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Circuit Protection Devices

Bourns manufactures and supplies a wide range of circuit protection technologies, including fuses, PTC thermistors, varistors, GDTs, resettable thermal cut-offs, surge protection devices, hybrid protectors, discrete semiconductor solutions, and more. Reliable surge protection is a critical design consideration to help ensure operational reliability of consumer electronics, industrial/communication equipment, automotive, battery charging, energy storage infrastructure, and renewable energy harvesting ecosystems.

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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.
Varistors IsoMOV 3KA 230Vrms Bulk In-Line IsoM3-230-B-L2 Bourns 1: $1.58 3,139In Stock	Mfr. Part No. IsoM3-230-B-L2 Mouser Part No 652-ISOM3-230-B-L2	Bourns	Varistors IsoMOV 3KA 230Vrms Bulk In-Line Learn More about Bourns isomov	Datasheet	3,139In Stock	$1.58 $1.10 $0.984 $0.862 View $0.85 $0.808 $0.682 $0.605 $0.604	Min.: 1 Mult.: 1
Varistors IsoMOV 5KA 380Vrms Bulk In-Line IsoM5-380-B-L2 Bourns 1: $2.35 4,027In Stock	Mfr. Part No. IsoM5-380-B-L2 Mouser Part No 652-ISOM5-380-B-L2	Bourns	Varistors IsoMOV 5KA 380Vrms Bulk In-Line Learn More about Bourns isomov	Datasheet	4,027In Stock	$2.35 $1.58 $1.29 $1.26 View $0.986 $0.904 $0.795 $0.783	Min.: 1 Mult.: 1
Varistors IsoMOV 5KA 510Vrms Bulk In-Line IsoM5-510-B-L2 Bourns 1: $2.33 2,940In Stock	Mfr. Part No. IsoM5-510-B-L2 Mouser Part No 652-ISOM5-510-B-L2	Bourns	Varistors IsoMOV 5KA 510Vrms Bulk In-Line Learn More about Bourns isomov	Datasheet	2,940In Stock	$2.33 $1.56 $1.26 $1.19 View $0.986 $0.904 $0.836 $0.802	Min.: 1 Mult.: 1
Resettable Fuses - PPTC 2920 Resettable SMD PPTC 1.85/15V MF-LSMF185X-2 Bourns 1: $0.69 8,888In Stock	Mfr. Part No. MF-LSMF185X-2 Mouser Part No 652-MF-LSMF185X-2	Bourns	Resettable Fuses - PPTC 2920 Resettable SMD PPTC 1.85/15V Learn More about Bourns mflsmf	Datasheet	8,888In Stock	Cut Tape $0.69 $0.529 $0.497 $0.374 View Reel $0.277 $0.348 $0.326 $0.285 $0.277 $0.277 MouseReel Available	Min.: 1 Mult.: 1 : 6,000
Resettable Fuses - PPTC 30V 2.5A-HD 40A MAX MF-R250-0-10 Bourns 1: $0.44 12,750In Stock	Mfr. Part No. MF-R250-0-10 Mouser Part No 652-MF-R250-0-10	Bourns	Resettable Fuses - PPTC 30V 2.5A-HD 40A MAX Learn More about Bourns mf r	Datasheet	12,750In Stock	$0.44 $0.411 $0.357 $0.338 View $0.314 $0.298	Min.: 1 Mult.: 1
Resettable Fuses - PPTC 240V .16A-HD 2A MAX MF-RM016/240-2 Bourns 1: $0.43 12,181In Stock	Mfr. Part No. MF-RM016/240-2 Mouser Part No 652-MF-RM016/240-2	Bourns	Resettable Fuses - PPTC 240V .16A-HD 2A MAX Learn More about Bourns mf rm	Datasheet	12,181In Stock	Cut Tape $0.43 $0.392 $0.35 $0.338 View Reel $0.267 $0.334 $0.324 $0.279 $0.267	Min.: 1 Mult.: 1 : 4,000
Resettable Fuses - PPTC 30V 200MA-HD 20A MAX MF-USHT020KX-2 Bourns 1: $0.79 11,649In Stock	Mfr. Part No. MF-USHT020KX-2 Mouser Part No 652-MF-USHT020KX-2	Bourns	Resettable Fuses - PPTC 30V 200MA-HD 20A MAX Learn More about Bourns mf usht	Datasheet	11,649In Stock	Cut Tape $0.79 $0.604 $0.566 $0.428 Reel $0.411 View $0.415 $0.411 $0.381 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Surface Mount Fuses 0.8A Slow Blow 0402 SinglFuse SF-0402S080-2 Bourns 1: $0.80 9,101In Stock	Mfr. Part No. SF-0402S080-2 Mouser Part No 652-SF-0402S080-2	Bourns	Surface Mount Fuses 0.8A Slow Blow 0402 SinglFuse Learn More about Bourns slow blow smd fuses	Datasheet	9,101In Stock	Cut Tape $0.80 $0.704 $0.585 $0.53 View Reel $0.39 $0.504 $0.465 $0.429 $0.395 $0.39 $0.39 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Thermal Cut-offs TRIP TEMP 77C 5C TOL HC77AY-1 Bourns 1: $1.50 3,142In Stock	Mfr. Part No. HC77AY-1 Mouser Part No 652-HC77AY-1	Bourns	Thermal Cut-offs TRIP TEMP 77C 5C TOL Learn More about Bourns hc series breakers	Datasheet	3,142In Stock	$1.50 $1.40 $1.15 $1.06 View $0.952 $0.871 $0.78 $0.779	Min.: 1 Mult.: 1
Varistors IsoMOV 5KA 420Vrms Bulk In-Line IsoM5-420-B-L2 Bourns 1: $2.31 5,065In Stock	Mfr. Part No. IsoM5-420-B-L2 Mouser Part No 652-ISOM5-420-B-L2	Bourns	Varistors IsoMOV 5KA 420Vrms Bulk In-Line Learn More about Bourns isomov	Datasheet	5,065In Stock	$2.31 $1.54 $1.26 $1.23 View $0.987 $0.904 $0.794 $0.733	Min.: 1 Mult.: 1
Thermal Cut-offs TRIP TEMP 72C 5C TOL LC72AY-1 Bourns 1: $1.04 2,301In Stock	Mfr. Part No. LC72AY-1 Mouser Part No 652-LC72AY-1	Bourns	Thermal Cut-offs TRIP TEMP 72C 5C TOL Learn More about Bourns lc series mini breakers	Datasheet	2,301In Stock	$1.04 $0.983 $0.922 $0.851 View $0.754 $0.729 $0.683 $0.59	Min.: 1 Mult.: 1
Resettable Fuses - PPTC 2920 Resettable SMD PPTC 2.0A/15V MF-LSMF200X-2 Bourns 1: $0.69 13,410In Stock	Mfr. Part No. MF-LSMF200X-2 Mouser Part No 652-MF-LSMF200X-2	Bourns	Resettable Fuses - PPTC 2920 Resettable SMD PPTC 2.0A/15V Learn More about Bourns mflsmf	Datasheet	13,410In Stock	Cut Tape $0.69 $0.529 $0.497 $0.374 View Reel $0.24 $0.348 $0.326 $0.285 $0.273 $0.24 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Resettable Fuses - PPTC 6V 3.0A-HD 40A MAX MF-LSMF300X-2 Bourns 1: $0.93 7,590In Stock	Mfr. Part No. MF-LSMF300X-2 Mouser Part No 652-MF-LSMF300X-2	Bourns	Resettable Fuses - PPTC 6V 3.0A-HD 40A MAX Learn More about Bourns mflsmf	Datasheet	7,590In Stock	Cut Tape $0.93 $0.709 $0.665 $0.502 View Reel $0.359 $0.468 $0.404 $0.368 $0.361 $0.359 MouseReel Available	Min.: 1 Mult.: 1 : 6,000
Resettable Fuses - PPTC PTC RESETTABLE 2.5A 30V RADIAL LEADED MF-R250-0-14 Bourns 1: $0.65 7,834In Stock	Mfr. Part No. MF-R250-0-14 Mouser Part No 652-MF-R250-0-14	Bourns	Resettable Fuses - PPTC PTC RESETTABLE 2.5A 30V RADIAL LEADED Learn More about Bourns mf r	Datasheet	7,834In Stock	$0.65 $0.493 $0.462 $0.349 View $0.326 $0.304 $0.266 $0.254 $0.22	Min.: 1 Mult.: 1
Resettable Fuses - PPTC PTC 2.0A 16V RADIAL LEADED HI-TEMP MF-RHT200-2 Bourns 1: $0.75 10,929In Stock	Mfr. Part No. MF-RHT200-2 Mouser Part No 652-MF-RHT200-2	Bourns	Resettable Fuses - PPTC PTC 2.0A 16V RADIAL LEADED HI-TEMP Learn More about Bourns mf rht fuses	Datasheet	10,929In Stock	Cut Tape $0.75 $0.576 $0.54 $0.407 Reel $0.285 View $0.379 $0.343 $0.311 $0.265	Min.: 1 Mult.: 1 : 3,000
Resettable Fuses - PPTC 240V .25A-HD 3.5A MAX MF-RM025/240-2 Bourns 1: $0.49 13,702In Stock	Mfr. Part No. MF-RM025/240-2 Mouser Part No 652-MF-RM025/240-2	Bourns	Resettable Fuses - PPTC 240V .25A-HD 3.5A MAX Learn More about Bourns mf rm	Datasheet	13,702In Stock	Cut Tape $0.49 $0.454 $0.397 $0.378 View Reel $0.30 $0.365 $0.35 $0.30 $0.30	Min.: 1 Mult.: 1 : 4,000
Resettable Fuses - PPTC PTC 0.12A 250V RADIAL LEADED TELECOM MF-RX012/250-2 Bourns 1: $0.58 14,614In Stock	Mfr. Part No. MF-RX012/250-2 Mouser Part No 652-MF-RX012/250-2	Bourns	Resettable Fuses - PPTC PTC 0.12A 250V RADIAL LEADED TELECOM Learn More about Bourns multifuse	Datasheet	14,614In Stock	Cut Tape $0.58 $0.53 $0.44 $0.406 View Reel $0.228 $0.365 $0.337 $0.228 $0.228	Min.: 1 Mult.: 1 : 6,000
Resettable Fuses - PPTC 72V 1.6A-HD 40A MAX MF-RX160/72-0 Bourns 1: $0.32 11,276In Stock	Mfr. Part No. MF-RX160/72-0 Mouser Part No 652-MF-RX160/72-0	Bourns	Resettable Fuses - PPTC 72V 1.6A-HD 40A MAX Learn More about Bourns multifuse	Datasheet	11,276In Stock	$0.32 $0.298 $0.274 $0.269 View $0.248 $0.23 $0.192	Min.: 1 Mult.: 1
Resettable Fuses - PPTC 60V 1.85A-HD 40A MAX MF-RX185/72-0 Bourns 1: $0.30 11,444In Stock	Mfr. Part No. MF-RX185/72-0 Mouser Part No 652-MF-RX185/72-0	Bourns	Resettable Fuses - PPTC 60V 1.85A-HD 40A MAX Learn More about Bourns multifuse	Datasheet	11,444In Stock	$0.30 $0.278 $0.274	Min.: 1 Mult.: 1
Resettable Fuses - PPTC PTC RESETTABLE 3.0A 72V RADIAL LEADED MF-RX300/72-2 Bourns 1: $0.69 7,247In Stock	Mfr. Part No. MF-RX300/72-2 Mouser Part No 652-MF-RX300/72-2	Bourns	Resettable Fuses - PPTC PTC RESETTABLE 3.0A 72V RADIAL LEADED Learn More about Bourns multifuse	Datasheet	7,247In Stock	Cut Tape $0.69 $0.64 $0.542 $0.50 Reel $0.324 View $0.45 $0.433 $0.372 $0.286	Min.: 1 Mult.: 1 : 3,000
Varistors PV 300V 10% PV300K3225R2 Bourns 1: $0.73 8,634In Stock	Mfr. Part No. PV300K3225R2 Mouser Part No 652-PV300K3225R2	Bourns	Varistors PV 300V 10% Learn More about Bourns pv low medium varistors	Datasheet	8,634In Stock	Cut Tape $0.73 $0.421 $0.379 $0.365 Reel $0.333 View $0.361 $0.304 $0.298	Min.: 1 Mult.: 1 : 1,000
Thermal Cut-offs 77C Low Profile SMD HC TCO SC77AAB Bourns 1: $0.95 9,540In Stock	Mfr. Part No. SC77AAB Mouser Part No 652-SC77AAB	Bourns	Thermal Cut-offs 77C Low Profile SMD HC TCO Learn More about Bourns sc mini breakers	Datasheet	9,540In Stock	Cut Tape $0.95 $0.898 $0.842 $0.804 View Reel $0.519 $0.707 $0.693 $0.63 $0.576 $0.519 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Surface Mount Fuses 0.5A Fast Acting 0402 SinglFuse SF-0402F050-2 Bourns 1: $0.57 14,825In Stock	Mfr. Part No. SF-0402F050-2 Mouser Part No 652-SF-0402F050-2	Bourns	Surface Mount Fuses 0.5A Fast Acting 0402 SinglFuse Learn More about Bourns fast acting thin film smd fuses	Datasheet	14,825In Stock	Cut Tape $0.57 $0.518 $0.43 $0.397 View Reel $0.326 $0.357 $0.329 $0.326 $0.326 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Surface Mount Fuses 1.5A Fast Acting 0603 SinglFuse SF-0603F150-2 Bourns 1: $0.53 20,018In Stock	Mfr. Part No. SF-0603F150-2 Mouser Part No 652-SF-0603F150-2	Bourns	Surface Mount Fuses 1.5A Fast Acting 0603 SinglFuse Learn More about Bourns fast acting thin film smd fuses	Datasheet	20,018In Stock	Cut Tape $0.53 $0.49 $0.406 $0.376 View Reel $0.236 $0.337 $0.311 $0.287 $0.236 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Surface Mount Fuses 0.8A Slow Blow 0603 SinglFuse SF-0603S080-2 Bourns 1: $0.68 16,345In Stock	Mfr. Part No. SF-0603S080-2 Mouser Part No 652-SF-0603S080-2	Bourns	Surface Mount Fuses 0.8A Slow Blow 0603 SinglFuse Learn More about Bourns slow blow smd fuses	Datasheet	16,345In Stock	Cut Tape $0.68 $0.541 $0.456 $0.40 View Reel $0.252 $0.361 $0.333 $0.306 $0.283 $0.252 MouseReel Available	Min.: 1 Mult.: 1 : 5,000

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