© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/23/17
Axial Lead & Cartridge Fuses
5×20 mm > Audio & Medical > 285 Series
Features
Applications
Agency Approvals
Agency Agency File Number Ampere Range
PS
E
NBK080205-E10480A
NBK250702-E10480E
NBK100408-JP1021A
1A – 5A
6.3A & 15A
20A
Electrical Characteristics for Series
% of Ampere
Rating
Ampere
Rating Opening Time
150%
0.125A - 0.5A 60 minutes, Minimum
1A - 3.15A 60 minutes, Minimum
5A - 6.3A 60 minutes, Minimum
8A - 20A 30 minutes, Minimum
210%
0.125A - 0.5A 30 minutes, Maximum
1A - 3.15A 30 minutes, Maximum
5A - 6.3A 30 minutes, Maximum
8A - 20A 30 minutes, Maximum
275%
0.125A - 0.5A 250 ms. Min.; 80 sec. Max.
1A - 3.15A 750 ms. Min.; 80 sec. Max.
5A - 6.3A 750 ms. Min.; 80 sec. Max.
8A - 20A 750 ms. Min.; 80 sec. Max.
400%
0.125A - 0.5A 50 ms. Min.; 5 sec. Max.
1A - 3.15A 95 ms. Min.; 5 sec. Max.
5A - 6.3A 150 ms. Min.; 5 sec. Max.
8A - 20A 150 ms. Min.; 5 sec. Max.
1000%
0.125A - 0.5A 50 ms. Min.; 150 ms. Max.
1A - 3.15A 10 ms. Min.; 150 ms. Max.
5A - 6.3A 10 ms. Min.; 150 ms. Max.
8A - 20A 10 ms. Min.; 150 ms. Max.
RoHS
Pb
Ideal for supplementary protection in appliances or
utilization equipment, especially in audio and medical
equipment.
285 Series, 5×20 mm, Audio & Medical Fuse PS
E
5×20mm fuse with gold or rhodium-plated caps and
colourful ceramic body. Designed to IEC Cartridge Fuse
standard.
• Desiged to International (IEC) Standard for use globally.
Meets the IEC 60127-2, Sheet 5 specification for time-
lag fuses
• Available in Cartridge form
• RoHS compliant and lead-free
• Low magnetic susceptibility
Description
Application testing is strongly recommended.
Additional Information
Datasheet Samples
Resources Accessories
For recommended fuse accessories for this product series,
see ‘Recommended Accessories’ section.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/23/17
Axial Lead & Cartridge Fuses
5×20 mm > Audio & Medical > 285 Series
Average Time Current CurvesTemperature Re-rating Curve
Amp Code
Amp
Rating
(A)
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
I2t (A2 Sec.)
Nominal
Voltage Drop
at Rated
Current (mV)
Nominal
Power
Dissipation
at Rated
Current (W)
Agency
Approvals
.125 0.125 250
1500A @
250VAC
13.1240 0.028 2600 1. 6
.315 0.315 250 0.9275 0.625 110 0 1. 6
.500 0.5 250 1.1215 0.3 850 1. 6
0 01. 1 250 0.1455 1. 6 350 2.5 x
01. 6 1. 6 250 0.0706 7.168 200 2.5 x
002. 2 250 0.0546 10.8 190 2.5 x
02.5 2.5 250 0.0384 25.625 180 2.5 x
3.15 3.15 250 0.0269 51.597 140 4 x
005. 5 250 0.0141 70 100 4 x
06.3 6.3 250 0.0107 130.977 100 4 x
008. 8 250 0.0089 224 100 4 x
010. 10 250 0.0065 361 100 4 x
015. 15 250 500A @ 250VAC 0.0031 1305 100 4 x
020. 20 250 400A @ 250VAC 0.0024 3225.6 100 4 x
Electrical Characteristics Specification by Item
PS
E
Time (seconds)
285.125
28501.6
285002.
28502.5
2853.15
285005.
28506.3.
285010.
285008.
285015.
285020.
285.315
285.500
285001.
Amps
0.01 0.1 1 10 100 1000
10000
1000
100
10
1
0.1
0.01
0.001
-60˚C
140
120
100
80
60
40
20
-76˚F
-40˚C
-40˚F
-20˚C
-4˚F
0˚C
32˚F
20˚C
68˚F
40˚C
-104˚F
60˚C
140˚F
80˚C
176˚F
100˚C
212˚F
120˚C
248˚F
AMBIENT TEMPERATURE
PERCENT OF RATING
25˚C
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/23/17
Axial Lead & Cartridge Fuses
5×20 mm > Audio & Medical > 285 Series
Materials Body : Ceramic
Cap : Gold / Rhodium-plated brass
Terminal
Strength
MIL- STD-202, Method 211,
Test condition A
Product Marking Cap 1: Brand logo, current and voltage rating
Cap 2: Agency approval markings
Product Characteristics
Operating
Temperature –55ºC to +125ºC
Thermal Shock MIL- STD-202, Method 107,
Test Condition B: (5 cycles –65ºC to +125ºC)
Vibration MIL- STD-202, Method 201
Humidity
MIL- STD-202, Method 103,
Test condition A: High RH (95%) and
elevated temp. (40ºC) for 240 hours
Salt Spray MIL- STD-202, Method 101,
Test condition B
Dimensions
Packaging
Packaging Option Packaging Specification Quantity Quantity &
Packaging Code Taping Width
285 Series
Bulk N/A 100 HX N/A
Bulk N/A 1000 MX N/A
Part Numbering System
0285.125 XP/XRP
to
0285020 XP/XRP
20+0.5
5.1+0.6
5.2+0.1
-0.2
5.1+0.6
All dimensions in mm
0285 xxxx M X (R) P
Lead Free
Option Codes
Package Code
Quantity Code
Current Rating Code
Series
Blank = Gold-plated caps
R = Rhodium-plated caps
X = Filler
M = 1000
H = 100
Refer to Amp Code column of
Electrical Characteristics Table
Recommended Accessories
Accessory
Type Series Description
Max
Application
Voltage
Max
Application
Amperage
Holder
345_ISF Panel Mount Shock-Safe Fuseholder
250
10
345 Shock-Safe Fuseholder with PC Mount, Solder Mount and Panel Mount options 20
830 PC Mount Shock-Safe Miniature Fuseholder 16
Block
520 Metric OMNI-BLOK® Fuse Block 10
646 PC Mount Miniature Fuse Block 6.3
658 Surface Mount Miniature Fuse Block 10
Clip
520_W PC Mount Miniature Fuse Clip 6.3
111 PC Board Mount Fuse Clip 10
445 PC Board Mount Fuse Clip 10
Notes:
1. Do not use in applications above rating.
2. Please refer to fuseholder data sheet for specific re-rating information.
3. Please contact factory for applications greater than the max voltage and amperage shown.
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.
