Bourns PTC fuse Current I(H) 2.5 A 15 V (L x W x H) 9.5 x 6.71 x 3 mm MF-SM250-2 1 pc(s) MF-SM250-2 数据表

Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.

100

1 

10 

0.1 

0.01 

0.001 

0.1

1

10

100

Fault Current  (Amps)

T

ime to T

rip (Seconds)

M

F-SM

200

M

F-SM

030

M

F-SM

050

M

F-SM

075, M

F-SM

075/60

M

F-SM

100, M

F-SM

100/33

M

F-SM

185/33

M

F-SM

125

M

F-SM

150, M

F-SM

150/33

M

F-SM

250

M

F-SM

300

M

F-SM

260

Represents total content. Layout may vary.

MANUFACTURER'S
TRADEMARK

PART IDENTIFICATION

DATE CODE -
WEEK 1 OF 2000 = 0A
(YEAR & WEEK)
WEEK 27 OF 2000 = A0
(WEEK & YEAR)

160–220

300

250

200

150

100

50

0

10–20

Temperature (

°

C)

120

Time (seconds)

• Recommended 

refl ow methods: IR, vapor phase oven, hot air oven.

•  Devices are not designed to be wave soldered to the bottom side of the 
 board.

•  Gluing the devices is not recommended.

•  Recommended maximum paste thickness is 0.25  mm (.010 inch).

•  Devices can be cleaned using standard industry methods and solvents.

• If 

refl ow temperatures exceed the recommended profi le, devices may not 

 

meet the performance requirements.

•  A device should not be reworked.

The recommended long term storage conditions for Multifuse

®

 Polymer PTC devices are 40 °C maximum and 70 % RH maximum. All devices 

should remain in the original sealed packaging prior to use. Devices may not conform with data sheet specifi cations if these storage 
recommendations are exceeded. Devices stored in this manner have an indefi nite shelf life.

MF-SM SERIES, REV. P, 11/10