SMA5921B thru SMA5945B SURFACE MOUNT ZENER TYPE SURFACE MOUNT ZENER DIODES 1.5 WATTS SMA/DO-214AC .050 (1.27) .064(1.63) .087(2.20) .115(2.92) .157(4.00) .181(4.60) .006(0.15 . ) .012(0.31) .067(1.70) . ) .103(2.62 .030(0.76) .060(1.52) .004(.1 0 ) .009(.20 ) .176(4.48) .220(5.59) Dimensions in inches and (millimeters) FEATURES MECHANICAL DATA * Case: Molded plastic SMA/DO-214AC method 2026 * 1.5W Power Dissipation * Epoxy: UL 94V-0 rate flame retardant * For Surface Mounted Applications * Terminals: Solderable per MIL-STD-750 * Zener Breakdown Voltage Range 6.8V to 68V * Polarity: cathode band * Mounting position: Any * Weight: 0.064 gram MAXIMUM RATINGS (at TA=25 C unless otherwise noted) o Symbol Value Unit Half sine-wave superimposed on rated load (JEDEC method) IFSM 10 A Power Dissipation2 PD 1.5 W Maximun junction Temperature Tj 150 °C T STG -55 to +150 °C Characteristics 1 Storage Temperature Range 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. www.paceleader.tw 1 SMA5921B thru SMA5945B SURFACE MOUNT ZENER TYPE SURFACE MOUNT ZENER DIODES 1.5 WATTS ELECTRICAL CHARACTERISTICS (at TA=25 C unless otherwise noted) o ( mA ) (μA) (V) Surge Current ( mA ) 200 1.0 2.5 5.2 221 3.0 400 0.5 2.5 6.0 200 45.7 3.5 400 0.5 2.5 6.5 183 9.1 41.2 4.0 500 0.5 2.5 7.0 165 SMA5925B 10 37.5 4.5 500 0.25 2.5 8.0 150 SMA5926B 11 34.1 5.5 550 0.25 2.5 8.4 136 SMA5927B 12 31.2 6.5 550 0.25 0.5 9.1 125 SMA5928B 13 28.8 7.0 550 0.25 0.5 9.9 115 SMA5929B 15 25.0 9.0 600 0.25 0.5 11.4 100 SMA5930B 16 23.4 10 600 0.25 0.5 12.2 94 SMA5931B 18 20.8 12 650 0.25 0.5 13.7 83 SMA5932B 20 18.7 14 650 0.25 0.5 15.2 75 SMA5933B 22 17.0 17.5 650 0.25 0.5 16.7 68 SMA5934B 24 15.6 19 700 0.25 0.5 18.2 63 SMA5935B 27 13.9 23 700 0.25 0.5 20.6 56 SMA5936B 30 12.5 26 750 0.25 0.5 22.8 50 SMA5937B 33 11.4 33 800 0.25 0.5 25.1 45 SMA5938B 36 10.4 38 850 0.25 0.5 27.4 42 SMA5939B 39 9.6 45 900 0.25 0.5 29.7 38 SMA5940B 43 8.7 53 950 0.25 0.5 32.7 35 SMA5941B 47 8.0 67 1000 0.25 0.5 35.8 32 SMA5942B 51 7.3 70 1100 0.25 0.5 38.8 29 SMA5943B 56 6.7 86 1300 0.25 0.5 42.6 27 SMA5944B 62 6.0 100 1500 0.25 0.5 47.1 24 SMA5945B 68 5.5 120 1700 0.25 0.5 51.7 22 Electrical Characteristic (Ta=25°C) Part No. Vz IzT ZZK (V) ( mA ) ZZT (Ω) SMA5921B 6.8 55.1 2.5 SMA5922B 7.5 50.0 SMA5923B 8.2 SMA5924B (Ω) Suffix B for 5% www.paceleader.tw 2 IZK IR @ VR SMA5921B thru SMA5945B SURFACE MOUNT ZENER TYPE SURFACE MOUNT ZENER DIODES 1.5 WATTS VZ, TEMPERATURE COEFFICIENT (mV/°C) 5 4 1.5 1.0 0.5 0 25 0 50 75 125 100 150 8 VZ@IZT 6 4 2 0 -2 -4 175 3 6 5 4 VZ,ZENERVOLTAGE(VOLTS) FIG 1. STEADY STATE POWERDERATING FIG 2. ZENER VOLTAGE-TO 12 VOLTS 120 1000 VZ@IZT 100 80 60 40 20 0 0 11 10 9 8 7 TL,LEADTEMPERATURE(°C) ZZ, DYNAMIC IMPEDANCE (OHMS) VZ, TEMPERATURE COEFFICIENT (mV/°C) PD, MAXIMUM POWER DISSIPATION (WATTS) Typical Characteristics 20 60 40 80 TJ - 25°C IZ(ms) = 0.1 IZ(dc) VZ = 150V 100 91V 62V 10 22V 12V 6.8V 1 100 120 140 160 180 200 0.5 VZ, ZENERVOLTAGE(VOLTS) 100 100 1.0 1 IZ , ZENER TEST CURRENT (mA) FIG 4. EFFECT OF ZENER CURRENT FIG 3. ZENER VOLTAGE-10 TO 12 VOLTS PPK, PEAK SURGE POWER (watts) ZZ, DYNAMIC IMPEDANCE (ohms) 1K 200 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 50 100 100 100 IZ, ZENER CURRENT (mA) IZ, ZENER CURRENT (mA) 20 Fig 6.VZ=12 THRU 82 VOLTS Fig 5. VZ = 6.8 THRU10VOLTS 5 3 2 1 0.5 0.3 0.2 0.1 0 2 3 5 1 5 PW, PULSE WIDTH (ms) VZ, ZENER VOLTAGE (VOLTS) 50 30 20 10 0 1 2 3 4 5 6 7 8 9 Fig.7 VZ, ZENER VOLTAGE (VOLTS) www.paceleader.tw 50 30 20 10 5 3 2 1 0.5 0.3 0.2 0.1 10 0 10 20 30 40 50 60 70 80 90 100 Fig.8 VZ, ZENER VOLTAGE (VOLTS) 3 12