© 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
275 Series, PICO® Very Fast-Acting Fuse
Description
The PICO® Very Fast-Acting Fuse is designed to meet an
extensive array of performance characteristics in a
space-saving subminiature package.
Agency Approvals
Agency Agency File Number Ampere Range
E10480 20A - 30A
Features
Electrical Characteristics
• Very fast-acting
• Small size
• High current rating
(20A- 30A)
• RoHS compliant
• Wide operating
temperature range
• Low temperature rerating
% of Ampere
Rating Ampere Rating Opening Time
100% 20A - 30A 4 Hours, Min.
200% 20A - 30A 10 Seconds, Max.
Applications
Ampere
Rating
(A)
Amp Code Ordering
Number
Max
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
I2t (A2 sec)
Agency
Approvals
20.0 020. 0275020. 32
300A@32VDC
100A@32VAC
0.0033 203 x
25.0 025. 0275025. 32 0.0024 288 x
30.0 030. 0275030. 32 0.0020 355 x
Electrical Characteristics
RoHS
• Power supply
• PC server
• Networking equipment
• Storage system
Application testing is strongly recommended.
Additional Information
Datasheet Samples
Resources
© 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
Average Time Current CurvesTemperature Re-rating Curve
Soldering Parameters
100
10
1
0.1
0.01
0.001
0.050.1 110100 1000
TIME IN SECONDS
CURRENT IN AMPERES
20A
25A
30A
Wave Parameter Lead-Free Recommendation
Preheat:
(Depends on Flux Activation Temperature) (Typical Industry Recommendation)
Temperature Minimum: 100°C
Temperature Maximum: 150°C
Preheat Time: 60-180 seconds
Solder Pot Temperature: 260°C Maximum
Solder Dwell Time: 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.
Recommended Process Parameters:
Note:
Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
© 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
Materials
Transparent Polyvinylidene Fluoride
sleeve covered body, pure tin plated
copper wire leads
Solderability MIL-STD-202, Method 208
Lead Pull Force MIL-STD-202, Method 211, Test Condition
A (will withstand a 5lbs. axial pull test)
Product Characteristics
Operating Temperature –60ºC to +125ºC (Consider re-rating)
Shock
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)
Vibration
MIL-STD-202, Method 201 (10–55
Hz); Method 204, Test Condition D
(Vibrations of 10-2000 cps at 20 G’s)
Moisture Resistance MIL-STD-202, Method 106
3/4 A
Transparent
Insulating Sleeve
BB
A
C
DIA.
275 000 Series
Amperage
20 - 30 7.87
(.31")
27.78
(1.094")
3.38
(.133")
1.016
(.040")
D
BC
AD
Dimensions in mm (inches)
Dimensions
Packaging
Part Numbering System
Packaging Option Packaging Specification Quantity &
Packaging Code
T1: 52.4mm (2.062") Tape and Reel EIA 296 Please refer to available quantities above in “Part
Numbering System”
0275 xxxx M R T1 L
Lead Length
T1 = 52.4mm (2.062”)
Blank = For Loose pack (MXL,VXL)
RoHS
Only RoHS parts are available for
275 Series
Type of Packaging
R = Reel
X = Loose Pack
Quantity
M = 1000
V = 5
Current Rating
Refer to Amp Code column of
Electrical Characteristics Table
Series
275
The default lead length for loose pack is T1.
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.
