Bourns® Gas Discharge Tubes Short Form Brochure Bourns® GDT Product Overview Bourns® GDT Product Features • RoHS compliant* • Wide range of voltages available (75 V to 7200 V) • Wide range of sizes available • Patented hybrid technology designs (MSP® GDT) • Low arc (on-state) voltage • Low capacitance and insertion loss • Non-radioactive materials • Devices are tested according to U.S.A. and International standards and recommendations • Low work function designs that result in long and stable service life • Patented Switch-Grade Fail-Short technology available on some models Introduction Bourns delivers a comprehensive line of circuit protection technologies and solutions. At our engineering centers in Riverside, California and Linkou, Taiwan, we design a full range of overvoltage and overcurrent protection technologies. Bourns offers world-class technology and application expertise that is the result of many years of circuit protection engineering, design and support. Bourns’ global reputation for extensive application knowledge, quality products, innovative protection strategies and a wide range of technologies ensures that we can provide the right circuit protection solution for your needs. Customers across different markets and industries have come to rely on Bourns® Gas Discharge Tube (GDT) Surge Arrestors to protect an ever-increasing variety of electronic equipment. Bourns® GDT technology offers fast response times, low capacitance, long service life and high surge current handling capabilities. Bourns engineers continue to innovate GDT technology by designing ground-breaking GDT designs such as the industry-leading GDT Series with FLAT® technology. 2 Bourns® GDT Benefits • 50+ years of designing and manufacturing GDT devices • Impulse current ratings (2 kA to 100 kA) • Low capacitance and insertion loss • Designs based on industry standards • Switch-Grade Fail-Short technology available on some models • Technical committee participation and leadership • Custom device capabilities • Lab facilities available for design verification of customer circuits as well as with testing capabilities for UL and Telcordia standards Benefits of Partnering with Bourns for your GDT Circuit Protection Needs • Special leadform and voltage screening capabilities • Technical design support • Bourns offers multiple circuit protection components for total design support including Thyristors, Diodes, Multifuse® PPTCs, CPTCs, TBU® High-Speed Protectors, Telefuse™ Telecom Protectors, MOVs and Magnetics. GDT Operation GDT surge arrestor devices are designed to operate on the gas-physical principle of the highly effective arc discharge. Essentially a voltage dependent switch, the GDT maintains a high impedance off-state until a voltage exceeds the device’s sparkover voltage. At this point, the gas in the GDT becomes fully ionized and conduction takes place within a fraction of microsecond. During arc-over, the GDT exhibits the low impedance of a crowbar device resulting in very low on-state voltage (arc voltage). The crowbar effect of the GDT effectively limits the overvoltage to a low level and shunts the associated follow current away from downstream components and circuitry. When the surge event subsides and the system voltage returns to normal levels, the GDT will reset into its high impedance (off) state. Switch-Grade Fail-Short Devices Bourns offers a Switch-Grade Fail-Short mechanism available on selected Bourns® GDTs. • The fail-short contacts are spring-loaded switch-grade electrical conductors with no insulating burn through media or solder pellets under compression. • The fail-short mechanism is activated by a breakaway action, preventing solder residues from freezing the fail-short mechanism and diurnal temperature failures. • Superior thermal coupling between the Switch-Grade Fail-Short device and suppression components allows rapid Fail-Short activation in both vented and non- vented GDTs, with one of the industry’s lowest contact resistance. • Available on Model 2026, 2036 and 2026 MSP® GDTs. GDT Types Bourns offers a broad range of 2-electrode and 3-electrode GDT devices (figures 2 & 3). 2-Electrode devices are typically used to provide line to ground or line to line protection (1 to 2). In a single device, a 3-electrode GDT can provide protection from line to line (1-2) as well as line to ground (1 to 3, 2 to 3) in a single device. Voltage Sparkover Voltage Glow to Arc Transition Glow Region Arc Voltage Time Figure 1 GDT Voltage Breakdown Characteristic Standard GDTs (75 to 600 V) are provided in both 2- and 3-electrode devices. High voltage GDTs (800 to 7200 V) are primarily offered in 2-electrode devices and some select 3-electrode packages. In addition, specialized GDTs are offered in high current, fast acting, hybrid and FLAT® technology versions allowing the customer to address a wider array of protection needs. 1 1 3 2 Figure 2 2-Electrode GDT 2 Figure 3 3-Electrode GDT *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. 3 Bourns® GDT Application Overview RF Input DC Supply 2051-09-SM-RPLF CC453232-1R0KL Figure 4 SMBJ26CA Figure 5 TBU-CA065-200-WH SDI 2031-23T-SM RS-232 Serial Port Surge Protection Figure 6 TBU-CA065-100-WH 2031-23T-SM CDSOD323-T05LC (2035-23-SM) Video Surveillance TBU-CA065-100-WH 75 Ω Coax Composite Video 2031-23T-SM (2017-23-SMC) HV LP Filter 2031-15T-SM IF TX/RX 75 Ω TBU-CA025-300-WH DC or AC Power RS232 Satellite Receiver RF Input Protection for higher power split-mounted infrared feed equipment Figure 7 4 Intelligent Transport System Figure 8 Microwave Link RC To Receiver TCS-DL004-500-WH V+ CD0603-S0180 2036-42-SM-RPLF CDSOT236DSL03xx 10 VCD0603-S0180 TCS-DL004-500-WH 33 nF 1:1.4 RC To Receiver VDSL Driver Figure 9 VDSL Class H Driver Protection for ITU-T K.21 RC To Receiver RV TCS-DL004-500-WH CD0603-S0180 V+ SMAJ24A VDSL Driver VTCS-DL004-500-WH CD143A-SR70 2038-80-SM-RPLF RT CD0603-S0180 1:1.4 RV To Receiver RC Figure 10 VDSL Class H Driver – Fully Resettable GR-1089 ISSUE 6 Solution for Port Types 1, 3, and 5 1 CT : 1 CT 2030-23T-SM-RPLF Not Used Ethernet PHY To Connector 1/4 SM51589L 2030-23T-SM-RPLF TBU-DT065-300-WH Figure 11 Ethernet Surge and Power Cross Protection – GR-1089 ISSUE 6, Port Type 4 5 GDT General Information Quality Systems Bourns® GDTs* are produced in ISO 9001, ISO 14001 and TS16949 certified facilities. Quality and Reliable Monitoring Bourns® GDTs are 100 % production tested to assure compliance of critical product parameters. In addition, GDTs are periodically subjected to ongoing reliability and requalification testing as demanded by our quality system requirements. Quality Sampling Inspections Bourns® GDTs are inspected to AQL 0.65, DIN ISO 2859 specifications. Operating and Storage Conditions Bourns® GDT devices comply with the general operating and storage conditions as detailed in ITU K.12 (-40 ˚C to +85 ˚C) unless otherwise specified in the product series data sheet. Specific GDT series are offered with an extended temperature range for more demanding environments and requirements. 6 * depending on model type Performance by Design Bourns® GDT device designs are based on standard ITU-T K.12, as well as key considerations of RUS-PE80/IEEE C62.31, GR-1361, GR-974, GR-1089, ITU-T K.20/21, IEC61643-311 (EN61643-311), and DIN VDE 0845 part 2. UL Listing Bourns® GDT are UL recognized to one of the following standards: • UL 497B • UL 1449 Information regarding specific products series can be found in the following UL Recognition files: • E153537 • E313168 Regulated Substances Bourns® GDTs with an “LF” designator are RoHS compliant as defined in the Annex to 2002/95/EC. By definition, Bourns® GDTs and Switch-Grade FailShort option with an “LF” suffix are below maximum concentration values (no exemptions used) for: • Lead • Cadmium • Hexavalent Chromium • Mercury and Mercury Compounds • PBBs and PBDEs GDTs with FLAT® Technology 2017-xx-A 2017-xx-SMC 2017-xx-SMH 2-Electrode SMD GDT with FLAT® Technology Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 8x2 90 - 500 10 12 2.5 Capacitance Operating Temperature (pF) Range (˚C) < 2.5 -55 to +85 Packaging Options Tape & Reel Bulk 2-Electrode SMD GDT with FLAT® Technology Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 8x2 90 - 500 10 12 2.5 Capacitance Operating Temperature (pF) Range (˚C) < 2.5 -55 to +85 Packaging Options Tape & Reel Bulk 2-Electrode SMD GDT with FLAT® Technology Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 8x2 90 - 500 10 12 2.5 Capacitance Operating Temperature (pF) Range (˚C) < 2.5 -55 to +85 Packaging Options Tape & Reel Bulk 7 2-Electrode Standard Surface Mount (SMD) GDTs 2051-xx-SM 2053-xx-SM 2035-xx-SM 2055-xx-SM 2027-xx-SM Light Duty Micro Duty GDT - Extended Temperature Range Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 3.2 x 4.5 90 - 600 2 Not Rated Not Rated Capacitance Operating Temperature (pF) Range (˚C) <1 -40 to +125 Packaging Options Tape & Reel Bulk Light Duty Miniature GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 4 x 4.2 75 - 600 3 5 Not Rated Capacitance Operating Temperature (pF) Range (˚C) <1 -30 to +85 Packaging Options Tape & Reel Bulk Long Life Medium Duty Miniature GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 5x4 90 - 600 5 10 1 Capacitance Operating Temperature (pF) Range (˚C) <1 -55 to +85 Packaging Options Tape & Reel Bulk Medium Duty Miniature GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 6.2 x 4.2 90 - 600 5 8 Not Rated Capacitance Operating Temperature (pF) Range (˚C) <1 -30 to +85 Packaging Options Tape & Reel Bulk Long Life Heavy Duty SMD GDT - Extended Temperature Range Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 8x6 75 - 600 10 25 2.5 Capacitance Operating Temperature (pF) Range (˚C) <1 -55 to +125 Packaging Options Tape & Reel Bulk 2029-xx-SMLF Long Life Heavy Duty SMD GDT - Extended Temperature Range 8 Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 8x6 90 - 420 20 25 5 Capacitance Operating Temperature (pF) Range (˚C) <1 -55 to +105 Packaging Options Tape & Reel Bulk 2-Electrode Standard Through-Hole GDTs 2057-xx-XX 2053-xx-SM 2037-xx-XX 2045-xx-XX 2049-xx-XX 2027-xx-XX Medium Duty Through-Hole Micro GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 5.5 x 6 75 - 470 5 10 Not Rated Capacitance Operating Temperature (pF) Range (˚C) <1 -40 to +90 Packaging Options Tape & Reel Bulk Long Life Medium Duty Through-Hole Miniature GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 5x4 90 - 600 5 10 1 Capacitance Operating Temperature (pF) Range (˚C) <1 -55 to +85 Packaging Options Tape & Reel Bulk Long Life Medium Duty Through-Hole Miniature GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 5x5 90 - 600 5 10 1 Capacitance Operating Temperature (pF) Range (˚C) <1 -55 to +85 Packaging Options Tape & Reel Bulk Medium Duty Through-Hole GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 8x6 75 - 470 10 15 Not Rated Capacitance Operating Temperature (pF) Range (˚C) < 1.5 -30 to +85 Packaging Options Tape & Reel Bulk Heavy Duty Through-Hole GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 8x6 75 - 600 15 20 Not Rated Capacitance Operating Temperature (pF) Range (˚C) < 1.5 -30 to +85 Packaging Options Tape & Reel Bulk Long Life Heavy Duty Through-Hole GDT - Extended Temperature Range Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 8x6 75 - 600 10 25 2.5 Capacitance Operating Temperature (pF) Range (˚C) <1 -55 to +125 Packaging Options Tape & Reel Bulk 9 2-Electrode High Voltage GDTs 2087-xxx-SM High Voltage Miniature SMD GDT 2039-xxx-XX Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Operations Maximum 8 x 20 µs Impulse Current (kA) 1 Application 4 x 4.2 800 - 2000 2 3 Capacitance Operating Temperature (pF) Range (˚C) < 0.5 -30 to +85 Packaging Options Tape & Reel Bulk High Voltage Miniature Through-Hole GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Operations Maximum 8 x 20 µs Impulse Current (kA) 1 Application 5x4 800 - 1100 2.5 5 Capacitance Operating Temperature (pF) Range (˚C) <1 -55 to +85 Packaging Options Tape & Reel Bulk 2039-xxx-SM High Voltage Miniature SMD GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Operations Maximum 8 x 20 µs Impulse Current (kA) 1 Application 5 x 4.4 900 - 1100 2.5 5 Capacitance Operating Temperature (pF) Range (˚C) <1 -55 to +85 Packaging Options Tape & Reel Bulk 2093-xxx-SM High Voltage SMD GDT 2095-xxx-XX 2097-xxx-D Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Operations Maximum 8 x 20 µs Impulse Current (kA) 1 Application 6.2 x 4.2 1000 - 3000 3 5 Capacitance Operating Temperature (pF) Range (˚C) < 0.8 -30 to +85 Packaging Options Tape & Reel Bulk High Voltage Through-Hole GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Operations Maximum 8 x 20 µs Impulse Current (kA) 1 Application 8x8 800 - 6000 5/3 8/5 Capacitance Operating Temperature (pF) Range (˚C) < 1.5 -30 to +90 Packaging Options Tape & Reel Bulk Heavy Duty High Voltage Through-Hole GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Operations Maximum 8 x 20 µs Impulse Current (kA) 1 Application 11.8 x 17.5 1000 - 2200 20 5 Operations 25 Capacitance Operating Temperature (pF) Range (˚C) <1 -30 to +85 Packaging Options Bulk SA2-xxxx-xxx-STD High Voltage Through-Hole GDT - Extended Temperature Range 10 Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Operations Maximum 8 x 20 µs Impulse Current (kA) 1 Application 8.5 x 8.9 2000 - 7200 5 10 Capacitance Operating Temperature (pF) Range (˚C) <1 -40 to +125 Packaging Options Tape & Reel Bulk 2-Electrode High Current GDTs 2047-xx-XX 2061-xx-A 2063-xx-A Long Life High Current Heavy Duty GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 12.7 x 12.7 90 - 350 40 10 Operations 40 8 Capacitance Operating Temperature (pF) Range (˚C) <5 -40 to +90 Packaging Options Bulk High Current Heavy Duty 2-Electrode GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 11.8 x 12 230 - 800 40 5 Operations 60 Not Rated Capacitance Operating Temperature (pF) Range (˚C) < 10 -30 to +85 Packaging Options Bulk High Current Heavy Duty 2-Electrode GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) Maximum 8 x 20 µs Impulse Current (kA) 1 Application Maximum 10 x 350 µs Impulse Current (kA) 1 Application 11.8 x 17 230 - 800 60 5 Operations 100 Not Rated Capacitance Operating Temperature (pF) Range (˚C) < 10 -30 to +85 Packaging Options Bulk 11 3-Electrode Standard SMD GDTs 2052-xx-SM 2054-xx-SM 2038-xx-SM 2036-xx-SM Light Duty Symmetrical Miniature SMD GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications* Maximum 8 x 20 µs Impulse Current (kA) 1 Application* Maximum 10 x 350 µs Impulse Current (kA) 1 Application* 5 x 7.2 230 - 600 5 10 Not Rated Capacitance Operating Temperature (pF) Range (˚C) <2 -30 to +85 Packaging Options Tape & Reel Bulk Light Duty Miniature SMD GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications* Maximum 8 x 20 µs Impulse Current (kA) 1 Application* Maximum 10 x 350 µs Impulse Current (kA) 1 Application* 5 x 7.2 230 - 470 5 Not Rated Not Rated Capacitance Operating Temperature (pF) Range (˚C) <2 -30 to +85 Packaging Options Tape & Reel Bulk Long Life Light Duty Symmetrical Miniature SMD GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications* Maximum 8 x 20 µs Impulse Current (kA) 1 Application* Maximum 10 x 350 µs Impulse Current (kA) 1 Application* 5 x 7.5 150 - 600 5 10 Not Rated Capacitance Operating Temperature (pF) Range (˚C) <1 -40 to +90 Packaging Options Tape & Reel Bulk Long Life Medium Duty Miniature SMD GDT - Extended Temperature Range Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications* Maximum 8 x 20 µs Impulse Current (kA) 1 Application* Maximum 10 x 350 µs Impulse Current (kA) 1 Application* 5 x 7.3 75 - 600 10 20 2 Capacitance Operating Temperature (pF) Range (˚C) <2 -55 to +105 Packaging Options Tape & Reel Bulk *The rated current is the total current equally divided between each line to ground (ELTG). 3-Electrode High Voltage SMD GDTs 2052-xx-SM 2038-xx-SM 12 High Voltage Symmetrical Miniature SMD GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications* Maximum 8 x 20 µs Impulse Current (kA) 1 Application* Maximum 10 x 350 µs Impulse Current (kA) 1 Application* 5 x 7.2 800 5 10 Not Rated Capacitance Operating Temperature (pF) Range (˚C) <2 -30 to +85 Packaging Options Tape & Reel High Voltage Symmetrical Miniature SMD GDT Size (mm) DC Breakdown Range (V) Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications* Maximum 8 x 20 µs Impulse Current (kA) 1 Application* Maximum 10 x 350 µs Impulse Current (kA) 1 Application* 5 x 7.5 800, 1100 5 10 Not Rated Capacitance Operating Temperature (pF) Range (˚C) <1 -40 to +90 Packaging Options Tape & Reel Bulk 3-Electrode Standard Through-Hole GDTs 2056-xx-XX Light Duty Through-Hole GDT Size (mm) 6x8 2046-xx-XX 8 x 10 2028-xx-XX 2026-xx-XX Yes 90 - 600 Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications* 5 Max. 8 x 20 µs Max. 10 x 350 µs Capacitance Operating Packaging Impulse Impulse Temperature Options Current (kA) Current (kA) (pF) Range (˚C) 1 Application* 1 Application* Not Rated Not Rated <2 -30 to +85 Bulk Medium Duty Through-Hole GDT Size (mm) 2036-xx-XX DC Optional Breakdown Fail-Short Range (V) DC Optional Fail-Short Breakdown Range (V) Yes 90 - 600 Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications* 10 Max. 8 x 20 µs Max. 10 x 350 µs Capacitance Operating Packaging Impulse Impulse Temperature Options Current (kA) Current (kA) (pF) Range (˚C) 1 Application* 1 Application* 20 Not Rated <2 -30 to +85 Bulk Long Life Medium Duty Miniature Through-Hole GDT - Extended Temperature Range Size (mm) DC Optional Breakdown Fail-Short Range (V) 5 x 7.5 Yes Switch-Grade 75 - 600 Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications* 10 Max. 8 x 20 µs Max. 10 x 350 µs Capacitance Operating Packaging Impulse Impulse Temperature Options Current (kA) Current (kA) (pF) Range (˚C) 1 Application* 1 Application* 20 2 <2 -55 to +105 Bulk Long Life Heavy Duty Through-Hole GDT Size (mm) DC Optional Fail-Short Breakdown Range (V) 8 x 10 Yes Switch-Grade 230 - 420 expanded range Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications* 20 Max. 8 x 20 µs Max. 10 x 350 µs Capacitance Operating Packaging Impulse Impulse Temperature Options Current (kA) Current (kA) (pF) Range (˚C) 1 Application* 1 Application* 30 5 <2 -55 to +85 Bulk Long Life Heavy Duty Through-Hole GDT Size (mm) DC Optional Breakdown Fail-Short Range (V) 8 x 11.2 Yes Switch-Grade 75 - 600 Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications* 20 Max. 8 x 20 µs Max. 10 x 350 µs Capacitance Operating Packaging Impulse Impulse Temperature Options Current (kA) Current (kA) (pF) Range (˚C) 1 Application* 1 Application* 40 5 <2 -40 to +90 Bulk 2026-xx-XX-MSP Heavy Duty Multi-Stage Through-Hole GDT Size (mm) DC Optional Breakdown Fail-Short Range (V) 8 x 14 Yes Switch-Grade 300 - 400 Nominal 8/20 µs Impulse Discharge Current (kA) 10 Applications* 20 Max. 8 x 20 µs Max. 10 x 350 µs Capacitance Operating Packaging Impulse Impulse Temperature Options Current (kA) Current (kA) (pF) Range (˚C) 1 Application* 1 Application* 40 *The rated current is the total current equally divided between each line to ground (ELTG). 5 < 20 -55 to +85 Bulk 13 2-Electrode & 3-Electrode Fast Acting GDTs T-Series Fast Acting GDT Devices T -Series Fast Acting GDT Advantages Bourns has developed a line of fast acting GDTs designed specifically for use with the Bourns® TBU® High-Speed Protector (HSP). The T-Series GDTs are designed to limit high-speed impulse voltages to levels below the TBU® HSP peak voltage impulse rating (Vimp). Voltages exceeding the TBU® HSP Vimp rating may cause damage to the TBU® HSP. • Designed specifically for the TBU® HSP • Simplifies designing with the TBU® HSP • Extremely fast overvoltage protection limiting surges below the Vimp of the TBU® HSP • Low capacitance, making it ideal for high-speed applications • 2-electrode and 3-electrode designs available • Optional Switch-Grade Fail-Short available for Model 2030-xxT-SM The T-Series GDT and TBU® HSP provide an extremely fast, low voltage let-through protection solution that is well-suited to sensitive electronics susceptible to damage from voltage and current transients. 2020-xxT 2030-xxT-SM Fast Acting 3-Electrode Miniature Through-Hole T-Series GDT Size (mm) Optional Fail-Short Min. DC Breakdown Range (V) Max. 8 x 20 µs Impulse Current (kA) 1 Application* Capacitance (pF) Operating Temperature Range (˚C) Packaging Options 8 x 13.5 No 60 - 360 10 <1 -40 to +90 Bulk Fast Acting 3-Electrode Miniature T-Series SMD GDT - with optional Fail-Short Size (mm) Optional Fail-Short Min. DC Breakdown Range (V) Max. 8 x 20 µs Impulse Current (kA) 1 Application* Capacitance (pF) Operating Temperature Range (˚C) Packaging Options 5 x 7.3 Yes 185, 360 4 <1 -40 to +90 Tape & Reel Bulk 2031-xxT-SM Fast Acting 2-Electrode Miniature T-Series SMD GDT 14 Size (mm) Optional Fail-Short Min. DC Breakdown Range (V) Max. 8 x 20 µs Impulse Current (kA) 1 Application* Capacitance (pF) Operating Temperature Range (˚C) Packaging Options 5 x 4.4 No 60 - 360 1 <1 -40 to +90 Tape & Reel Bulk * End of life value for DC breakdown. Fresh devices will have significantly higher DC breakdown when measured. GDTs in Evaluation Boards This evaluation board serves as an aid in evaluating circuit protection on RS-485 serial device ports using two Bourns® TBU® High-Speed Protectors (HSPs), two fast acting GDTs and two TVS diodes to meet the required industry standards on RS-485 port interfaces. The recommended Bourns® TBU® HSP solution with a low capacitance GDT offers enhanced high-speed performance features over competing technologies, which can help the design engineer increase the surge and transient protection level on RS-485 ports and place the entire circuit protection solution into a smaller reduced PCB area. Bourns has developed an RS-485 evaluation board (measuring 45 mm x 21 mm x 1.2 mm), manufactured using FR4 PCB with nickel gold plating on the top and bottom sides. RS-485 Evaluation Board Top Side Layout** TBU® HSP 1 1 1 2 1 1 IN1 GDT1 2 1 ** The default configuration of this board uses 2 GDTs (GDT1, GDT2) and discrete SMB TVS diodes 1 (TVS1,TVS2). The board allows different configurations: IN2 •2 single 2031 GDTs (GDT1 and GDT2) may be replaced by a 2030 GDT (GDT3). •2 SMB TVS diodes (TVS1 and TVS2) may be replaced with a) two SOT23 TVS diodes (TVS3, Figure TVS4) or b) a single TVS diode array (TVS5). 1 GDT2 1 2 3 1 2 2 1 GND 1 OUT2 2 3 TVS2 1 OUT1 TVS5 3 2 2 1 TVS3 2 GDT3 3 2 GND TVS1 1 1 1 TVS4 TBU® HSP 2 12 RS-485 Evaluation Board Schematic Applications Port Protection 2020 Series GDT Part Number 2030 Series GDT Part Number 2031 Series GDT Part Number TBU® HSP Part Number CANbus 2020-23T-xxxLF 2030-23T-SM-RPLF 2031-23T-SM-RPLF TBU-CA065-100-WH RS-232 2020-23T-xxxLF 2030-23T-SM-RPLF 2031-23T-SM-RPLF TBU-CA065-200-WH RS-422 2020-23T-xxxLF 2030-23T-SM-RPLF 2031-23T-SM-RPLF TBU-CA065-200-WH RS-485 2020-23T-xxxLF 2030-23T-SM-RPLF 2031-23T-SM-RPLF TBU-CA065-200-WH SDI 2020-23T-xxxLF 2030-23T-SM-RPLF 2031-23T-SM-RPLF TBU-CA065-100-WH VDSL 2020-15T-xxxLF 2030-15T-SM-RPLF 2031-15T-SM-RPLF TBU-CA050-500-WH See data sheet for lead form options. 15 Worldwide Sales Offices Country/RegionPhone Email Americas: Brazil: China: Europe, Middle East, Africa: Japan: Korea: Singapore: Taiwan: [email protected] +55 11 5505 0601 [email protected] +86 21 64821250 [email protected] +36 88 520 390 [email protected] +81 49 269 3204 [email protected] +82 70 4036 7730 [email protected] +65 6348 7227 [email protected] +886 2 25624117 [email protected] Other Asia-Pacific Countries: +886 2 25624117 [email protected] Technical Assistance RegionPhone Email Asia-Pacific: Europe, Middle East, Africa: Americas: +886 2 25624117 [email protected] +36 88 520 390 [email protected] [email protected] www.bourns.com Bourns® products are available through an extensive network of manufacturer’s representatives, agents and distributors. To obtain technical applications assistance, a quotation, or to place an order, contact a Bourns representative in your area. Specifications subject to change without notice. Actual performance in specific customer applications may differ due to the influence of other variables. Customers should verify actual device performance in their specific applications. “Bourns”, “TBU” and “MSP” are registered trademarks of Bourns, Inc. in the U.S. and other countries. COPYRIGHT© 2016, BOURNS, INC. • LITHO IN U.S.A. • PSG • 05/16 • 3M/GDT1607