Circuit Protection – Mouser Finland

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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.
Varistors Chip Guard 0603 5 Volt AEC-Q200 CGA0603MLC-05E Bourns 1: 0,335 € 4 293In Stock 15 000Expected 11/11/2026	Mfr. Part No. CGA0603MLC-05E Mouser Part No 652-CGA0603MLC-05E	Bourns	Varistors Chip Guard 0603 5 Volt AEC-Q200 Learn More about Bourns mlc protectors	Datasheet	4 293In Stock 15 000Expected 11/11/2026	Cut Tape 0,335 € 0,205 € 0,163 € 0,156 € Reel 0,137 € View 0,149 € 0,142 € 0,132 € 0,131 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 10V 400W BiDir P4SMA10CA Bourns 1: 0,499 € 6 359In Stock	Mfr. Part No. P4SMA10CA Mouser Part No 652-P4SMA10CA	Bourns	ESD Protection Diodes / TVS Diodes 10V 400W BiDir Learn More about Bourns p4sma diode series	Datasheet	6 359In Stock	Cut Tape 0,499 € 0,223 € 0,195 € 0,147 € Reel 0,103 € View 0,145 € 0,127 € 0,083 € 0,081 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 110V 400W UniDir P4SMA110A Bourns 1: 0,516 € 9 985In Stock	Mfr. Part No. P4SMA110A Mouser Part No 652-P4SMA110A	Bourns	ESD Protection Diodes / TVS Diodes 110V 400W UniDir Learn More about Bourns p4sma diode series	Datasheet	9 985In Stock	Cut Tape 0,516 € 0,322 € 0,206 € 0,153 € Reel 0,093 € View 0,124 € 0,11 € 0,083 € 0,077 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 12V 400W BiDir P4SMA12CA Bourns 1: 0,499 € 10 746In Stock	Mfr. Part No. P4SMA12CA Mouser Part No 652-P4SMA12CA	Bourns	ESD Protection Diodes / TVS Diodes 12V 400W BiDir Learn More about Bourns p4sma diode series	Datasheet	10 746In Stock	Cut Tape 0,499 € 0,223 € 0,195 € 0,147 € Reel 0,103 € View 0,145 € 0,127 € 0,09 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 15V 400W UniDir P4SMA15A Bourns 1: 0,447 € 8 024In Stock	Mfr. Part No. P4SMA15A Mouser Part No 652-P4SMA15A	Bourns	ESD Protection Diodes / TVS Diodes 15V 400W UniDir Learn More about Bourns p4sma diode series	Datasheet	8 024In Stock	Cut Tape 0,447 € 0,20 € 0,175 € 0,132 € Reel 0,092 € View 0,127 € 0,11 € 0,08 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 15V 400W BiDir P4SMA15CA Bourns 1: 0,482 € 7 545In Stock	Mfr. Part No. P4SMA15CA Mouser Part No 652-P4SMA15CA	Bourns	ESD Protection Diodes / TVS Diodes 15V 400W BiDir Learn More about Bourns p4sma diode series	Datasheet	7 545In Stock	Cut Tape 0,482 € 0,223 € 0,195 € 0,147 € Reel 0,103 € View 0,145 € 0,127 € 0,09 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 16V 400W UniDir P4SMA16A Bourns 1: 0,43 € 9 776In Stock	Mfr. Part No. P4SMA16A Mouser Part No 652-P4SMA16A	Bourns	ESD Protection Diodes / TVS Diodes 16V 400W UniDir Learn More about Bourns p4sma diode series	Datasheet	9 776In Stock	Cut Tape 0,43 € 0,20 € 0,153 € 0,135 € Reel 0,105 € 0,08 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 16V 400W BiDir P4SMA16CA Bourns 1: 0,499 € 8 662In Stock	Mfr. Part No. P4SMA16CA Mouser Part No 652-P4SMA16CA	Bourns	ESD Protection Diodes / TVS Diodes 16V 400W BiDir Learn More about Bourns p4sma diode series	Datasheet	8 662In Stock	Cut Tape 0,499 € 0,223 € 0,195 € 0,147 € Reel 0,103 € View 0,134 € 0,124 € 0,09 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 18V 400W UniDir P4SMA18A Bourns 1: 0,516 € 11 480In Stock	Mfr. Part No. P4SMA18A Mouser Part No 652-P4SMA18A	Bourns	ESD Protection Diodes / TVS Diodes 18V 400W UniDir Learn More about Bourns p4sma diode series	Datasheet	11 480In Stock	Cut Tape 0,516 € 0,322 € 0,206 € 0,153 € Reel 0,093 € View 0,124 € 0,11 € 0,091 € 0,076 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 20V 400W UniDir P4SMA20A Bourns 1: 0,447 € 7 368In Stock	Mfr. Part No. P4SMA20A Mouser Part No 652-P4SMA20A	Bourns	ESD Protection Diodes / TVS Diodes 20V 400W UniDir Learn More about Bourns p4sma diode series	Datasheet	7 368In Stock	Cut Tape 0,447 € 0,20 € 0,175 € 0,132 € Reel 0,092 € View 0,115 € 0,109 € 0,08 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 250V 400W UniDir P4SMA250A Bourns 1: 0,559 € 4 590In Stock	Mfr. Part No. P4SMA250A Mouser Part No 652-P4SMA250A	Bourns	ESD Protection Diodes / TVS Diodes 250V 400W UniDir Learn More about Bourns p4sma diode series	Datasheet	4 590In Stock	Cut Tape 0,559 € 0,249 € 0,219 € 0,165 € Reel 0,117 € View 0,144 € 0,102 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 250V 400W BiDir P4SMA250CA Bourns 1: 0,886 € 810In Stock	Mfr. Part No. P4SMA250CA Mouser Part No 652-P4SMA250CA	Bourns	ESD Protection Diodes / TVS Diodes 250V 400W BiDir Learn More about Bourns p4sma diode series	Datasheet	810In Stock	Cut Tape 0,886 € 0,552 € 0,36 € 0,272 € Reel 0,192 € View 0,248 € 0,227 € 0,167 € 0,162 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 27V 400W UniDir P4SMA27A Bourns 1: 0,447 € 4 286In Stock	Mfr. Part No. P4SMA27A Mouser Part No 652-P4SMA27A	Bourns	ESD Protection Diodes / TVS Diodes 27V 400W UniDir Learn More about Bourns p4sma diode series	Datasheet	4 286In Stock	Cut Tape 0,447 € 0,20 € 0,175 € 0,132 € Reel 0,092 € View 0,122 € 0,108 € 0,08 € 0,077 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 30V 400W BiDir P4SMA30CA Bourns 1: 0,499 € 3 093In Stock 10 000Expected 17/11/2026	Mfr. Part No. P4SMA30CA Mouser Part No 652-P4SMA30CA	Bourns	ESD Protection Diodes / TVS Diodes 30V 400W BiDir Learn More about Bourns p4sma diode series	Datasheet	3 093In Stock 10 000Expected 17/11/2026	Cut Tape 0,499 € 0,223 € 0,195 € 0,147 € Reel 0,109 € View 0,145 € 0,127 € 0,095 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 33V 400W UniDir P4SMA33A Bourns 1: 0,473 € 5 871In Stock 15 000Expected 18/01/2027	Mfr. Part No. P4SMA33A Mouser Part No 652-P4SMA33A	Bourns	ESD Protection Diodes / TVS Diodes 33V 400W UniDir Learn More about Bourns p4sma diode series	Datasheet	5 871In Stock 15 000Expected 18/01/2027	Cut Tape 0,473 € 0,212 € 0,186 € 0,139 € Reel 0,075 € View 0,128 € 0,11 € 0,067 € 0,066 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 33V 400W BiDir P4SMA33CA Bourns 1: 0,499 € 1 099In Stock 20 000On Order	Mfr. Part No. P4SMA33CA Mouser Part No 652-P4SMA33CA	Bourns	ESD Protection Diodes / TVS Diodes 33V 400W BiDir Learn More about Bourns p4sma diode series	Datasheet	1 099In Stock 20 000On Order On Order Ship Dates Mfr. No: P4SMA33CA Stock: 1 099 Can Dispatch Immediately On Order: 10 000 Expected 05/03/2027 10 000 Expected 14/09/2027 Factory Lead Time: 22 Weeks	Cut Tape 0,499 € 0,223 € 0,195 € 0,147 € Reel 0,103 € View 0,144 € 0,124 € 0,09 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 350V 400W UniDir P4SMA350A Bourns 1: 0,559 € 5 079In Stock	Mfr. Part No. P4SMA350A Mouser Part No 652-P4SMA350A	Bourns	ESD Protection Diodes / TVS Diodes 350V 400W UniDir Learn More about Bourns p4sma diode series	Datasheet	5 079In Stock	Cut Tape 0,559 € 0,249 € 0,219 € 0,165 € Reel 0,117 € View 0,149 € 0,102 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 36V 400W UniDir P4SMA36A Bourns 1: 0,447 € 4 850In Stock 10 000Expected 05/05/2027	Mfr. Part No. P4SMA36A Mouser Part No 652-P4SMA36A	Bourns	ESD Protection Diodes / TVS Diodes 36V 400W UniDir Learn More about Bourns p4sma diode series	Datasheet	4 850In Stock 10 000Expected 05/05/2027	Cut Tape 0,447 € 0,20 € 0,175 € 0,132 € Reel 0,092 € View 0,124 € 0,108 € 0,077 € 0,076 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 36V 400W BiDir P4SMA36CA Bourns 1: 0,499 € 9 539In Stock	Mfr. Part No. P4SMA36CA Mouser Part No 652-P4SMA36CA	Bourns	ESD Protection Diodes / TVS Diodes 36V 400W BiDir Learn More about Bourns p4sma diode series	Datasheet	9 539In Stock	Cut Tape 0,499 € 0,223 € 0,194 € 0,147 € Reel 0,103 € View 0,144 € 0,124 € 0,089 € 0,081 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 39V 400W BiDir P4SMA39CA Bourns 1: 0,499 € 3 056In Stock 10 000Expected 28/06/2027	Mfr. Part No. P4SMA39CA Mouser Part No 652-P4SMA39CA	Bourns	ESD Protection Diodes / TVS Diodes 39V 400W BiDir Learn More about Bourns p4sma diode series	Datasheet	3 056In Stock 10 000Expected 28/06/2027	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 43V 400W BiDir P4SMA43CA Bourns 1: 0,593 € 7 521In Stock	Mfr. Part No. P4SMA43CA Mouser Part No 652-P4SMA43CA	Bourns	ESD Protection Diodes / TVS Diodes 43V 400W BiDir Learn More about Bourns p4sma diode series	Datasheet	7 521In Stock	Cut Tape 0,593 € 0,372 € 0,237 € 0,177 € Reel 0,108 € View 0,144 € 0,127 € 0,09 € 0,087 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 47V 400W UniDir P4SMA47A Bourns 1: 0,516 € 304In Stock	Mfr. Part No. P4SMA47A Mouser Part No 652-P4SMA47A	Bourns	ESD Protection Diodes / TVS Diodes 47V 400W UniDir Learn More about Bourns p4sma diode series	Datasheet	304In Stock	Cut Tape 0,516 € 0,24 € 0,206 € 0,132 € Reel 0,091 € View 0,124 € 0,108 € 0,077 € 0,075 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 47V 400W BiDir P4SMA47CA Bourns 1: 0,499 € 4 446In Stock 20 000Expected 01/07/2027	Mfr. Part No. P4SMA47CA Mouser Part No 652-P4SMA47CA	Bourns	ESD Protection Diodes / TVS Diodes 47V 400W BiDir Learn More about Bourns p4sma diode series	Datasheet	4 446In Stock 20 000Expected 01/07/2027	Cut Tape 0,499 € 0,223 € 0,195 € 0,147 € Reel 0,103 € View 0,144 € 0,124 € 0,09 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 51V 400W BiDir P4SMA51CA Bourns 1: 0,593 € 6 980In Stock	Mfr. Part No. P4SMA51CA Mouser Part No 652-P4SMA51CA	Bourns	ESD Protection Diodes / TVS Diodes 51V 400W BiDir Learn More about Bourns p4sma diode series	Datasheet	6 980In Stock	Cut Tape 0,593 € 0,372 € 0,237 € 0,177 € Reel 0,108 € View 0,144 € 0,127 € 0,089 € 0,086 € MouseReel Available	Min.: 1 Mult.: 1 : 5 000
ESD Protection Diodes / TVS Diodes 530V 400W UniDir P4SMA530A Bourns 1: 0,757 € 4 055In Stock	Mfr. Part No. P4SMA530A Mouser Part No 652-P4SMA530A	Bourns	ESD Protection Diodes / TVS Diodes 530V 400W UniDir Learn More about Bourns p4sma diode series	Datasheet	4 055In Stock	Cut Tape 0,757 € 0,346 € 0,305 € 0,233 € Reel 0,169 € View 0,227 € 0,208 € 0,149 € 0,145 € 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