8700 E. Thomas Road Scottsdale, AZ 85252 Phone: (480) 941-6300 Fax: (480) 947-1503 MLL746A,-1 thru MLL759A,-1 and MLL4370A,-1 thru MLL4372A,-1 ±1% and ±2% Versions “C” and “D” Available Features • • • • • • Leadless Package For Surface Mount Technology Ideal For High Density Mounting Voltage Range 2.4 To 12 Volts Hermetically Sealed, Double Slug Glass Construction Metallurgically Bonded Construction Available as Dash One. Available in JAN, JTX, JTXV-1 To Mil-PRF-19500/127 (UR-1 Suffix) LEADLESS GLASS ZENER DIODE SURFACE MOUNT Maximum Ratings 500 mW DC Power Dissipation (See Power Derating Curve In Figure 1) -55°C to +175°C Operating and Storage Junction Temperature Package Dimensions In Inches Application This surface mountable zener diode series is similar to the 1N746 thru 1N759 in the DO-35 equivalent package except that it meets the new JEDEC surface mount outline DO-213AA. It is an ideal selection for applications of high density and low parasitic requirements. Due to its glass hermetic qualities, it may also be considered for high reliability applications. Electrical Characteristics @ 25°C MICROSEMI PART NUMBER MAXIMUM ZENER IMPEDANC E ZZT @ IZT (NOTE 2) TYPICAL TEMP COEFF. OF ZENER VOLTAGE NOMINAL ZENER VOLTAGE VZ @ IzT (NOTE 1) ZENER TEST CURRENT IzT VOLTS mA OHMS µA µA mA %/°°C MLL4370A MLL4371A MLL4372A 2.4 2.7 3.0 20 20 20 30 30 29 100 75 50 200 150 100 150 135 120 - .085 - .080 - .075 MLL746A MLL747A MLL748A MLL749A MLL750A MLL751A MLL752A MLL753A MLL754A MLL755A MLL756A MLL757A MLL758A MLL759A 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.5 8.2 9.1 10.0 12.0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 28 24 23 22 19 17 11 7 5 6 8 10 17 30 10 10 10 2 2 1 1 .1 .1 .1 .1 .1 .1 .1 30 30 30 30 30 20 20 20 20 20 20 20 20 20 110 100 95 85 75 70 65 60 55 50 45 40 35 30 - .066 - .058 - .046 - .033 - .015 ±.010 +.030 +.049 +.053 +.057 +.060 +.061 +.062 +.062 ** MAXIMUM REVERSE CURRENT @ VR = 1 VOLT @25°°C @ +150°°C MAXIMUM ZENER CURRENT IZM (NOTE 4) αVZ Note 1 Voltage measurements to be performed 20 seconds after application of dc test current. Note 2 Zener impedance derived by superimposing on IZT at 60 Hz rms ac current equal to 10% IZT (2 mA ac). Note 3 Allowance has been made for the increase in VZ due to ZZ and for the increase in junction temperature as the unit approaches thermal equilibrium at the power dissipation at 500 mW. ** Ordering Information: 1) Commercial: MLL746A thru MLL759A or MLL746A-1 thru MLL759A-1 MLL4370A thru MLL4372A or MLL4370A-1 thru MLL4372A-1 2) Military: JAN, JANTX, or JANTXV 1Nxxxx UR-1 3) Tight tolerance "C" suffix = ±2%, "D" suffix = ±1% MSC0291.PDF 04-20-00 DIM A B U MILLIMETERS MIN MAX 3.30 3.70 1.60 1.70 0.41 0.55 INCHES MIN .130 .063 .016 MAX .146 .067 .022 DO-213AA Mechanical Characteristics Case: Hermetically sealed glass with solder contact tabs at each end. Finish: All external surfaces are corrosion resistant, readily solderable. Polarity: Banded end is cathode. Thermal Resistance: 100°C/Watt Maximum junction to end caps for "-1" construction and 150°C/W maximum junction to end caps for commercial. Mounting Position: Any Weight: 0.04 gm MLL746A,-1 thru MLL759A,-1 and MLL4370A,-1 thru MLL4372A,-1 ±1% and ±2% Versions “C” and “D” Available STEADY STATE POWER DERATING ZENER IMPEDANCE (Ohms) 1.4 PD = Power Dissipation 1.2 1.0 0.8 Dash 1 Metalurgically Bonded 0.6 0.4 Non-Dash 1 0.2 0 0 20 40 60 80 100 120 140 160 180 200 T E C End Cap Case Temperature (ºC) ZENER CURRENT (mA) FIGURE 1 FIGURE 2 ZENER IMPEDANCE VS ZENER CURRENT (TYPICAL) CAPACITANCE vs VZ CURVE TYPICAL CAPACITANCE IN PICOFARADS 300 200 100 90 80 70 60 50 40 30 20 At Zero Volts 10 9 8 7 6 5 4 3 At - 2 Volts (VR ) 2 1 0 20 40 60 80 100 120 140 160 180 200 220 ZENER VOLTAGE VZ FIGURE 3 CAPACITANCE VS ZENER VOLTAGE (TYPICAL) MSC0291.PDF 04-20-00