dimensions in inches and (millimeters) maximum ratings and electrical characteristics rating at 25 o c ambient temperature unless otherwise specified. sma/do-214ac 1.5 watts ? weight: 0.064 gram f e a t u r e s ? for surface mounted applications ? case: molded plastic sma/do-214ac ? epoxy: ul 94v-0 rate flame retardant ? terminals: solderable per mil-std-750 method 2026 processes ? ideally suited for automated assembly ? polarity: cathode band ? mounting position: any mechanical data ? 1.5 w power dissipation notes : power dissipation (note 1) value 1.5 10 -55 to +150 symbol p d i fsm t j , t stg unit w o c operating junction and storage t e m p e r a t u r e a half sine-w a v e s u p e r i m p o s e d o n r a t e d l o a d (note 2) ( j e d e c m e t h o d) r a n ge (1) mounted on 5.0mm 2 (.013mm thick) land areas. (2) measurd on 8.3ms, single half-sine wave or equivalent square wave, duty cycle = 4 pulses per minute maximum. .157(4.00) .181(4.60) .006(.152) .012(.305) .098(2.50) .114(2.90) .055(1.40) .062(1.60) .078(2.00) .096(2.44) .188(4.80) .208(5.28) .030(0.76) .060(1.52) .002(.051) .008(.203) data sheet surface mount zener diode mechanical dimensions description 1sma5921b~5945b
surge part no. vz iz t z zt z zk i zk current ( v ) ( ma ) (ohm) (ohm) ( ma ) v r (v) ( ma ) 1sma5921 b 6.8 55.1 2.5 200 1.0 2.5 5.2 221 1sma5922b 7.5 50.0 3.0 400 0.5 2.5 6.0 200 1sma5923b 8.2 45.7 3.5 400 0.5 2.5 6.5 183 1sma5924b 9.1 41.2 4.0 500 0.5 2.5 7.0 165 1sma5925b 10 37.5 4.5 500 0.25 2.5 8.0 150 1sma5926b 11 34.1 5.5 550 0.25 2.5 8.4 136 1SMA5927B 12 31.2 6.5 550 0.25 0.5 9.1 125 1sma5928b 13 28.8 7.0 550 0.25 0.5 9.9 115 1sma5929b 15 25.0 9.0 600 0.25 0.5 11.4 100 1sma5930b 16 23.4 10 600 0.25 0.5 12.2 94 1sma5931b 18 20.8 12 650 0.25 0.5 13.7 83 1sma5932b 20 18.7 14 650 0.25 0.5 15.2 75 1sma5933b 22 17.0 17.5 650 0.25 0.5 16.7 68 1sma5934b 24 15.6 19 700 0.25 0.5 18.2 63 1sma5935b 27 13.9 23 700 0.25 0.5 20.6 56 1sma5936b 30 12.5 26 750 0.25 0.5 22.8 50 1sma5937b 33 11.4 33 800 0.25 0.5 25.1 45 1sma5938b 36 10.4 38 850 0.25 0.5 27.4 42 1sma5939b 39 9.6 45 900 0.25 0.5 29.7 38 1sma5940b 43 8.7 53 950 0.25 0.5 32.7 35 1sma5941b 47 8.0 67 1000 0.25 0.5 35.8 32 1sma5942b 51 7.3 70 1100 0.25 0.5 38.8 29 1sma5943b 56 6.7 86 1300 0.25 0.5 42.6 27 1sma5944b 62 6.0 100 1500 0.25 0.5 47.1 24 1sma5945b 68 5.5 120 1700 0.25 0.5 51.7 22 1sma5921b thru sma5945b electrical characteristic (ta=25 o c) ir(ua) max. suffix b for 5%, suffix "a" for 10% p d , maximum power dissipation (watts) v z , temperature coefficient (mv/c) 0 25 75 125 50 100 150 175 4 5 1.5 1.0 0.5 0 t l ,leadtemperature(c) fig 1. steady state powerderating -4 -2 0 2 6 8 4 3 4 5 6 7 8 9 10 11 12 v z ,zenervoltage(volts) fig 2. zener voltage-to 12 volts vz@izt 1.5 wa tt s data shee t s u rf ac e m ou nt z e ner d io de
fig 3. zener voltage-10 to 12 volts v z , temperature coefficient (mv/c) 0 20 60 40 80 100 120 140 160 180 200 120 100 60 80 20 40 0 v z , zenervoltage(volts) vz@izt 1 10 100 1000 0.5 1 1.0 100 100 fig 4. effect of zener current i z , zener test current (ma) t j - 25c iz( m s ) = 0 . 1 iz( d c ) v z = 150v 91v 62v 22v 12v 6. 8 v zz, dynamic impedance (ohms) 20 0 10 0 70 50 30 20 10 7 5 3 2 5 7 10 2 0 30 50 7 0 10 0 10ma 20ma 1k 500 300 200 100 50 30 20 10 0.1 0.2 0.3 5 1 2 3 5 0 20 50 100 100 50 30 20 10 5 3 2 1 0.5 0.3 0.2 0.1 0 1 2 3 4 5 6 7 8 9 10 100 50 30 20 10 5 3 2 1 0.5 0.3 0.2 0.1 0 10 20 30 40 50 60 70 80 90 100 vz, zener voltage (volts) vz, zener voltage (volts) p w , pulse width (ms) vz, zener voltage (volts) fig 5. vz = 6.8 thru10volts fig 6.vz=12 thru 82 volts zz, dynamic impedance (ohms) iz, zener current (ma) iz, zener current (ma) ppk, peak surge power (watts) iz(dc) =1ma iz(ms) = 0.1iz(dc) rectangular nonrepetitive waveform tj = 25oc prior to initial pulse 1.5 watts data sheet surface mount zener diode
|
