msc0922.pdf transient voltage suppressors features: high surge capacity for transient protection in low voltage circuits triple layer passivation subminiature voidless hermetically sealed glass package voltage and reverse leakage lowest available* available in both axial lead and surface mount packages description: these transient voltage suppressors (tvs's) feature the ability to clamp dangerous high voltage short term transients including direct or radiated electro-static-discharge (esd) events before entering sensitive low voltage component regions of a circuit design. they are small efficient tvs's designed for very low operating voltage with low leakage requirements. they are also rated with the lowest tvs clamping voltage in the industry. for extremely short duration esd events with extremely fast rise times, the surface mount device option provides minimal parasitic inductance for corresponding minimum transient voltage overshoot (ldi/dt) effects. maximum ratings: operating temperature: -65 c to +175 c. storage temperature: -65 c to +175 c. surge power : 300w at 10/1000 m s or 2000w at 8/20 m s. * dc power : 1.5w for t l = 25 c at 0.375 inch lead length. electrical characteristics: * consult factory for higher rated surge power with comparable low voltage and low leakage ratings ** maximum peak pulse current at 10/1000 m s 2830 s. fairview street santa ana, ca 92704 phone: (714) 979-8220 fax: (71 4) 559-5989 maximum leakage current maximum clamping voltage type number break down voltage v( br ) min test current i t working peak voltage v wm i d v c maximum peak pulse current (i pp )** maximum temp coef. of v (br) a v(br) pkg. a vdc madc vdc m adc v(pk) a(pk) % / c tvsp3k2.7 4.0 62 2.7 1500 5.7 53.0 +0 / -.06 tvsp3k3.0 4.3 58 3.0 1500 6.0 50.0 +0 / -.05 tvsp3k3.3 4.6 53 3.3 700 6.5 46.1 .025 tvsp3k4.0 5.0 49 4.0 100 7.1 42.2 .030 tvsp3k4.5 5.4 45 4.5 30 8.0 37.5 .040 tvsp3k5.0 5.9 40 5.0 5 9.2 32.6 + 050 ?.030.002 dia (.78) mechanical characteristics axial leaded devices case: voidless hermetically sealed hard glass. lead materials: solder dipped copper. marking: body painted, alpha numeric. polarity: cathode band. surface mount devices case: voidless hermetically sealed hard glass. end cap material: solid silver. end cap configuration: square. polarity: cathode dot or band on body. tvsp3k2.7 thru tvsp3k5.0 tvsp3k2.7sm thru tvsp3k5.0sm tvsp3k2.7 thru tvsp3k5.0 and tvsp3k2.7sm inch mm min. max. min. max. a 0.185 0.200 4.699 5.080 b 0.019 0.028 0.483 0.711 c 0.003 ---- 0.076 ---- d 0.097 0.103 2.464 2.616 figure 1b package a surface mount figure 1a package a axial
msc0922.pdf transient voltage suppressors test wave form parameters t r = 10sec t p = 1000sec 100 0 50 1 2 3 t r peak value i pp half value i pp 2 1 0 / 1000 wave form as defined by r.e.a i pp - peak pulse current - % i pp t - time - msec figure 2 current impulse wave form 40 test wave form parameters t r = 8sec t p = 20sec 100 0 50 10 20 30 peak value i pp half value i pp = t p 2 8/20 wave form 50 i pp - peak pulse current - % i pp t - time - m s figure 3 current impulse wave form 100% 0 75 100 50 50 25 150 175 p pp dc power peak pulse power (p pp ) or dc power in percent of 25 c rating t - temperature - c figure 4 derating curve 100 0.1 10 1.0 100ns 1s 10s 100s 1ms 10ms tp pulse time figure 1 peal pulse power versus pulse time p pp peak pulse power kw (wave form - see figure 2) non-repetitive
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