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data sheet. types r1275ns14# to r1275ns21# issue 2 page 1 of 12 april, 2003 date:- 1 apr, 2003 data sheet issue:- 2 distributed gate thyristor types r1275ns14# to r1275ns21# (old type number: r395ch21) absolute maximum ratings voltage ratings maximum limits units v drm repetitive peak off-state voltage, (note 1) 1400-2100 v v dsm non-repetitive peak off-state voltage, (note 1) 1400-2100 v v rrm repetitive peak reverse voltage, (note 1) 1400-1800 v v rsm non-repetitive peak reverse voltage, (note 1) 1500-1900 v other ratings maximum limits units i t(av)m maximum average on-state current, t sink =55c, (note 2) 1275 a i t(av)m maximum average on-state current. t sink =85c, (note 2) 861 a i t(av)m maximum average on-state current. t sink =85c, (note 3) 508 a i t(rms) nominal rms on-state current, t sink =25c, (note 2) 2541 a i t(d.c.) d.c. on-state current, t sink =25c, (note 4) 2147 a i tsm peak non-repetitive surge t p =10ms, v rm =0.6v rrm , (note 5) 15.5 ka i tsm2 peak non-repetitive surge t p =10ms, v rm 10v, (note 5) 17 ka i 2 ti 2 t capacity for fusing t p =10ms, v rm =0.6v rrm , (note 5) 1.2010 6 a 2 s i 2 t i 2 t capacity for fusing t p =10ms, v rm 10v, (note 5) 1.4510 6 a 2 s critical rate of rise of on-state current (repetitive), (note 6) 1000 a/s (di/dt) cr critical rate of rise of on-state current (non-repetitive), (note 6) 1500 a/s v rgm peak reverse gate voltage 5 v p g(av) mean forward gate power 2 w p gm peak forward gate power 30 w t j op operating temperature range -40 to +125 c t stg storage temperature range -40 to +150 c notes:- 1) de-rating factor of 0.13% per c is applicable for t j below 25c. 2) double side cooled, single phase; 50hz, 180 half-sinewave. 3) single side cooled, single phase; 50hz, 180 half-sinewave. 4) double side cooled. 5) half-sinewave, 125c t j initial. 6) v d =67% v drm , i fg =2a, t r 0.5s, t case =125c.
westcode westcode westcode westcode an ixys company distributed gate thyristor types r1275ns14# to r1275ns21# data sheet. types r1275ns14# to r1275ns21# issue 2 page 2 of 12 april, 2003 characteristics parameter min. typ. max. test conditions (note 1) units v tm maximum peak on-state voltage - - 1.9 i tm =2000a v v tm maximum peak on-state voltage - - 2.45 i tm =3825a v v t0 threshold voltage - - 1.207 v r t slope resistance - - 0.342 m ? (dv/dt) cr critical rate of rise of off-state voltage 200 - - v d =80% v drm , linear ramp, gate o/c v/ s i drm peak off-state current - - 150 rated v drm ma i rrm peak reverse current - - 150 rated v rrm ma v gt gate trigger voltage - - 3.0 v i gt gate trigger current - - 300 t j =25c v d =10v, i t =3a ma v gd gate non-trigger voltage - - 0.25 rated v drm v i h holding current - - 1000 t j =25c ma t gd gate controlled turn-on delay time - 0.4 1.0 t gt turn-on time - 1.0 2.0 v d =67% v drm , i t =2000a, di/dt=60a/s, i fg =2a, t r =0.5s, t j =25c s q rr recovered charge - 940 - c q ra recovered charge, 50% chord - 420 500 c i rm reverse recovery current - 188 - a t rr reverse recovery time - 5.0 - i tm =1000a, t p =1000s, di/dt=60a/s, v r =50v s 55 - 60 i tm =1000a, t p =1000s, di/dt=60a/s, v r =50v, v dr =80%v drm , dv dr /dt=20v/s t q turn-off time (note 2) 65 - 70 i tm =1000a, t p =1000s, di/dt=60a/s, v r =50v, v dr =80%v drm , dv dr /dt=200v/s s - - 0.024 double side cooled k/w r thjk thermal resistance, junction to heatsink - - 0.048 single side cooled k/w f mounting force 19 - 26 kn w t weight - 510 - g notes:- 1) unless otherwise indicated t j =125 c. 2) the required t q (specified with dv dr /dt=200v/s) is represented by a ?#? in the device part number. see ordering information for details of t q codes.
westcode westcode westcode westcode an ixys company distributed gate thyristor types r1275ns14# to r1275ns21# data sheet. types r1275ns14# to r1275ns21# issue 2 page 3 of 12 april, 2003 notes on ratings and characteristics 1.0 voltage grade table voltage grade v drm v dsm v v rrm v v rsm v v d dc v v r dc v 14 1400 1400 1500 930 930 16 1600 1600 1700 1040 1040 18 1800 1800 1900 1150 1150 20 2000 1800 1900 1250 1150 21 2100 1800 1900 1300 1150 2.0 extension of voltage grades this report is applicable to other and higher voltage grades when supply has been agreed by sales/production. 3.0 extension of turn-off time this report is applicable to other t q /re-applied dv/dt combinations when supply has been agreed by sales/production. 4.0 repetitive dv/dt higher dv/dt selections are available up to 1000v/s on request. 5.0 de-rating factor a blocking voltage de-rating factor of 0.13%/c is applicable to this device for t j below 25c. 6.0 snubber components when selecting snubber components, care must be taken not to use excessively large values of snubber capacitor or excessively small values of snubber resistor. such excessive component values may lead to device damage due to the large resultant values of snubber discharge current. if required, please consult the factory for assistance. 7.0 rate of rise of on-state current the maximum un-primed rate of rise of on-state current must not exceed 1500a/s at any time during turn-on on a non-repetitive basis. for repetitive performance, the on-state rate of rise of current must not exceed 1000a/s at any time during turn-on. note that these values of rate of rise of current apply to the total device current including that from any local snubber network. 8.0 gate drive the nominal requirement for a typical gate drive is illustrated below. an open circuit voltage of at least 30v is assumed. this gate drive must be applied when using the full di/dt capability of the device. i gm i g t p1 4a/s the magnitude of i gm should be between five and ten times i gt , which is shown on page 2. its duration (t p1 ) should be 20s or sufficient to allow the anode current to reach ten times i l , whichever is greater. otherwise, an increase in pulse current could be needed to supply the necessary charge to trigger. the ?back-porch? current i g should remain flowing for the same duration as the anode current and have a magnitude in the order of 1.5 times i gt .
westcode westcode westcode westcode an ixys company distributed gate thyristor types r1275ns14# to r1275ns21# data sheet. types r1275ns14# to r1275ns21# issue 2 page 4 of 12 april, 2003 9.0 frequency ratings the curves illustrated in figures 10 to 18 are for guidance only and are superseded by the maximum ratings shown on page 1. 10.0 square wave ratings these ratings are given for load component rate of rise of forward current of 100 and 500 a/s. 11.0 duty cycle lines the 100% duty cycle is represented on all the ratings by a straight line. other duties can be included as parallel to the first. 12.0 maximum operating frequency the maximum operating frequency is set by the on-state duty, the time required for the thyristor to turn off (t q ) and for the off-state voltage to reach full value (t v ), i.e. v q pulse t t t f + + = 1 max 13.0 on-state energy per pulse characteristics these curves enable rapid estimation of device dissipation to be obtained for conditions not covered by the frequency ratings. let e p be the energy per pulse for a given current and pulse width, in joules let r th(j-hs) be the steady-state d.c. thermal resistance (junction to sink) and t sink be the heat sink temperature. then the average dissipation will be: () ( ) hs j th av sink p av r w t and f e w ? ? ? = ? = 125 .) (max 14.0 reverse recovery ratings (i) q ra is based on 50% i rm chord as shown in fig. 1 fig. 1 (ii) q rr is based on a 150 s integration time i.e. = s rr rr dt i q 150 0 . (iii) 2 1 t t factor k =
westcode westcode westcode westcode an ixys company distributed gate thyristor types r1275ns14# to r1275ns21# data sheet. types r1275ns14# to r1275ns21# issue 2 page 5 of 12 april, 2003 15.0 reverse recovery loss 15.1 determination by measurement from waveforms of recovery current obtained from a high frequency shunt (see note 1, page 5) and reverse voltage present during recovery, an instantaneous reverse recovery loss waveform must be constructed. let the area under this waveform be e joules per pulse. a new heat sink temperature can then be evaluated from the following: () ( ) hs j th original sink new sink r f k e t t ? ? + ? ? = ) ( ) ( where k=0.227 (c/w)/s e = area under reverse loss waveform per pulse in joules (w.s.) f = rated frequency hz at the original heat sink temperature. r th(j-hs) = d.c. thermal resistance (c/w). the total dissipation is now given by: f e w w (original) (tot) ? + = 15.2 determination without measurement in circumstances where it is not possible to measure voltage and current conditions, or for design purposes, the additional losses e in joules may be estimated as follows. let e be the value of energy per reverse cycle in joules (curves in figure 9). let f be the operating frequency in hz () ( ) () f r e t t th original sink new sink ? ? ? = where t sink (new) is the required maximum heat sink temperature and t sink (original) is the heat sink temperature given with the frequency ratings. a suitable r-c snubber network is connected across the thyristor to restrict the transient reverse voltage to a peak value (v rm ) of 67% of the maximum grade. if a different grade is being used or v rm is other than 67% of grade, the reverse loss may be approximated by a pro rata adjustment of the maximum value obtained from the curves. note 1 - reverse recovery loss by measurement this thyristor has a low reverse recovered charge and peak reverse recovery current. when measuring the charge, care must be taken to ensure that: (a) a.c. coupled devices such as current transformers are not affected by prior passage of high amplitude forward current. (b) a suitable, polarised, clipping circuit must be connected to the input of the measuring oscilloscope to avoid overloading the internal amplifiers by the relatively high amplitude forward current signal (c) measurement of reverse recovery waveform should be carried out with an appropriate critically damped snubber, connected across diode anode to cathode. the formula used for the calculation of this snubber is shown below: dt di s r c v r ? ? = 4 2 where: v r c s r = = = commutating source voltage snubber capacitance snubber resistance
westcode westcode westcode westcode an ixys company distributed gate thyristor types r1275ns14# to r1275ns21# data sheet. types r1275ns14# to r1275ns21# issue 2 page 6 of 12 april, 2003 16.0 computer modelling parameters 16.1 calculating v t using abcd coefficients the on-state characteristic i t vs v t , on page 7 is represented in two ways; (i) the well established v 0 and r s tangent used for rating purposes and (ii) a set of constants a, b, c, d, forming the coefficients of the representative equation for v t in terms of i t given below: () t t t t i d i c i b a v ? + ? + ? + = ln the constants, derived by curve fitting software, are given in this report for hot characteristics where possible. the resulting values for v t agree with the true device characteristic over a current range, which is limited to that plotted. 125c coefficients a 1.23001347 b -0.0588432 c 1.285310 -4 d 0.01923445 16.2 d.c. thermal impedance calculation = = ? ? ? ? ? ? ? ? ? ? ? = n p p t p t p e r r 1 1 where p = 1 to n, n is the number of terms in the series. t = duration of heating pulse in seconds. r t = thermal resistance at time t. r p = amplitude of p th term. p = time constant of r th term. d.c. double side cooled term12345 r p 0.01249139 6.31683310 -3 1.85085510 -3 1.92204510 -3 6.13533010 -4 p 0.8840810 0.1215195 0.03400152 6.74290810 -3 1.32629210 -3 d.c. single side cooled term123456 r p 0.02919832 4.86356810 -3 3.74479810 -3 6.81803410 -3 2.18355810 -3 1.84829410 -3 p 6.298105 3.286174 0.5359179 0.1186897 0.02404574 3.37947610 -3
westcode westcode westcode westcode an ixys company distributed gate thyristor types r1275ns14# to r1275ns21# data sheet. types r1275ns14# to r1275ns21# issue 2 page 7 of 12 april, 2003 curves figure 1 - on-state characteristics of limit device figure 2 - transient thermal impedance 100 1000 10000 00.511.522.53 instantaneous on-state voltage - v t (v) instantaneous on-state current - i t (a) t j = 125c 0.00001 0.0001 0.001 0.01 0.1 0.0001 0.001 0.01 0.1 1 10 100 time (s) transient thermal impedance - z (th)t (k/w) ssc 0.048k/w dsc 0.024k/w ` figure 3 - gate characteristics - trigger limits figure 4 - gate characteristics - power curves 0 1 2 3 4 5 6 00.20.40.60.81 gate trigger current - i gt (a) gate trigger voltage - v gt (v) i gd , v gd i gt , v gt min v g dc max v g dc t j =25c 125c 25c -10c -40c 0 2 4 6 8 10 12 14 16 18 20 0246810 gate trigger current - i gt (a) gate trigger voltage - v gt (v) p g 2w dc p g max 30w dc min v g dc max v g dc t j =25c r1275ns14#-21# issue 2 r1275ns14#-21# issue 2 r1275ns14#-21# issue 2 r1275ns14#-21# issue 2
westcode westcode westcode westcode an ixys company distributed gate thyristor types r1275ns14# to r1275ns21# data sheet. types r1275ns14# to r1275ns21# issue 2 page 8 of 12 april, 2003 figure 5 - total recovered charge, q rr figure 6 - recovered charge, q ra (50% chord) 100 1000 10000 10 100 1000 commutation rate - di/dt (a/s) total recovered charge - q rr (c) 2000a t j = 125c 1500a 1000a 500a 100 1000 10000 10 100 1000 commutation rate - di/dt (a/s) recovered charge - q ra (c) 1500a t j = 125c 2000a 1000a 500a figure 7 - peak reverse recovery current, i rm figure 8 - maximum recovery time, t rr (50% chord) 10 100 1000 10 100 1000 commutation rate - di/dt (a/s) reverse recovery current - i rm (a) 2000a 1500a 1000a 500a t j = 125c 1 10 10 100 1000 commutation rate - di/dt (a/s) reverse recovery time - t rr (s) t j = 125c 2000a 1500a 500a 1000a r1275ns14#-21# issue 2 r1275ns14#-21# issue 2 r1275ns14#-21# issue 2 r1275ns14#-21# issue 2
westcode westcode westcode westcode an ixys company distributed gate thyristor types r1275ns14# to r1275ns21# data sheet. types r1275ns14# to r1275ns21# issue 2 page 9 of 12 april, 2003 figure 9 ? reverse recovery energy per pulse figure 10 - sine wave energy per pulse 100 1000 10 100 1000 commutation rate - di/dt (a/s) energy per pulse - e r (mj) snubber value 0.25f, 5 ? v rm = 67%v rrm t j = 125c 2000 a 1500 a 1000 a 500 a 1.00e-02 1.00e-01 1.00e+00 1.00e+01 1.00e+02 1.00e-05 1.00e-04 1.00e-03 1.00e-02 pulse width (s) energy per pulse (j) 3ka 2ka 1.5ka 1ka t j =125c 5ka 500a figure 11 - sine wave frequency ratings figure 12 - sine wave frequency ratings 1.00e+01 1.00e+02 1.00e+03 1.00e+04 1.00e+05 1.00e-05 1.00e-04 1.00e-03 1.00e-02 pulse width (s) frequency (hz) 3ka 5ka 2ka 1.5ka 1ka t hs =55c 100% duty cycle 1.00e+01 1.00e+02 1.00e+03 1.00e+04 1.00e+05 1.00e-05 1.00e-04 1.00e-03 1.00e-02 pulse width (s) frequency (hz) 5ka 3ka 1.5ka 1ka 2ka t hs =85c 100% duty cycle 500a r1275ns14#-21# issue 2 r1275ns14#-21# issue 2 r1275ns14#-21# issue 2 r1275ns14#-21# issue 2
westcode westcode westcode westcode an ixys company distributed gate thyristor types r1275ns14# to r1275ns21# data sheet. types r1275ns14# to r1275ns21# issue 2 page 10 of 12 april, 2003 figure 13 - square wave frequency ratings figure 14 - square wave frequency ratings 1.00e+01 1.00e+02 1.00e+03 1.00e+04 1.00e+05 1.00e-05 1.00e-04 1.00e-03 1.00e-02 pulse width (s) frequency (hz) 3ka 2ka 1.5ka 5ka di/dt=100a/s t hs =55c 100% duty cycle 1ka 1.00e+01 1.00e+02 1.00e+03 1.00e+04 1.00e+05 1.00e-05 1.00e-04 1.00e-03 1.00e-02 pulse width (s) frequency (hz) 2ka 1.5ka 1ka 500a di/dt=500a/s t hs =55c 100% duty cycle 5ka 3ka figure 15 - square wave frequency ratings figure 16 - square wave frequency ratings 1.00e+01 1.00e+02 1.00e+03 1.00e+04 1.00e+05 1.00e-05 1.00e-04 1.00e-03 1.00e-02 pulse width (s) frequency (hz) 3ka 2ka 1.5ka 1ka 500a di/dt=100a/s t hs =85c 100% duty cycle 5ka 1.00e+00 1.00e+01 1.00e+02 1.00e+03 1.00e+04 1.00e+05 1.00e-05 1.00e-04 1.00e-03 1.00e-02 pulse width (s) frequency (hz) 3ka 2ka 1.5ka 1ka di/dt=500a/s t hs =85c 100% duty cycle 5ka 500a r1275ns14#-21# issue 2 r1275ns14#-21# issue 2 r1275ns14#-21# issue 2 r1275ns14#-21# issue 2
westcode westcode westcode westcode an ixys company distributed gate thyristor types r1275ns14# to r1275ns21# data sheet. types r1275ns14# to r1275ns21# issue 2 page 11 of 12 april, 2003 figure 17 - square wave energy per pulse figure 18 - square wave energy per pulse 1.00e-02 1.00e-01 1.00e+00 1.00e+01 1.00e+02 1.00e+03 1.00e-05 1.00e-04 1.00e-03 1.00e-02 pulse width (s) energy per pulse (j) 3ka 2ka 1.5ka 1ka 500a di/dt=100a/s t j =125c 5ka 1.00e-02 1.00e-01 1.00e+00 1.00e+01 1.00e+02 1.00e+03 1.00e-05 1.00e-04 1.00e-03 1.00e-02 pulse width (s) energy per pulse (j) t j =125c di/dt=500a/s 1.5ka 1ka 500a 5ka 3ka 2ka figure 19 - maximum surge and i 2 t ratings 1000 10000 100000 total peak half sine surge current - i tsm (a) 1.00e+05 1.00e+06 1.00e+07 maximum i 2 t (a 2 s) 135101 5 10 50 100 duration of surge (ms) duration of surge (cycles @ 50hz) t j (initial) = 125c i 2 t: v rrm 10v i 2 t: 60% v rrm i tsm : v rrm 10v i tsm : 60% v rrm gate may temporarily lose control of conduction angle r1275ns14#-21# issue 2 r1275ns14#-21# issue 2 r1275ns14#-21# issue 2
westcode westcode westcode westcode an ixys company distributed gate thyristor types r1275ns14# to r1275ns21# data sheet. types r1275ns14# to r1275ns21# issue 2 page 12 of 12 april, 2003 outline drawing & ordering information ordering information (please quote 10 digit code as below) r1275 ns ? ? ? ? ? ? ? ?# # # # fixed type code fixed outline code fixed voltage code v drm /100 14-21 t q code l=65s, m=70s typical order code: r1275ns21l ? 2100v v drm , 1800v v rrm , 65s t q , 27.7mm clamp height capsule. ixys semiconductor gmbh edisonstra?e 15 d-68623 lampertheim tel: +49 6206 503-0 fax: +49 6206 503-627 e-mail: marcom@ixys.de westcode semiconductors ltd langley park way, langley park, chippenham, wiltshire, sn15 1ge. tel: +44 (0)1249 444524 fax: +44 (0)1249 659448 e-mail: wsl.sales@westcode,com ixys corporation 3540 bassett street santa clara ca 95054 usa tel: +1 (408) 982 0700 fax: +1 (408) 496 0670 e-mail: sales@ixys.net www.westc ode.com www.ixys.net westcode semiconductors inc 3270 cherry avenue long beach ca 90807 usa tel: +1 (562) 595 6971 fax: +1 (562) 595 8182 e-mail: wsi.sales@westcode.com the information contained herein is confidential and is protected by copyright. the information may not be used or disclosed except with the written permission of and in the manner permitted by the proprietors westcode semiconductors ltd. in the interest of product improvement, westcode reserves the right to change specifications at any time without prior notice. devices with a suffix code (2-letter or letter/digit/letter combination) added to their generic code are not necessarily subjec t to the conditions and limits contained in this report. ? westcode semiconductors ltd.

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