Littelfuse 0476008.MR Surface Mount Board Mount Fuse 8A 125VAC/VDC Equivalent & Substitute Parts

Part Overview

The Littelfuse 0476008.MR is an 8A 125VAC/VDC surface mount board mount fuse in the NANO²®476 series, designed for fast-blow protection in compact 2-SMD square end block packaging. This part is currently active in production with cURus approval agency certification. Equivalent substitute parts are available from the NANO²® product family to support design flexibility, inventory optimization, and supply chain continuity.

Key Parameters

Parameter	Value
Current Rating	8 A
Voltage Rating AC	125 V
Voltage Rating DC	125 V
Response Time	Fast Blow
Mounting Type	Surface Mount
Package / Case	2-SMD, Square End Block
Size / Dimension	0.240" L x 0.106" W x 0.106" H (6.10mm x 2.69mm x 2.69mm)
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 0476008.MR are qualified based on the following electrical and mechanical parameters:

Current Rating: 8 A (exact match required)
Voltage Rating: 125 V AC / 125 V DC (exact match required)
Response Time: Fast Blow (exact match required)
Mounting Type: Surface Mount (exact match required)
Package / Case: 2-SMD, Square End Block (exact match required)
Physical Dimensions: 0.240" L x 0.106" W x 0.106" H (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)
RoHS Compliance: ROHS3 Compliant (exact match required)

All substitute parts listed below meet these core electrical and mechanical requirements and are manufactured by Littelfuse Inc. within the NANO²® product family. Variations in breaking capacity, melting I²t, DC cold resistance, and approval agency certifications do not disqualify substitution when the above parameters are identical.

Parameter Comparison

Part Number	Series	Current Rating	Voltage AC/DC	Response Time	Package	Dimensions	Operating Temp	Breaking Capacity	Melting I²t	DC Cold Resistance	Packaging Type	Inventory Status
0476008.MR	NANO²®476	8 A	125V / 125V	Fast Blow	2-SMD, Square End Block	0.240" x 0.106" x 0.106" (6.10mm x 2.69mm x 2.69mm)	-55°C ~ 125°C	100A AC, 300A DC	9.757	0.0112 Ohms	Tape & Reel (TR)	925 Pcs New Original
0448008.MR	NANO²®448	8 A	125V / 125V	Fast Blow	2-SMD, Square End Block	0.240" x 0.106" x 0.106" (6.10mm x 2.69mm x 2.69mm)	-55°C ~ 125°C	50A AC	18.33	0.0078 Ohms	Tape & Reel (TR)	2200 Pcs New Original
0451008.MRL	NANO²®451	8 A	125V / 125V	Fast Blow	2-SMD, Square End Block	0.240" x 0.106" x 0.106" (6.10mm x 2.69mm x 2.69mm)	-55°C ~ 125°C	50A AC	20.23	0.0077 Ohms	Cut Tape (CT) & Digi-Reel®	60400 Pcs New Original
0451008.MRSN	NANO²®451	8 A	125V / 125V	Fast Blow	2-SMD, Square End Block	0.240" x 0.106" x 0.106" (6.10mm x 2.69mm x 2.69mm)	-55°C ~ 125°C	50A AC	20.23	0.0077 Ohms	Tape & Reel (TR)	1838 Pcs New Original
0453008.MR	NANO²®453	8 A	125V / 125V	Fast Blow	2-SMD, Square End Block	0.240" x 0.106" x 0.106" (6.10mm x 2.69mm x 2.69mm)	-55°C ~ 125°C	50A AC	20.23	0.0077 Ohms	Tape & Reel (TR)	10985 Pcs New Original

Engineering Selection Recommendations

All substitute parts listed are active production components manufactured by Littelfuse Inc. and comply with ROHS3 requirements. Selection among equivalent parts should be based on:

Packaging format availability: 0451008.MRL is available in Cut Tape (CT) & Digi-Reel® format, while 0476008.MR, 0448008.MR, 0451008.MRSN, and 0453008.MR are supplied in Tape & Reel (TR) format.
Inventory availability: 0451008.MRL offers the highest stock level at 60400 pieces, followed by 0453008.MR at 10985 pieces.
Approval agency certifications: 0476008.MR carries cURus certification; 0448008.MR, 0451008.MRL, and 0453008.MR carry CSA, UL, and PSE certifications; 0451008.MRSN carries CSA, METI, and UR certifications.

All parts are electrically and mechanically interchangeable for applications requiring 8A 125VAC/VDC fast-blow surface mount board mount fuse protection in 2-SMD square end block packaging.

Frequently Asked Questions (FAQ)

Q: Can I substitute 0448008.MR for 0476008.MR in my design?

A: Yes. Both parts meet the core electrical and mechanical requirements: 8A current rating, 125V AC/DC voltage rating, fast-blow response, surface mount configuration, 2-SMD square end block package, and identical physical dimensions. The parts differ in breaking capacity and melting I²t specifications, which do not affect interchangeability when the primary protection parameters are identical.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on a reel, suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® packaging provides components on cut tape segments, offering flexibility for lower-volume or mixed-component assembly operations. Both packaging formats contain identical components; the difference is in delivery and handling format only.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed—0476008.MR, 0448008.MR, 0451008.MRL, 0451008.MRSN, and 0453008.MR—are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited) rating.

Q: Which substitute part has the highest inventory availability?

A: The 0451008.MRL has the highest inventory at 60400 pieces in stock, followed by 0453008.MR at 10985 pieces. Both are suitable for immediate procurement.

Q: Do all substitute parts have the same approval agency certifications?

A: No. Approval agency certifications vary: 0476008.MR carries cURus; 0448008.MR, 0451008.MRL, and 0453008.MR carry CSA, UL, and PSE; 0451008.MRSN carries CSA, METI, and UR. Verify that the selected part's certifications meet your application and regional compliance requirements.

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