REV. F 03/21

SF-0402FP-F Series - Fast Acting Precision Surface Mount Fuses

Specifications are subject to change without notice.

Users should verify actual device performance in their specific applications.

The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

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Tel: +1-951 781-5500 • Email: americus@bourns.com

www.bourns.com

Reliability Testing

No.

Test

Requirement

Test Condition

Test Reference

1

Bending

≤1 A: DCR change ≤ ±10 %

>1 A: DCR change ≤ ±20 %

2 mm

Refer to STP

document

2

Solderability

Minimum 95 % coverage

One dip at 255 °C for 5 seconds

MIL-STD-202

Method 208

3

Thermal shock

DCR change ≤ ±10 %

No mechanical damage

100 cycles between -55 °C and +125 °C

MIL-STD-202

Method 107

4

Moisture resistance

DCR change ≤ ±10 %

No excessive corrosion

10 cycles

MIL-STD-202

Method 106

5

Salt spray

DCR change ≤ ±10 %

No excessive corrosion

48 hour exposure, 5 % salt solution

MI L-STD-202

Method 101

6

Mechanical vibration

DCR change ≤ ±10 %

No mechanical damage

0.4 inch D.A. or 30 G between

5-3000 Hz

MIL-STD-202

Method 204

7

Mechanical shock

DCR change ≤ ±10 %

No mechanical damage

1500 G, 0.5 ms, half-sine shocks

MIL-STD-202

Method 213

8

Life

No electrical “opens” during testing

Voltage drop change shall be less

than ±10 % of initial value

75 % rated current for 2000 hours at

ambient temperature between

+20 °C and +30 °C

Refer to STP

document

Solder Reflow Recommendations

Profile Feature

Pb-Free Assembly

Preheat / Soak:

Temperature Min. (Tsmin)

Temperature Max. (Tsmax)

Time (ts) from (Tsmin to Tsmax)

150 °C

200 °C

60~120 seconds

Ramp Up Rate (TL to Tp)

3 °C / second max.

Liquidous Temperature (TL)

Time (tL) maintained above TL

217 °C

60~150 seconds

Peak Package Body

Temperature (Tp)

260 °C

Time (tp)* within 5 °C of the

specified classification temperature

(Tc)

30 seconds*

Ramp Down Rate (Tp to TL)

6 °C / second max.

Time 25 °C to Peak Temperature

8 minutes max.

TIME

tL

TIME 25 °C TO PEAK

tp

ts

Tsmax

Tsmin

Tp

TL

25

Tc -5 °C

PREHEAT AREA

MAX. RAMP UP RATE = 3 °C/s

MAX. RAMP DOWN RATE = 6 °C/s

*

Tolerance

for peak profile temperature (Tp ) is defined as a

supplier minimum and a user maximum.