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
20A - 30A
20A - 30A
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
© 2018 Littelfuse, Inc.
Application testing is strongly recommended. Specifications are subject to change without notice.
Revised: 02/15/18
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.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/15/18
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
–60ºC 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”
Disclaimer Notice -
Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at
www.littelfuse.com/disclaimer-electronics.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/15/18
