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63 gas discharge tubes 10 te circuit protections gdts (gas discharge tubes) are placed in front of, and in parallel with, sensitive telecom equipment such as power lines, communication lines, signal lines and data transmission lines to help protect them from damage caused by transient surge voltages that may result from lightning strikes and equipment switching operations. these devices do not influence the signal in normal operation. however, in the event of an overvoltage surge, such as a lightning strike, the gdt switches to a low impedance state and diverts the energy away from the sensitive equipment. our gdts offer a high level of surge protection, a broad voltage range, low capacitance, and many form factors including new surface mount devices, which makes them suitable for applications such as mdf (main distribution frame) modules, high data-rate telecom applications (e.g. adsl, vdsl), and surge protection on power lines. their low capacitance also results in less signal distortion. when used in a coordinated circuit protection solution with polyswitch devices, they can help equipment manufacturers meet stringent safety regulatory standards. ? helps provide overvoltage fault protection against damage caused by high energy surges ? suitable for use in sensitive equipment due to impulse sparkover response ? suitable for high-frequency applications ? highly reliable performance ? new surface-mount devices for automated manufacturing ? rohs compliant ? halogen free (refers to: br 900ppm, cl 900ppm, br+cl 1500ppm) ? wide range of voltages (75v-4000v) ? wide range of form factors (3mm, 5mm, 6mm, 7mm, 8mm diameter devices) ? low capacitance and insertion loss ? crowbar device with low arc voltage ? high accuracy spark-over voltages for high precision designs ? devices tested per itu k.12 recommendations ? various lead configurations and surface-mount options ? optional fail-short mechanism ? non radioactive materials ? devices certified to ul497b and ul1449 ? telecommunications - mdf modules, xdsl equipment, rf systems, antenna, base stations benefits features applications ? industrial and consumer electronics - power supplies, surge protectors, alarm systems, irrigation systems gas discharge tubes
64 rohs compliant, elv compliant hf halogen free 10 table g1 device voltage ratings, surge rating, capacitance, insulation resistance, and agency approval for two electrode gas discharge tubes part number dc sparkover voltage impulse sparkover voltage impulse discharge current impulse withstanding voltage capacitance insulation resistance ul rating @ 100v/s 20% tolerance @ 1kv/s 8x20s 10 hits (5 hits each polarity) 8x20s 300 hits (150 hits each polarity) 10/700s 10 hits (5 times each polarity) @1mhz @100v dc ? ul497b #e179610 gtcs23-xxxm-r01-2 75* 90 140 150 200 230 300 350 400 600 600 600 600 700 700 900 1000 1000 1ka 100a 4kv <0.5pf 1,000 (m ?) all devices gtcc23-xxxm-r01-2 1ka 100a 6kv ? <0.5pf 1,000 (m ?) all devices * dcso 60~105 ? devices <=150v measured @ 50v dc ? effective output impedance: 40ohms part number dc sparkover voltage impulse sparkover voltage dc holdover voltage on-state voltage impulse discharge current impulse life ac discharge current (1sec duration; 10 hits) capacitance insulation resistance ul rating @ 100v/s 20% tolerance @ 100v/s @ 1kv/s per itu k.12 nominal (@1a) (v) 8x20s 10 hits 10x1000s 300 hits @ 50 hz @ 1mhz @ 100v dc ul497b #e179610 gtcx25-xxxm-r02 75 90 140 150 200 230 250 260 300 350 400 420 470 500 550 600 450 450 500 500 600 600 600 700 800 900 900 900 1050 1100 1300 1300 550 550 600 600 700 700 700 800 900 1000 1000 1000 1150 1200 1400 1400 <52 <52 <80 <80 <135 <135 <135 <135 <150 <150 <150 <150 <150 <150 <150 <150 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 2.5ka 100a 2.5arms <1pf 10,000 (m ? ) all devices gtcx26-xxxm-r05 5ka 100a 5arms <1pf 10,000 (m ? ) all devices gtcx28-xxxm-r05 5ka 100a 5arms <1pf 10,000 (m ? ) all devices gtcx28-xxxm-r10 10ka 100a 10arms <1pf ?? 10,000 (m ? ) all devices gtcx28-xxxm-r20** 20ka 100a 20arms <1.5pf 10,000 (m ? ) all devices ** gtcx28-xxxm-r20 parts only up to 350v ?? <1.2pf for 75v and 90v devices. figure g1-g2 typical circuits for gas discharge tubes polyswitch device telecom line (a) (a) (b) (b) protected equipment thyristor gdt two electrode devices for ungrounded circuits figure g1 polyswitch device polyswitch device (a) (a) (b) (b) thyristors protected equipment gdt telecom line three electrode devices for grounded circuits figure g2
65 gas discharge tubes rohs compliant, elv compliant hf halogen free 10 part number dc sparkover voltage (a-e) (b-e) impulse sparkover voltage (a-e) (b-e) dc holdover voltage on-state voltage impulse discharge current (a+b-e) impulse life (a+b-e) ac discharge current (1sec duration; 10 hits) (a+b-e) capacitance insulation resistance ul rating @ 100v/s 20% tolerance @ 100v/s @ 1kv/s per itu k.12 nominal (@1a) (v) 8x20s 10 hits 10x1000s 300 hits @ 50 hz @ 1mhz @ 100v dc * ul497b #e179610 gtcx35-xxxm-r05 75 90 140 150 200 230 250 260 300 350 400 420 470 500 550 600 450 450 500 500 600 600 600 700 800 900 900 900 1050 1100 1300 1300 550 550 600 600 700 700 700 800 900 1000 1000 1000 1150 1200 1400 1400 <52 <52 <80 <80 <135 <135 <135 <135 <150 <150 <150 <150 <150 <150 <150 <150 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 5ka 100a 5arms <1pf 10,000 (m ? ) all devices gtcx36-xxxm-r05 5ka 200a 5arms <1pf 10,000 (m ? ) all devices gtcx36-xxxm-r10 10ka 200a 10arms <1pf 10,000 (m ? ) all devices gtcx37-xxxm-r10 10ka 200a 10arms <1pf 10,000 (m ? ) all devices gtcx38-xxxm-r10 10ka 200a 10arms <1pf 10,000 (m ? ) all devices * insulation resistance measured at 50v for devices less than 150v. insulation resistance measured at 250v for devices more than 500v. table g2 device voltage ratings, surge rating, capacitance, insulation resistance, and agency approval for two electrode high voltage gas discharge tubes part number dc sparkover voltage impulse sparkover voltage impulse life ac discharge current, 50 hz impulse discharge current 8/20s capacitance ul rating @100v/s 20% tolerance @ 100 v/s 10/1000s 100a multiple hits (1s duration: 10 hits) single hit, 9 cycles 10 hits (5 hits each polarity) 1 hit @ 1mhz ul1449 #e332226 gtca28-801m-r05 800 1400 300 times 5a n/a 5ka n/a <1pf gtca28-102m-r03 1000 1700 n/a 1a 5a 3ka 10ka <1pf gtca28-122m-r03 1200 1900 n/a 1a 5a 3ka 10ka <1pf gtca28-152l-r03 1500 ( 15%) 2200 n/a 1a 5a 3ka 10ka <1pf gtca28-212m-r03 2100 2700 n/a 1a 5a 3ka 10ka <1pf gtca28-242m-r03 2400 3300 n/a 1a 5a 3ka 10ka <1pf gtca28-252m-r03 2500 3500 n/a 1a 5a 3ka 10ka <1pf gtca28-272l-r03 2700 ( 15%)* 3700 300 times ? n/a n/a 3ka 10ka <1pf gtca28-302m-r03 3000 4000 n/a 1a 5a 3ka 10ka <1pf gtca28-312l-r03 3100 ( 15%)* 3700 ? 300 times ? n/a n/a 3ka 10ka <1pf gtca28-362m-r03 3600 4600 n/a 1a 5a 3ka 10ka <1pf gtca28-402m-r03 4000 5000 n/a 1a 5a 3ka 10ka <1pf note: insulation resistance: 10,000m ? (all parts measured @ 1000v dc , except 800v/1000v/1200v @250v dc ; 1500v/2100v @ 500v dc ) * dc sparkover voltage measured at 5kv/s ? measured with 8/20s,100a impulse ? measured at 1000v/us table g3 device voltage ratings, surge rating, capacitance, insulation resistance, and agency approval for three electrode gas discharge tubes
66 rohs compliant, elv compliant hf halogen free 10 ?3.0 4.5 0.2 3.0 0.2 3.0 0.2 1.0 1.0 surface-mount (gtcs23-xxxm-r01) z1 x z2 y pad layout - surface-mount devices (gtcs23-xxxm-r01) xy z1 z2 nom. nom. nom. nom. mm 3.0 2.0 2.0 2.0 in* (0.118) (0.079) (0.079) (0.079) * the dimensions in inches are rounded approximations. 4.4 0.2 (0.173 0.008) 0.5 (0.020)ref 5.0 0.2 (0.197 0.008) 5 5.0 0.2 (0.197 0.008) surface-mount (gtcs25-xxxm-r02) x z y 5.0 0.2 (0.197 0.008) 5 5.00 0.15 (0.197 0.006) no leads (gtcn25-xxxm-r02) ? 5.0 0.2 (0.197 0.008) 60.0 4.0 (2.364 0.158) 5 5.00 0.15 (0.197 0.006) ?0.8 (0.032)ref axial leads (gtca25-xxxm-r02) pad layout - surface-mount devices (gtcs25-xxxm-r02) xyz nom. nom. nom. mm 6.0 3.9 1.3 in* (0.197) (0.154) (0.051) * the dimensions in inches are rounded approximations. ? parts with no leads are not solderable and are meant for insertion into magazine clips. figure g3-g11 dimensions for gas discharge tubes figure g3 two electrode 3mm product dimensions 3.2 0.2 2.7 0.2 4.5 0.3 0.5 0.5 chip gdt (gtcc23-xxxm-r01) z1 x z2 y pad layout - chip gdt devices (gtcc23-xxxm-r01) x y z1 z2 nom. nom. nom. nom. mm 3.5 2.7 2.0 2.0 in* (0.138) (0.106) (0.079) (0.079) * the dimensions in inches are rounded approximations. figure g4 two electrode 5mm product dimensions
67 gas discharge tubes rohs compliant, elv compliant hf halogen free 10 4.2 0.2 (0.165 0.008) 6.2 0.2 (0.244 0.008) 4 6.2 0.2 (0.244 0.008) ?6.0 0.2 (0.236 0.008) 0.6 (0.024)ref x surface-mount (gtcs26-xxxm-r05) pad layout - surface-mount devices (gtcs26-xxxm-r05) x yz nom. nom. nom. mm 7.0 3.7 1.3 in* (0.276) (0.146) (0.051) x z y 4.2 0.2 (0.165 0.008) 4 ?6.0 0.2 (0.236 0.008) no leads (gtcn26-xxxm-r05) ? 4.2 0.2 (0.165 0.008) 62.0 2.0 (2.441 0.079) ?6.0 0.2 (0.236 0.008) ?0.8 (0.032)ref axial leads (gtca26-xxxm-r05) * the dimensions in inches are rounded approximations. ? parts with no leads are not solderable and are meant for insertion into magazine clips. figure g3-g11 dimensions for gas discharge tubes contd figure g5 two electrode 6mm product dimensions figure g6 two electrode 8mm product dimensions 6.0 0.2 (0.236 0.008) 8.2 0.2 (0.323 0.008) 6 8.2 0.2 (0.323 0.008) ?8.0 0.2 (0.315 0.008) 0.5 (0.02)ref 6.0 0.2 (0.236 0.008) 6 ?8.0 0.2 (0.315 0.008) 0.5 (0.02)ref 6.0 0.2 (0.236 0.008) 62.0 4.0 (2.441 0.157) 8 ?8.0 0.2 (0.315 0.008) ?0.8 (0.032)ref surface-mount (gtcs28-xxxm-r05, r10 & r20) no leads (gtcn28-xxxm-r05, r10 & r20) ? axial leads (gtca28-xxxm-r05, r10 & r20) pad layout - surface-mount devices (gtcs28-xxxm-r05, r10 & r20) xyz nom. nom. nom. mm 9.0 5.6 1.2 in* (0.354) (0.22) (0.047) x z y * the dimensions in inches are rounded approximations. ? parts with no leads are not solderable and are meant for insertion into magazine clips. figure g7 two electrode 8mm high voltage product dimensions 6 0.2 62 4 ?8 0.2 ?0.8 axial leads (gtca28-xxxm-r0x)
68 rohs compliant, elv compliant hf halogen free 10 3.8 0.3 (0.151 0.01 2) 8.3 0.3 (0.327 0.01 2) 7. 6 0.2 (0.299 0.008) ?0.8 (0.032) ?5.0 0.2 (0.197 0.008) m 13.0 0.5 (0.512 0.020) ? 4.5 (0.177) ref 4 11 .4 C.0 ( 0.449 C.079 ) +0.0 +0 .000 1 axial leaded with-ft (gtca35-xxxm-r05-ft) 7. 6 0.2 (0.299 0.008) 7 3.8 0.3 (0.151 0.01 2) ?0.8 (0.032) ?5.0 0.2 (0.197 0.008) ? 12.0 0.5 (0.473 0.020) 4 4.5 (0.177) ref 11.4 C.0 ( 0.449 C.079 ) +0.0 +0 .000 axial leaded (gtca35-xxxm-r05) 7. 6 0.2 (0.299 0.008) ? max 5.9 (0.232) m ?5.0 0.2 (0.197 0.008) 8.3 0.3 (0.327 0.01 2) no leads with-ft (gtcn35-xxxm-r05-ft) ? 7. 6 0.2 (0.299 0.008) ?0.8 (0.032) ?5.0 0.2 (0.197 0.008) ? 3x 30.0 2.0 (1.182 0.079) 8 t leaded (gtct35-xxxm-r05) pad layout - surface-mount devices (gtcs35-xxxm-r05) x y1 y2 z1 z2 nom. nom. nom. nom. nom. mm 6.0 3.6 3.6 2.5 1.3 in* (0.236) (0.142) (0.142) (0.098) (0.051) x z1 z2 y1 y2 ? surface-mount (gtcs35-xxxm-r05) 7. 6 0.2 (0.299 0.008) 0.4 (0.01 6) ref 1. 6 (0.063)ref ? ?5.0 0.2 (0.197 0.008) ?5.0 0.2 (0.197 0.008) 1 no leads (gtcn35-xxxm-r05) ? 7. 6 0.2 (0.299 0.008) 7 ?5.0 0.2 (0.197 0.008) 3 * the dimensions in inches are rounded approximations. ? parts with no leads are not solderable and are meant for insertion into magazine clips. figure g3-g11 dimensions for gas discharge tubes contd figure g8 three electrode 5mm product dimensions
69 gas discharge tubes rohs compliant, elv compliant hf halogen free 10 8.2 0.3 (0.323 0.012) 4.7 0.5 (0.185 0.020) 4 ?0.8 (0.032) ref ?6.0 0.2 (0.236 0.008) 13.0 0.5 (0.512 0.020) m 8.0 0.2 (0.315 0.008) axial leaded with-ft (gtca36-xxxm-r05 & r10-ft) pad layout - surface-mount devices (gtcs36-xxxm-r05 & r10) x z1 z2 y1 y2 ? 4.7 0.5 (0.185 0.020) 3 ?0.8 (0.032) ref 12.3 0.5 (0.485 0.020) 8 8.0 0.2 (0.315 0.008) ?6.0 0.2 (0.236 0.008) ? axial leaded (gtca36-xxxm-r05 & r10) 8.2 0.3 (0.323 0.012) 9.2 0.2 (0.362 0.008) 4 3.8 0.3 (0.150 0. 012) ? ?0.8 (0.032) ref max 7. 0 (0.276) 8.0 0.5 (0.315 0.020) ?6.0 0.2 (0.236 0.008) 8 radial leaded with-ft (gtcr36-xxxm-r05 & r10-ft) ?6.0 0.2 (0.236 0.008) 6 9.2 0.2 (0.362 0.008) 14.0 0.5 (0.552 0.020) 3.8 0.3 (0.150 0. 012) ?0.8 (0.032) ref radial leaded (gtcr36-xxxm-r05 & r10) 8.2 0.3 (0.323 0.01 2) max 7. 0 (0.276) 8.0 0.2 (0.315 0.008) ?6.0 0.2 (0.236 0.008) 1 no leads with-ft (gtcn36-xxxm-r05 & r10-ft) ? 0.75 (0.030) ref 8.0 0.2 (0.315 0.008) ?6.0 0.2 (0.236 0.008) 9 no leads (gtcn36-xxxm-r05 & r10) ? 6.0 0.2 (0.236 0.008) ?6.0 0.2 (0.236 0.008) 6.0 0.2 (0.236 0.008) ? 8.2 0.2 (0.323 0.008) 1. 0 (0.039) ref 1. 2 (0.047) ref surface-mount (gtcs36-xxxm-r05 & r10) x y1 y2 z1 z2 nom. nom. nom. nom. nom. mm 7.0 3.6 3.6 2.5 2.0 in* (0.276) (0.142) (0.142) (0.098) (0.079) * the dimensions in inches are rounded approximations. ? parts with no leads are not solderable and are meant for insertion into magazine clips. 11. 5 0.5 (0.453 0.020) 4.4 0.3 (0.173 0. 012) 4 ?1.0 (0.039) ref ?7.5 0.2 (0.296 0.008) 7 7. 0 0.5 (0.276 0.020) radial leaded (gtcr37-xxxm-r10) 11. 5 0.5 (0.453 0.020) 1 ? 7. 5 0.2 (0.296 0.008) 4 4.4 0.3 (0.173 0. 012) ? ?1.0 (0.039) ref ? 7.0 0.5 (0.276 0.020) 7 radial leaded with-fs (gtcr37-xxxm-r10-fs2) 11. 5 0.5 (0.453 0.020) ? ?7.5 0.2 (0.296 0.008) 2.0 (0.079) 1. 5 (0.059) no leads (gtcn37-xxxm-r10) ? figure g3-g11 dimensions for gas discharge tubes contd figure g9 three electrode 6mm product dimensions figure g10 three electrode 7mm product dimensions ? parts with no leads are not solderable and are meant for insertion into magazine clips.
70 rohs compliant, elv compliant hf halogen free 10 10.3 0.3 (0.406 0.012) ? 8.0 0.2 (0.315 0.008) 4.4 0.3 (0.173 0.012) ?1.0 (0.039) ref 15.5 C.5 (0.611 C.059 ) +0 +0.000 13.4 C.0 ( 0.528 C.079 ) +0.0 +0.000 4.5 C ( 0.177 C.000 ) +1.5 +0.059 axial leaded with-ft (gtca38-xxxm-r10-ft) pad layout - surface-mount devices (gtcs38-xxxm-r10) x z1 z2 y1 y2 4.4 0.3 (0.173 0.012) ?1.0 (0.039) ref 8.0 0.2 (0.315 0.008) 4.5 C ( 0.177 C.000 ) +1.5 +0.059 15.0 0.5 (0.591 0.020) 13.4 C.0 ( 0.528 C.079 ) +0.0 +0.000 axial leaded (gtca38-xxxm-r10) 10.0 0.3 (0.394 0.012) 8.0 0.2 (0.315 0.008) ? 8.0 0.2 (0.315 0.008) 0.5 (0.020) 1.5 (0.059) surface-mount (gtcs38-xxxm-r10) 10.3 0.3 (0.406 0.012) max 9.2 (0.362) 10.0 0.3 (0.394 0.012) 3.0 (0.118) 8.0 0.2 (0.315 0.008) no leads with-ft (gtcn38-xxxm-r10-ft) ? 10.0 0.2 (0.394 0.008) ? 7.2 0.2 (0.284 0.008) 8.0 0.2 (0.315 0.008) 7 0.5 (0.020) 1.5 (0.059) no leads (gtcn38-xxxm-r10) ? max 10.8 (0.425) 4.4 0.3 (0.173 0.012) ?1.0 (0.039) ref 15.5 0.5 (0.610 0.020) ? 8.0 0.2 (0.315 0.008) 13.4 C.0 ( 0.528 C.079 ) +0.0 +0.000 4.5 C ( 0.177 C.000 ) +1.5 +0.059 axial leaded with-fs (gtca38-xxxm-r10-fs2) 18.0 0.5 (0.709 0.020) max 13.5 (0.489) 4.4 0.3 (0.173 0.012) ?1.0 (0.039) ref ? 8.0 0.2 (0.315 0.008) 13.4 C.0 ( 0.528 C.079 ) +0.0 +0.000 4.5 C ( 0.177 C.000 ) +1.5 +0.059 axial leaded with-fs (gtca38-xxxm-r10-fs) 7. 0 0.5 (0.276 0.020) 4.4 0.3 (0.173 0.012) ?1.0 (0.039) ref ? 7.5 0.2 (0.296 0.008) 10.0 0.3 (0.394 0.012) max 16.0 (0.630) radial leaded with-ft (gtcr38-xxxm-r10-ft) 7. 0 0.5 (0.276 0.020) 4.4 0.3 (0.173 0.012) ?1.0 (0.039) ref ? 10.0 0.3 (0.394 0.012) ? 7.5 0.2 (0.296 0.008) radial leaded with-fs (gtcr38-xxxm-r10-fs2) 7. 0 0.5 (0.276 0.020) 4.4 0.3 (0.173 0.012) ?1.0 (0.039) ref 10.0 0.3 (0.394 0.012) max 17.5 (0.689) ? 7.5 0.2 (0.296 0.008) radial leaded with-fs (gtcr38-xxxm-r10-fs) 7. 0 0.5 (0.276 0.020) 4.4 0.3 (0.173 0.012) ?1.0 (0.039) ref 10.0 0.3 (0.394 0.012) ? 7.5 0.2 (0.296 0.008) radial leaded (gtcr38-xxxm-r10) x y1 y2 z1 z2 nom. nom. nom. nom. nom. mm 9.0 4.65 4.65 2.5 1.5 in* (0.354) (0.183) (0.183) (0.098) (0.059) * the dimensions in inches are rounded approximations. ? parts with no leads are not solderable and are meant for insertion into magazine clips. figure g3-g11 dimensions for gas discharge tubes contd figure g11 three electrode 8mm product dimensions
71 fail-short mechanism for gas discharge tubes gas discharge tubes fail-short mechanism (fs) operation temperature range storage temperature range models without fail-short mechanism : -40c/+90c models without fail-short mechanism : -40c/+90c models with fail-short mechanism : -20c/+65c models with fail-short mechanism : -20c/+65c fail-short mechanism (ft) the fs fail-short mechanism is a short circuit spring mounted onto a solder pellet located at the center electrode of the gas tube. under normal operating conditions, the pellet is positioned to make the spring float above the outer electrodes, as shown in figure g11. when a prolonged discharge event causes the gas tube temperature to reach the melting point of the solder, the pellet softens allowing the short circuit spring to contact with both outer electrodes. this process results in a permanent short-circuit between all three electrodes creating a low resistance path that conducts the fault current to ground without generating a significant amount of heat. short circuit spring solder pellet ceramic tube center electrode outer electrode the ft fail-short mechanism is a short circuit spring with a piece of plastic foil spot welded onto the center electrode. under normal operating conditions, the plastic foil makes the spring insulated from the two outer electrodes. when a prolonged discharge event causes the gas tube temperature to reach the melting point of the plastic foil, the plastic foil melts allowing the short circuit spring to contact both outer electrodes. this process results in a permanent short-circuit between all three electrodes creating a low resistance path that conducts the fault current to ground without generating a significant amount of heat. short circuit spring plastic foil c eramic tube o uter electrode center electrode figure g11 figure g12 min order box tape & reel box part description quantity quantity min order quantity quantity 3mm 2pole surface-mount -- 2000 16000 5mm 2pole no leads 5000 20000 -- 5mm 2pole, leads 1000 5000 -- 5mm 2pole surface-mount 5000 20000 1500 12000 6mm 2pole no leads 2000 10000 -- 6mm 2pole, leads 1000 5000 -- 6mm 2pole surface-mount 2000 10000 750 6000 8mm 2pole no leads 2000 10000 -- 8mm 2pole, leads 1000 5000 -- 8mm 2pole surface-mount 2000 10000 500 4000 5mm 3pole no leads 2500 10000 -- 5mm 3pole, leads 1000 5000 -- 5mm 3pole surface-mount 2500 10000 1000 8000 6mm 3pole no leads 2500 10000 -- 6mm 3pole, leads 1000 5000 -- 6mm 3pole surface-mount 2500 10000 750 4500 7mm 3pole, leads 1000 5000 -- 8mm 3pole no leads 1000 5000 -- 8mm 3pole, leads 1000 5000 -- 8mm 3pole surface-mount 1000 5000 500 2500 parts in bulk parts in tape and reel operation and storage temperatures for gas discharge tubes packaging information for gas discharge tubes rohs compliant, elv compliant hf halogen free 10
72 rohs compliant, elv compliant hf halogen free 10 part numbering system for gas discharge tubes gt c s 2 3 - 231 m - r 01 - fs - 2 packaging 2 = tape & reel nothing = tray packaging fs = solder pellet fail short mechanism on top fs2 = solder pellet fail short mechanism on bottom ft = plastic fail short mechanism on top surge rating 01 = 8x20s 1ka, 10 hits 02 = 8x20s 2.5ka, 10 hits 05 = 8x20s 5ka, 10 hits 10 = 8x20s 10ka, 10 hits 20 = 8x20s 20ka, 10 hits product family designator r = r series tolerance of 20% on dc switch voltage dc switch voltage of 230v 23 x 10* 1 ===230v, 23 x 10* 2 ==2300v diameter 3 = 3mm 5 = 5mm 6 = 6mm 8 = 8mm number of electrodes (2, 3) lead configuration a = axial leads c = chip type n = no leads s = surface-mount t = t-shape leads ceramic gas tube example part number for gas discharge tubes note: gtcs23-xxxm-r01 and gtcc23-xxxm-r01 parts available only in surface-mount and tape and reel packaging care should be taken when installing gas discharge tubes equipped with fail-short mechanisms into arrester magazines, printed circuit boards, etc. too much downward pressure may force the short circuit spring through the thin insulation tube creating a shorted condition. installation for gas discharge tubes surface-mount gdts can be soldered using standard pb-free reflow profile. solder reflow recommendations for surface-mount gdt devices
73 gas discharge tubes rohs compliant, elv compliant hf halogen free 10 part numbering system for gas discharge tubes contd 352 r 05 gn year and week of manufacture g = first half of 2004 n = week 14 per manufacturers lot number system 8x20s 10 hits surge current (05=5ka) product family designator r = r series voltage designator (35 = 350v, 352=3500v) manufacturers mark marking reference guide - example notes: gtcs23-xxxm-r01 and gtcc23-xxxm-r01 parts will have no marking. devices with no leads (gtcnxx-xxxx-xx) are not able to be soldered as their electrodes are nickel plated. they should be installed by insertion into a magazine clip. warning : ? users should independently evaluate the suitability of and test each product selected for their own application. ? operation beyond the maximum ratings or improper use may result in device damage and possible electrical arcing and flame. ? the devices are intended for protection against damage caused by occasional overvoltage fault conditions and should not be used when repeated fault conditions or prolonged trip events are anticipated. ? device performance can be impacted negatively if devices are handled in a manner inconsistent with recommended electronic, thermal, and mechanical procedures for electronic components.
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