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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 16volts 5uA 15.3 Amps Bi-Dir SMAJ16CA Bourns 1: 0,533 € 772In Stock 10 000Expected 23/11/2026	Mfr. Part No. SMAJ16CA Mouser Part No 652-SMAJ16CA	Bourns	ESD Protection Diodes / TVS Diodes 16volts 5uA 15.3 Amps Bi-Dir Learn More about Bourns smxj	Datasheet	772In Stock 10 000Expected 23/11/2026	Cut Tape 0,533 € 0,239 € 0,21 € 0,157 € Reel 0,091 € View 0,141 € 0,116 € 0,089 € 0,083 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 16volts 400W 5% Bi-Dir. AEC-Q101 SMAJ16CA-Q Bourns 1: 0,55 € 5 648In Stock 10 000Expected 29/06/2027	Mfr. Part No. SMAJ16CA-Q Mouser Part No 652-SMAJ16CA-Q	Bourns	ESD Protection Diodes / TVS Diodes 16volts 400W 5% Bi-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	5 648In Stock 10 000Expected 29/06/2027	Cut Tape 0,55 € 0,247 € 0,217 € 0,164 € Reel 0,116 € View 0,142 € 0,101 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 17volts 5uA 14.5 Amps Uni-Dir SMAJ17A Bourns 1: 0,421 € 6 152In Stock 10 000Expected 02/06/2027	Mfr. Part No. SMAJ17A Mouser Part No 652-SMAJ17A	Bourns	ESD Protection Diodes / TVS Diodes 17volts 5uA 14.5 Amps Uni-Dir Learn More about Bourns smxj	Datasheet	6 152In Stock 10 000Expected 02/06/2027	Cut Tape 0,421 € 0,20 € 0,175 € 0,132 € Reel 0,087 € View 0,124 € 0,108 € 0,076 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 180volts 1uA 1.4 Amps Uni-Dir SMAJ180A Bourns 1: 0,80 € 897In Stock	Mfr. Part No. SMAJ180A Mouser Part No 652-SMAJ180A	Bourns	ESD Protection Diodes / TVS Diodes 180volts 1uA 1.4 Amps Uni-Dir Learn More about Bourns smxj	Datasheet	897In Stock	Cut Tape 0,80 € 0,365 € 0,322 € 0,246 € Reel 0,168 € View 0,231 € 0,212 € 0,148 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 18volts 5uA 13.7 Amps Uni-Dir SMAJ18A Bourns 1: 0,447 € 9 345In Stock 10 000Expected 14/07/2027	Mfr. Part No. SMAJ18A Mouser Part No 652-SMAJ18A	Bourns	ESD Protection Diodes / TVS Diodes 18volts 5uA 13.7 Amps Uni-Dir Learn More about Bourns smxj	Datasheet	9 345In Stock 10 000Expected 14/07/2027	Cut Tape 0,447 € 0,20 € 0,175 € 0,132 € Reel 0,083 € View 0,127 € 0,11 € 0,072 € 0,071 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 18volts 400W 5% Uni-Dir. AEC-Q101 SMAJ18A-Q Bourns 1: 0,413 € 8 708In Stock	Mfr. Part No. SMAJ18A-Q Mouser Part No 652-SMAJ18A-Q	Bourns	ESD Protection Diodes / TVS Diodes 18volts 400W 5% Uni-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	8 708In Stock	Cut Tape 0,413 € 0,223 € 0,184 € 0,146 € Reel 0,103 € View 0,133 € 0,126 € 0,09 € 0,089 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 18volts 400W 5% Bi-Dir. AEC-Q101 SMAJ18CA-Q Bourns 1: 0,55 € 2 896In Stock 10 000Expected 15/03/2027	Mfr. Part No. SMAJ18CA-Q Mouser Part No 652-SMAJ18CA-Q	Bourns	ESD Protection Diodes / TVS Diodes 18volts 400W 5% Bi-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	2 896In Stock 10 000Expected 15/03/2027	Cut Tape 0,55 € 0,247 € 0,217 € 0,164 € Reel 0,116 € View 0,142 € 0,101 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 20volts 5uA 12.3 Amps Uni-Dir SMAJ20A Bourns 1: 0,447 € 11 297In Stock	Mfr. Part No. SMAJ20A Mouser Part No 652-SMAJ20A	Bourns	ESD Protection Diodes / TVS Diodes 20volts 5uA 12.3 Amps Uni-Dir Learn More about Bourns smxj	Datasheet	11 297In Stock	Cut Tape 0,447 € 0,20 € 0,175 € 0,132 € Reel 0,08 € View 0,115 € 0,108 € 0,071 € 0,066 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 20volts 5uA 12.3 Amps Bi-Dir SMAJ20CA Bourns 1: 0,413 € 12 646In Stock	Mfr. Part No. SMAJ20CA Mouser Part No 652-SMAJ20CA	Bourns	ESD Protection Diodes / TVS Diodes 20volts 5uA 12.3 Amps Bi-Dir Learn More about Bourns smxj	Datasheet	12 646In Stock	Cut Tape 0,413 € 0,22 € 0,165 € 0,131 € Reel 0,094 € View 0,119 € 0,112 € 0,083 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 22volts 5uA 11.2 Amps Uni-Dir SMAJ22A Bourns 1: 0,447 € 412In Stock 25 000Expected 15/03/2027	Mfr. Part No. SMAJ22A Mouser Part No 652-SMAJ22A	Bourns	ESD Protection Diodes / TVS Diodes 22volts 5uA 11.2 Amps Uni-Dir Learn More about Bourns smxj	Datasheet	412In Stock 25 000Expected 15/03/2027	Cut Tape 0,447 € 0,20 € 0,175 € 0,132 € Reel 0,077 € View 0,124 € 0,108 € 0,076 € 0,072 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 22volts 400W 5% Uni-Dir. AEC-Q101 SMAJ22A-Q Bourns 1: 0,499 € 7 183In Stock	Mfr. Part No. SMAJ22A-Q Mouser Part No 652-SMAJ22A-Q	Bourns	ESD Protection Diodes / TVS Diodes 22volts 400W 5% Uni-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	7 183In Stock	Cut Tape 0,499 € 0,223 € 0,195 € 0,147 € Reel 0,115 € View 0,144 € 0,124 € 0,088 € 0,086 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 22volts 400W 5% Bi-Dir. AEC-Q101 SMAJ22CA-Q Bourns 1: 0,55 € 8 438In Stock	Mfr. Part No. SMAJ22CA-Q Mouser Part No 652-SMAJ22CA-Q	Bourns	ESD Protection Diodes / TVS Diodes 22volts 400W 5% Bi-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	8 438In Stock	Cut Tape 0,55 € 0,247 € 0,217 € 0,164 € Reel 0,116 € View 0,142 € 0,101 € 0,10 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 24volts 400W 5% Uni-Dir. AEC-Q101 SMAJ24A-Q Bourns 1: 0,499 € 9 972In Stock	Mfr. Part No. SMAJ24A-Q Mouser Part No 652-SMAJ24A-Q	Bourns	ESD Protection Diodes / TVS Diodes 24volts 400W 5% Uni-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	9 972In Stock	Cut Tape 0,499 € 0,223 € 0,195 € 0,147 € Reel 0,103 € View 0,145 € 0,127 € 0,09 € 0,087 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 24volts 400W 5% Bi-Dir. AEC-Q101 SMAJ24CA-Q Bourns 1: 0,55 € 11 753In Stock	Mfr. Part No. SMAJ24CA-Q Mouser Part No 652-SMAJ24CA-Q	Bourns	ESD Protection Diodes / TVS Diodes 24volts 400W 5% Bi-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	11 753In Stock	Cut Tape 0,55 € 0,247 € 0,217 € 0,164 € Reel 0,114 € View 0,149 € 0,138 € 0,101 € 0,098 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 26volts 400W 5% Uni-Dir. AEC-Q101 SMAJ26A-Q Bourns 1: 0,525 € 4 499In Stock	Mfr. Part No. SMAJ26A-Q Mouser Part No 652-SMAJ26A-Q	Bourns	ESD Protection Diodes / TVS Diodes 26volts 400W 5% Uni-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	4 499In Stock	Cut Tape 0,525 € 0,237 € 0,207 € 0,156 € Reel 0,109 € View 0,137 € 0,124 € 0,095 € 0,091 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 26volts 400W 5% Bi-Dir. AEC-Q101 SMAJ26CA-Q Bourns 1: 0,55 € 838In Stock 50 000Expected 18/01/2027	Mfr. Part No. SMAJ26CA-Q Mouser Part No 652-SMAJ26CA-Q	Bourns	ESD Protection Diodes / TVS Diodes 26volts 400W 5% Bi-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	838In Stock 50 000Expected 18/01/2027	Cut Tape 0,55 € 0,247 € 0,217 € 0,188 € Reel 0,116 € View 0,147 € 0,129 € 0,10 € 0,097 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 26volts 400W 5% Bi-Dir. AEC-Q101 SMAJ26CA-QH Bourns 1: 0,757 € 4 000In Stock	Mfr. Part No. SMAJ26CA-QH Mouser Part No 652-SMAJ26CA-QH	Bourns	ESD Protection Diodes / TVS Diodes 26volts 400W 5% Bi-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	4 000In Stock	Cut Tape 0,757 € 0,473 € 0,309 € 0,233 € Reel 0,164 € View 0,212 € 0,194 € 0,16 € 0,146 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
ESD Protection Diodes / TVS Diodes 28volts 5uA 8.8 Amps Uni-Dir SMAJ28A-H Bourns 1: 0,55 € 1 826In Stock	Mfr. Part No. SMAJ28A-H Mouser Part No 652-SMAJ28A-H	Bourns	ESD Protection Diodes / TVS Diodes 28volts 5uA 8.8 Amps Uni-Dir Learn More about Bourns smxj	Datasheet	1 826In Stock	Cut Tape 0,55 € 0,384 € 0,187 € 0,157 € Reel 0,079 € View 0,109 € 0,095 € 0,071 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
ESD Protection Diodes / TVS Diodes 28volts 400W 5% Uni-Dir. AEC-Q101 SMAJ28A-Q Bourns 1: 0,43 € 8 955In Stock 30 000On Order	Mfr. Part No. SMAJ28A-Q Mouser Part No 652-SMAJ28A-Q	Bourns	ESD Protection Diodes / TVS Diodes 28volts 400W 5% Uni-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	8 955In Stock 30 000On Order On Order Ship Dates Mfr. No: SMAJ28A-Q Stock: 8 955 Can Dispatch Immediately On Order: 10 000 Expected 29/03/2027 20 000 Expected 06/05/2027 Factory Lead Time: 22 Weeks	Cut Tape 0,43 € 0,237 € 0,194 € 0,155 € Reel 0,121 € View 0,138 € 0,124 € 0,09 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 28volts 400W 5% Bi-Dir. AEC-Q101 SMAJ28CA-Q Bourns 1: 0,55 € 4 303In Stock 10 000Expected 11/03/2027	Mfr. Part No. SMAJ28CA-Q Mouser Part No 652-SMAJ28CA-Q	Bourns	ESD Protection Diodes / TVS Diodes 28volts 400W 5% Bi-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	4 303In Stock 10 000Expected 11/03/2027	Cut Tape 0,55 € 0,247 € 0,217 € 0,164 € Reel 0,114 € View 0,142 € 0,101 € 0,095 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 30volts 400W 5% Uni-Dir. AEC-Q101 SMAJ30A-Q Bourns 1: 0,525 € 9 899In Stock	Mfr. Part No. SMAJ30A-Q Mouser Part No 652-SMAJ30A-Q	Bourns	ESD Protection Diodes / TVS Diodes 30volts 400W 5% Uni-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	9 899In Stock	Cut Tape 0,525 € 0,237 € 0,207 € 0,156 € Reel 0,103 € View 0,144 € 0,124 € 0,09 € 0,088 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 30volts 400W 5% Uni-Dir. AEC-Q101 SMAJ30A-QH Bourns 1: 0,869 € 3 939In Stock	Mfr. Part No. SMAJ30A-QH Mouser Part No 652-SMAJ30A-QH	Bourns	ESD Protection Diodes / TVS Diodes 30volts 400W 5% Uni-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	3 939In Stock	Cut Tape 0,869 € 0,544 € 0,347 € 0,259 € Reel 0,153 € View 0,21 € 0,181 € 0,151 € 0,143 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
ESD Protection Diodes / TVS Diodes 30volts 5uA 8.3 Amps Bi-Dir SMAJ30CA Bourns 1: 0,499 € 1 052In Stock 50 000On Order	Mfr. Part No. SMAJ30CA Mouser Part No 652-SMAJ30CA	Bourns	ESD Protection Diodes / TVS Diodes 30volts 5uA 8.3 Amps Bi-Dir Learn More about Bourns smxj	Datasheet	1 052In Stock 50 000On Order On Order Ship Dates Mfr. No: SMAJ30CA Stock: 1 052 Can Dispatch Immediately On Order: 25 000 Expected 12/05/2027 25 000 Expected 07/07/2027 Factory Lead Time: 22 Weeks	Cut Tape 0,499 € 0,225 € 0,198 € 0,149 € Reel 0,111 € View 0,14 € 0,13 € 0,096 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 30volts 400W 5% Bi-Dir. AEC-Q101 SMAJ30CA-Q Bourns 1: 0,55 € 3 417In Stock 10 000Expected 27/04/2027	Mfr. Part No. SMAJ30CA-Q Mouser Part No 652-SMAJ30CA-Q	Bourns	ESD Protection Diodes / TVS Diodes 30volts 400W 5% Bi-Dir. AEC-Q101 Learn More about Bourns smxj q aec q101 tvs diodes	Datasheet	3 417In Stock 10 000Expected 27/04/2027	Cut Tape 0,55 € 0,247 € 0,217 € 0,164 € Reel 0,116 € View 0,154 € 0,142 € 0,101 € 0,097 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 33volts 5uA 7.5 Amps Uni-Dir SMAJ33A Bourns 1: 0,447 € 1 506In Stock 65 000On Order	Mfr. Part No. SMAJ33A Mouser Part No 652-SMAJ33A	Bourns	ESD Protection Diodes / TVS Diodes 33volts 5uA 7.5 Amps Uni-Dir Learn More about Bourns smxj	Datasheet	1 506In Stock 65 000On Order On Order Ship Dates Mfr. No: SMAJ33A Stock: 1 506 Can Dispatch Immediately On Order: 20 000 Expected 04/05/2027 45 000 Expected 30/06/2027 Factory Lead Time: 22 Weeks	Cut Tape 0,447 € 0,20 € 0,175 € 0,132 € Reel 0,095 € View 0,124 € 0,108 € 0,082 € 0,075 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000

Gas Discharge Tube for RS-485 Ports

Types of Circuit Protection

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Gas Discharge Tube for RS-485 Ports

Types of Circuit Protection