features rohs compliant* protects up to four i/o ports unidirectional con guration esd protection: 30 kv max. low capacitance: 15 pf applications ethernet - 10/100 base t computer i/o ports - scsi, firewire and usb set-top box protection video cards cdnbs08-srdaxx-4 series - steering diode/tvs array combo *rohs compliant *rohs directive 2002/95/ec jan. 27, 2003 including annex and rohs recast 2011/65/eu june 8, 2011. speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. general information the markets of portable communications, computing and video equipment are challenging the semiconductor industry to develop increasingly smaller electronic components. bourns offers steering diode/transient voltage suppressor array combination diodes for surge and esd protection applications in an eight lead narrow body soic package size format. bourns chip diodes conform to jedec standards, are easy to handle on standard pick and place equipment and their at con guration minimizes roll away. the bourns device will meet iec 61000-4-2 (esd), iec 61000-4-4 (eft) and iec 61000-4-5 (surge) requirements. 8765 1234 pra electrical characteristics (@ t a = 25 ? unless otherwise noted) parameter symbol cdnbs08- unit srda3.3-4 srda05-4 srda12-4 srda15-4 minimum breakdown voltage @ 1 ma v br 4.0 6.0 13.3 16.7 v working peak voltage v wm 3.3 5.0 12.0 15.0 v maximum clamping voltage v c @ i p 1 v f 8.0 9.8 19.0 24.0 v maximum clamping voltage @ 8/20 ? v c @ i pp 1 v f 10.9 v @ 43 a 13.5 v @ 42 a 25.9 v @ 27 a 30.0 v @ 17 a v maximum leakage current @ v wm i d 125 20 1 1 ? maximum cap. bidirectional @ 0 v, 1 mhz c j(sd) 15 pf esd protection per iec 61000-4-2 contact - min. contact - max. air - min. air - max. esd ? ?0 ?5 ?0 kv peak pulse power (t p = 8/20 ?) 2 p pp 500 w maximum forward voltage @ 10 ma v f 1.1 v notes: 1. see pulse waveform. 2. see peak pulse power vs. pulse time. 3. measured between pins 8 or 5 to 1, 2, 3, 4, 6 and 7. thermal characteristics (@ t a = 25 ? unless otherwise noted) parameter symbol max. unit operating temperature t j -55 to +150 ? storage temperature t stg -55 to +150 ?
speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. cdnbs08-srdaxx-4 series - steering diode/tvs array combo product dimensions this is an rohs compliant molded jedec narrow body so-8 package with 100 % sn plating on the lead frame. it weighs approximately 15 mg and has a ammability rating of ul 94v-0. recommended footprint how to order cd nbs08 - srda 3.3 - 4 common code chip diode package nbs08 = narrow body soic8 package model srda = steering/tvs diode array working peak reverse voltage 3.3 = 3.3 v rwm (volts) number of protection lines 4 = 4 lines typical part marking cdnbs08-srda3.3-4............................................................... pra cdnbs08-srda05-4................................................................ prb cdnbs08-srda12-4................................................................ prd CDNBS08-SRDA15-4................................................................ pre dimensions a 4.80 - 5.00 (0.189 - 0.197) b 3.81 - 4.00 (0.150 - 0.157) c 5.80 - 6.20 (0.228 ?0.244) d 0.36 - 0.51 (0.014 - 0.020) e 1.35 - 1.75 (0.053 - 0.069) f 0.102 - 0.203 (0.004 - 0.008) g 0.25 - 0.50 (0.010 - 0.020) h 0.51 - 1.12 (0.020 - 0.044) i 0.190 - 0.229 (0.0075 - 0.0090) j 4.60 - 5.21 (0.181 - 0.205) k 0.28 - 0.79 (0.011 - 0.031) l 1.27 (0.050) ab c d e a b c g 45 ? nom. i h d k l millimeters (inches) dimensions = e f j 7 ?nom. 3 plcs. 7 ?nom. 4 plcs. 4 ??4 dimensions a 1.143 - 1.397 (0.045 - 0.065) b 0.635 - 0.889 (0.025 - 0.035) c 6.223 min. (0.245) min. d 3.937 - 4.191 (0.155 - 0.165) e 1.016 - 1.27 (0.040 - 0.050)
cdnbs08-srdaxx-4 series - steering diode/tvs array combo speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. 10,000 1,000 100 10 1 0.01 10 100 10,000 1,000 p pp ?peak pulse power (w) t d ?pulse duration (?) 20 40 60 80 100 120 0 030 25 20 15 10 5 i pp ?peak pulse current (% of i pp ) t ?time (?) test waveform parameters t t = 8 ? t d = 20 ? 500 w, 8/20 ? waveform t t e t t d = t | i pp /2 performance graphs peak pulse power vs pulse time pulse waveform block diagram device pinout power derating curve 0 20 40 60 80 100 0 25 50 75 100 125 150 % of rated power t l ?lead temperature (?) average power peak pulse power 8/20 ? 8765 1234 pin function 1 i/o 1 2 +v ref 3 +v ref 4 i/o 2 5 gnd 6 i/o 3 7 i/o 4 8 gnd
cdnbs08-srdaxx-4 series - steering diode/tvs array combo packaging information the product is packaged in tape and reel format per eia-481 standard. dimensions: mm (inches) item symbol nsoic 8l carrier width a 6.7 0.10 (0.264 0.004) carrier length b 5.5 0.10 (0.217 0.004) carrier depth c 2.10 0.10 (0.083 0.004) sprocket hole d 1.55 0.05 (0.061 0.002) reel outside diameter d 330 (12.992) reel inner diameter d 1 80.0 (3.1500) min. feed hole diameter d 2 13.0 0.20 (0.512 0.008) sprocket hole position e 1.75 0.10 (0.069 0.004) punch hole position f 3.50 0.05 (0.138 0.002) punch hole pitch p 8.00 0.10 (0.315 0.004) sprocket hole pitch p 0 4.00 0.10 (0.157 0.004) embossment center p 1 2.00 0.05 (0.079 0.002) overall tape thickness t 0.20 0.10 (0.008 0.004) tape width w 12.00 0.20 (0.472 0.008) reel width w 1 18.4 (0.724) max. quantity per reel -- 2500 rev. 12/12 asia-paci c: tel: +886-2 2562-4117 fax: +886-2 2562-4116 europe: tel: +41-41 768 5555 fax: +41-41 768 5510 the americas: tel: +1-951 781-5500 fax: +1-951 781-5700 www.bourns.com speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. ....... ....... ....... ....... ....... ....... ....... ....... p a f e t 120 d 2 d d 1 w 1 c index hole part orientation p 0 p 1 w b 10 pitches (min.) direction of feed 10 pitches (min.) end trailer device leader start d pin 1
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