337 ?2008 littelfuse, inc. revised: july 9, 2008 teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. 337 ?2008 littelfuse, inc. teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. htxxx & htmxxx & stxxx series standard bidirectional diac trigger diacs htxxx & htmxxx & stxxx series the htm, ht, and st series of bilateral trigger diacs offer a range of voltage characteristics from 27v to 70v. a diac semiconductor is a full- wave or bidirectional thyristor. it is triggered from a blocking state to a conduction state for either polarity of applied voltage whenever the amplitude of applied voltage exceeds the brea kover voltage of the diac. description features & bene?ts t compliant t # j m b u f s b m u s j h h f s j o h e f w j d f t ( m b t t q b t t j w b u f e junctions t 8 j e f w p m u b h f s b o h f selections t - p o h u f s n s f m j b c j m j u z t 1 b s b n f u f s t u b c j m j u z t 3 f m j b c m f c b s s j f s b h b j o t u junction contamination st series: t & q p y z 4 . q b d l b h f (do-214) t ) j h i u f n q f s b u v s f
t p m e f s bonded die attachment htm/ht series: t . * / * . & - ' % 0 u s j h h f s package schematic symbol absolute maximum ratings symbol parameter test conditions min max unit i trm pulse on-state current 120pps, t a 40c pulse width = 10 s 2 a 1. 5 (*) t s storage temperature range -40 +125 c t j operating junction temperature -40 +125 c p d(av) device power dissipation t a = -40c to +40c see product selector table mw (*)only applies to ht-60 notes: 1. service dissipation (at t a = -40c to +40c): 250mw for do-35 and minimelf/sod-80 and 300mw for do214 2. above +40c, derate: 3.6mw/c for do-35 and minimelf/sod-80 and 3mw/c for do214 diacs are used to trigger triacs and scrs in phase control circuits for lamp dimming, universal motor speed control, and heat control. they are used also for triggering transistors in solid state ballast lighting controls. applications
338 revised: july 9, 2008 ?2008 littelfuse, inc. teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. standard bidirectional diac trigger htxxx & htmxxx & stxxx series thermal resistances symbol description test conditions value unit r r (j-l) junction to lead maximum lead temperature: 85c do-35 100 c/w maximum lead temperature: 90c do-214 65* c/w maximum lead temperature: 87c minimelf 75 c/w r r (j-a) junction to ambient free-air do-35 278 c/w * mounted on 1 cm 2 copper foil surface; two-ounce copper foil electrical characteristics (t j = 25c, unless otherwise speci?ed) symbol description test conditions min max unit v bo brea kover/trigger voltage 50/60hz sine wave see product selector table see product selector table v v bo brea kover voltage symmetry +v bo to -v bo 2 (note 1) v v bb breakback voltage (note 4) v bo to v 10ma 5v v bo to v 6ma (*) 15 v v bb (dyn) dynamic breakback voltage (notes 2 & 3) 120 pps 10 v i bo brea kover current 50/60hz sine wave 15 a (*) only applies to ht-60 electrical characteristic notes: 1. brea kover voltage symmetry as close as 1v is available from the factory for these products. 2. see figure 4 and figure 5 for test circuit and wavef orms. 3. typical switching time is 900 nano-seconds measured at i pk (figure 4) across a 20 resistor (figure 5). switching time is de?ned as rise time of i pk between the 10% to 90% points 4. see v-i characteristics static characteristics - not applicable product selector part number package availability v bo minimelf do-35 do-214 min max xx-32 ht-32 st-32 27v 37v xx-32a/ 5761 ht-32a 28v 36v xx-32b/ 5761a htm-32b ht-32b st-32b 30v 34v xx-34b ht-34b st-34b 32v 36v xx-35 ht-35 st-35 30v 40v xx-36a/ 5762 ht-36a st-36a 32v 40v xx-36b ht-36b st-36b 34v 38v xx-40 ht-40 st-40 35v 45v xx-60 ht-60 56v 70v xx = htm for minimelf ht for do-35 st for do-214
339 ?2008 littelfuse, inc. revised: july 9, 2008 teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. 339 ?2008 littelfuse, inc. teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. htxxx & htmxxx & stxxx series standard bidirectional diac trigger diacs figure 1: v-i characteristics figure 2: typical diac/triac full- wave phase control circuit 120 v ac 60 hz resistive load 3.3 k 200 k 0.1 f 100 v diac triac mt2 mt1 g
figure 3: repetitive peak on-state current vs. pulse duration 12 4 0 0 0 0 1 0 0 0 4 0 0 0 2 0 0 0 1 0 0 4 0 0 2 6 .001 .002 .003 .00 5 0.1 0.2 0.3 3.0 0. 5 5 .0 .01 0.02 0.03 0.0 5 1.0 10 2.0 repetitive peak on-state current (i trm ) C amps base pulse duration C s safe operating area 10 20 40 60 100 pulse repetition rate = 120 pps t a = 4 0 ?c ht-60 htm-32b ht-32x, -3 4 x, -3 5 , -36x, - 4 0 ht- 5 761, - 5 761a, - 5 762 st-32x, -3 4 x, -3 5 , -36x, - 4 0 figure 4: normalized v bo change vs. junction temperature -8% -6% -4% -2% 0% 2% 4% 6% -40 -20 0 20 40 60 80 100 120 140 junction temperature (t j ) -- c v bo change -- % figure 5: test circuit waveforms (refer to figure 5)
340 revised: july 9, 2008 ?2008 littelfuse, inc. teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. standard bidirectional diac trigger htxxx & htmxxx & stxxx series figure 6: circuit used to measure diac characteristics (refer to figure 4) figure 7: peak output current vs. triggering capacitance (per figure 5 with r l of 20 ) 120 v rms 60 hz 47 k d.u.t. r l 20 1% v c 100 k * c t i l 0.1 f * adjust for one ?ring in each half cycle. d.u.t. = diac triggering capacitance (c t ) C f peak output current (i pk ) C ma 0 5 0 100 1 5 0 200 2 5 0 300 .01 .02 .03 .04 .0 5 .06 .07 .08 .09 .10 typical (3 5 v device) soldering parameters re?ow condition pb C free assembly pre heat - temperature min (t s(min) ) 150c - temperature max (t s(max) ) 200c - time (min to max) (t s ) 60 C 190 secs average ramp up rate (liquidus temp (t l ) to peak 5c/second max t s(max) to t l - ramp-up rate 5c/second max re?ow - temperature (t l ) (liquidus) 217c - time (min to max) (t s ) 60 C 150 seconds peak temperature (t p ) 260 c time within 5c of actual peak temperature (t p ) 20 C 40 seconds ramp-down rate 5c/second max time 25c to peak temperature (t p ) 8 minutes max. do not exceed 280c time temperature t p t l t s(max) t s(min) 25 t p t l t s time to peak temperature preheat p reheat ramp-up ramp-up ramp-down r am p - do
341 ?2008 littelfuse, inc. revised: july 9, 2008 teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. 341 ?2008 littelfuse, inc. teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. htxxx & htmxxx & stxxx series standard bidirectional diac trigger diacs physical speci?cations terminal finish 100% matte-tin plated/ pb-free solder dipped body material do-214: ul recognized epoxy meeting ?ammabilty classi?cation 94v-0. do-35/minimelf: glass case body lead material do-214: copper alloy do-35/minimelf: copper clad iron reliability/environmental tests test speci?cations and conditions high temperature voltage blocking mil-std-750, m-1040, cond a applied 80% of rated min v bo (vac-peak) @ 125c for 1008 hours temperature cycling mil-std-750, m-1051, 100 cycles; -40c to +150c; 15-min dwell-time temperature/ humidity eia / jedec, jesd22-a101 1008 hours; 80% of rated min v bo (v dc ): 85c; 85% rel humidity high temp storage mil-std-750, m-1031,1008 hours; 150c low-temp storage 1008 hours; -40c thermal shock mil-std-750, m-1056 10 cycles; 0c to 100c; 5-min dwell time at each temperature; 10 sec (max) transfer time between temperature autoclave eia / jedec, jesd22-a102 168 hours (121c at 2 atms) and 100% r/h resistance to solder heat mil-std-750 method 2031 solderability ansi/j-std-002, category 3, test a lead bend mil-std-750, m-2036 cond e burn-in 1 ?ring per 1/2 cycle, 168 hours dimensions C minimelf / sod-80 (mm package) a c c d b .002 e-f e f dimensions inches millimeters min typ max min typ max a 0.125 0.134 0.142 3.18 3.40 3.61 b 0.066 0.068 0.070 1.68 1.73 1.78 c 0.012 0.018 0.020 0.30 0.46 0.51 d 0.063 1.60 design considerations dimensions C do-35 (y package) c b b a e typ. d (typ.) dimension inches millimeters min max min max a (note 1) 0.060 0.090 1.530 2.280 b (note 2) 0.015 0.381 c (note 1) 0.135 0.165 3.430 4.190 d 0.018 0.022 0.458 0.558 e 1.000 25.400 notes: 1. package contour optional within dimensions a and c. slugs, if any, shall be included within this cylinger but shall not be subject to the minimum limit of dimention a. 2. lead diameter is not controlled in this zone to allow for ?ash, lead ?nish build-up and minor irregularities other than slugs. careful selection of the correct device for the applications operating parameters and environment will go a long way toward extending the operating life of the thyristor. overheating and surge currents are the main killers of diacs. correct mounting, soldering, and forming of the leads also help protect against component damage.
342 revised: july 9, 2008 ?2008 littelfuse, inc. teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. standard bidirectional diac trigger htxxx & htmxxx & stxxx series dimensions C do-214 (s package) h k j e a c d b t / t temperature measurement point cl g l f recommended soldering pad outline (reference only) 2.80 (.110) 2.00 (.079) 2.00 (.079) dimension inches millimeters min max min max a 0.140 0.155 3.56 3.94 b 0.205 0.220 5.21 5.59 c 0.077 0.083 1.96 2.11 d 0.166 0.180 4.22 4.57 e 0.036 0.063 0.91 1.60 f 0.066 0.083 1.67 2.11 g 0.004 0.008 0.10 0.20 h 0.077 0.086 1.96 2.18 j 0.043 0.053 1.09 1.35 k 0.008 0.012 0.20 0.30 l 0.039 0.049 0.99 1.24 packing options part number marking package weight/ unit packing mode base quantity quantity reel box htm-xxxrp minimelf 0.040g tape & reel 5000 2500 ht-xxxrp do35 0.150g tape & reel 5000 5000 ht-xxx do35 0.150g bulk 5000 5000 st-xxxrp stxxx do214 0.075g tape & reel 2500 2500
343 ?2008 littelfuse, inc. revised: july 9, 2008 teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. 343 ?2008 littelfuse, inc. teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. htxxx & htmxxx & stxxx series standard bidirectional diac trigger diacs do-214 embossed carrier reel pack (rp) speci?cations do-35 reel pack (rp) speci?cations 0.472 (12.0) 0.36 (9.2) 0.315 (8.0) 0.157 (4.0) 0.49 (12.4) 0.512 (13.0) arbor hole dia. 12.99 (330.0) dimensions are in inches (and millimeters). direction of feed 0.059 dia (1.5) cover tape 3.1 5 (80.0) typ do-3 5 dimensions are in inches (and millimeters). direction of feed 10.0 - 14.0 (2 5 4.0 - 3 5 6.0) 0.2 5 2 (6.4) 0.9 5 6 (24.3) 0.197 ( 5 .0) 2.063 ( 5 2.4) meets all eia-481-1 standards meets all eia-296 standards
344 revised: july 9, 2008 ?2008 littelfuse, inc. teccor ? brand thyristors speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. speci?cations are subject to change without notice. please refer to http://www.littelfuse.com for current information. standard bidirectional diac trigger htxxx & htmxxx & stxxx series part numbering system voltage range: 32= 27v to 37v 32a/ 5 761= 28v to 36v 32b/ 5 761a= 30v to 34v 34b= 32v to 36v 3 5 = 30v to 40v 36a/ 5 762= 32v to 40v 36b= 34v to 38v 40= 3 5 v to 4 5 v 60= 5 6v to 70v x xxxx xx tm packaging: blank = bulk pack rp = reel pack package type: h = do-3 5 (with leads) or minimelf (no leads) s = do-214 device type: t = diac package type designator: m : minimelf (surface mount version without leads) first line: part number second line: date code do-214: do-3 5 & minimelf: no marking part marking system minimelf reel pack (rp) speci?cations 13mm abor hole diameter 177.8mm 9.4mm direction of feed 1. 5 mm 4mm 8mm 4mm 5 .8mm
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