mmbd4448hw document number: ds30228 rev. 8 - 2 1 of 4 www.diodes.com february 2011 ? diodes incorporated mmbd4448hw surface mount switching diode features ? fast switching speed ? surface mount package ideally suited for automated insertion ? for general purpose switching applications ? high conductance ? lead free/rohs compliant (note 1) ? "green" device (notes 2 and 3) mechanical data ? case: sot-323 ? case material: molded plastic, "green" molding compound (note 3). ul flammability classification rating 94v-0 ? moisture sensitivity: level 1 per j-std-020 ? terminals: matte tin finish annealed over alloy 42 leadframe (lead free plating). solderable per mil-std-202, method 208 ? polarity: see diagram ? weight: 0.006 grams (approximate) ordering information (notes 3 & 4) part number case packaging MMBD4448HW-7-F sot-323 3000/tape & reel notes: 1. no purposefully added lead. 2. diodes inc.'s "green" policy can be found on our website at http://www.diodes.com. 3. product manufactured with date code 0627 (week 27, 2006) and newer are built with green molding compound. product manufactur ed prior to date code 0627 are built with non-green molding com pound and may contain halogens or sb2o3 fire retardants. 4. for packaging details, go to our website at http://www.diodes.com. marking information date code key year 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 code l m n p r s t u v w x y z a b c month jan feb mar apr may jun jul aug sep oct nov dec code 1 2 3 4 5 6 7 8 9 o n d top view sot-323 top view internal schematic ka1= product type marking code ym = date code marking y = year (ex: n = 2002) m = month (ex: 9 = september) ka1 ym
mmbd4448hw document number: ds30228 rev. 8 - 2 2 of 4 www.diodes.com february 2011 ? diodes incorporated mmbd4448hw maximum ratings @t a = 25c unless otherwise specified characteristic symbol value unit non-repetitive peak reverse voltage v rm 100 v peak repetitive reverse voltage working peak reverse voltage dc blocking voltage v rrm v rwm v r 80 v rms reverse voltage v r ( rms ) 57 v forward continuous current (note 5) i fm 500 ma average rectified output current (note 5) i o 250 ma non-repetitive peak forward surge current @ t = 1.0 s @ t = 1.0s i fsm 4.0 1.0 a thermal characteristics characteristic symbol value unit power dissipation (note 5) p d 200 mw thermal resistance junction to ambient air (note 5) r ja 625 c/w operating and storage temperature range t j , t stg -65 to +150 c electrical characteristics @t a = 25c unless otherwise specified characteristic symbol min max unit test condition reverse breakdown voltage (note 6) v ( br ) r 80 ? v i r = 2.5 a forward voltage v f 0.62 ? ? ? 0.72 0.855 1.0 1.25 v i f = 5.0ma i f = 10ma i f = 100ma i f = 150ma peak reverse current (note 6) i r ? 100 50 30 25 na a a na v r = 70v v r = 75v, t j = 150 c v r = 25v, t j = 150 c v r = 20v total capacitance c t ? 3.5 pf v r = 6v, f = 1.0mhz reverse recovery time t r r ? 4.0 ns v r = 6v, i f = 5ma notes: 5. device mounted on fr-4 pcb, 1 inch x 0.85 inch x 0.06 2 inch; pad layout as shown on diodes inc. suggested pad layout document ap02001, which can be found on our w ebsite at http:// www.diodes.com. 6. short duration pulse test used to minimize self-heating effect. 0 50 40 80 100 150 200 250 0 120 160 200 p , p o we r dissi p a t i o n (mw) d t , ambient temperature ( c) fig. 1 power derating curve (note 5) a 10 100 1,000 1 0.1 0 1.6 1.2 0.4 0.8 i, ins t an t ane o u s f o r wa r d c u r r en t (ma) f v , instantaneous forward voltage (v) fig. 2 typical forward characteristics f
mmbd4448hw document number: ds30228 rev. 8 - 2 3 of 4 www.diodes.com february 2011 ? diodes incorporated mmbd4448hw 0.1 1 10 100 1,000 10,000 0 20 40 60 80 100 v , instantaneous reverse voltage (v) fig. 3 typical reverse characteristics r i, ins t an t ane o u s r eve r se c u r r en t (na) r 0 0.5 1.0 2.5 2.0 1.5 3.0 01020 40 30 c , t o t al c a p a c i t an c e (p f ) t v , dc reverse voltage (v) fig. 4 total capacitance vs. reverse voltage r f = 1mhz package outline dimensions suggested pad layout sot-323 dim min max typ a 0.25 0.40 0.30 b 1.15 1.35 1.30 c 2.00 2.20 2.10 d - - 0.65 g 1.20 1.40 1.30 h 1.80 2.20 2.15 j 0.0 0.10 0.05 k 0.90 1.00 1.00 l 0.25 0.40 0.30 m 0.10 0.18 0.11 0 8 - all dimensions in mm dimensions value (in mm) z 2.8 x 0.7 y 0.9 c 1.9 e 1.0 a m j l d b c h k g x e y c z
mmbd4448hw document number: ds30228 rev. 8 - 2 4 of 4 www.diodes.com february 2011 ? diodes incorporated mmbd4448hw important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this document, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose (and their equivalents under the laws of any jurisdiction). diodes incorporated and its subsidiaries rese rve the right to make modifications, enhanc ements, improvements, corrections or ot her changes without further notice to this document and any product descri bed herein. diodes incorporated does not assume any liability arising out of the application or use of this document or an y product described herein; neither does di odes incorporated convey any license under its patent or trademark rights, nor the rights of others. any customer or us er of this document or products described herein in such applica tions shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on diodes incorporated website, harmless against all damages. diodes incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthoriz ed sales channel. should customers purchase or use diodes inco rporated products for any unintended or una uthorized application, customers shall i ndemnify and hold diodes incorporated and its representativ es harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death a ssociated with such unintended or unauthorized application. products described herein may be covered by one or more united states, international or foreign patents pending. product names and markings noted herein may also be covered by one or more united states, international or foreign trademarks. life support diodes incorporated products are specifically not authorized for use as critical component s in life support devices or systems without the express written approval of the chief executive offi cer of diodes incorporated. as used herein: a. life support devices or syst ems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when proper ly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. b. a critical component is any component in a life support devic e or system whose failure to perform can be reasonably expect ed to cause the failure of the life support device or to affect its safety or effectiveness. customers represent that they have all necessary expertise in the safety and regulatory ramifi cations of their life support dev ices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-rel ated requirements concerning the ir products and any use of diodes incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or s ystems-related information or support that may be provided by diodes incorporated. further, customers must fully indemnify diodes incorporate d and its representatives against any damages arisi ng out of the use of diodes incorporated pr oducts in such safety-critical, life suppor t devices or systems. copyright ? 2011, diodes incorporated www.diodes.com
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