protection

assembly

Electrical Characteristics

SF-0402F Series - Fast Acting Surface Mount Fuses

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.

** Bourns is using the definition that appears to be the prevalent definition used as the industry standard at this time. The Bourns definition of “halogen-free” is:

Bromine (Br) content:

≤ 900 ppm; Chlorine (Cl) content: ≤ 900 ppm; Total Br + Cl content: ≤1500 ppm.

“SinglFuse” is a trademark of Bourns, Inc.

Specifications are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their specific applications.

Model

Rated Current

(Amps)

Fusing Time

Resistance

(m

Ω) Typ.***

Rated

Voltage

Breaking

Capacity

Typical

SF-0402F050

0.50

Open within 1

min. at 200 %

rated current

320

DC 24 V

DC24 V 35 A

0.00317

SF-0402F075

0.75

110

0.0049

SF-0402F080

0.80

120

0.00532

SF-0402F100

1.00

90

0.00724

SF-0402F125

1.25

67

0.01344

SF-0402F150

1.50

51

0.01356

SF-0402F160

1.60

46

0.01672

SF-0402F200

2.00

33

0.01983

SF-0402F250

2.50

25

0.03763

SF-0402F300

3.00

20

0.05427

SF-0402F315

3.15

19

0.06304

SF-0402F400

4.00

16

0.0896

***Resistance value was measured with less than 10 % of rated current.

Reliability Testing

Parameter

Requirement

Test Method

Carrying Capacity ..................................... No fusing....................................................Rated current, 4 hours

Fusing Time .............................................. Within 1 minute ..........................................200 % of its rated current

Interrupting Ability ..................................... No mechanical damages ...........................After the fuse is interrupted, rated voltage applied for

30 seconds again

Bending Test............................................. No mechanical damages ...........................Distance between holding points: 90 mm,

Bending: 3 mm,1time, 30 seconds

Resistance to Solder Heat........................ ±20 %.........................................................260 °C ±5 °C,10 seconds ±1 second

Solderability .............................................. 95 % coverage minimum ...........................235 °C ±5 °C, 2 ±0.5 second

245 °C ±5 °C, 2 ±0.5 second (lead free)

Temperature Rise ..................................... <75 ° ..........................................................100 % of its rated current, measure of surface

temperature

Resistance to Dry Heat............................. ±20 %.........................................................105 °C ±5 °C,1000 hours

Resistance to Solvent............................... No evident damage on protective ..............23 °C ±5 °C of isopropyl alcohol, 90 seconds coating

and marking

Residual Resistance................................. 10k W or more ...........................................Measure DC resistance after fusing

Thermal Shock ......................................... DR < 10 % .................................................-20 °C / +25 °C /+125 °C /+25 °C, 10 cycles

Typical Part Marking

Represents total content. Layout may

vary.

How to Order

RATING CURRENT (A)

F = 0.50

V = 0.75

K = 0.80

L = 1.00

M = 1.25

P = 1.50

N = 1.60

S = 2.00

T = 2.50

3 = 3.00

U = 3.15

W = 4.00

SF - 0402 F 050 - 2

SinglFuse™

Product Designator

SMD Footprint

1005 (EIA 0402) size

Fuse Blow Type

F = Fast acting

S = Slow blow

Rated Current

050-400 (500 mA - 4.00 A)

Packaging Type

- 2 = Tape & Reel (10,000 pcs./reel)

Asia-Pacific:

Tel: +886-2 2562-4117

Fax: +886-2 2562-4116

Europe:

Tel: +41-41 768 5555

Fax: +41-41 768 5510

The Americas:

Tel: +1-951 781-5500

Fax: +1-951 781-5700

www.bourns.com