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.

Results: 21
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Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model 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
Littelfuse Surface Mount Fuses 32V FA 1206 3.5A
Datasheet
3,931In Stock
MouseReel Available
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
Littelfuse Surface Mount Fuses 63V 1.25A FA 1206
Datasheet
3,063In Stock
MouseReel Available
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
Littelfuse Surface Mount Fuses 63V 1.75A FA 1206
Datasheet
1,868In Stock
MouseReel Available
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
Littelfuse Surface Mount Fuses 125V .250A FA 1206
Datasheet
8,745In Stock
12,000Expected 24/08/2026
MouseReel Available
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
Littelfuse Surface Mount Fuses 125V .375A FA 1206
Datasheet
5,233In Stock
6,000Expected 20/07/2026
MouseReel Available
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
Littelfuse Surface Mount Fuses .375A 125V AECQ
Datasheet
15,855In Stock
MouseReel Available
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
Littelfuse Surface Mount Fuses 63V .500A FA 1206
Datasheet
2,756In Stock
3,000Expected 03/08/2026
MouseReel Available
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
Littelfuse Surface Mount Fuses 63V .750A FA 1206
Datasheet
3,678In Stock
MouseReel Available
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
Littelfuse Surface Mount Fuses 63V FA 1206 1A
Datasheet
5,870In Stock
12,000Expected 20/07/2026
MouseReel Available
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
Littelfuse Surface Mount Fuses 63V FA 1206 2A
Datasheet
7,130In Stock
MouseReel Available
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
Littelfuse Surface Mount Fuses 32V FA 1206 3A
Datasheet
7,197In Stock
MouseReel Available
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
Littelfuse Surface Mount Fuses 32V FA 1206 4A
Datasheet
3,491In Stock
MouseReel Available
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
Littelfuse Surface Mount Fuses 32V FA 1206 8A
Datasheet
3,788In Stock
MouseReel Available
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
Littelfuse Surface Mount Fuses 63V FA 1206 1.5A
Datasheet
2,883In Stock
MouseReel Available
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
Littelfuse Surface Mount Fuses 32V FA 1206 2.5A
Datasheet
5,227In Stock
MouseReel Available
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
Littelfuse Surface Mount Fuses FUSE 125V FA 1206 .250A AECQ
Datasheet
625In Stock
3,000Expected 28/10/2026
MouseReel Available
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
Littelfuse Surface Mount Fuses 32V FA 1206 5A
Datasheet
26In Stock
3,000Expected 28/10/2026
MouseReel Available
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
Littelfuse Surface Mount Fuses 32V FA 1206 7A
Datasheet
446In Stock
3,000Expected 13/07/2026
MouseReel Available
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
Littelfuse Surface Mount Fuses FUSE 63V AUTOC FA 1206 .750A
Datasheet
Non-Stocked Lead-Time 21 Weeks
Min.: 10,000
Mult.: 10,000
: 10,000
437 Reel
Littelfuse Surface Mount Fuses FUSE 63V AUTOC FA 1206 2A
Datasheet
Non-Stocked Lead-Time 21 Weeks
Min.: 10,000
Mult.: 10,000
: 10,000
437 Reel
Littelfuse Surface Mount Fuses 63V 1.75A FA 1206
Datasheet
Non-Stocked
Min.: 3,000
Mult.: 3,000
: 3,000

437 Surface Mount Fuses Reel