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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 (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
ESD Protection Diodes / TVS Diodes 22volts 5uA 84.4 Amps Bi-Dir SMLJ22CA Bourns 1: £1.39 33,738In Stock	Mfr. Part No. SMLJ22CA Mouser Part No 652-SMLJ22CA	Bourns	ESD Protection Diodes / TVS Diodes 22volts 5uA 84.4 Amps Bi-Dir Learn More about Bourns _smlj	Datasheet	33,738In Stock	Cut Tape £1.39 £0.882 £0.475 £0.432 View Reel £0.332 £0.367 £0.358 £0.332 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 3kA 430V PTVS Diode Bidirectional PTVS3-430C-TH Bourns 1: £43.12 1,133In Stock	Mfr. Part No. PTVS3-430C-TH Mouser Part No 652-PTVS3-430C-TH	Bourns	ESD Protection Diodes / TVS Diodes 3kA 430V PTVS Diode Bidirectional Learn More about Bourns PTVS	Datasheet	1,133In Stock	£43.12 £33.65 £31.88 £31.72	Min.: 1 Mult.: 1
Board Mount Surge Protectors 100mA 850Vimp P850-G120-WH Bourns 1: £1.79 23,320In Stock	Mfr. Part No. P850-G120-WH Mouser Part No 652-P850-G120-WH	Bourns	Board Mount Surge Protectors 100mA 850Vimp Learn More about Bourns Bourns_TBU	Datasheet	23,320In Stock	Cut Tape £1.79 £1.55 £1.07 £0.871 £0.818 Reel £0.813 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Varistors CHIP GUARD CG0402MLC-24LGA Bourns 1: £0.458 26,824In Stock	Mfr. Part No. CG0402MLC-24LGA Mouser Part No 652-CG0402MLC-24LGA	Bourns	Varistors CHIP GUARD Learn More about Bourns mlc protectors	Datasheet	26,824In Stock	Cut Tape £0.458 £0.293 £0.182 £0.126 Reel £0.074 View £0.109 £0.097 £0.086 £0.073 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Varistors Chip Guard 0402 12 VOLTS CG0402MLC-12LGA Bourns 1: £0.188 42,401In Stock	Mfr. Part No. CG0402MLC-12LGA Mouser Part No 652-CG0402MLC-12LGA	Bourns	Varistors Chip Guard 0402 12 VOLTS Learn More about Bourns mlc protectors	Datasheet	42,401In Stock	Cut Tape £0.188 £0.112 £0.088 £0.083 Reel £0.069 View £0.079 £0.076 £0.072 £0.067 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes Steering Diode 4 Line Array CDSOT236-0502 Bourns 1: £0.766 20,772In Stock 12,000Expected 09/11/2026	Mfr. Part No. CDSOT236-0502 Mouser Part No 652-CDSOT236-0502	Bourns	ESD Protection Diodes / TVS Diodes Steering Diode 4 Line Array Learn More about Bourns gdt	Datasheet	20,772In Stock 12,000Expected 09/11/2026	Cut Tape £0.766 £0.475 £0.31 £0.233 Reel £0.18 View £0.212 £0.161 £0.148 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 15V 5kW 5% Bi-Dir. AEC-Q101 5.0SMDJ15CA-Q Bourns 1: £2.38 6,000In Stock 30,000On Order	Mfr. Part No. 5.0SMDJ15CA-Q Mouser Part No 652-5.0SMDJ15CA-Q	Bourns	ESD Protection Diodes / TVS Diodes 15V 5kW 5% Bi-Dir. AEC-Q101 Learn More about Bourns 50smdj q	Datasheet	6,000In Stock 30,000On Order On Order Ship Dates Mfr. No: 5.0SMDJ15CA-Q Stock: 6,000 Can Dispatch Immediately On Order: 6,000 Expected 01/02/2027 15,000 Expected 08/02/2027 9,000 Expected 08/03/2027 Factory Lead Time: 18 Weeks	Cut Tape £2.38 £1.54 £1.26 £1.06 £0.826 Reel £0.67 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 100V 1500W BiDir 1.5SMC100CA Bourns 1: £0.818 12,013In Stock	Mfr. Part No. 1.5SMC100CA Mouser Part No 652-1.5SMC100CA	Bourns	ESD Protection Diodes / TVS Diodes 100V 1500W BiDir Learn More about Bourns 1 5smc series	Datasheet	12,013In Stock	Cut Tape £0.818 £0.378 £0.334 £0.258 Reel £0.201 View £0.249 £0.198 £0.174 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 110V 1500W UniDir 1.5SMC110A Bourns 1: £0.803 13,030In Stock	Mfr. Part No. 1.5SMC110A Mouser Part No 652-1.5SMC110A	Bourns	ESD Protection Diodes / TVS Diodes 110V 1500W UniDir Learn More about Bourns 1 5smc series	Datasheet	13,030In Stock	Cut Tape £0.803 £0.368 £0.326 £0.251 Reel £0.195 View £0.238 £0.187 £0.166 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 20V 1500W UniDir 1.5SMC20A Bourns 1: £0.698 15,836In Stock	Mfr. Part No. 1.5SMC20A Mouser Part No 652-1.5SMC20A	Bourns	ESD Protection Diodes / TVS Diodes 20V 1500W UniDir Learn More about Bourns 1 5smc series	Datasheet	15,836In Stock	Cut Tape £0.698 £0.32 £0.283 £0.217 Reel £0.168 View £0.214 £0.163 £0.151 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 68V 1500W BiDir 1.5SMC68CA Bourns 1: £0.818 9,998In Stock	Mfr. Part No. 1.5SMC68CA Mouser Part No 652-1.5SMC68CA	Bourns	ESD Protection Diodes / TVS Diodes 68V 1500W BiDir Learn More about Bourns 1 5smc series	Datasheet	9,998In Stock	Cut Tape £0.818 £0.285 £0.244 £0.233 Reel £0.196 View £0.232 £0.169 £0.159 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 28V 5KW 5% BI DO-214AB (SMC) 5.0SMDJ28CA Bourns 1: £1.97 18,121In Stock	Mfr. Part No. 5.0SMDJ28CA Mouser Part No 652-5.0SMDJ28CA	Bourns	ESD Protection Diodes / TVS Diodes 28V 5KW 5% BI DO-214AB (SMC) Learn More about Bourns 50smdj tvs diodes	Datasheet	18,121In Stock	Cut Tape £1.97 £1.27 £0.969 £0.719 View Reel £0.537 £0.612 £0.608 £0.537 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 70V 5KW 5% UNI DO-214AB (SMC) 5.0SMDJ70A Bourns 1: £2.01 11,521In Stock	Mfr. Part No. 5.0SMDJ70A Mouser Part No 652-5.0SMDJ70A	Bourns	ESD Protection Diodes / TVS Diodes 70V 5KW 5% UNI DO-214AB (SMC) Learn More about Bourns 50smdj tvs diodes	Datasheet	11,521In Stock	Cut Tape £2.01 £1.29 £1.03 £0.882 Reel £0.575 View £0.689 £0.63 £0.553 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes TVS Diode Array 12VOLT CDNBS08-T12C Bourns 1: £2.48 9,398In Stock	Mfr. Part No. CDNBS08-T12C Mouser Part No 652-CDNBS08-T12C	Bourns	ESD Protection Diodes / TVS Diodes TVS Diode Array 12VOLT Learn More about Bourns gdt	Datasheet	9,398In Stock	Cut Tape £2.48 £1.61 £1.23 £1.11 View Reel £0.812 £0.899 £0.812 £0.812 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes TVS Diode Array 5VOLT CDNBS16-T05C Bourns 1: £4.05 5,398In Stock	Mfr. Part No. CDNBS16-T05C Mouser Part No 652-CDNBS16-T05C	Bourns	ESD Protection Diodes / TVS Diodes TVS Diode Array 5VOLT Learn More about Bourns gdt	Datasheet	5,398In Stock	Cut Tape £4.05 £2.69 £2.10 £1.91 View Reel £1.58 £1.69 £1.58 £1.58 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 10V 600W UniDir P6SMB10A Bourns 1: £0.413 19,605In Stock	Mfr. Part No. P6SMB10A Mouser Part No 652-P6SMB10A	Bourns	ESD Protection Diodes / TVS Diodes 10V 600W UniDir Learn More about Bourns p6smb series diodes	Datasheet	19,605In Stock	Cut Tape £0.413 £0.184 £0.151 £0.12 Reel £0.087 View £0.102 £0.086 £0.077 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 15V 600W BiDir P6SMB15CA Bourns 1: £0.315 84,479In Stock	Mfr. Part No. P6SMB15CA Mouser Part No 652-P6SMB15CA	Bourns	ESD Protection Diodes / TVS Diodes 15V 600W BiDir Learn More about Bourns p6smb series diodes	Datasheet	84,479In Stock	Cut Tape £0.315 £0.153 £0.137 £0.108 Reel £0.084 View £0.107 £0.083 £0.076 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 180volts 1uA 2.1 Amps Bi-Dir SMBJ180CA Bourns 1: £0.788 11,986In Stock	Mfr. Part No. SMBJ180CA Mouser Part No 652-SMBJ180CA	Bourns	ESD Protection Diodes / TVS Diodes 180volts 1uA 2.1 Amps Bi-Dir Learn More about Bourns smxj	Datasheet	11,986In Stock	Cut Tape £0.788 £0.362 £0.32 £0.246 Reel £0.192 View £0.234 £0.189 £0.158 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 440volts 1uA .9 Amps Bi-Dir SMBJ440CA Bourns 1: £0.849 15,353In Stock	Mfr. Part No. SMBJ440CA Mouser Part No 652-SMBJ440CA	Bourns	ESD Protection Diodes / TVS Diodes 440volts 1uA .9 Amps Bi-Dir Learn More about Bourns smxj	Datasheet	15,353In Stock	Cut Tape £0.849 £0.533 £0.35 £0.257 Reel £0.215 View £0.233 £0.208 £0.18 £0.15 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 17volts 5uA 53.3 Amps Bi-Dir SMCJ17CA Bourns 1: £0.818 33,282In Stock	Mfr. Part No. SMCJ17CA Mouser Part No 652-SMCJ17CA	Bourns	ESD Protection Diodes / TVS Diodes 17volts 5uA 53.3 Amps Bi-Dir Learn More about Bourns smxj	Datasheet	33,282In Stock	Cut Tape £0.818 £0.297 £0.255 £0.212 Reel £0.175 View £0.199 £0.172 £0.161 £0.159 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 43volts 1.5kW 5% Bi-Dir. AEC-Q101 SMCJ43CA-Q Bourns 1: £0.995 10,033In Stock	Mfr. Part No. SMCJ43CA-Q Mouser Part No 652-SMCJ43CA-Q	Bourns	ESD Protection Diodes / TVS Diodes 43volts 1.5kW 5% Bi-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	10,033In Stock	Cut Tape £0.995 £0.626 £0.464 £0.413 Reel £0.253 View £0.32 £0.276 £0.238 £0.212 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 48volts 5uA 19.4 Amps Uni-Dir SMCJ48A-H Bourns 1: £0.728 8,383In Stock	Mfr. Part No. SMCJ48A-H Mouser Part No 652-SMCJ48A-H	Bourns	ESD Protection Diodes / TVS Diodes 48volts 5uA 19.4 Amps Uni-Dir Learn More about Bourns smxj	Datasheet	8,383In Stock	Cut Tape £0.728 £0.453 £0.296 £0.223 Reel £0.183 View £0.203 £0.181 £0.153 £0.141 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
ESD Protection Diodes / TVS Diodes 18volts 5uA 102.8 Amps Bi-Dir SMLJ18CA Bourns 1: £1.39 9,090In Stock	Mfr. Part No. SMLJ18CA Mouser Part No 652-SMLJ18CA	Bourns	ESD Protection Diodes / TVS Diodes 18volts 5uA 102.8 Amps Bi-Dir Learn More about Bourns _smlj	Datasheet	9,090In Stock	Cut Tape £1.39 £0.882 £0.663 £0.398 £0.332 Reel £0.332 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 33volts 3kW 5% Bi-Dir. AEC-Q101 SMLJ33CA-Q Bourns 1: £1.51 4,357In Stock	Mfr. Part No. SMLJ33CA-Q Mouser Part No 652-SMLJ33CA-Q	Bourns	ESD Protection Diodes / TVS Diodes 33volts 3kW 5% Bi-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	4,357In Stock	Cut Tape £1.51 £0.995 £0.759 £0.63 Reel £0.405 View £0.496 £0.482 £0.397 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 6volts 1000uA 291.3 Amps Bi-Dir SMLJ6.0CA Bourns 1: £1.39 11,858In Stock	Mfr. Part No. SMLJ6.0CA Mouser Part No 652-SMLJ6.0CA	Bourns	ESD Protection Diodes / TVS Diodes 6volts 1000uA 291.3 Amps Bi-Dir Learn More about Bourns _smlj	Datasheet	11,858In Stock	Cut Tape £1.39 £0.882 £0.663 £0.592 Reel £0.34 View £0.467 £0.41 £0.336 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