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Series 875, 877 Single Pigtail Fuses

First Real 3.6mm x 10mm Single Pigtail Fuse on the Market!

Littelfuse Series 875 and 877 are the first real 3.6mm x 10mm fuses on the market. The more compact footprint was made possible by doing away with conventional over-capping (single pigtail) while achieving higher I 2 T values for the majority ampere ratings relative to the existing offerings in the market. These axial lead, Slo - Blo ®, Single Pigtail Fuses are ideal for electronic circuit designers who would like to optimize PCB board space and for electronic manufacturing purchasing agents and existing customers who are looking for alternative circuit protection solutions. Applications for the space saving fuses are lighting, power supply, and adapter applications.


Series 875

Series 877
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  • Designed to UL/CSA 248 Standard
  • Available in ratings of 0.10 to 10 Amperes
  • Electrical Characteristics
    • 100% of Ampere Rating for 4 Hours Minimum Opening Time
    • 200% of Ampere Rating for 60 Seconds Maximum Opening Time
  • Materials
  • Operating Temperature -55ºC to 125ºC

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  • Designed to Meet IEC 60127-3 Standard Sheet 4
  • Available in ratings of 2 to 6.3 Amperes
  • Electrical Characteristics
    • 150% of Ampere Rating for 60 Minutes Minimum
    • 210% of Ampere Rating for 2 Minutes Maximum
    • 275% of Ampere Rating for 400ms Minimum; 10 Seconds Maximum
    • 400% of Ampere Rating for 150ms Minimum; 3 Seconds Maximum
    • 1000% of Ampere Rating for 20ms Minimum; 150ms Maximum
  • Materials
    • Ceramic Body
    • Nickel Plated Brass Cap
    • Tin Plated Copper
  • Operating Temperature -55ºC to 125ºC
Electrical Characteristics - Series 875

Amp Code

Ampere Rating (A)

Voltage Rating (V)

Interrupting Rating

Nominal Cold Resistance (Ohms)
Nominal Melting
I 2 t (A 2 sec)
Agency Approvals

.100 0.100 250











50A @ 250 VAC
2.90 0.0054 x
.125 0.125 250 1.850 0.0072 x
.200 0.200 250 0.920 0.0165 x
.250 0.250 250 0.6575 0.038 x
.300 0.300 250 0.435 0.043 x
.400 0.400 250 0.321 0.136 x
.500 0.500 250 0.256 0.288 x
.600 0.600 250 0.151 0.611 x
.800 0.800 250 0.116 0.919 x
001. 1.0 250 0.095 1.503 x
01.5 1.5 250 0.0519 4.33 x
01.6 1.6 250 0.0476 5.08 x
002. 2.00 250 0.02887 8.45 x
02.5 2.50 250 0.02246 17.85 x
003. 3.00 250 0.0171 24.5 x
004. 4.00 250 0.0135 42.45 x
005. 5.00 250 0.00954 60.9 x
006. 6.00 250 0.00891 72.3 x
007. 7.00 250 0.008 106.8 x
008. 8.00 250 0.0077 134.59 x
010. 10.00 250 0.00675 208.00 x
Notes: cold resistance measured at less than 10% of rated current at 23ºC

Electrical Characteristics - Series 877

Amp Code
Ampere Rating (A)

Voltage Rating (V)
Interrupting Rating
Nominal Cold Resistance (Ohms)
Nominal Melting I 2 t(A 2 sec)
Nominal Power Dissipation (mW)
Agency Approvals
002. 2.0 250 35A @ 250 V AC 0.035 24.6 450 x x
3.15 3.15 250 35A @ 250 V AC 0.020 67.6 690 x x
004. 4.0 250 40A @ 250 V AC 0.0167 143.4 926 x x
06.3 6.3 250 63A @ 250V AC 0.0087 190 1130 x x
Notes: cold resistance measured at less than 10% of rated current at 23ºC.