- 568 - sac series low capacitance transient voltage suppressor diodes voltage range 5.0 to 50 volts 500 watts peak power 1.0 watt steady state features plastic package has underwriters laboratory flammability classification 94v-0 500w surge capability at 10 x 1000us waveform, duty cycle: 0.01% excellent clamping capability low incremental surge resistance fast response time: typically less than 1.0ps from 0 volts to vbr for unidirectional and 5.0 ns for bidirectional high temperature soldering guaranteed: 260 o c / 10 seconds / .375?,(9.5mm) lead length / 5lbs.,(2.3kg) tension idel for data line applications maximum junction capacitance at o volts is 50 pf mechanical data case: jedec do-15 molded plastic over a passicated junction lead: axial leads, solderable per mil-std- 750, method 2026 polarity: color band denotes cathode except bipolar weight: 0. 4 gram, 0.015 ounce do-15 dimensions in inches and (millimeters) maximum ratings and electrical characteristics rating at 25 ambient temperature unless otherwise specified. type number symbol value units peak power dissipation at t a =25 o c, tp=1ms (note 1) p pk minimum 500 watts steady state power dissipation at t l =75 o c lead lengths .375?, 9.5mm p d 3.0 watts operating and storage temperature range t j , t stg -55 to + 175 o c note: non-repetitive current pulse per fi g . 3 and derated above t a =25 o c per fi g . 2.
- 569 - schematic diode translent voltage suppressor low capacitance tvs electrical characteristics (ta=25 o c unless otherwise noted) test stand-off maximum maximum maximum maximum device current voltage reverse leaka ge peak pulse clamping temperature (volts) (note 1) @it vwm at vwm current ippm voltage at ippm coefficient min max (ma) (volts) id (ua) (note 2)(amps) vc(volts) of vbr mv / o c) sac5.0 7.60 9.21 1.0 5.0 300 44 10.00 50 sac6.0 7.90 9.51 1.0 6.0 300 41 11.2 50 sac7.0 8.33 10.2 1.0 7.0 300 38 12.6 50 sac8.0 8.89 10.9 1.0 8.0 100 36 13.4 50 sac8.5 9.44 11.5 1.0 8.5 50 34 14.0 50 sac10 11.10 13.6 1.0 10 5.0 29 16.3 50 sac12 13.30 16.3 1.0 12 5.0 25 19.0 50 sac15 16.70 20.4 1.0 15 5.0 20 23.6 50 sac18 20.00 24.4 1.0 18 5.0 15 28.8 50 sac22 24.40 29.8 1.0 22 5.0 14 35.4 50 sac26 28.90 35.3 1.0 26 5.0 11.1 42.3 50 sac30 33.30 40.7 1.0 30 5.0 10.0 48.6 50 sac36 40.00 48.9 1.0 36 5.0 8.6 60.0 50 sac45 50.00 61.1 1.0 45 5.0 6.8 77.0 50 sac50 55.50 68.3 1.0 50 5.0 5.8 88.0 50 note: there are a suffix for types sac 5.0 th ru type sac 50. "a" : + / - 5% tolerance. notes: 1. 2. device must be used with two units in parallel, opposite in polarity as shown in circuit for ac signal line protection breakdown voltage vbr
- 570 - characteristics and application sac is a transient voltage suppressor diode in series with a compensation diode for low capacitance. transient voltage suppressors may be used at various points in a circuit to provide various degrees of protection. transient voltage suppressor provides excellent clamping capability. since the low incremental surge resistance. for telecommumication : multi-protocol serial transceivers. please refer as below: -) cellular -) universal series bus (usb) port production. -) instrumentation. -) lan / wan equipment. -) peripherals. -) high speed data lines. tow devices are used in parallel and opposite polarity for protecting one bi-directional ines (fig. 1), or with a steeling diode for protecting one unidirectional (fig. 2). the low capacitance tvs series are used on high speeded interfaces such as video line, i 2 c rs-485, rs-422 and usb, for esd protection the lines which have signal, or data. please refer as below: 1). token ring 2). i 2 c fig. 1 fig. 2 3). video line 4). set top box i/o 5). lan / wan equipment. 6). security system 7). automatic teller machine 8). hfc system 9). networks device must be used with two units i n para ll e l , oppos it e i n po l ar ity as s h own in circuit for ac si g nal line protection low capacitance tvs low capacitance tvs
- 571 - ratings and characteristic curves (sac series) fig.2- pulse derating curve percemt age of ra ted power (%) 0 50 100 150 175 0 25 50 75 100 t lead temperature( c) l , o fig.3- pulse waveform i -peak pulse current ,%i ppm psm 0 0 1.0 2.0 3.0 4.0 100 150 50 t time (ms) t =25 c pulse width (td) is defined sa the point where the peak current decays to 50% of l j 0 ppm td tr=10 sec. 10/1000 sec. waveform as defined by r.e.a. peak value l ppm half value - ipp l ppm 2 fig.1- peak pulse power rating curve p , peak pulse power (kw) ppm 0.1 s 100 s 1.0ms 10ms 10 s 1.0 s 0.1 30 10 1.0 tp, pulse width, (sec.) non-repetitive pulse waveform shown in fig.3 t =25 c a 0 impulse exponential decay half sine square current waveform td td p pk p pk p pk". 5 tld td=7tp average power peak power (single pulse)
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