow Surface Mounted Fuse, China, Manufacturers, Suppliers, Factory, Made in China, Wholesale, Buy, Customized, in stock, Bulk, Free Sample, Cheap, Discount, Buy discount, Low price, Price, Price list, Quotation

Related Category

Send Inquiry

Please feel free to give your inquiry in the form below. We will reply you within 24 hours.
验证码,看不清楚?请点击刷新验证码