1N746 thru 1N759A, e3 and 1N4370 thru 1N4372A, e3 DO-7 Silicon 500 mW Zener Diodes SCOTTSDALE DIVISION APPEARANCE The popular 1N746 thru 1N759A series of 0.5 watt Zener Voltage Regulators provides a selection from 2.4 to 12 volts in standard 5% or 10% tolerances as well as tighter tolerances identified by different suffix letters on the part number. The DO-7 packaging option offers a "straight-through" soldered internal connection with a larger active die element than otherwise provided in the smaller DO-35 package when needed. It is also available as a RoHS Compliant option by adding an "e3" suffix. Microsemi also offers numerous other Zener products to meet higher and lower power applications. DO-7 (DO-204AA) WWW . Microsemi .C OM DESCRIPTION IMPORTANT: For the most current data, consult MICROSEMI's website: http://www.microsemi.com FEATURES APPLICATIONS / BENEFITS * JEDEC registered 1N746 thru 1N759A series * Internally solder bonded * Options for screening in accordance with MIL-PRF19500 for JAN, JANTX, JANTXV, and JANS are available by adding MQ, MX, MV, or MSP prefixes respectively to part numbers. * RoHS Compliant devices available by adding "e3" suffix * Surface mount equivalents in DO-213AA also available as MLL1N746 thru MLL759A (consult factory for other surface mount options) * Smaller DO-35 glass body axial-leaded Zener equivalents are also available MAXIMUM RATINGS * * * * * * * Regulates voltage over a broad operating current and temperature range Selection from 2.4 to 12 V Standard voltage tolerances are plus/minus 5% with A suffix, 10 % with no suffix identification Tight tolerances available in plus or minus 2% or 1% with C or D suffix respectively Flexible axial-lead mounting terminals Nonsensitive to ESD per MIL-STD-750 Method 1020 Capacitance also specified (see Figure 3) Inherently radiation hard as described in Microsemi MicroNote 050 MECHANICAL AND PACKAGING * * * * * * * CASE: Hermetically sealed axial-lead glass DO-7 (DO-204AA) package TERMINALS: Tin-Lead or RoHS Compliant annealed matte-Tin plating solderable per MIL-STD750, method 2026 POLARITY: Cathode indicated by band. Diode to be operated with the banded end positive with respect to the opposite end for Zener regulation MARKING: Part number TAPE & REEL option: Standard per EIA-296 (add "TR" suffix to part number) WEIGHT: 0.2 grams See package dimensions on last page Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 1 1N746 - 759A, e3 1N4370- 4372A, e3 (DO-7) * Operating and Storage temperature: -65 C to +175 C * Thermal Resistance: 300 C/W junction to lead at 3/8 (10 mm) lead length from body, or 360C/W junction to ambient when mounted on FR4 PC board (1 oz Cu) with 4 mm2 copper pads and track width 1 mm, length 25 mm * Steady-State Power: 0.5 watts at TL < 25oC 3/8 inch (10 mm) from body or 0.417 W at TA < 25C when mounted on FR4 PC board as described for thermal resistance above (also see Figure1) * Forward voltage @200 mA: 1.1 volts * Solder Temperatures: 260 C for 10 s (max) Copyright (c) 2005 10-18-2005 REV C * 1N746 thru 1N759A, e3 and 1N4370 thru 1N4372A, e3 DO-7 Silicon 500 mW Zener Diodes SCOTTSDALE DIVISION JEDEC TYPE NO. (NOTE1) 1N4370 1N4371 1N4372 1N746 1N747 1N748 1N749 1N750 1N751 1N752 1N753 1N754 1N755 1N756 1N757 1N758 1N759 NOMINAL ZENER VOLTAGE VZ @ IZT (NOTE 2) VOLTS 2.4 2.7 3.0 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 ZENER TEST CURRENT IZT mA 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 MAXIMUM REVERSE CURRENT @ VR = 1 VOLT MAXIMUM ZENER IMPEDANCE ZZT @ IZT (NOTE 3) OHMS 30 30 29 28 24 23 22 19 17 11 7 5 6 8 10 17 30 MAXIMUM ZENER CURRENT IZM @25C A 100 75 50 10 10 10 2 2 1 1 .1 .1 .1 .1 .1 .1 .1 @+150C A 200 150 100 30 30 30 30 30 20 20 20 20 20 20 20 20 20 (NOTE 4) mA 150 135 120 110 100 95 85 75 70 65 60 55 50 45 40 35 30 TYPICAL TEMP COEFF. OF ZENER VOLTAGE VZ o %/ C -.085 -.080 -.075 -.066 -.058 -.046 -.033 -.015 +/-.010 +.030 +.049 +.053 +.057 +.060 +.061 +.062 +.062 WWW . Microsemi .C OM ELECTRICAL CHARACTERISTICS* @ 25oC * JEDEC Registered Data NOTE 1: Standard tolerance on JEDEC types shown is +/- 10%. Suffix letter A denotes +/- 5% tolerance; suffix letter C denotes +/- 2%; and suffix letter D denotes +/- 1% tolerance. NOTE 2: Voltage measurements to be performed 20 seconds after application of dc test current. NOTE 3: Zener impedance derived by superimposing on IZT, a 60 cps, rms ac current equal to 10% IZT (2 mA ac). See MicroNote 202 for typical zener Impedance variation with different operating currents. NOTE 4: 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 of 400 mW. TEMPERATURE COEFFICIENT NOMINAL ZENER VOLTAGE (VOLTS) FIGURE 1 POWER DERATING CURVE Copyright (c) 2005 10-18-2005 REV C o mV Change / C 1N746 - 759A, e3 1N4370- 4372A, e3 (DO-7) o TL - LEAD TEMPERATURE ( C) 3/8" FROM BODY or TA on FR4 PC BOARD Voltage Temperature o Coefficient %/ C TEMPERATURE COEFFICIENT mV/C RATED POWER DISSIPATION - mW GRAPHS FIGURE 2 ZENER VOLTAGE TEMPERATURE COEFFICIENT vs. ZENER VOLTAGE Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 2 1N746 thru 1N759A, e3 and 1N4370 thru 1N4372A, e3 DO-7 Silicon 500 mW Zener Diodes SCOTTSDALE DIVISION WWW . Microsemi .C OM PACKAGE DIMENSIONS All dimensions in: INCH mm FIGURE 3 CAPACITANCE vs. ZENER VOLTAGE (TYPICAL) 1N746 - 759A, e3 1N4370- 4372A, e3 (DO-7) Copyright (c) 2005 10-18-2005 REV C Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 3