4 A Fuses

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Mounting Type	Fuse Type	Current Rating (Amps)	Voltage Rating - AC	Voltage Rating - DC	Response Time	Package / Case	Breaking Capacity @ Rated Voltage	Melting I²t	Approval Agency	Operating Temperature	Color	Size / Dimension
0685T4000-01 FUSE BRD MNT 4A 63VAC 63VDC 1206 Bel Fuse Inc.	82,094 In Stock	1 : $2.94000 Cut Tape (CT) 5,000 : $1.09343 Tape & Reel (TR)	C1T	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	63 V	63 V	Slow Blow	1206 (3216 Metric)	50A	2.56	AEC-Q200, CE, cURus	-55°C ~ 125°C	-	0.126" L x 0.062" W x 0.025" H (3.20mm x 1.58mm x 0.63mm)
C2Q 4 FUSE BRD MNT 4A 32VAC 63VDC 0603 Bel Fuse Inc.	140,845 In Stock	1 : $3.02000 Cut Tape (CT) 5,000 : $1.10662 Tape & Reel (TR)	C2Q	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	32 V	63 V	Fast Blow	0603 (1608 Metric)	35A AC, 50A DC	0.63	CE, cURus	-55°C ~ 125°C	-	0.063" L x 0.032" W x 0.019" H (1.60mm x 0.82mm x 0.48mm)
C1Q 4 FUSE BOARD MOUNT 4A 125VAC 63VDC Bel Fuse Inc.	44,702 In Stock	1 : $3.02000 Cut Tape (CT) 5,000 : $1.13075 Tape & Reel (TR)	C1Q	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	125 V	63 V	Fast Blow	1206 (3216 Metric)	100A AC, 50A DC	0.038	CE, CSA, cULus	-55°C ~ 125°C	-	0.126" L x 0.062" W x 0.023" H (3.20mm x 1.58mm x 0.58mm)
0034.3123 FUSE GLASS 4A 250VAC 5X20MM SCHURTER Inc.	42,143 In Stock	1 : $3.59000 Bulk	FST 5x20	Bulk	Active	Requires Holder	Cartridge, Glass	4 A	250 V	-	Slow Blow	5mm x 20mm	40A	68.3	CCC, cURus, PSE/JET, VDE	-55°C ~ 125°C	-	0.205" Dia x 0.787" L (5.20mm x 20.00mm)
SF-0603S400-2 FUSE BOARD MOUNT 4A 32VDC 0603 Bourns Inc.	5,858 In Stock	1 : $5.14000 Cut Tape (CT) 5,000 : $1.94164 Tape & Reel (TR)	SinglFuse™ SF-0603S	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	-	32 V	Slow Blow	0603 (1608 Metric)	50A	0.326	UL	-20°C ~ 105°C	-	0.063" L x 0.032" W x 0.018" H (1.60mm x 0.80mm x 0.45mm)
0680L4000-05 FUSE BRD MNT 4A 125VAC/VDC 2SMD Bel Fuse Inc.	57,324 In Stock	1 : $5.71000 Cut Tape (CT) 5,000 : $2.10675 Tape & Reel (TR)	0680L	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	125 V	125 V	Slow Blow	2-SMD, Square End Block	50A AC, 100A DC	24.0	AEC-Q200, CE, cURus	-55°C ~ 125°C	-	0.240" L x 0.100" W x 0.100" H (6.10mm x 2.54mm x 2.54mm)
SF-0603SP400M-2 FUSE BOARD MOUNT 4A 32VDC 0603 Bourns Inc.	5,968 In Stock	1 : $5.96000 Cut Tape (CT) 4,000 : $2.32446 Tape & Reel (TR)	SinglFuse™ SF-0603SPxxxM	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	-	32 V	Slow Blow	0603 (1608 Metric)	50A	2.3	-	-55°C ~ 150°C	-	0.063" L x 0.031" W x 0.031" H (1.60mm x 0.80mm x 0.80mm)
8020.5017.G FUSE CERM 4A 500VAC 400VDC 3AB SCHURTER Inc.	1,514 In Stock	1 : $6.77000 Bulk	SHT 6.3X32	Bulk	Active	Requires Holder	Cartridge, Ceramic	4 A	500 V	400 V	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	1.5kA	71.4	cURus	-40°C ~ 85°C	-	0.250" Dia x 1.252" L (6.35mm x 31.80mm)
SF-0402S400-2 FUSE BOARD MOUNT 4A 24VDC 0402 Bourns Inc.	7,217 In Stock	1 : $7.75000 Cut Tape (CT) 10,000 : $2.65151 Tape & Reel (TR)	SinglFuse™ SF-0402S	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	-	24 V	Slow Blow	0402 (1005 Metric)	35A	0.1145	UL	-40°C ~ 105°C	-	0.039" L x 0.020" W x 0.014" H (1.00mm x 0.52mm x 0.35mm)
0234004.MXP FUSE CERAMIC 4A 250VAC 5X20MM Littelfuse Inc.	4,162 In Stock	1 : $9.71000 Bulk	234	Bulk	Active	Requires Holder	Cartridge, Ceramic	4 A	250 V	-	Medium Blow	5mm x 20mm	200A	10.37	CE, CSA, K-MARK, PSE, UL	-55°C ~ 125°C	-	0.205" Dia x 0.787" L (5.20mm x 20.00mm)
3404.2422.11 FUSE BRD MT 4A 277VAC 250VDC SMD SCHURTER Inc.	13,175 In Stock	1 : $9.87000 Strip	UMZ 250	Strip	Active	Requires Holder, Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	277 V	250 V	Slow Blow	2-SMD, Square End Block with Clip	200A AC, 35A DC	26.0	cURus, VDE	-40°C ~ 85°C	-	0.445" L x 0.165" W x 0.157" H (11.30mm x 4.20mm x 4.00mm)
0435004.KR FUSE BOARD MOUNT 4A 32VDC 0402 Littelfuse Inc.	10,756 In Stock	1 : $10.03000 Cut Tape (CT) 10,000 : $4.31075 Tape & Reel (TR)	435	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	-	32 V	Fast Blow	0402 (1005 Metric)	35A	0.3084	CSA, UL	-55°C ~ 90°C	-	0.039" L x 0.020" W x 0.013" H (1.00mm x 0.51mm x 0.33mm)
0218004.HXP FUSE GLASS 4A 250VAC 5X20MM Littelfuse Inc.	2,955 In Stock	1 : $10.20000 Bulk	218	Bulk	Active	Requires Holder	Cartridge, Glass	4 A	250 V	-	Slow Blow	5mm x 20mm	40A	69.1	CCC, CE, CSA, K-MARK, PSE, SEMKO, UL, VDE	-55°C ~ 125°C	-	0.205" Dia x 0.787" L (5.20mm x 20.00mm)
3403.0280.23 FUSE BRD MT 4A 277VAC 125VDC SMD SCHURTER Inc.	9,204 In Stock	1 : $10.52000 Cut Tape (CT) 1,500 : $9.74941 Tape & Reel (TR)	UMT-H	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	277 V	125 V	Slow Blow	2-SMD, Square End Block	1.5kA	48.0	CQC, cURus, VDE	-55°C ~ 125°C	-	0.606" L x 0.211" W x 0.211" H (15.40mm x 5.35mm x 5.35mm)
0467004.NR FUSE BRD MNT 4A 32VAC 32VDC 0603 Littelfuse Inc.	7,566 In Stock	1 : $10.85000 Cut Tape (CT) 5,000 : $4.31076 Tape & Reel (TR)	467	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	32 V	32 V	Fast Blow	0603 (1608 Metric)	35A	0.841	CSA, UL	-55°C ~ 90°C	-	0.063" L x 0.032" W x 0.012" H (1.60mm x 0.81mm x 0.31mm)
0451004.MRL FUSE BRD MNT 4A 125VAC/VDC 2SMD Littelfuse Inc.	9,443 In Stock	1 : $11.26000 Cut Tape (CT) 1,000 : $5.13072 Tape & Reel (TR)	NANO²® 451	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	125 V	125 V	Fast Blow	2-SMD, Square End Block	50A	3.152	CSA, PSE, UL	-55°C ~ 125°C	-	0.240" L x 0.106" W x 0.106" H (6.10mm x 2.69mm x 2.69mm)
0458004.DR FUSE BRD MNT 4A 32VAC 75VDC 1206 Littelfuse Inc.	6,843 In Stock	1 : $13.05000 Cut Tape (CT) 1,500 : $5.56758 Tape & Reel (TR)	NANO²® 458	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	32 V	75 V	Fast Blow	1206 (3216 Metric)	50A	4.832	cULus	-55°C ~ 125°C	-	0.125" L x 0.062" W x 0.062" H (3.18mm x 1.58mm x 1.58mm)
0215004.HXP FUSE CRMC 4A 250V 5X20MM 1=1PC Littelfuse Inc.	11,824 In Stock	1 : $13.54000 Bulk	215	Bulk	Active	Requires Holder	Cartridge, Ceramic	4 A	250 V	-	Slow Blow	5mm x 20mm	1.5kA	46.96	CCC, CE, CSA, KC, PSE, SEMKO, UL, VDE	-55°C ~ 125°C	-	0.205" Dia x 0.787" L (5.20mm x 20.00mm)
0477004.MXP FUSE CERM 4A 500VAC 400VDC 5X20 Littelfuse Inc.	73,176 In Stock	1 : $14.77000 Bulk	477	Bulk	Active	Requires Holder	Cartridge, Ceramic	4 A	500 V	400 V	Slow Blow	5mm x 20mm	100A AC, 500A DC	52.48	cULus, PSE, SEMKO	-55°C ~ 125°C	-	0.205" Dia x 0.787" L (5.20mm x 20.00mm)
0452004.MRL FUSE BRD MNT 4A 125VAC/VDC 2SMD Littelfuse Inc.	66,012 In Stock	1 : $14.85000 Cut Tape (CT) 1,000 : $6.76152 Tape & Reel (TR)	NANO²® 452	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	125 V	125 V	Slow Blow	2-SMD, Square End Block	50A	34.4	CSA, PSE, UR	-55°C ~ 125°C	-	0.240" L x 0.106" W x 0.106" H (6.10mm x 2.69mm x 2.69mm)
0473004.MRT1L FUSE BRD MNT 4A 125VAC/VDC AXIAL Littelfuse Inc.	1,238 In Stock	1 : $16.72000 Cut Tape (CT) 1,000 : $7.54204 Tape & Reel (TR)	PICO® II 473	Tape & Reel (TR) Cut Tape (CT)	Active	Through Hole	Board Mount (Cartridge Style Excluded)	4 A	125 V	125 V	Slow Blow	Axial	50A	35.0	CSA, PSE, UR	-55°C ~ 125°C	-	0.135" Dia x 0.280" L (3.43mm x 7.11mm)
0477004.MXEP FUSE CERM 4A 500VAC 400VDC 5X20 Littelfuse Inc.	12,609 In Stock	1 : $20.07000 Bulk	477	Bulk	Active	Through Hole	Cartridge, Ceramic	4 A	500 V	400 V	Slow Blow	5mm x 20mm (Axial)	100A AC, 500A DC	52.48	cULus, PSE, SEMKO	-55°C ~ 125°C	-	0.228" Dia x 0.886" L (5.80mm x 22.50mm)
0154004.DR FUSE BRD MNT 4A 125VAC/VDC 2SMD Littelfuse Inc.	1,990 In Stock	1 : $22.11000 Cut Tape (CT) 1,500 : $9.46386 Tape & Reel (TR)	OMNI-BLOK® 154	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Requires Holder, Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	125 V	125 V	Fast Blow	2-SMD, Square End Block with Holder	50A	3.152	PSE, UL	-55°C ~ 125°C	-	0.383" L x 0.198" W x 0.150" H (9.73mm x 5.03mm x 3.81mm)
0460004.UR FUSE BRD MNT 4A 125VAC/VDC 2SMD Littelfuse Inc.	1,753 In Stock	1 : $23.66000 Cut Tape (CT) 500 : $11.71724 Tape & Reel (TR)	PICO® 460	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	125 V	125 V	Slow Blow	2-SMD, J-Lead	50A	35.0	CSA, PSE, UL	-55°C ~ 125°C	-	0.285" L x 0.170" W x 0.120" H (7.24mm x 4.32mm x 3.05mm)
0154004.DRT FUSE BRD MNT 4A 125VAC/VDC 2SMD Littelfuse Inc.	984 In Stock	1 : $27.90000 Cut Tape (CT) 1,500 : $12.23879 Tape & Reel (TR)	OMNI-BLOK® 154T	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Requires Holder, Surface Mount	Board Mount (Cartridge Style Excluded)	4 A	125 V	125 V	Slow Blow	2-SMD, Square End Block with Holder	50A	34.4	PSE, UL	-55°C ~ 125°C	-	0.383" L x 0.198" W x 0.150" H (9.73mm x 5.03mm x 3.81mm)

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A fuse is a device designed to stop current flow when it exceeds a certain limit (overcurrent protection). The devices works by creating an opening in a material situated between two end terminals. The material will melt (blow) from an increase in heat generated by the device as the current flow changes. The amount of time it takes the device to blow is often defined as fast or slow-blow.

4 A Fuses

4 A Fuses

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