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 63-117V 2A GDT T/R 2 Term 2,334In Stock
6,000Expected 2026/03/27
Min.: 1
Mult.: 1
Reel: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 1500V 2POLE AXIAL LEAD HV GDT 1,255In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 150V 2POLE CHIP TYPE SMT 3,715In Stock
Min.: 1
Mult.: 1
Reel: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 90V 2POLE CHIP TYPE SMT 5,105In Stock
Min.: 1
Mult.: 1
Reel: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 90V 2POLE SMT GDT 22,254In Stock
Min.: 1
Mult.: 1
Reel: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 75V 3POLE SMT GDT 3,175In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 75V 3POLE SMT GDT 9,932In Stock
Min.: 1
Mult.: 1
Reel: 1,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V 3POLE SMT GDT 2,985In Stock
Min.: 1
Mult.: 1
Reel: 1,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 75V 3POLE SMT GDT 3,000In Stock
Min.: 1
Mult.: 1
Reel: 750
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM 3,850In Stock
Min.: 1
Mult.: 1
Reel: 1,000

Littelfuse Thyristor Surge Protection Devices - TSPD 500A 25V 25-45pF 2,676In Stock
Min.: 1
Mult.: 1
Reel: 2,500

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP 5X5 90V Minitube 2 Term 3,573In Stock
Min.: 1
Mult.: 1
Reel: 900

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP 5X5 230V Minitube 2 Term 2,851In Stock
Min.: 1
Mult.: 1
Reel: 900

Littelfuse Resettable Fuses - PPTC .15A 250Vdc 3A RMS INTER 9,773In Stock
Min.: 1
Mult.: 1

Littelfuse Resettable Fuses - PPTC Polyswitch 0.26A 3,409In Stock
Min.: 1
Mult.: 1
Reel: 1,500

Littelfuse Resettable Fuses - PPTC Polyswitch 0.13A 12,405In Stock
9,600Expected 2026/04/06
Min.: 1
Mult.: 1
Reel: 1,200

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GDT 2T 600V 590In Stock
Min.: 1
Mult.: 1
Reel: 1,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V MS 457In Stock
Min.: 1
Mult.: 1
Reel: 900

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 230V SMD Ultra Low 0.3pF 669In Stock
Min.: 1
Mult.: 1
Reel: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 200V Square SG 2,150In Stock
Min.: 1
Mult.: 1
Reel: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 172-288V 2A GDT T/R 2 Term 1,255In Stock
2,000Expected 2026/04/17
Min.: 1
Mult.: 1
Reel: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 500V 2POLE AXIAL LEADS GDT 439In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 1200V 2POLE AXIAL LEAD HV GDT 441In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 140V 8mm 20KA 2POLE 61In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 2100V 2POLE AXIAL LEAD HV GDT 489In Stock
1,000Expected 2026/02/11
Min.: 1
Mult.: 1