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.

3312 - 2 mm SMD Trimming Potentiometer

MF-LSMF Series - PTC Resettable Fuses

Thermal Derating Chart - Ihold (Amps)

Model

Ambient Operating Temperature

-40 ˚C

-20 ˚C

0 ˚C

23 ˚C

40 ˚C

50 ˚C

60 ˚C

70 ˚C

85 ˚C

MF-LSMF185/33X

2.80

2.47

2.17

1.85

1.54

1.39

1.22

1.07

0.85

MF-LSMF260X

3.75

3.35

3.00

2.60

2.35

2.15

2.05

1.80

1.30

MF-LSMF300X

4.53

4.02

3.51

3.00

2.52

2.26

1.99

1.75

1.34

MF-LSMF300/24X

4.00

3.55

3.20

3.00

2.50

2.25

2.15

1.85

1.50

160–220

300

250

200

150

100

50

0

10–20

120

Preheating

Soldering

Cooling

Time (seconds)

Solder Reflow Recommendations

Notes:

•

MF-LSMF models cannot be wave soldered. Please contact Bourns for hand soldering

recommendations.

•

If reflow temperatures exceed the recommended profile, devices may not meet the performance

requirements.

•

Compatible with Pb and Pb-free solder reflow profiles.

How to Order

MF - LSMF 185/33X - 2

Designator

Series

LSMF = 7555 mm (2920 mils)

Surface Mount Component

Hold Current, Ihold

185-300 (1.85 Amps - 3.00 Amps)

Higher Voltage Option

/24 = 24 Volt Rated

/33 = 33 Volt Rated

MF-LSMF Series

Packaging

Packaged per EIA 481-1

-2 = Tape and Reel

Typical Part Marking

Represents total content. Layout may vary.

MF-LSMF SERIES, REV. B, 07/13

PART IDENTIFICATION EXAMPLES:

MF-LSMF185/33X = 9

MF-LSMF260X = E

MF-LSMF300X = F

MF-LSMF300/24X = J

BI-WEEKLY DATE CODE:

WEEKS 47-48 = X

E

X