august 2010 doc id 13836 rev 2 1/10 10 STD878 stn878 high current, high performance, low voltage npn transistors features very low collector to em itter saturation voltage dc current gain, h fe >100 5 a continuous collector current applications power management in portable equipment voltage regulation in bias supply circuits switching regulator in battery charger applications heavy load driver description the devices are manufactured in low voltage npn planar technology with ?base island? layout. the resulting transistor show s exceptional high gain performance coupled with very low saturation voltage. figure 1. internal schematic diagram sot-223 1 2 4 3 dpak 1 3 4 table 1. device summary order codes markings packages packaging STD878t4 d878 dpak tape and reel stn878 n878 sot-223 tape and reel www.st.com obsolete product(s) - obsolete product(s)
electrical ratings STD878, stn878 2/10 doc id 13836 rev 2 1 electrical ratings table 2. absolute maximum ratings symbol parameter value unit v cbo collector-base voltage (i e = 0) 45 v v ceo collector-emitter voltage (i b = 0) 30 v v ebo emitter-base voltage (i c = 0) 6 v i c collector current 5 a i cm collector peak current (t p < 5 ms) 10 a p tot total dissipation at t c = 25 c for STD878 15 w total dissipation at t amb = 25 c for stn878 1.6 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 thjc thermal resistance junction-case for STD878 __ max 8.3 c/w r thja thermal resistance junction-ambient for stn878 (1) _ max 1. device mounted on pcb area of 1 cm 2 . 78 c/w obsolete product(s) - obsolete product(s)
STD878, stn878 electrical characteristics doc id 13836 rev 2 3/10 2 electrical characteristics t case = 25 c unless otherwise specified. table 4. electrical characteristics symbol parameter test conditions min. typ. max. unit i cbo collector cut-off current (i e = 0) v cb = 30 v v cb = 30 v; t c = 100 c 10 100 a a i ebo emitter cut-off current (i c = 0) v eb = 6 v 10 a v (br)ceo (1) 1. pulse test: pulse duration 300 s, duty cycle 2 % collector-emitter breakdown voltage (i b = 0) i c = 10 ma 30 v v (br)cbo collector-base breakdown voltage (i e = 0) i c = 100 a 45 v v (br)ebo emitter-base breakdown voltage (i c = 0) i e = 100 a 6 v v ce(sat) (1) collector-emitter saturation voltage i c = 0.5 a i b = 5 ma i c = 2 a i b = 50 ma i c = 5 a i b = 0.25 a i c = 6 a i b = 0.25 a i c = 8 a i b = 0.4 a i c = 10 a i b = 0.5 a 0.7 1 1.2 0.15 0.35 0.7 v v v v v v v be(sat) (1) base-emitter saturation voltage i c = 2 a i b = 50 ma i c = 6 a i b = 0.25 a 1.2 1.1 v v h fe (1) dc current gain i c = 10 ma v ce = 1 v i c = 500 ma v ce = 1 v i c = 5 a v ce = 1 v i c = 5 a v ce = 1 v t c = 100 c i c = 8 a v ce = 1 v i c = 10 a v ce = 1 v 120 100 70 200 200 100 100 55 35 300 t d t r t s t f resistive load delay time rise time storage time fall time i c = 3 a v cc = 20 v i b1 = - i b2 = 60 ma see figure 8 180 160 250 80 220 210 300 100 ns ns ns ns obsolete product(s) - obsolete product(s)
electrical characteristics STD878, stn878 4/10 doc id 13836 rev 2 2.1 electrical characteristics (curves) figure 2. dc current gain (v ce = 1 v) figure 3. dc current gain (v ce = 3 v) figure 4. collector-emitter saturation voltage figure 5. base-emitter saturation voltage figure 6. resistive load switching time (on) figure 7. resistive load switching time (off) obsolete product(s) - obsolete product(s)
STD878, stn878 electrical characteristics doc id 13836 rev 2 5/10 2.2 test circuits figure 8. resistive load switching test circuit 1. fast electronic switch 2. non-inductive resistor obsolete product(s) - obsolete product(s)
package mechanical data STD878, stn878 6/10 doc id 13836 rev 2 3 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. obsolete product(s) - obsolete product(s)
STD878, stn878 package mechanical data doc id 13836 rev 2 7/10 dim. mm. min. typ. max. a 1. 8 0 a1 0.02 0.1 b 0.60 0.70 0. 8 5 b1 2.90 3 .00 3 .15 c 0.24 0.26 0. 3 5 d6. 3 0 6.50 6.70 e2. 3 0 e1 4.60 e 3 . 3 0 3 .50 3 .70 h 6.70 7.00 7. 3 0 v 10 o s ot-22 3 mechanical data 0046067_m obsolete product(s) - obsolete product(s)
package mechanical data STD878, stn878 8/10 doc id 13836 rev 2 dim. mm. . x a m p y t . n i m 0 4 . 2 0 2 . 2 a 0 1 . 1 0 9 . 0 1 a 3 2 . 0 3 0 . 0 2 a 0 9 . 0 4 6 . 0 b 0 4 . 5 0 2 . 5 4 b 0 6 . 0 5 4 . 0 c 0 6 . 0 8 4 . 0 2 c 0 2 . 6 0 0 . 6 d 0 1 . 5 1 d 0 6 . 6 0 4 . 6 e 0 7 . 4 1 e 8 2 . 2 e 0 6 . 4 0 4 . 4 1 e 0 1 . 0 1 5 3 . 9 h 1 l 0 8 . 2 1 l 0 8 . 0 2 l 1 0 6 . 0 4 l 0 2 . 0 r v2 0 o 8 o to-252 (dpak) mechanical data 006 8 772_g obsolete product(s) - obsolete product(s)
STD878, stn878 revision history doc id 13836 rev 2 9 /10 4 revision history table 5. document revision history date revision changes 21-aug-2007 1 initial release. 30-aug-2010 2 inserted STD878t4 order code table 1 on page 1 . obsolete product(s) - obsolete product(s)
STD878, stn878 10/10 doc id 13836 rev 2 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by an authorized st representative, st products are not recommended, authorized or warranted for use in milita ry, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2010 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com obsolete product(s) - obsolete product(s)
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