Axial Lead & Cartridge Fuses
PICO
®
> Very Fast-Acting Fuse > 275 Series
275 Series, PICO
®
Very Fast-Acting Fuse
Description
RoHS
The PICO
®
Very Fast-Acting Fuse is designed to meet an
extensive array of performance characteristics in a
space-saving subminiature package.
Features
• Very fast-acting
• Small size
• High current rating
(20A- 30A)
Agency Approvals
Agency
Agency File Number
Ampere Range
• RoHS compliant
• Wide operating
temperature range
• Low temperature rerating
Applications
• Power supply
• PC server
Electrical Characteristics
• Networking equipment
• Storage system
E10480
20A - 30A
Additional Information
% of Ampere
Rating
100%
200%
Ampere Rating
20 - 30
20 - 30
Opening Time
4 Hours,
Min.
10 Seconds,
Max.
Datasheet
Resources
Samples
Electrical Characteristics
Ampere
Rating
(A)
20.0
25.0
30.0
Max
Voltage
Rating
(V)
32
32
32
300A@32VDC
100A@32VAC
Nominal Cold
Resistance
(Ohms)
0.0033
0.0024
0.0020
Nominal
Melting
I
2
t (A
2
sec)
203
288
355
Agency
Approvals
Amp Code
Ordering
Number
Interrupting
Rating
020.
025.
030.
0275020.
0275025.
0275030.
x
x
x
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice. Application testing is strongly recommended.
Revised: 02/12/16
Axial Lead & Cartridge Fuses
PICO
®
> Very Fast-Acting Fuse > 275 Series
Temperature Re-rating Curve
Average Time Current Curves
20A
25A
30A
1
10
100
CURRENT IN AMPERES
100
10
TIME IN SECONDS
Note:
Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
1
0.1
0.01
Soldering Parameters
Recommended Process Parameters:
Wave Parameter
Preheat:
(Depends on Flux Activation Temperature)
(Typical Industry Recommendation)
0.001
0.05 0.1
1000
Lead-Free Recommendation
Temperature Minimum:
Temperature Maximum:
Preheat Time:
Solder Pot Temperature:
Solder Dwell Time:
100
°
C
150
°
C
60-180 seconds
260
°
C Maximum
2-5 seconds
Recommended Hand-Solder Parameters:
Solder Iron Temperature: 350°C +/- 5°C
Heating Time: 5 seconds max.
Note: These devices are not recommended for IR or
Convection Reflow process.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/12/16
Axial Lead & Cartridge Fuses
PICO
®
> Very Fast-Acting Fuse > 275 Series
Product Characteristics
Transparent Polyvinylidene Fluoride
sleeve covered body, pure tin plated
copper wire leads
MIL-STD-202, Method 208
MIL-STD-202, Method 211, Test Condition
A (will withstand a 5lbs. axial pull test)
Vibration
Moisture Resistance
Operating Temperature
–55ºC to +125ºC (Consider re-rating)
MIL
-STD-202, Method 213, Test
Condition I (100 G’s peak for 6
milliseconds) and per method 2028
(78G’s peak for 11 milliseconds)
MIL
-STD-202, Method 201 (10–55
Hz); Method 204, Test Condition D
(Vibrations of 10-2000 cps at 20 G’s)
MIL
-STD-202, Method 106
Materials
Solderability
Lead Pull Force
Shock
Dimensions
275
000
Series
B
A
3/4 A
Part Numbering System
0275 xxxx M R T1 L
B
C
DIA.
Series
275
Current Rating
Refer to Amp Code column of
Electrical Characteristics Table
Transparent
Insulating Sleeve
D
Quantity
M
= 1000
V
=5
Amperage
20 - 30
A
7.87
(.31")
Dimensions in mm (inches)
B
27.78
(1.094")
C
3.38
(.133")
Type of Packaging
R = Reel
X = Loose Pack
D
1.016
(.040")
Lead Length
T1
= 52.4mm (2.062”)
Blank
= For Loose pack (MXL,VXL)
RoHS
Only RoHS parts are available for
275 Series
Packaging
Packaging Option
T1: 52.4mm (2.062") Tape and Reel
The default lead length for loose pack is T1.
Packaging Specification
EIA 296
Quantity &
Packaging Code
Please refer to available quantities above in “Part
Numbering System”
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/12/16
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