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Gas Discharge Tube for RS-485 Ports

Bourns Gas Discharge Tube (GDT) for RS-485 Ports is designed to meet industry standards on RS-485 port interfaces and to provide circuit protection in noisy and harsh electrical environments. For exposed lines that may see large and fast surges and where failure is not acceptable, a three-stage Bourns protection system is recommended.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.
ESD Protection Diodes / TVS Diodes 51volts 1.5kW 5% Bi-Dir. AEC-Q101 SMCJ51CA-Q Bourns 1: 1,17 € 11 647In Stock	Mfr. Part No. SMCJ51CA-Q Mouser Part No 652-SMCJ51CA-Q	Bourns	ESD Protection Diodes / TVS Diodes 51volts 1.5kW 5% Bi-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	11 647In Stock	Cut Tape 1,17 € 0,736 € 0,482 € 0,372 € 0,341 € Reel 0,289 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
Board Mount Surge Protectors Bi-directional TBU TBU-CA065-200-WH Bourns 1: 1,87 € 27 541In Stock 42 000Expected 15/02/2027	Mfr. Part No. TBU-CA065-200-WH Mouser Part No 652-TBU-CA065-200-WH	Bourns	Board Mount Surge Protectors Bi-directional TBU Learn More about Bourns tbu ca high speed protectors	Datasheet	27 541In Stock 42 000Expected 15/02/2027	Cut Tape 1,87 € 1,61 € 1,07 € 0,894 € Reel 0,773 € View 0,803 € 0,771 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
Board Mount Surge Protectors Bi-directional TBU TBU-CA065-300-WH Bourns 1: 2,06 € 32 735In Stock 39 000Expected 26/05/2027	Mfr. Part No. TBU-CA065-300-WH Mouser Part No 652-TBU-CA065-300-WH	Bourns	Board Mount Surge Protectors Bi-directional TBU Learn More about Bourns tbu ca high speed protectors	Datasheet	32 735In Stock 39 000Expected 26/05/2027	Cut Tape 2,06 € 1,61 € 1,11 € 0,894 € 0,831 € Reel 0,817 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
Board Mount Surge Protectors Bi-directional TBU TBU-CA085-050-WH Bourns 1: 1,97 € 40 494In Stock	Mfr. Part No. TBU-CA085-050-WH Mouser Part No 652-TBU-CA085-050-WH	Bourns	Board Mount Surge Protectors Bi-directional TBU Learn More about Bourns tbu ca high speed protectors	Datasheet	40 494In Stock	Cut Tape 1,97 € 1,49 € 1,06 € 0,894 € 0,79 € Reel 0,771 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 420volts 3-electrode 2030-42T-SM-RPLF Bourns 1: 2,38 € 2 292In Stock	Mfr. Part No. 2030-42T-SM-RPLF Mouser Part No 652-2030-42T-SM-RPLF	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 420volts 3-electrode Learn More about Bourns 2030 xxT SM	Datasheet	2 292In Stock	Cut Tape 2,38 € 2,20 € 1,82 € 1,69 € View Reel 1,28 € 1,40 € 1,30 € 1,28 € MouseReel Available	Min.: 1 Mult.: 1 : 1 000
Varistors Chip Guard 0402 5 Volts CG0402MLC-05LG Bourns 1: 0,258 € 53 108In Stock 90 000Expected 11/11/2026	Mfr. Part No. CG0402MLC-05LG Mouser Part No 652-CG0402MLC-05LG	Bourns	Varistors Chip Guard 0402 5 Volts Learn More about Bourns mlc protectors	Datasheet	53 108In Stock 90 000Expected 11/11/2026	Cut Tape 0,258 € 0,154 € 0,121 € 0,114 € Reel 0,081 € View 0,109 € 0,097 € 0,089 € 0,079 € MouseReel Available	Min.: 1 Mult.: 1 : 10 000
Varistors Chip Guard 0402 12 Volts CG0402MLC-12LG Bourns 1: 0,215 € 19 197In Stock	Mfr. Part No. CG0402MLC-12LG Mouser Part No 652-CG0402MLC-12LG	Bourns	Varistors Chip Guard 0402 12 Volts Learn More about Bourns mlc protectors	Datasheet	19 197In Stock	Cut Tape 0,215 € 0,132 € 0,104 € 0,099 € Reel 0,082 € View 0,094 € 0,089 € 0,087 € 0,081 € MouseReel Available	Min.: 1 Mult.: 1 : 10 000
Varistors Chip Guard 0402 24 Volts CG0402MLC-24LG Bourns 1: 0,215 € 18 445In Stock	Mfr. Part No. CG0402MLC-24LG Mouser Part No 652-CG0402MLC-24LG	Bourns	Varistors Chip Guard 0402 24 Volts Learn More about Bourns mlc protectors	Datasheet	18 445In Stock	Cut Tape 0,215 € 0,128 € 0,101 € 0,095 € Reel 0,079 € View 0,091 € 0,087 € 0,083 € 0,078 € MouseReel Available	Min.: 1 Mult.: 1 : 10 000
Varistors Chip Guard 0402 3.3 Volts CG0402MLC-3.3LG Bourns 1: 0,215 € 27 597In Stock	Mfr. Part No. CG0402MLC-3.3LG Mouser Part No 652-CG0402MLC-3.3LG	Bourns	Varistors Chip Guard 0402 3.3 Volts Learn More about Bourns mlc protectors	Datasheet	27 597In Stock	Cut Tape 0,215 € 0,128 € 0,101 € 0,095 € Reel 0,083 € View 0,091 € 0,086 € 0,083 € 0,082 € MouseReel Available	Min.: 1 Mult.: 1 : 10 000
Varistors CHIP GUARD 5VOLT CG0402MLU-05G Bourns 1: 0,241 € 48 778In Stock 100 000Expected 25/02/2027	Mfr. Part No. CG0402MLU-05G Mouser Part No 652-CG0402MLU-05G	Bourns	Varistors CHIP GUARD 5VOLT Learn More about Bourns gdt	Datasheet	48 778In Stock 100 000Expected 25/02/2027	Cut Tape 0,241 € 0,15 € 0,118 € 0,112 € Reel 0,095 € View 0,107 € 0,101 € 0,099 € 0,094 € MouseReel Available	Min.: 1 Mult.: 1 : 10 000
Varistors CHIP GUARD 3.3VOLT CG0402MLU-3.3G Bourns 1: 0,241 € 25 811In Stock	Mfr. Part No. CG0402MLU-3.3G Mouser Part No 652-CG0402MLU-3.3G	Bourns	Varistors CHIP GUARD 3.3VOLT Learn More about Bourns gdt	Datasheet	25 811In Stock	Cut Tape 0,241 € 0,15 € 0,118 € 0,117 € Reel 0,117 € MouseReel Available	Min.: 1 Mult.: 1 : 10 000
Varistors Chip Guard 0603 5 Volts CG0603MLC-05LE Bourns 1: 0,206 € 42 642In Stock	Mfr. Part No. CG0603MLC-05LE Mouser Part No 652-CG0603MLC-05LE	Bourns	Varistors Chip Guard 0603 5 Volts Learn More about Bourns mlc protectors	Datasheet	42 642In Stock	Cut Tape 0,206 € 0,142 € 0,118 € 0,112 € Reel 0,099 € View 0,106 € 0,104 € 0,095 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
Varistors Chip Guard 0603 5 Volts CG0603MLC-05LEA Bourns 1: 0,258 € 16 053In Stock	Mfr. Part No. CG0603MLC-05LEA Mouser Part No 652-CG0603MLC-05LEA	Bourns	Varistors Chip Guard 0603 5 Volts Learn More about Bourns mlc protectors	Datasheet	16 053In Stock	Cut Tape 0,258 € 0,155 € 0,123 € 0,116 € Reel 0,098 € View 0,111 € 0,106 € 0,093 € 0,092 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
Varistors CHIP GUARD CG0603MLC-24LE Bourns 1: 0,241 € 18 445In Stock	Mfr. Part No. CG0603MLC-24LE Mouser Part No 652-CG0603MLC-24LE	Bourns	Varistors CHIP GUARD Learn More about Bourns mlc protectors	Datasheet	18 445In Stock	Cut Tape 0,241 € 0,15 € 0,118 € 0,112 € Reel 0,097 € View 0,107 € 0,101 € 0,094 € 0,092 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
Varistors CHIP GUARD 5VOLT CG0603MLU-05E Bourns 1: 0,275 € 26 430In Stock	Mfr. Part No. CG0603MLU-05E Mouser Part No 652-CG0603MLU-05E	Bourns	Varistors CHIP GUARD 5VOLT Learn More about Bourns gdt	Datasheet	26 430In Stock	Cut Tape 0,275 € 0,166 € 0,132 € 0,125 € Reel 0,109 € View 0,12 € 0,114 € 0,105 € 0,103 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
Varistors CHIP GUARD 3.3VOLT CG0603MLU-3.3E Bourns 1: 0,275 € 19 652In Stock 25 000Expected 08/03/2027	Mfr. Part No. CG0603MLU-3.3E Mouser Part No 652-CG0603MLU-3.3E	Bourns	Varistors CHIP GUARD 3.3VOLT Learn More about Bourns gdt	Datasheet	19 652In Stock 25 000Expected 08/03/2027	Cut Tape 0,275 € 0,166 € 0,132 € 0,125 € Reel 0,113 € View 0,12 € 0,117 € 0,111 € 0,109 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 12V 1500W BiDir 1.5SMC12CA Bourns 1: 0,86 € 12 001In Stock	Mfr. Part No. 1.5SMC12CA Mouser Part No 652-1.5SMC12CA	Bourns	ESD Protection Diodes / TVS Diodes 12V 1500W BiDir Learn More about Bourns 1 5smc series	Datasheet	12 001In Stock	Cut Tape 0,86 € 0,396 € 0,35 € 0,269 € Reel 0,209 € View 0,206 € 0,188 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
ESD Protection Diodes / TVS Diodes 13V 1500W UniDir 1.5SMC13A Bourns 1: 0,80 € 10 418In Stock	Mfr. Part No. 1.5SMC13A Mouser Part No 652-1.5SMC13A	Bourns	ESD Protection Diodes / TVS Diodes 13V 1500W UniDir Learn More about Bourns 1 5smc series	Datasheet	10 418In Stock	Cut Tape 0,80 € 0,367 € 0,309 € 0,249 € Reel 0,193 € View 0,245 € 0,186 € 0,173 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
ESD Protection Diodes / TVS Diodes 150V 1500W UniDir 1.5SMC150A Bourns 1: 0,912 € 9 023In Stock	Mfr. Part No. 1.5SMC150A Mouser Part No 652-1.5SMC150A	Bourns	ESD Protection Diodes / TVS Diodes 150V 1500W UniDir Learn More about Bourns 1 5smc series	Datasheet	9 023In Stock	Cut Tape 0,912 € 0,421 € 0,372 € 0,287 € Reel 0,224 € View 0,273 € 0,201 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
ESD Protection Diodes / TVS Diodes 180V 1500W UniDir 1.5SMC180A Bourns 1: 0,912 € 7 708In Stock 12 000Expected 17/11/2026	Mfr. Part No. 1.5SMC180A Mouser Part No 652-1.5SMC180A	Bourns	ESD Protection Diodes / TVS Diodes 180V 1500W UniDir Learn More about Bourns 1 5smc series	Datasheet	7 708In Stock 12 000Expected 17/11/2026	Cut Tape 0,912 € 0,421 € 0,372 € 0,287 € Reel 0,224 € View 0,282 € 0,197 € 0,185 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
ESD Protection Diodes / TVS Diodes 18V 1500W BiDir 1.5SMC18CA Bourns 1: 0,86 € 13 975In Stock	Mfr. Part No. 1.5SMC18CA Mouser Part No 652-1.5SMC18CA	Bourns	ESD Protection Diodes / TVS Diodes 18V 1500W BiDir Learn More about Bourns 1 5smc series	Datasheet	13 975In Stock	Cut Tape 0,86 € 0,396 € 0,35 € 0,269 € Reel 0,209 € View 0,184 € 0,171 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
ESD Protection Diodes / TVS Diodes 220V 1500W UniDir 1.5SMC220A Bourns 1: 1,14 € 5 264In Stock	Mfr. Part No. 1.5SMC220A Mouser Part No 652-1.5SMC220A	Bourns	ESD Protection Diodes / TVS Diodes 220V 1500W UniDir Learn More about Bourns 1 5smc series	Datasheet	5 264In Stock	Cut Tape 1,14 € 0,717 € 0,532 € 0,473 € Reel 0,29 € View 0,367 € 0,316 € 0,273 € 0,25 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
ESD Protection Diodes / TVS Diodes 300V 1500W UniDir 1.5SMC300A Bourns 1: 1,17 € 6 949In Stock 27 000On Order	Mfr. Part No. 1.5SMC300A Mouser Part No 652-1.5SMC300A	Bourns	ESD Protection Diodes / TVS Diodes 300V 1500W UniDir Learn More about Bourns 1 5smc series	Datasheet	6 949In Stock 27 000On Order On Order Ship Dates Mfr. No: 1.5SMC300A Stock: 6 949 Can Dispatch Immediately On Order: 12 000 Expected 02/08/2027 15 000 Expected 09/08/2027 Factory Lead Time: 18 Weeks	Cut Tape 1,17 € 0,736 € 0,564 € 0,446 € Reel 0,30 € View 0,372 € 0,316 € 0,273 € 0,259 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
ESD Protection Diodes / TVS Diodes 30V 1500W UniDir 1.5SMC30A Bourns 1: 0,851 € 12 000In Stock	Mfr. Part No. 1.5SMC30A Mouser Part No 652-1.5SMC30A	Bourns	ESD Protection Diodes / TVS Diodes 30V 1500W UniDir Learn More about Bourns 1 5smc series	Datasheet	12 000In Stock	Cut Tape 0,851 € 0,39 € 0,344 € 0,263 € Reel 0,204 € View 0,245 € 0,183 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
ESD Protection Diodes / TVS Diodes 30V 1500W BiDir 1.5SMC30CA Bourns 1: 0,86 € 13 617In Stock	Mfr. Part No. 1.5SMC30CA Mouser Part No 652-1.5SMC30CA	Bourns	ESD Protection Diodes / TVS Diodes 30V 1500W BiDir Learn More about Bourns 1 5smc series	Datasheet	13 617In Stock	Cut Tape 0,86 € 0,366 € 0,276 € 0,218 € 0,209 € Reel 0,188 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000

Gas Discharge Tube for RS-485 Ports

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Gas Discharge Tube for RS-485 Ports

Types of Circuit Protection