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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.

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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.
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 90V 2POLE SMT GDT GTCS23-900M-R01-2 Littelfuse 1: $0.98 47,016In Stock	Mfr. Part No. GTCS23-900M-R01-2 Mouser Part No 650-GTCS23-900MR01-2	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 90V 2POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	47,016In Stock	Cut Tape $0.98 $0.90 $0.747 $0.69 Reel $0.484 View $0.619 $0.571 $0.568 $0.483 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 90V 3POLE RADIAL LEADS GDT GTCR36-900M-R10 Littelfuse 1: $3.26 1,204In Stock	Mfr. Part No. GTCR36-900M-R10 Mouser Part No 650-GTCR36-900M-R10	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 90V 3POLE RADIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	1,204In Stock	$3.26 $2.70 $2.49 $2.11 $2.07	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 4000V 2POLE AXIAL LEAD HV GDT GTCA28-402M-R03 Littelfuse 1: $5.12 995In Stock	Mfr. Part No. GTCA28-402M-R03 Mouser Part No 650-GTCA28-402M-R03	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 4000V 2POLE AXIAL LEAD HV GDT Learn More about Littelfuse GTCA28 gdts	Datasheet	995In Stock	$5.12 $4.63 $4.27 $3.54 View $3.04 $2.90 $2.52 $2.40	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 600V NOMINAL CG5600L Littelfuse 1: $2.76 1,221In Stock	Mfr. Part No. CG5600L Mouser Part No 576-CG5600L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 600V NOMINAL	Datasheet	1,221In Stock	Cut Tape $2.76 $2.48 $2.31 $1.92 Reel $1.23 View $1.67 $1.57 $1.33 $1.21	Min.: 1 Mult.: 1 : 1,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90V SMD Ultra Low 0.3pF CG690SM Littelfuse 1: $2.65 381In Stock	Mfr. Part No. CG690SM Mouser Part No 576-CG690SM	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90V SMD Ultra Low 0.3pF Learn More about Littelfuse CG6 CG7 SMD gas discharge tubes	Datasheet	381In Stock	Cut Tape $2.65 $2.20 $2.04 $1.69 View Reel $1.20 $1.56 $1.43 $1.23 $1.20 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 3000V 2POLE AXIAL LEAD HV GDT GTCA28-302M-R03 Littelfuse 1: $4.31 978In Stock	Mfr. Part No. GTCA28-302M-R03 Mouser Part No 650-GTCA28-302M-R03	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 3000V 2POLE AXIAL LEAD HV GDT Learn More about Littelfuse GTCA28 gdts	Datasheet	978In Stock	$4.31 $3.11 $2.97 $2.48 View $2.24 $2.12 $2.07 $2.01	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GTCR38-601M-R20 Littelfuse 1: $5.90 951In Stock	Mfr. Part No. GTCR38-601M-R20 Mouser Part No 650-GTCR38-601M-R20	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Learn More about Littelfuse gas discharge tubes	Datasheet	951In Stock	$5.90 $4.90 $4.52 $3.76 View $3.47 $3.11 $2.86 $2.84	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V2POLE SMT GDT GTCS25-900M-R02 Littelfuse 1: $3.14 3,661In Stock	Mfr. Part No. GTCS25-900M-R02 Mouser Part No 650-GTCS25-900M-R02	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V2POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	3,661In Stock	$3.14 $2.61 $2.41 $2.00 View $1.66 $1.54 $1.42	Min.: 1 Mult.: 1
Resettable Fuses - PPTC .15A 250Vdc 600Vrms TRF600-150-B-0.5-2 Littelfuse 1: $1.24 7,631In Stock	Mfr. Part No. TRF600-150-B-0.5-2 Mouser Part No 650-TRF600-150B0.5-2	Littelfuse	Resettable Fuses - PPTC .15A 250Vdc 600Vrms Learn More about Littelfuse telecom ptcs	Datasheet	7,631In Stock	Cut Tape $1.24 $0.965 $0.863 $0.80 Reel $0.604 View $0.727 $0.649 $0.563 $0.545	Min.: 1 Mult.: 1 : 1,500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 200V 2POLE CHIP TYPE SMT GTCC23-201M-R01-2 Littelfuse 1: $1.13 2,341In Stock	Mfr. Part No. GTCC23-201M-R01-2 Mouser Part No 650-GTCC23-201MR01-2	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 200V 2POLE CHIP TYPE SMT Learn More about Littelfuse gas discharge tubes	Datasheet	2,341In Stock	Cut Tape $1.13 $1.04 $0.859 $0.793 View Reel $0.563 $0.662 $0.563 $0.563 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term SG420 Littelfuse 1: $1.43 2,525In Stock	Mfr. Part No. SG420 Mouser Part No 576-SG420	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term Learn More about Littelfuse sg series sgdt	Datasheet	2,525In Stock	Cut Tape $1.43 $1.07 $0.899 $0.819 View Reel $0.651 $0.775 $0.708 $0.668 $0.651 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE SMT GDT GTCS28-750M-R05-2 Littelfuse 1: $3.01 1,773In Stock	Mfr. Part No. GTCS28-750M-R05-2 Mouser Part No 650-GTCS28-750MR05-2	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	1,773In Stock	Cut Tape $3.01 $2.83 $2.67 $2.16 Reel $1.43 View $1.83 $1.79 $1.34 $1.22 MouseReel Available	Min.: 1 Mult.: 1 : 500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM CG590L Littelfuse 1: $3.49 3,354In Stock	Mfr. Part No. CG590L Mouser Part No 576-CG590L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM	Datasheet	3,354In Stock	Cut Tape $3.49 $2.90 $2.67 $2.22 View Reel $1.42 $2.05 $1.84 $1.70 $1.42	Min.: 1 Mult.: 1 : 1,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 2100V 2POLE AXIAL LEAD HV GDT GTCA28-212M-R03 Littelfuse 1: $4.31 1,456In Stock	Mfr. Part No. GTCA28-212M-R03 Mouser Part No 650-GTCA28-212M-R03	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 2100V 2POLE AXIAL LEAD HV GDT Learn More about Littelfuse GTCA28 gdts	Datasheet	1,456In Stock	$4.31 $3.58 $3.30 $2.74 View $2.54 $2.27 $2.09 $2.06 $2.01	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 90V 3POLE AXIAL LEADS GDT GTCA38-900M-R10 Littelfuse 1: $3.07 1,011In Stock	Mfr. Part No. GTCA38-900M-R10 Mouser Part No 650-GTCA38-900M-R10	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 90V 3POLE AXIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	1,011In Stock	$3.07 $2.55 $2.36 $1.97 View $1.81 $1.62 $1.50 $1.38	Min.: 1 Mult.: 1
Resettable Fuses - PPTC Polyswitch 0.26A TS250-130F-2 Littelfuse 1: $1.17 4,465In Stock	Mfr. Part No. TS250-130F-2 Mouser Part No 650-TS250-130F-2	Littelfuse	Resettable Fuses - PPTC Polyswitch 0.26A Learn More about Littelfuse telecom ptcs	Datasheet	4,465In Stock	Cut Tape $1.17 $1.05 $0.928 $0.859 Reel $0.591 View $0.794 $0.748 $0.579 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 230V 3POLE RADIAL LEADS GDT GTCR36-231M-R10 Littelfuse 1: $3.65 525In Stock	Mfr. Part No. GTCR36-231M-R10 Mouser Part No 650-GTCR36-231M-R10	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 230V 3POLE RADIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	525In Stock	$3.65 $3.33 $3.21 $2.52 View $2.14 $2.01 $1.77 $1.74 $1.67	Min.: 1 Mult.: 1
Resettable Fuses - PPTC 250V 3A 10Ohms TRF600-150S Littelfuse 1: $1.23 255In Stock	Mfr. Part No. TRF600-150S Mouser Part No 650-TRF600-150S	Littelfuse	Resettable Fuses - PPTC 250V 3A 10Ohms Learn More about Littelfuse telecom ptcs	Datasheet	255In Stock	$1.23 $1.13 $0.885 $0.865 View $0.777 $0.597 $0.557	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 90V 2POLE AXIAL LEADS GDT GTCA26-900M-R05 Littelfuse 1: $3.26 114In Stock	Mfr. Part No. GTCA26-900M-R05 Mouser Part No 650-GTCA26-900M-R05	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 90V 2POLE AXIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	114In Stock	$3.26 $2.97 $2.87 $2.26 View $1.91 $1.79 $1.58 $1.55 $1.51	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 230V 2POLE CHIP TYPE SMT GTCC23-231M-R01-2 Littelfuse 1: $1.52 1,777In Stock	Mfr. Part No. GTCC23-231M-R01-2 Mouser Part No 650-GTCC23-231MR01-2	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 230V 2POLE CHIP TYPE SMT Learn More about Littelfuse gas discharge tubes	Datasheet	1,777In Stock	Cut Tape $1.52 $1.26 $1.04 $0.885 Reel $0.666 View $0.844 $0.734 $0.676 $0.63 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 300V 2POLE SMT GDT GTCS23-301M-R01-2 Littelfuse 1: $1.34 872In Stock	Mfr. Part No. GTCS23-301M-R01-2 Mouser Part No 650-GTCS23-301M-R012	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 300V 2POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	872In Stock	Cut Tape $1.34 $1.08 $0.89 $0.78 View Reel $0.571 $0.723 $0.647 $0.597 $0.571 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 230V 2POLE SMT GDT GTCS28-231M-R10-2 Littelfuse 1: $3.01 279In Stock	Mfr. Part No. GTCS28-231M-R10-2 Mouser Part No 650-GTCS28-231MR10-2	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 230V 2POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	279In Stock	Cut Tape $3.01 $2.83 $2.67 $2.16 Reel $1.60 View $1.83 $1.79 $1.42 MouseReel Available	Min.: 1 Mult.: 1 : 500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 230V 3POLE SMT GDT GTCS35-231M-R05 Littelfuse 1: $1.65 2,130In Stock	Mfr. Part No. GTCS35-231M-R05 Mouser Part No 650-GTCS35-231M-R05	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 230V 3POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	2,130In Stock	$1.65 $1.52 $1.26 $1.17 View $1.05 $0.963 $0.857	Min.: 1 Mult.: 1
Resettable Fuses - PPTC 250V .12A-HD 3A MAX TRF250-120-2 Littelfuse 1: $0.761 2,551In Stock	Mfr. Part No. TRF250-120-2 Mouser Part No 650-TRF250-120-2	Littelfuse	Resettable Fuses - PPTC 250V .12A-HD 3A MAX Learn More about Littelfuse telecom ptcs	Datasheet	2,551In Stock	Cut Tape $0.761 $0.701 $0.627 $0.584 Reel $0.38 View $0.537 $0.479 $0.356	Min.: 1 Mult.: 1 : 1,500
Thyristor Surge Protection Devices - TSPD 500A 170V P1800SCMCLRP Littelfuse 1: $1.67 1,767In Stock	Mfr. Part No. P1800SCMCLRP Mouser Part No 576-P1800SCMCLRP	Littelfuse	Thyristor Surge Protection Devices - TSPD 500A 170V Learn More about Littelfuse p 0s mclrp thyristors	Datasheet	1,767In Stock	Cut Tape $1.67 $1.04 $0.757 $0.644 $0.60 Reel $0.59 MouseReel Available	Min.: 1 Mult.: 1 : 2,500