SMA5925B

SMA5921B series Surface Mount Zener Diodes P b Lead(Pb)-Free Features: * 1.5W Power Dissipation * For Surface Mounted Applications * Zener Breakdown Voltage Range 6.8V to 68V 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 SURFACE MOUNT ZENER DIODES 1.5 WATTS SMA SMA Outline Dimension B unit:mm SMA A D J G H E C Dim A B C D E G H J Min 2.20 4.00 1.27 0.15 4.48 0.10 0.76 1.70 Max 2.92 4.60 1.63 0.31 5.59 0.20 1.52 2.62 WEITRON http://www.weitron.com.tw 1/3 23-Oct-06 SMA5921B series Maximum Ratings (TA=25 C Unless Otherwise Noted) Characteristics Half sine-wave superimposed on rated load (JEDEC method) 1 Symbol IFSM Value 10 1.5 150 -55 to +150 Unit A W °C °C Power Dissipation2 Maximun junction Temperature Storage Temperature Range PD Tj T STG NOTES : (1) Measurd on 8.3ms, single half-sine wave or equivalent square wave, duty cycle = 4 pulses per minute maximum. (2) Mounted on 5.0mm2(.013mm thick) land areas. Electrical Characteristic (Ta=25°C) Part No. SMA5921B SMA5922B SMA5923B SMA5924B SMA5925B SMA5926B SMA5927B SMA5928B SMA5929B SMA5930B SMA5931B SMA5932B SMA5933B SMA5934B SMA5935B SMA5936B SMA5937B SMA5938B SMA5939B SMA5940B SMA5941B SMA5942B SMA5943B SMA5944B SMA5945B Vz (V) 6.8 7.5 8.2 9.1 10 11 12 13 15 16 18 20 22 24 27 30 33 36 39 43 47 51 56 62 68 ( mA ) 55.1 50.0 45.7 41.2 37.5 34.1 31.2 28.8 25.0 23.4 20.8 18.7 17.0 15.6 13.9 12.5 11.4 10.4 9.6 8.7 8.0 7.3 6.7 6.0 5.5 IzT ZZT (Ω) 2.5 3.0 3.5 4.0 4.5 5.5 6.5 7.0 9.0 10 12 14 17.5 19 23 26 33 38 45 53 67 70 86 100 120 ZZK (Ω) 200 400 400 500 500 550 550 550 600 600 650 650 650 700 700 750 800 850 900 950 1000 1100 1300 1500 1700 ( mA ) 1.0 0.5 0.5 0.5 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 IZK (μA) 2.5 2.5 2.5 2.5 2.5 2.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 IR ＠ VR (V) 5.2 6.0 6.5 7.0 8.0 8.4 9.1 9.9 Surge Current ( mA ) 221 200 183 165 150 136 125 115 100 94 83 75 68 63 56 50 45 42 38 35 32 29 27 24 22 11.4 12.2 13.7 15.2 16.7 18.2 20.6 22.8 25.1 27.4 29.7 32.7 35.8 38.8 42.6 47.1 51.7 Suffix B for 5% http: // w w w . w e i tro n. c o m. tw WEITRON 2/3 23-Oct-06 SMA5921B series Typical Characteristics PD, MAXIMUM POWER DISSIPATION (WATTS) VZ, TEMPERATURE COEFFICIENT (mV/°C) 5 4 1.5 1.0 0.5 0 8 6 4 2 0 -2 -4 3 VZ@IZT 0 25 50 75 100 125 150 175 4 5 6 7 8 9 10 11 12 TL,LEADTEMPERATURE(°C) VZ,ZENERVOLTAGE(VOLTS) FIG 1. STEADY STATE POWERDERATING VZ, TEMPERATURE COEFFICIENT (mV/°C) FIG 2. ZENER VOLTAGE-TO 12 VOLTS 1000 TJ - 25°C IZ(ms ) = 0. 1 IZ(d c) VZ = 150V 120 100 80 60 40 20 0 VZ@IZT ZZ, DYNAMIC IMPEDANCE (OHMS) 100 91V 62V 10 22V 12V 0 20 40 60 80 100 120 140 160 180 200 1 0.5 1 1.0 100 6. 8V 100 VZ, ZENERVOLTAGE(VOLTS) IZ , ZENER TEST CURRENT (mA) FIG 3. ZENER VOLTAGE-10 TO 12 VOLTS 1K 200 100 70 50 30 20 10mA 10 7 5 3 FIG 4. EFFECT OF ZENER CURRENT PPK, PEAK SURGE POWER (watts) RECTANGULAR NONREPETITIVE WAVEFORM TJ = 25oC PRIOR TO INITIAL PULSE ZZ, DYNAMIC IMPEDANCE (ohms) Iz(dc) =1mA 500 300 200 100 50 30 20 10 0.1 0.2 0.3 5 2 20mA 7 10 20 30 Iz(ms) = 0.1Iz(dc) 50 70 100 5 1 235 0 20 50 100 Fig 5. VZ = 6.8 THRU10VOLTS 100 IZ, ZENER CURRENT (mA) IZ, ZENER CURRENT (mA) 100 50 30 20 10 5 3 2 1 0.5 0.3 0.2 0.1 0 VZ, ZENER VOLTAGE (VOLTS) Fig 6.VZ=12 THRU 82 VOLTS PW, PULSE WIDTH (ms) 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 10 20 30 40 50 60 70 80 90 100 Fig.7 VZ, ZENER VOLTAGE (VOLTS) Fig.8 VZ, ZENER VOLTAGE (VOLTS) WEITRON http://www.weitron.com.tw 3/3 23-Oct-06