Surface Mount Fuses – Mouser Puerto Rico

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437 Series SMT Fuses

Littelfuse 437 Series SMT Fuses protect circuits against overcurrent in ambient high-temperature situations. These ceramic fuses operate bewteen -55° and +150°C temperatures, providing both high I²t values and inrush current withstand capabilities. The halogen-free 437 series gives users a high performance reliability, with models ranging from 250mA to 8A current rating. These Littelfuse fast-acting, surface mount fuses are suitable for both leaded and lead-free reflow as well as wave soldering. 437 series fuses are ideal for servers, printers, scanners, data modems, LCD displays, and LED lighting applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Product	Fuse Type	Current Rating	Voltage Rating AC	Voltage Rating DC	Interrupt Rating	Fuse Size / Group	Minimum Operating Temperature	Maximum Operating Temperature	Qualification	Packaging	Resistance
Surface Mount Fuses 63V 1.25A FA 1206 04371.25WR Littelfuse 1: $1.31 A tariff of 10% may be applied if shipping to the United States. 3,028In Stock	Mfr. Part # 04371.25WR Mouser Part # 576-04371.25WR	Littelfuse	Surface Mount Fuses 63V 1.25A FA 1206 Learn More about Littelfuse 437 smt fuses	Datasheet	3,028In Stock	Cut Tape $1.31 $1.16 $1.09 $0.929 View Reel $0.627 $0.851 $0.804 $0.738 $0.694 $0.627 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	1.25 A	63 VAC	63 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	318 mOhms
Surface Mount Fuses 63V 1.75A FA 1206 04371.75WR Littelfuse 1: $1.56 A tariff of 10% may be applied if shipping to the United States. 6,418In Stock	Mfr. Part # 04371.75WR Mouser Part # 576-04371.75WR	Littelfuse	Surface Mount Fuses 63V 1.75A FA 1206 Learn More about Littelfuse 437 smt fuses	Datasheet	6,418In Stock	Cut Tape $1.56 $1.38 $1.31 $1.06 View Reel $0.627 $0.908 $0.869 $0.753 $0.694 $0.627 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	1.75 A	63 VAC	63 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	71 mOhms
Surface Mount Fuses 125V .375A FA 1206 0437.375WR Littelfuse 1: $1.31 A tariff of 10% may be applied if shipping to the United States. 9,768In Stock	Mfr. Part # 0437.375WR Mouser Part # 576-0437.375WR	Littelfuse	Surface Mount Fuses 125V .375A FA 1206 Learn More about Littelfuse 437 smt fuses	Datasheet	9,768In Stock	Cut Tape $1.31 $1.18 $1.09 $0.641 View Reel $0.501 $0.571 $0.536 $0.502 $0.501 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	375 mA	125 VAC	125 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	1.33 Ohms
Surface Mount Fuses 32V FA 1206 3.5A 043703.5WR Littelfuse 1: $1.55 A tariff of 10% may be applied if shipping to the United States. 3,405In Stock	Mfr. Part # 043703.5WR Mouser Part # 576-043703.5WR	Littelfuse	Surface Mount Fuses 32V FA 1206 3.5A Learn More about Littelfuse 437 smt fuses	Datasheet	3,405In Stock	Cut Tape $1.55 $1.29 $1.19 $0.984 View Reel $0.627 $0.908 $0.816 $0.752 $0.649 $0.627 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	3.5 A	45 VAC	63 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	27 mOhms
Surface Mount Fuses 125V .250A FA 1206 0437.250WR Littelfuse 1: $1.26 A tariff of 10% may be applied if shipping to the United States. 22,011In Stock 18,000On Order	Mfr. Part # 0437.250WR Mouser Part # 576-0437.250WR	Littelfuse	Surface Mount Fuses 125V .250A FA 1206 Learn More about Littelfuse 437 smt fuses	Datasheet	22,011In Stock 18,000On Order On Order Ship Dates Mfr. #: 0437.250WR Stock: 22,011 Can Ship Immediately On Order: 9,000 Expected 10/26/2026 9,000 Expected 1/5/2027 Factory Lead-Time: 27 Weeks	Cut Tape $1.26 $1.13 $1.07 $0.922 View Reel $0.573 $0.845 $0.776 $0.705 $0.65 $0.573 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	250 mA	125 VAC	125 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	2.29 Ohms
Surface Mount Fuses .375A 125V AECQ 0437.375WRA Littelfuse 1: $1.75 A tariff of 10% may be applied if shipping to the United States. 15,742In Stock	Mfr. Part # 0437.375WRA Mouser Part # 576-0437.375WRA	Littelfuse	Surface Mount Fuses .375A 125V AECQ	Datasheet	15,742In Stock	Cut Tape $1.75 $1.50 $1.41 $1.15 View Reel $0.752 $1.02 $0.947 $0.845 $0.779 $0.752 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Fuses	Fast Blow	375 mA	125 VAC	125 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C	AEC-Q200	Reel, Cut Tape, MouseReel	1.33 Ohms
Surface Mount Fuses 63V .500A FA 1206 0437.500WR Littelfuse 1: $1.42 A tariff of 10% may be applied if shipping to the United States. 5,640In Stock 6,000Expected 9/29/2026	Mfr. Part # 0437.500WR Mouser Part # 576-0437.500WR	Littelfuse	Surface Mount Fuses 63V .500A FA 1206 Learn More about Littelfuse 437 smt fuses	Datasheet	5,640In Stock 6,000Expected 9/29/2026	Cut Tape $1.42 $1.23 $1.12 $0.936 View Reel $0.573 $0.838 $0.773 $0.698 $0.65 $0.573 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	500 mA	63 VAC	63 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	908 mOhms
Surface Mount Fuses 63V .750A FA 1206 0437.750WR Littelfuse 1: $1.73 A tariff of 10% may be applied if shipping to the United States. 3,562In Stock	Mfr. Part # 0437.750WR Mouser Part # 576-0437.750WR	Littelfuse	Surface Mount Fuses 63V .750A FA 1206 Learn More about Littelfuse 437 smt fuses	Datasheet	3,562In Stock	Cut Tape $1.73 $1.50 $1.38 $1.10 View Reel $0.718 $0.949 $0.869 $0.78 $0.723 $0.718 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	750 mA	63 VAC	63 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	665 mOhms
Surface Mount Fuses 63V FA 1206 1A 0437001.WR Littelfuse 1: $1.71 A tariff of 10% may be applied if shipping to the United States. 13,020In Stock 21,000Expected 11/23/2026	Mfr. Part # 0437001.WR Mouser Part # 576-0437001.WR	Littelfuse	Surface Mount Fuses 63V FA 1206 1A Learn More about Littelfuse 437 smt fuses	Datasheet	13,020In Stock 21,000Expected 11/23/2026	Cut Tape $1.71 $1.50 $1.36 $1.15 View Reel $0.718 $1.01 $0.929 $0.841 $0.789 $0.718 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	1 A	63 VAC	63 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	360 mOhms
Surface Mount Fuses 63V FA 1206 2A 0437002.WR Littelfuse 1: $1.25 A tariff of 10% may be applied if shipping to the United States. 12,057In Stock	Mfr. Part # 0437002.WR Mouser Part # 576-0437002.WR	Littelfuse	Surface Mount Fuses 63V FA 1206 2A Learn More about Littelfuse 437 smt fuses	Datasheet	12,057In Stock	Cut Tape $1.25 $1.10 $0.941 $0.806 View Reel $0.628 $0.666 $0.628 $0.628 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	2 A	63 VAC	63 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	62 mOhms
Surface Mount Fuses 63V FA 1206 1.5A 043701.5WR Littelfuse 1: $1.67 A tariff of 10% may be applied if shipping to the United States. 2,564In Stock	Mfr. Part # 043701.5WR Mouser Part # 576-043701.5WR	Littelfuse	Surface Mount Fuses 63V FA 1206 1.5A Learn More about Littelfuse 437 smt fuses	Datasheet	2,564In Stock	Cut Tape $1.67 $1.50 $1.34 $1.15 View Reel $0.718 $0.995 $0.924 $0.833 $0.791 $0.718 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	1.5 A	63 VAC	63 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	209 mOhms
Surface Mount Fuses 32V FA 1206 2.5A 043702.5WR Littelfuse 1: $1.73 A tariff of 10% may be applied if shipping to the United States. 3,707In Stock	Mfr. Part # 043702.5WR Mouser Part # 576-043702.5WR	Littelfuse	Surface Mount Fuses 32V FA 1206 2.5A Learn More about Littelfuse 437 smt fuses	Datasheet	3,707In Stock	Cut Tape $1.73 $1.50 $1.38 $1.15 View Reel $0.718 $1.03 $0.947 $0.859 $0.798 $0.718 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	2.5 A	45 VAC	63 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	43 mOhms
Surface Mount Fuses FUSE 125V FA 1206 .250A AECQ 0437.250WRA Littelfuse 1: $1.62 A tariff of 10% may be applied if shipping to the United States. 190In Stock 18,000On Order	Mfr. Part # 0437.250WRA Mouser Part # 576-0437.250WRA	Littelfuse	Surface Mount Fuses FUSE 125V FA 1206 .250A AECQ	Datasheet	190In Stock 18,000On Order On Order Ship Dates Mfr. #: 0437.250WRA Stock: 190 Can Ship Immediately On Order: 3,000 Expected 1/12/2027 6,000 Expected 3/24/2027 9,000 Expected 3/29/2027 Factory Lead-Time: 21 Weeks	Cut Tape $1.62 $1.35 $1.24 $1.03 View Reel $0.752 $0.948 $0.852 $0.785 $0.752 $0.752 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Fuses	Fast Blow	250 mA	125 VAC	125 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C	AEC-Q200	Reel, Cut Tape, MouseReel	2.29 Ohms
Surface Mount Fuses 32V FA 1206 3A 0437003.WR Littelfuse 1: $1.67 A tariff of 10% may be applied if shipping to the United States. 3,416In Stock 6,985On Order	Mfr. Part # 0437003.WR Mouser Part # 576-0437003.WR	Littelfuse	Surface Mount Fuses 32V FA 1206 3A Learn More about Littelfuse 437 smt fuses	Datasheet	3,416In Stock 6,985On Order On Order Ship Dates Mfr. #: 0437003.WR Stock: 3,416 Can Ship Immediately On Order: 985 Expected 10/26/2026 6,000 Expected 5/4/2027 Factory Lead-Time: 27 Weeks	Cut Tape $1.67 $1.50 $1.35 $1.15 View Reel $0.718 $0.999 $0.904 $0.818 $0.756 $0.718 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	3 A	32 VAC	35 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	33 mOhms
Surface Mount Fuses 32V FA 1206 4A 0437004.WR Littelfuse 1: $1.81 A tariff of 10% may be applied if shipping to the United States. 972In Stock 9,000On Order	Mfr. Part # 0437004.WR Mouser Part # 576-0437004.WR	Littelfuse	Surface Mount Fuses 32V FA 1206 4A Learn More about Littelfuse 437 smt fuses	Datasheet	972In Stock 9,000On Order On Order Ship Dates Mfr. #: 0437004.WR Stock: 972 Can Ship Immediately On Order: 3,000 Expected 11/9/2026 6,000 Expected 11/16/2026 Factory Lead-Time: 27 Weeks	Cut Tape $1.81 $1.53 $1.39 $1.18 View Reel $0.718 $1.06 $0.952 $0.878 $0.76 $0.718 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	4 A	32 VAC	32 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	22 mOhms
Surface Mount Fuses 32V FA 1206 7A 0437007.WR Littelfuse 1: $1.92 A tariff of 10% may be applied if shipping to the United States. 55In Stock 9,000On Order	Mfr. Part # 0437007.WR Mouser Part # 576-0437007.WR	Littelfuse	Surface Mount Fuses 32V FA 1206 7A Learn More about Littelfuse 437 smt fuses	Datasheet	55In Stock 9,000On Order On Order Ship Dates Mfr. #: 0437007.WR Stock: 55 Can Ship Immediately On Order: 3,000 Expected 2/2/2027 6,000 Expected 2/8/2027 Factory Lead-Time: 27 Weeks	Cut Tape $1.92 $1.59 $1.47 $1.22 View Reel $0.718 $1.13 $0.895 $0.775 $0.718 $0.718 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	7 A	32 VAC	35 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	10 mOhms
Surface Mount Fuses 32V FA 1206 8A 0437008.WR Littelfuse 1: $1.81 A tariff of 10% may be applied if shipping to the United States. 450In Stock 9,000On Order	Mfr. Part # 0437008.WR Mouser Part # 576-0437008.WR	Littelfuse	Surface Mount Fuses 32V FA 1206 8A Learn More about Littelfuse 437 smt fuses	Datasheet	450In Stock 9,000On Order On Order Ship Dates Mfr. #: 0437008.WR Stock: 450 Can Ship Immediately On Order: 3,000 Expected 11/30/2026 6,000 Expected 12/28/2026 Factory Lead-Time: 27 Weeks	Cut Tape $1.81 $1.50 $1.39 $1.15 View Reel $0.718 $1.06 $0.952 $0.83 $0.791 $0.718 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	8 A	32 VAC	35 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	8.7 mOhms
Surface Mount Fuses 32V FA 1206 5A 0437005.WR Littelfuse 1: $1.60 A tariff of 10% may be applied if shipping to the United States. 12,000Expected 11/23/2026	Mfr. Part # 0437005.WR Mouser Part # 576-0437005.WR	Littelfuse	Surface Mount Fuses 32V FA 1206 5A Learn More about Littelfuse 437 smt fuses	Datasheet	12,000Expected 11/23/2026	Cut Tape $1.60 $1.42 $1.31 $1.09 View Reel $0.718 $0.935 $0.895 $0.775 $0.718 $0.718 MouseReel Available A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,000	437	Surface Mount Ceramic Fuses	Fast Blow	5 A	32 VAC	35 VDC	50 A, 50 A	1206 (3216 metric)	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel	16 mOhms
Surface Mount Fuses FUSE 63V AUTOC FA 1206 .750A 0437.750KRA Littelfuse 10,000: $0.698 A tariff of 10% may be applied if shipping to the United States. Non-Stocked Lead-Time 21 Weeks	Mfr. Part # 0437.750KRA Mouser Part # 576-0437.750KRA	Littelfuse	Surface Mount Fuses FUSE 63V AUTOC FA 1206 .750A	Datasheet	Non-Stocked Lead-Time 21 Weeks	Reel $0.698 A tariff of 10% may be applied if shipping to the United States.	Min.: 10,000 Mult.: 10,000 : 10,000	437											Reel
Surface Mount Fuses FUSE 63V AUTOC FA 1206 2A 0437002.KRA Littelfuse 10,000: $0.798 A tariff of 35% may be applied if shipping to the United States. Non-Stocked Lead-Time 21 Weeks	Mfr. Part # 0437002.KRA Mouser Part # 576-0437002.KRA	Littelfuse	Surface Mount Fuses FUSE 63V AUTOC FA 1206 2A	Datasheet	Non-Stocked Lead-Time 21 Weeks	Reel $0.798 A tariff of 35% may be applied if shipping to the United States.	Min.: 10,000 Mult.: 10,000 : 10,000	437											Reel
Surface Mount Fuses 63V 1.75A FA 1206 04371.75WRP Littelfuse 3,000: $0.773 A tariff of 8% may be applied if shipping to the United States. Non-Stocked	Mfr. Part # 04371.75WRP Mouser Part # 576-04371.75WRP	Littelfuse	Surface Mount Fuses 63V 1.75A FA 1206 Learn More about Littelfuse 437 smt fuses	Datasheet	Non-Stocked	Reel $0.773 A tariff of 8% may be applied if shipping to the United States.	Min.: 3,000 Mult.: 3,000 : 3,000	437	Surface Mount Fuses										Reel

437 Series SMT Fuses

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