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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 6MM 90V 3POLE RADIAL LEADS GDT GTCR36-900M-R10 Littelfuse 1: $2.70 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	$2.70 $2.07 $1.63 $1.54 View $1.48 $1.44 $1.41	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 4000V 2POLE AXIAL LEAD HV GDT GTCA28-402M-R03 Littelfuse 1: $4.63 1,000In 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	1,000In Stock	$4.63 $3.54 $2.93 $2.70 $2.40	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 230V 2POLE CHIP TYPE SMT GTCC23-231M-R01-2 Littelfuse 1: $1.35 3,777In 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	3,777In Stock	Cut Tape $1.35 $1.04 $0.855 $0.778 $0.676 Reel $0.618 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: $0.91 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 $0.91 $0.757 $0.676 $0.648 $0.631 Reel $0.625 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: $1.91 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 $1.91 $1.88 $1.83 Reel $1.45 $1.31 $1.24 MouseReel Available	Min.: 1 Mult.: 1 : 500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V 3POLE SMT GDT GTCS35-900M-R05-2 Littelfuse 1: $1.58 5,775In Stock	Mfr. Part No. GTCS35-900M-R05-2 Mouser Part No 650-GTCS35-900MR05-2	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V 3POLE SMT GDT Learn More about Littelfuse gas discharge tubes	Datasheet	5,775In Stock	Cut Tape $1.58 $1.27 $1.05 $1.02 Reel $0.889 View $0.854 $0.85 $0.826 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Resettable Fuses - PPTC .15A 250Vdc 600Vrms TRF600-150-B-0.5-2 Littelfuse 1: $1.02 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 $1.02 $0.907 $0.816 $0.795 Reel $0.613 View $0.723 $0.645 $0.612 $0.603	Min.: 1 Mult.: 1 : 1,500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 600V NOMINAL CG5600L Littelfuse 1: $2.50 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 $2.50 $1.92 $1.59 $1.46 Reel $1.26 $1.16	Min.: 1 Mult.: 1 : 1,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 3000V 2POLE AXIAL LEAD HV GDT GTCA28-302M-R03 Littelfuse 1: $2.83 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	$2.83 $2.23 $1.96 $1.94 $1.93	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 600V 2POLE AXIAL LEADS GDT GTCA28-601M-R05 Littelfuse 1: $2.86 848In Stock	Mfr. Part No. GTCA28-601M-R05 Mouser Part No 650-GTCA28-601M-R05	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 600V 2POLE AXIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	848In Stock	$2.86 $2.19 $1.81 $1.67 View $1.53 $1.50	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GTCR38-601M-R20 Littelfuse 1: $4.89 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	$4.89 $3.75 $3.10 $2.86 $2.72	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5MM 90V2POLE SMT GDT GTCS25-900M-R02 Littelfuse 1: $2.61 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	$2.61 $2.00 $1.37 $1.32	Min.: 1 Mult.: 1
Thyristor Surge Protection Devices - TSPD 500A 90V P1100SCMCLRP Littelfuse 1: $1.93 2,616In Stock	Mfr. Part No. P1100SCMCLRP Mouser Part No 576-P1100SCMCLRP	Littelfuse	Thyristor Surge Protection Devices - TSPD 500A 90V Learn More about Littelfuse p 0s mclrp thyristors	Datasheet	2,616In Stock	Cut Tape $1.93 $1.24 $0.871 $0.70 $0.635 Reel $0.582 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
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 $0.858 $0.662 $0.558 Reel $0.54 View $0.557 $0.531 Quote MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM CG590L Littelfuse 1: $2.90 3,361In Stock	Mfr. Part No. CG590L Mouser Part No 576-CG590L	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM	Datasheet	3,361In Stock	Cut Tape $2.90 $2.22 $1.84 $1.70 Reel $1.40 $1.36	Min.: 1 Mult.: 1 : 1,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP 5X5 230V Minitube 2 Term SL0902A230SM Littelfuse 1: $2.07 3,521In Stock	Mfr. Part No. SL0902A230SM Mouser Part No 576-SL0902A230SM	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP 5X5 230V Minitube 2 Term Learn More about Littelfuse sl0902a cg5 gdts	Datasheet	3,521In Stock	Cut Tape $2.07 $1.60 $1.34 $1.30 Reel $1.15 View $1.12 $1.04 MouseReel Available	Min.: 1 Mult.: 1 : 900
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 2100V 2POLE AXIAL LEAD HV GDT GTCA28-212M-R03 Littelfuse 1: $3.58 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	$3.58 $2.74 $2.27 $2.09 View $1.99 $1.93	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 90V 3POLE AXIAL LEADS GDT GTCA38-900M-R10 Littelfuse 1: $2.55 1,024In 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	1,024In Stock	$2.55 $1.96 $1.62 $1.50 View $1.37 $1.33	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 1000V 2POLE AXIAL LEAD HV GDT GTCA28-102M-R03 Littelfuse 1: $3.58 760In Stock	Mfr. Part No. GTCA28-102M-R03 Mouser Part No 650-GTCA28-102M-R03	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 1000V 2POLE AXIAL LEAD HV GDT Learn More about Littelfuse GTCA28 gdts	Datasheet	760In Stock	$3.58 $2.74 $2.27 $2.09 $1.93	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 90V 2POLE AXIAL LEADS GDT GTCA26-900M-R05 Littelfuse 1: $3.82 126In 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	126In Stock	$3.82 $2.51 $1.86 $1.66 View $1.55 $1.53 Quote	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 $0.596 $0.557	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 230V 2POLE SMT GDT GTCS28-231M-R10-2 Littelfuse 1: $3.59 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 $3.59 $2.34 $1.83 Reel $1.60 $1.42 MouseReel Available	Min.: 1 Mult.: 1 : 500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3MM 300V 2POLE SMT GDT GTCS23-301M-R01-2 Littelfuse 1: $1.29 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 $1.29 $1.05 $0.811 $0.667 Reel $0.571 View $0.573 $0.568 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 50V 2POLE AXIAL LEADS GDT GTCA26-501M-R05 Littelfuse 1: $2.73 771In Stock	Mfr. Part No. GTCA26-501M-R05 Mouser Part No 650-GTCA26-501M-R05	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 6MM 50V 2POLE AXIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	771In Stock	$2.73 $2.09 $1.73 $1.61 View $1.46 $1.43	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE AXIAL LEADS GDT GTCA28-750M-R10 Littelfuse 1: $1.76 887In Stock	Mfr. Part No. GTCA28-750M-R10 Mouser Part No 650-GTCA28-750M-R10	Littelfuse	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 8MM 75V 2POLE AXIAL LEADS GDT Learn More about Littelfuse gas discharge tubes	Datasheet	887In Stock	$1.76 $1.40 $1.22 $1.21 $1.16	Min.: 1 Mult.: 1