Datasheet

Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
94
© 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Surface Mount Fuses
154 Series
NANO
2®
> 154 OMNI-BLOK
®
Fuse and Holder Combination
Please refer to www.littelfuse.com/series/154.html
or /154T.html for current information.
L
F
7 A
L F
3.81
(.150")
2.13
(.084")
REF.
10.62
(.418")
4.24
(.167")
9.73
(.383") REF.
3.81
(.150")
5.03
(.198")
1 5 5
FUSE
Recommended Pad Layout
Dimensions
Packaging
Packaging Option Packaging Specication Quantity
Quantity &
Packaging Code
Reel Pack EIA RS–481–2 (IEC 286, part 3) 1500 DR
Soldering Parameters
Time
Temperature
T
P
T
L
T
S(max)
T
S(min)
25
t
P
t
L
t
S
time to peak temperature
(t 25ºC to peak)
Ramp-down
Ramp-up
Preheat
Critical Zone
T
L
to T
P
Part Numbering System
0154 001. D R T L
SERIES
AMP Code
QUANTITY Code
PACKAGING Code
Refer to Ordering information
section on previous page.
D = 1500 pcs
R = Tape and Reel
Example:
1.5 amp Fast-acting
product is 015401.5DR.
1.5 amp Time-lag product
is 015401.5DRT.
(1 amp product shown
above).
TYPE Code
“L” sufx for
Black Color Holder
T = Time-Lag (Slo-Blo
®
)
Reow Condition Pb – Free assembly
Pre Heat
- Temperature Min (T
s(min)
) 150°C
- Temperature Max (T
s(max)
) 200°C
- Time (Min to Max) (t
s
) 60 – 120 seconds
Average Ramp-up Rate (Liquidus Temp
(T
L
) to peak)
5°C/second max.
T
S(max)
to T
L
- Ramp-up Rate 5°C/second max.
Reow
- Temperature (T
L
) (Liquidus) 217°C
- Temperature (t
L
) 60 – 90 seconds
Peak Temperature (T
P
) 250
+0/-5
°C
Time within 5°C of actual peak
Temperature (t
p
)
20 – 40 seconds
Ramp-down Rate 5°C/second max.
Time 25°C to peak Temperature (T
P
) 8 minutes max.
Do not exceed 260°C
Product Characteristics
Operating
Temperature
-55ºC to 125ºC