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 (390)

Select Image Part # Mfr. Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity. Qty. RoHS
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 90V 3POLE RADIAL LEADS GDT 1,304In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 230V 2POLE CHIP TYPE SMT 4,062In Stock
Min.: 1
Mult.: 1
: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V 3POLE SMT GDT 3,240In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM 3,474In Stock
Min.: 1
Mult.: 1
: 1,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 2100V 2POLE AXIAL LEAD HV GDT 1,466In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 90V 3POLE AXIAL LEADS GDT 1,156In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 150V 2POLE CHIP TYPE SMT 5,190In Stock
Min.: 1
Mult.: 1
: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V 3POLE SMT GDT 5,965In Stock
Min.: 1
Mult.: 1
: 1,000

Littelfuse Resettable Fuses - PPTC .15A 250Vdc 600Vrms 6,805In Stock
1,500Expected 20/07/2026
Min.: 1
Mult.: 1
: 1,500

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 951In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V2POLE SMT GDT 3,661In Stock
Min.: 1
Mult.: 1

Littelfuse Thyristor Surge Protection Devices - TSPD 500A 90V 2,616In Stock
Min.: 1
Mult.: 1
: 2,500

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 200V 2POLE CHIP TYPE SMT 2,341In Stock
Min.: 1
Mult.: 1
: 2,000

Littelfuse Thyristor Surge Protection Devices - TSPD 500A 58V 4,775In Stock
Min.: 1
Mult.: 1
: 2,500

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 3000V 2POLE AXIAL LEAD HV GDT 978In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 600V 2POLE AXIAL LEADS GDT 978In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term 2,545In Stock
Min.: 1
Mult.: 1
: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE SMT GDT 1,773In Stock
Min.: 1
Mult.: 1
: 500

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 300V 2POLE SMT GDT 872In Stock
Min.: 1
Mult.: 1
: 2,000

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 90V 2POLE AXIAL LEADS GDT 150In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 4000V 2POLE AXIAL LEAD HV GDT 100In Stock
1,000Expected 29/10/2026
Min.: 1
Mult.: 1
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 2400V 2POLE AXIAL LEAD HV GDT 2,808In Stock
Min.: 1
Mult.: 1
Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 230V 2POLE SMT GDT 279In Stock
Min.: 1
Mult.: 1
: 500

Littelfuse Resettable Fuses - PPTC 250V 3A 10Ohms 255In Stock
Min.: 1
Mult.: 1

Littelfuse Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 50V 2POLE AXIAL LEADS GDT 781In Stock
Min.: 1
Mult.: 1