■

Single blow fuse for overcurrent

protection

■

1005 (EIA 0402) miniature footprint

■

Slow blow fuse

■

UL certified

■

RoHS compliant* and

halogen free

■

Thin film chip fuse

■

Surface mount packaging for automated

assembly

Electrical Characteristics

SF-0402S Series - Slow Blow Surface Mount Fuses

*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.

“SinglFuse” is a trademark of Bourns, Inc.

Specifications are subject to change without notice.

Customers 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-0402S050

0.50

Open within 5

sec. at 250 %

rated current

235

DC 24 V

DC24 V 35 A

0.00370

SF-0402S080

0.80

86

0.00947

SF-0402S100

1.00

64

0.01479

SF-0402S125

1.25

45

0.02310

SF-0402S150

1.50

35

0.02400

SF-0402S160

1.60

32

0.03734

SF-0402S200

2.00

24

0.04040

SF-0402S250

2.50

19

0.06760

SF-0402S300

3.00

15

0.09860

SF-0402S315

3.15

14

0.10868

SF-0402S400

4.00

10.5

0.11450

*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

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 S 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