RS-485 ESD, Lightning, & Power Fault Protection

Littelfuse RS-485 ESD, Lightning, and Power Fault Protection feature polymeric positive temperature coefficients (PPTCs) that can protect against short circuit and power crosses. The RS-485 product line includes the resettable PPTCs, TVS diodes, GDTs, and SIDACtor series. The TVS Diode Arrays and SM712 series are specifically designed to protect RS-485 applications from ESD, EFT, and lightning-induced surges. When lightning occurs, the SIDACtor will react by causing voltage to increase across PPTC until GDT fires. 

All Results (398)

Select Image Part # Mfr. Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity. Qty. RoHS
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 2700V 2POLE AXIAL LEADS HV GDT 421In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 3600V 2POLE AXIAL LEAD HV GDT 452In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 600V 2POLE AXIAL LEADS GDT 319In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 75V 3POLE AXIAL LEADS GDT 795In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 90V 3POLE AXIAL LEADS GDT 184In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 200V 2POLE CHIP TYPE SMT 681In Stock
Min.: 1
Mult.: 1
Reel: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 300V 1KA 20% 2-POLE SMD 32In Stock
4,000Expected 2026/05/13
Min.: 1
Mult.: 1
Reel: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 400V 2POLE CHIP TYPE SMT 1,097In Stock
Min.: 1
Mult.: 1
Reel: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 500V 2POLE 4.5mm L 2,505In Stock
Min.: 1
Mult.: 1
Reel: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 75V 1KA 20% 2-POLE SMD 1,970In Stock
Min.: 1
Mult.: 1
Reel: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 90V 3POLE RADIAL LEADS GDT 308In Stock
1,000Expected 2026/04/21
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 7MM 90V 3POLE RADIAL LEADS GDT 377In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 350V 2POLE CHIP TYPE SMT 10In Stock
Min.: 1
Mult.: 1
Reel: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 350V2POLE SMT GDT 240In Stock
750Expected 2026/04/13
Min.: 1
Mult.: 1
Reel: 750

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 75V 2POLE SMT GDT 508In Stock
Min.: 1
Mult.: 1
Reel: 750

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 658In Stock
Min.: 1
Mult.: 1
Reel: 1,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V 3POLE SMT GDT 1,595In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP BIPOLAR SURGE ARRESTOR MS 371In Stock
Min.: 1
Mult.: 1
Reel: 900

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 350V NOM 599In Stock
1,000Expected 2026/06/26
Min.: 1
Mult.: 1
Reel: 1,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90V NOMINAL GP S.A. STANDARD 138In Stock
2,000Expected 2026/06/18
Min.: 1
Mult.: 1
Reel: 1,000

Littelfuse Thyristor Surge Protection Devices - TSPD 500A 6V 643In Stock
2,500Expected 2026/03/11
Min.: 1
Mult.: 1
Reel: 2,500

Littelfuse Thyristor Surge Protection Devices - TSPD 500A 275V MC=MICRO CAPACITANCE 447In Stock
Min.: 1
Mult.: 1
Reel: 2,500

Littelfuse Resettable Fuses - PPTC .12A 60VDC 250VRMS 1,338In Stock
Min.: 1
Mult.: 1

Littelfuse Resettable Fuses - PPTC 16 Ohms 3 A 60 V - 40 C+ 85 C 575In Stock
Min.: 1
Mult.: 1

Littelfuse Resettable Fuses - PPTC 16 Ohms 3 A 60 VDC - 40 C+ 85 C 507In Stock
Min.: 1
Mult.: 1