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242 Barrier Network Fuses

Littelfuse 242 Barrier Network Fuses are designed to enable greater safety for electronic equipment within potentially explosive environments. Littelfuse 242 Barrier Network Fuses are available in both axial lead and surface mount versions. These fuses operate at a temperature range of -40°C to +125°C and withstand 5 cycles of -55°C to +125°C thermal shock. The barrier network fuses come in 3.02mm x 8.4mm. Typical applications include intrinsic safety electrical equipment, electrical connections and components, and test equipment.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) 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	Packaging	Resistance
	Surface Mount Fuses Barrier SMT Fuse 0242.040UR Littelfuse 1: $10.11 2,984In Stock 6,000Expected 2026/10/08	Mfr. Part No. 0242.040UR Mouser Part No 576-0242.040UR	Littelfuse	Surface Mount Fuses Barrier SMT Fuse Learn More about Littelfuse 242 barrier fuses	Datasheet	2,984In Stock 6,000Expected 2026/10/08	Cut Tape $10.11 $9.00 $8.50 $6.77 View Reel $5.06 $5.99 $5.51 $5.06 MouseReel Available	Min.: 1 Mult.: 1 : 500			242	Surface Mount Fuses		40 mA	250 VAC	250 VDC	4 kA, 4 kA	3.02 mm x 8.4 mm	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel	16.48 Ohms
	Surface Mount Fuses 250V .05A 0242.050UR Littelfuse 1: $7.26 3,629In Stock 11,500On Order	Mfr. Part No. 0242.050UR Mouser Part No 576-0242.050UR	Littelfuse	Surface Mount Fuses 250V .05A Learn More about Littelfuse 242 barrier fuses	Datasheet	3,629In Stock 11,500On Order On Order Ship Dates Mfr. No: 0242.050UR Stock: 3,629 Can Dispatch Immediately On Order: 4,000 Expected 2026/11/09 7,500 Expected 2026/11/23 Factory Lead Time: 19 Weeks	Cut Tape $7.26 $6.40 $6.06 $4.90 View Reel $3.98 $4.37 $4.02 $3.98 MouseReel Available	Min.: 1 Mult.: 1 : 500			242	Surface Mount Fuses	Fast Blow	50 mA	250 VAC	250 VDC	4 kA, 4 kA	3.02 mm x 8.4 mm	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel	16.48 Ohms
	Surface Mount Fuses 250V .08A 0242.080UR Littelfuse 1: $7.90 831In Stock 1,000Expected 2026/12/21	Mfr. Part No. 0242.080UR Mouser Part No 576-0242.080UR	Littelfuse	Surface Mount Fuses 250V .08A Learn More about Littelfuse 242 barrier fuses	Datasheet	831In Stock 1,000Expected 2026/12/21	Cut Tape $7.90 $7.12 $6.47 $5.45 View Reel $4.04 $4.70 $4.30 $4.04 MouseReel Available	Min.: 1 Mult.: 1 : 500			242	Surface Mount Fuses	Fast Blow	80 mA	250 VAC	250 VDC	4 kA, 4 kA	3.02 mm x 8.4 mm	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel	8.19 Ohms
	Surface Mount Fuses 250V .1A 0242.100UR Littelfuse 1: $8.02 793In Stock 3,000Expected 2026/11/16	Mfr. Part No. 0242.100UR Mouser Part No 576-0242.100UR	Littelfuse	Surface Mount Fuses 250V .1A Learn More about Littelfuse 242 barrier fuses	Datasheet	793In Stock 3,000Expected 2026/11/16	Cut Tape $8.02 $7.12 $6.57 $5.35 View Reel $3.98 $4.83 $4.43 $3.98 MouseReel Available	Min.: 1 Mult.: 1 : 500			242	Surface Mount Fuses	Fast Blow	100 mA	250 VAC	250 VDC	4 kA, 4 kA	3.02 mm x 8.4 mm	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel	3.6 Ohms
	Surface Mount Fuses 250V .125A BARRIER SMT 0242.125UR Littelfuse 1: $7.89 668In Stock	Mfr. Part No. 0242.125UR Mouser Part No 576-0242.125UR	Littelfuse	Surface Mount Fuses 250V .125A BARRIER SMT Learn More about Littelfuse 242 barrier fuses	Datasheet	668In Stock	Cut Tape $7.89 $7.12 $6.44 $5.44 View Reel $4.04 $4.68 $4.28 $4.04 MouseReel Available	Min.: 1 Mult.: 1 : 500			242	Surface Mount Fuses	Fast Blow	125 mA	250 VAC	250 VDC	4 kA, 4 kA	3.02 mm x 8.4 mm	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel	3.78 Ohms
	Surface Mount Fuses 250V .16A 0242.160UR Littelfuse 1: $7.93 1,348In Stock	Mfr. Part No. 0242.160UR Mouser Part No 576-0242.160UR	Littelfuse	Surface Mount Fuses 250V .16A Learn More about Littelfuse 242 barrier fuses	Datasheet	1,348In Stock	Cut Tape $7.93 $6.97 $6.57 $5.25 View Reel $4.04 $4.65 $4.26 $4.04 MouseReel Available	Min.: 1 Mult.: 1 : 500			242	Surface Mount Fuses	Fast Blow	160 mA	250 VAC	250 VDC	4 kA, 4 kA	3.02 mm x 8.4 mm	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel	3 Ohms
	Surface Mount Fuses 250V .2A 0242.200UR Littelfuse 1: $7.65 418In Stock 1,500Expected 2026/12/15	Mfr. Part No. 0242.200UR Mouser Part No 576-0242.200UR	Littelfuse	Surface Mount Fuses 250V .2A Learn More about Littelfuse 242 barrier fuses	Datasheet	418In Stock 1,500Expected 2026/12/15	Cut Tape $7.65 $6.97 $6.57 $5.22 View Reel $4.04 $4.48 $4.18 $4.04 MouseReel Available	Min.: 1 Mult.: 1 : 500			242	Surface Mount Fuses	Fast Blow	200 mA	250 VAC	250 VDC	4 kA, 4 kA	3.02 mm x 8.4 mm	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel	2.68 Ohms
	Surface Mount Fuses 250V .25A 0242.250UR Littelfuse 1: $8.16 1,990Expected 2026/10/26	Mfr. Part No. 0242.250UR Mouser Part No 576-0242.250UR	Littelfuse	Surface Mount Fuses 250V .25A Learn More about Littelfuse 242 barrier fuses	Datasheet	1,990Expected 2026/10/26	Cut Tape $8.16 $7.12 $6.57 $5.45 View Reel $3.62 $4.91 $4.51 $3.62 MouseReel Available	Min.: 1 Mult.: 1 : 500			242	Surface Mount Fuses	Fast Blow	250 mA	250 VAC	250 VDC	4 kA, 4 kA	3.02 mm x 8.4 mm	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel	1.6 Ohms
	Surface Mount Fuses Barrier SMT Fuse 250V-W/ Sand .050A 0242.050URS Littelfuse 500: $4.22 Non-Stocked Lead-Time 19 Weeks	Mfr. Part No. 0242.050URS Mouser Part No 576-0242.050URS	Littelfuse	Surface Mount Fuses Barrier SMT Fuse 250V-W/ Sand .050A Learn More about Littelfuse 242 barrier fuses	Datasheet	Non-Stocked Lead-Time 19 Weeks	Reel $4.22	Min.: 500 Mult.: 500 : 500			242	Surface Mount Fuses	Fast Blow	50 mA	250 VAC	250 VDC	4 kA, 4 kA	3.02 mm x 8.4 mm	- 40 C	+ 125 C	Reel	11.34 Ohms