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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
5×20mm > Medium Acting > 201P Series
Cartridge and Axial Lead Fuses
Product Characteristics
Operating Temperature -25ºC to +70ºC
Climatic Category -25ºC/+70ºC/21 days (IEC 60068-1-3)
Stock Conditions
-10ºC to +60ºC RH,
≤ 75% yearly average, without dew,
maximum value for 30 days-95%
Vibration Resistance
24 cycles at 15 min. each
(IEC 60068-2-6)
10 - 60 Hz at 0.75 mm amplitude
60 - 2000 Hz at 10 g acceleration
max. 5.5
0.65
+0.04/-0.01
20 +0.5/-0.5
21 +0.5/-0.5
103.5 max.
Ø 5.2
+0.1/-0.2
Ø 5.9
Optional Holders
Materials
Body: Glass
End Caps: Nickel–plated brass
Optional Holders: Nickel-plated caps
Tin-plated wires
Product
Marking
Cap1: Brand mark, current and voltage ratings
Cap2: Series and agency approval marks
Solderability MIL-STD-202, Method 208
Soldering Heat
Resistance
260ºC, 10 sec. (IEC 60068-2-20)
Dimensions
Packaging Code Packing Option Quantity
00 Bulk 1000
02 Bulk 100
30 Bulk with Four Color Code 1000
43 Tape and Reel 1250
53 Tape and Reel with Four Color Code 1250
Packaging
Part Numbering System
201 xxxx 0 xx 1 P
Current Rating Code
Series
Refer to Amp Code column of
Electrical Characteristics Table
Packaging Code
Refer to below Packaging
Filler
Filler
Lead-free
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.