preliminary data this is preliminary information on a new product now in deve lopment or undergoing evaluation. details are subject to change without notice. november 2009 doc id 16796 rev 1 1/9 9 STD840DN40 dual npn high voltage transi stors in a single package features low v ce(sat) simplified circuit design reduced component count fast switching speed applications compact fluorescent lamp (cfl) 220 v mains electronic ballast fo r fluorescent lighting description the device is a dual npn high voltage power transistors manufactured in multi-epitaxial planar technology. it is housed in dual island dip-8 package with separated terminals for high assembly flexibility. figure 1. internal schematic diagram dip-8 1 4 8 table 1. device summary order code marking package packaging STD840DN40 d840dn40 dip-8 tube www.st.com
electrical ratings STD840DN40 2/9 doc id 16796 rev 1 1 electrical ratings table 2. absolute maximum ratings symbol parameter value unit v cbo collector-base voltage (i e = 0) 700 v v ceo collector-emitter voltage (i b = 0) 400 v v ebo emitter-base voltage (i c = 0, i b = 1.5 a, t p < 10 ms) v (br)ebo v i c collector current 4 a i cm collector peak current (t p < 5 ms) 8 a i b base current 1.5 a i bm base peak current (t p < 5 ms) 3 a p tot total dissipation at t amb = 25 c single transistor tbd w total dissipation at t amb = 25 c both transistors tbd w t stg storage temperature -65 to 150 c t j max. operating junction temperature 150 c table 3. thermal data symbol parameter value unit r thja (1) 1. when mounted on 1 inch square pad of 2 oz. copper, t 10 sec. thermal resistance junction-ambient (single transistor) tbd c/w thermal resistance junction-ambient (both transistors) tbd c/w
STD840DN40 electrical characteristics doc id 16796 rev 1 3/9 2 electrical characteristics t case = 25 c unless otherwise specified. table 4. electrical characteristics symbol parameter test conditions min. typ. max. unit i ces collector cut-off current (v be = 0) v ce = 700 v v ce = 700 v t c = 125 c 100 500 a a i ceo collector cut-off current (i b = 0) v ce = 400 v 250 a v (br)ebo emitter-base breakdown voltage (i c = 0) i e = 10 ma 9 18 v v ceo(sus) (1) collector-emitter sustaining voltage (i b = 0) i c = 10 ma 400 v v ce(sat) (1) 1. pulse test: pulse duration 300 s, duty cycle 2 %. collector-emitter saturation voltage i c = 1 a i b = 0.2 a i c = 2 a i b = 0.4 a 0.5 1 v v v be(sat) (1) base-emitter saturation voltage i c = 1 a i b = 0.2 a i c = 2 a i b = 0.4 a 1.2 1.3 v v h fe (1) dc current gain i c = 10 ma v ce = 5 v i c = 2 a v ce = 5 v 10 824 v f diode forward voltage i f = 1 a 2.5 v t s t f resistive load storage time fall time i c = 1 a i b1 = - i b2 = 0.2 a v cc = 125 v t p = 20 s 2.5 0.2 s s
electrical characteristics STD840DN40 4/9 doc id 16796 rev 1 2.1 electrical characteristics (curves) figure 2. dc current gain (v ce = 1 v) figure 3. dc current gain (v ce = 5 v) figure 4. collector-emitter saturation voltage figure 5. base-emitter saturation voltage figure 6. freewheel diode forward voltage figure 7. resistive load switching time
STD840DN40 test circuit doc id 16796 rev 1 5/9 3 test circuit 1. fast electronic switch 2. non-inductive resistor figure 8. resistive load switching test circuit
package mechanical data STD840DN40 6/9 doc id 16796 rev 1 4 package mechanical data in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. table 5. dip-8 mechanical data dim. mm. min. typ. max. a 4.80 a1 0.50 a2 3.10 3.50 a3 1.40 1.60 b 0.38 0.55 b1 0.38 0.51 b2 1.47 1.57 b3 0.89 1.09 c 0.21 0.35 c1 0.20 0.30 d 9.10 9.30 d1 0.13 e 7.62 8.25 e1 6.25 6.45 e2.54 ea 7.62 eb 7.62 10.90 ec 0 1.52 l 2.92 3.81
STD840DN40 package mechanical data doc id 16796 rev 1 7/9 figure 9. drawing dimension dip-8 8145726_a
revision history STD840DN40 8/9 doc id 16796 rev 1 5 revision history table 6. document revision history date revision changes 18-nov-2009 1 initial release.
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