1SMA5921B~5945B Data Sheet 1.5 WATTS Surface Mount Zener Diode Mechanical Dimensions Description .055(1.40) .062(1.60) .098(2.50) .114(2.90) .157(4.00) .181(4.60) .006(.152) .012(.305) .078(2.00) .096(2.44) .030(0.76) .060(1.52) .002(.051) .008(.203) .188(4.80) .208(5.28) Dimensions in inches and (millimeters) SMA/DO-214AC Features ¬ For surface mounted applications ¬ 1.5 W power dissipation ¬ Ideally suited for automated assembly processes Mechanical Data ¬ Case: Molded plastic SMA/DO-214AC ¬ Epoxy: UL 94V-0 rate flame retardant ¬ Terminals: Solderable per MIL-STD-750 method 2026 ¬ Polarity: cathode band ¬ Mounting position: Any ¬ Weight: 0.064 gram MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS o Rating at 25 C ambient temperature unless otherwise specified. Power Dissipation (Note 1) Half sine-wave superimposed on rated load (Note 2) (JEDEC method) Operating junction and Storage Temperature Range NOTES : 2 SYMBOL VALUE UNIT PD 1.5 W IFSM 10 A TJ, TSTG -55 to +150 (1) Mounted on 5.0mm (.013mm thick) land areas. (2) Measurd on 8.3ms, single half-sine wave or equivalent square wave, duty cycle = 4 pulses per minute maximum. o C 1.5 WATTS Surface Mount Zener Diode Data Sheet 1SMA5921B THRU SMA5945B o Part No. Vz (V) Electrical Characteristic (Ta=25 C) IR(uA) Max. IzT ZZT ZZK IZK ( mA ) (Ohm) (Ohm) ( mA ) VR(V) Surge Current ( mA ) 1SMA5921B 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 Suffix B for 5%, Suffix "A" for 10% FIG 2. ZENER VOLTAGE-TO 12 VOLTS VZ, TEMPERATURE COEFFICIENT (mV/°C) PD, MAXIMUM POWER DISSIPATION (WATTS) FIG 1. STEADY STATE POWERDERATING 5 4 1.5 1.0 0.5 0 0 25 50 75 100 125 TL,LEADTEMPERATURE(°C) 150 175 8 VZ@IZT 6 4 2 0 -2 -4 3 4 5 6 7 8 9 10 VZ,ZENERVOLTAGE(VOLTS) 11 12 1.5 WATTS Surface Mount Zener Diode Data Sheet FIG 4. EFFECT OF ZENER CURRENT 120 ZZ, DYNAMIC IMPEDANCE (OHMS) 1000 VZ@IZT 100 80 60 40 20 0 0 20 40 60 80 100 120 140 160 180 200 TJ - 25°C IZ(ms) = 0.1 IZ(dc) VZ = 150V 100 91V 62V 10 22V 12V 6.8V 1 0.5 1 1.0 VZ, ZENERVOLTAGE(VOLTS) 100 100 IZ , ZENER TEST CURRENT (mA) 200 PPK, PEAK SURGE POWER (watts) 1K ZZ, DYNAMIC IMPEDANCE (ohms) Iz(dc) =1mA 100 70 50 30 20 10mA 10 7 5 3 20mA 2 5 7 Iz(ms) = 0.1Iz(dc) 10 20 30 50 70 RECTANGULAR NONREPETITIVE WAVEFORM TJ = 25oC PRIOR TO INITIAL PULSE 500 300 200 100 50 30 20 10 0.1 0.2 0.3 100 VZ, ZENER VOLTAGE (VOLTS) 5 1 2 3 5 0 20 50 PW, PULSE WIDTH (ms) Fig 6.VZ=12 THRU 82 VOLTS Fig 5. VZ = 6.8 THRU10VOLTS 100 100 50 30 20 IZ, ZENER CURRENT (mA) IZ, ZENER CURRENT (mA) VZ, TEMPERATURE COEFFICIENT (mV/°C) FIG 3. ZENER VOLTAGE-10 TO 12 VOLTS 10 5 3 2 1 0.5 0.3 0.2 50 30 20 10 5 3 2 1 0.5 0.3 0.2 0.1 0.1 0 1 2 3 4 5 6 7 8 9 10 VZ, ZENER VOLTAGE (VOLTS) 0 10 20 30 40 50 60 70 80 90 100 VZ, ZENER VOLTAGE (VOLTS) 100