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march 2009 rev 7 1/10 10 stn851 low voltage fast-switching npn power transistor features very low collector to em itter saturation voltage high current gain characteristic fast-switching speed applications emergency lighting voltage regulators relay drivers high efficiency low voltage switching applications description the device is manufactured in planar technology with "base island" layout. the resulting transistor shows exceptional high gain performance coupled with very low saturation voltage. figure 1. internal schematic diagram sot-223 1 2 4 3 table 1. device summary order code marking package packaging stn851 n851 sot-22 3 tape and reel www.st.com
electrical ratings stn851 2/10 1 electrical ratings table 2. absolute maximum ratings symbol parameter value unit v cbo collector-base voltage (i e = 0) 150 v v ceo collector-emitter voltage (i b = 0) 60 v v ebo emitter-base voltage (i c = 0) 7 v i c collector current 5 a i cm collector peak current (t p < 5 ms) 10 a i b base current 1 a i bm base peak current (t p < 5 ms) 2 a p tot total dissipation at t amb = 25 c 1.6 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 thj-amb thermal resistance junction-ambient (1) 1. device mounted on a p.c.b. area of 1 cm 2 78 c/w stn851 electrical characteristics 3 /10 2 electrical characteristics (t case = 25 c unless otherwise specified) table 4. electrical characteristics symbol parameter test cond itions min. typ. max. unit i cbo collector cut-off current (i e = 0) v cb = 120 v v cb = 120 v t c = 100 o c 50 1 na a i ebo emitter cut-off current (i c = 0) v eb = 7 v 10 na v (br)cbo collector-base breakdown voltage (i e = 0) i c = 100 a 150 v v (br)ceo (1) 1. pulse duration = 3 00 s, duty cycle 1.5% collector-emitter breakdown voltage (i b = 0) i c = 10 ma 60 v v (br)ebo emitter-base breakdown voltage (i c = 0) i e = 100 a 7 v v ce(sat) (1) collector-emitter saturation voltage i c = 100 ma i b = 5 ma i c = 1 a _ _ i b = 50 ma i c = 2 a i b = 50 ma i c = 5 a _ _ i b = 200 ma 10 70 140 3 20 50 120 250 500 mv mv mv mv v be(sat) (1) base-emitter saturation voltage i c = 4 a _ _ i b = 200 ma 1 1.15 v v be(on) (1) base-emitter on voltage i c = 4 a _ _ v ce = 1 v 0.89 1 v h fe (1) dc current gain i c = 10 ma v ce = 1 v i c = 2 a _ _ v ce = 1 v i c = 5 a v ce = 1 v i c = 10 a _ v ce = 1 v 150 150 90 3 0 3 00 270 140 50 3 50 f t transition frequency v ce = 10 v i c = 100 ma 1 3 0mhz c cbo collector-base capacitance (i e = 0) v cb = 10 v f = 1 mhz 50 pf t on t s t f resistive load turn-on time storage time fall time i c = 1 a v cc = 10 v i b1 = -i b2 = 0.1 a 50 1. 3 5 120 ns s ns electrical characteristics stn851 4/10 2.1 electrical characteristics (curves) figure 2. derating curve figure 3. dc current gain figure 4. collector-emitter saturation voltage figure 5. collector-emitter saturation voltage figure 6. base-emitter saturation voltage figure 7. base-emitter on voltage stn851 electrical characteristics 5/10 figure 8. resistive load switching time figure 9. resistive load switching time figure 10. resistive load switching time figure 11. inductive load switching time figure 12. inductive load switching time electrical characteristics stn851 6/10 2.2 test circuit figure 13. resistive load switching test circuit 1) fast electronic switch 2) non-inductive resistor stn851 package mechanical data 7/10 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 products status are available at: www.st.com. ecopack is an st trademark. package mechanical data stn851 8/10 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 0.35 d 6.30 6.50 6.70 e2.30 e1 4.60 e 3.30 3.50 3.70 h 6.70 7.00 7.30 v 10 o s ot-22 3 mechanical data 0046067_l stn851 revision history 9/10 4 revision history table 5. document revision history date revision changes 09-sep-200 3 6 16-mar-2009 7 updated sot-22 3 mechanical data stn851 10/10 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 authorize representative of st, 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. ? 2009 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 - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com |
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