MF-USML175 Datasheet, PDF (2/4 Pages) Bourns Electronic Solutions – Low Ohmic PTC Resettable Fuses

MF-USML Series - Low Ohmic PTC Resettable Fuses
Product Dimensions
Model
MF-USML175
MF-USML190
MF-USML200
MF-USML230
MF-USML250
MF-USML270
MF-USML300
MF-USML350
MF-USML380
A
Min.
Max.
3.00
(0.118)
3.43
(0.135)
3.00
(0.118)
3.43
(0.135)
3.00
(0.118)
3.43
(0.135)
3.00
(0.118)
3.43
(0.135)
3.00
(0.118)
3.43
(0.135)
3.00
(0.118)
3.43
(0.135)
3.00
(0.118)
3.43
(0.135)
3.00
(0.118)
3.43
(0.135)
3.00
(0.118)
3.43
(0.135)
Packaging: 3000 pcs. per reel.
B
Min.
Max.
2.35
(0.093)
2.80
(0.110)
2.35
(0.093)
2.80
(0.110)
2.35
(0.093)
2.80
(0.110)
2.35
(0.093)
2.80
(0.110)
2.35
(0.093)
2.80
(0.110)
2.35
(0.093)
2.80
(0.110)
2.35
(0.093)
2.80
(0.110)
2.35
(0.093)
2.80
(0.110)
2.35
(0.093)
2.80
(0.110)
C
Min.
Max.
0.30
(0.012)
0.60
(0.024)
0.30
(0.012)
0.60
(0.024)
0.30
(0.012)
0.60
(0.024)
0.30
(0.012)
0.60
(0.024)
0.30
(0.012)
0.60
(0.024)
0.30
(0.012)
0.60
(0.024)
0.30
(0.012)
0.60
(0.024)
0.30
(0.012)
0.60
(0.024)
0.30
(0.012)
0.60
(0.024)
Top View
A
Side View
C
Bottom View
D
E
B
Recommended Pad Layout
1.0 ± 0.05
(.039 ± .002)
2.0 ± 0.1
(.079 ± .004)
1.0 ± 0.05
(.039 ± .002)
2.5 ± 0.1
(.098 ± .004)
D
Min.
0.25
(0.010)
0.25
(0.010)
0.25
(0.010)
0.25
(0.010)
0.25
(0.010)
0.25
(0.010)
0.25
(0.010)
0.25
(0.010)
0.25
(0.010)
E
Min.
Max.
0.05
(0.002)
0.45
(0.018)
0.05
(0.002)
0.45
(0.018)
0.05
(0.002)
0.45
(0.018)
0.05
(0.002)
0.45
(0.018)
0.05
(0.002)
0.45
(0.018)
0.05
(0.002)
0.45
(0.018)
0.05
(0.002)
0.45
(0.018)
0.05
(0.002)
0.45
(0.018)
0.05
(0.002)
0.45
(0.018)
DIMENSIONS:
MM
(INCHES)
Terminal material:
ENIG-plated terminals
(Tin-plated terminals available upon
request).
Termination pad solderability:
Meets ANSI/J-STD-002 Category 2.
Recommended Storage:
40 °C max./70 % RH max.
Solder Reflow Recommendations
Preheating
300
250
200
150
100
50
0
Soldering
Cooling
Notes:
• MF-USML models cannot be wave soldered or hand soldered. Please
contact Bourns for 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.
• Excess solder may cause a short circuit, especially during hand
soldering. Please refer to the Multifuse^® Polymer PTC Soldering
Recommendation guidelines.
• Designed for single solder reflow operations.
160–220
10–20
120
Time (seconds)
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.