Littelfuse 0434.750NR
Cross Number:
Item Description:
- Category: FUSE
- Is Military Spec.: No
- Availability: In Stock
- Qty Available: 265000
| Qty | Price |
|---|---|
| 1 - 996 | $0.25080 |
| 997 - 2,554 | $0.19570 |
| 2,555 - 5,847 | $0.17100 |
| 5,848 - 12,099 | $0.16530 |
| 12,100 + | $0.14820 |
Technical Document
DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.
31
Revision: February 13, 2008
Surface Mount Fuses
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for the most current information
Thin Film > 0603 Size > Very Fast Acting > 434 Series
434 Series
434 Series Fuse
Description
Agency Approvals
Agency Agency File Number Ampere Range
®
E10480 250mA - 3A
®
LR29862 250mA - 3A
Electrical Characteristics for Series
Features
t 5IF4MJN-JOF
fuse is an extremely
small, low profile design
(0603 chip size) utilizing
thin-film technology to
achieve precise control of
electrical characteristics.
t 5IFMPXFSIFJHIUQSPmMF
produces a flat surface for
improved performance in
pick-and-place operations
and an alternate solution
for height critical
applications.
Applications
®
®
% of Ampere
Rating
Opening Time at 25
O
C
100% 4 hours, Minimum
200% 5 seconds, Maximum.
300% 0.2 seconds, Maximum
The 434 series fast-acting surface mount fuse series is
an ultra small (0603 size) thin-film device designed for
secondary protection of circuits used in space constrained
applications such as hand-held portable electronic devices.
For RoHS compliant and lead-free design, please refer to
the Littelfuse 467 series thin film fuse.
Ampere
Rating
(A)
Amp
Code
Max
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
I
2
t (A
2
sec)
Agency Approvals
®
®
0.250 .250 32
50A @32 V AC/DC
0.3750 0.0030 x x
0.375 .375 32 0.2650 0.0053 x x
0.500 .500 32 0.1903 0.0087 x x
0.680 .680 32 0.1250 0.0109 x x
0.750 .750 32 0.1140 0.0171 x x
1.00 001. 32 0.0720 0.0212 x x
1.25 1.25 32
35A @32 V AC/DC
0.0540 0.0320 x x
1.50 01.5 32 0.0480 0.0526 x x
1.75 1.75 32 0.0390 0.0661 x x
2.00 002. 32 0.0360 0.1040 x x
2.50 02.5 32 0.0280 0.1750 x x
3.00 003. 32 0.0230 0.1980 x x
3.50 03.5 32 0.0190 0.2650 x x
4.00 004. 32 0.0170 0.3520 x x
5.00 005. 32 0.0130 1.2970 x x
Electrical Specifications by Item
1. Measured at 10% of rated current, 25ºC.
2. Measured at rated voltage.
t $FMMQIPOFT
t #BUUFSZQBDLT
t %JHJUBMDBNFSBT
t %7%QMBZFST
t )BSEEJTLESJWFT
Secondary protection for space constrained applications
such as:
32
Revision: February 13, 2008
Surface Mount Fuses
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for the most current information
Thin Film > 0603 Size > Very Fast Acting > 434 Series
434 Series
Average Time Current Curves
TIME IN SECONDS
CURRENT IN AMPERES
0.01
0.1
0.1
1
1
10
100
10 100
0.001
3A
2.5A
2A
1.5A
1A
.75A
.5A
.375A
.25A
3.5A
4A
5A
.68A
Reflow 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 – 180 secs
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
Reflow
- Temperature (T
L
) (Liquidus) 217°C
- Temperature (t
L
) 60 – 150 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
Soldering Parameters - Wave Soldering
Temperature Rerating Curve
33
Revision: February 13, 2008
Surface Mount Fuses
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for the most current information
Thin Film > 0603 Size > Very Fast Acting > 434 Series
434 Series
1.09
(.043")
REFLOW SOLDER
1.60
(.063")
.127
(.005")
MARKING CODE VARIES
WITH AMPERAGE RATING
(SEE CHART)
1.02
(.040")
.762
(.030")
2.54
(.100")
1.09
(.043")
WAVE SOLDER
3.20
(.126")
1.09
(.043")
1.02
(.040")
.813
(.032")
.305
(.012")
.279
(.011")
.254 (.010")
Sn/Pb
Sn/Pb
Cu
Sn/Pb
Coating
0434 1.75 NR
AMP CODE
SERIES
QUANTITY CODE
Materials
Body: Epoxy Substrate
Terminations: 100% Tin over Nickel over Copper
Element Cover Coat: Conformal Coating
Operating
Temperature
– 55
O
C to 90
O
C. Consult temperature rerating
curve chart. For operation above 90°C contact
Littelfuse.
Humidity MIL-STD-202F Method 103B Condition D
Thermal Shock
Withstands 5 cycles of – 55
O
C to
125
O
C
Vibration Per MIL-STD-202F
Insulation Resistance
(After Opening)
Greater than 10,000 ohms
Resistance to Soldering
Heat
Withstands 60 seconds above
200
O
C and up to 260
O
C, maximum
Product Characteristics
Dimensions
Packaging
Part Numbering System
Part Marking
Packaging Option Packaging Specification Quantity
Quantity &
Packaging Code
8mm Tape and Reel EIA RS-481-2 (IEC 286, part 3) 5000 NR
Amp
Code
Marking
Code
.250 D
.375 E
.500 F
.680 X
.750 G
001. H
1.25 J
01.5 K
1.75 L
002. N
02.5 O
003. P
03.5 R
004. S
005. T
