1N5518B thru 1N5546B-1 DO-35 Low Voltage Avalanche 500 mW Zener Diodes DO-35 SCOTTSDALE DIVISION APPEARANCE The 1N5518 thru 1N5546 series of 0.5 watt Zener Voltage Regulators provides a selection from 3.3 to 33 volts in standard 5% tolerances as well as tighter tolerances identified by different suffix letters on the part number. These glass axial-leaded DO-35 Zeners are also available with an internalmetallurgical-bond option by adding a “-1” suffix. This type of bonded Zener package construction is available in JAN, JANTX, and JANTXV military qualifications to MIL-PRF-19500/437. Microsemi also offers numerous other Zener products to meet higher and lower power applications. DO-35 (DO-204AH) IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com FEATURES APPLICATIONS / BENEFITS • JEDEC registered 1N5518 thru 1N5546 • Internal metallurgical bond option available by adding a “-1” suffix • Also available in JAN, JANTX, and JANTXV qualifications per MIL-PRF-19500/437 by adding the JAN, JANTX, or JANTXV prefixes to part numbers for desired level of screening as well as –1” suffix; (e.g. JANTX1N5518B-1, JANTXV1N5546D-1, etc.) • Military Surface Mount available in DO-213AA package outline by adding a UR-1 suffix in addition to the JAN, JANTX, and JANTXV prefix; e.g. JANTX1N5518BUR-1 (see separate data sheet) • Commercial Surface Mount also available in separate data sheet as 1N5518UR to 1N5546BUR in DO-213AA package (consult factory for others) • DO-7 glass body axial-leaded Zener equivalents are also available MAXIMUM RATINGS • • • • • • • • Regulates voltage over a broad operating current and temperature range Guaranteed voltage regulation (∆VZ) from IZL to IZT Voltage selection from 3.3 to 33 V Standard voltage tolerances are plus/minus 5% with a “B” suffix 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 Minimal capacitance (see Figure 3) Inherently radiation hard as described in Microsemi MicroNote 050 MECHANICAL AND PACKAGING º • • • • • • • CASE: Hermetically sealed axial-lead glass DO-35 (DO-204AH) package TERMINALS: Leads, tin-lead plated solderable per MIL-STD-750, method 2026 POLARITY: Cathode indicated by band where diode is 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 1N5518B - 1N5546B-1, DO-35 • Operating and Storage temperature: -65 C to +175ºC • Thermal Resistance: 250 ºC/W junction to lead at 3/8 (10 mm) lead length from body, or 310ºC/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 < 50oC 3/8 inch (10 mm) from body or 0.48 W at TA < 25ºC when mounted on FR4 PC board as described for thermal resistance above (see Figure 2 for derating) • Forward voltage @200 mA: 1.1 volts • Solder Temperatures: 260 ºC for 10 s (max) Copyright 2003 11-12-2003 REV B • WWW . Microsemi .C OM DESCRIPTION 1N5518B thru 1N5546B-1 DO-35 Low Voltage Avalanche 500 mW Zener Diodes DO-35 SCOTTSDALE DIVISION (TA = 25oC unless otherwise noted. Based on DC measurements at thermal equilibrium; VF = 1.1 Max @ IF = 200 mA for all types.) JEDEC TYPE NUMBER (Note 1) NOMINAL ZENER VOLTAGE VZ @ IZT TEST CURRENT IZT (Note 2) VOLTS 1N5518 1N5519 1N5520 1N5521 1N5522 1N5523 1N5524 1N5525 1N5526 1N5527 1N5528 1N5529 1N5530 1N5531 1N5532 1N5533 1N5534 1N5535 1N5536 1N5537 1N5538 1N5539 1N5540 1N5541 1N5542 1N5543 1N5544 1N5545 1N5546 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 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 22.0 24.0 25.0 28.0 30.0 33.0 mAdc 20 20 20 20 10 5.0 3.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 MAX. ZENER IMPEDANCE B-C-D SUFFIX ZZT @ IZT MAX. REVERSE LEAKAGE CURRENT (Note 4) (Note 3) IR OHMS µAdc 26 24 22 18 22 26 30 30 30 35 40 45 60 80 90 90 100 100 100 100 100 100 100 100 100 100 100 100 100 5.0 3.0 1.0 3.0 2.0 2.0 2.0 1.0 1.0 0.5 0.5 0.1 0.05 0.05 0.05 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 VR – VOLTS NON & ASUFFIX 0.90 0.90 0.90 1.0 1.5 2.0 3.0 4.5 5.5 6.0 6.5 7.0 8.0 9.0 9.5 10.5 11.5 12.5 13.0 14.0 15.0 16.0 17.0 18.0 20.0 21.0 23.0 24.0 28.0 B-C-D SUFFIX 1.0 1.0 1.0 1.5 2.0 2.5 3.5 5.0 6.2 6.8 7.5 8.2 9.1 9.9 10.8 11.7 12.6 13.5 14.4 15.3 16.2 17.1 18.0 19.8 21.6 22.4 25.2 27.0 29.7 B-C-D SUFFIX MAXIMUM DC ZENER CURRENT IZM (Note 5) mAdc 115 105 98 88 81 75 68 61 56 51 46 42 38 35 32 29 27 25 24 22 21 20 19 17 16 15 14 13 12 B-C-D SUFFIX MAX. NOISE DENSITY AT IZ = 250µA REGULATION FACTOR LOW VZ CURRENT (Note 6) (Note 6) µV/ √Hz VOLTS mAdc 0.5 0.5 0.5 0.5 0.5 0.5 1.0 1.0 1.0 2.0 4.0 4.0 4.0 5.0 10 15 20 20 20 20 20 20 20 20 20 20 20 20 20 0.90 0.90 0.85 0.75 0.60 0.65 0.30 0.20 0.10 0.05 0.05 0.05 0.10 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.25 0.30 0.35 0.40 0.45 0.50 2.0 2.0 2.0 2.0 1.0 0.25 0.25 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 ND ∆VZ IZL Copyright 2003 11-12-2003 REV B Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 2 1N5518B - 1N5546B-1, DO-35 NOTES: 1. TOLERANCE AND VOLTAGE DESIGNATION – The JEDEC type numbers shown are +/-20% with guaranteed limits for only VZ, IR, and VF. Units with A suffix are +/-10% with guaranteed limits for VZ, IR, and VF. Units with guaranteed limits for all six parameters are indicated by a B suffix for +/-5.0% units, C suffix for +/-2.0% and D suffix for +/-1.0%. 2. ZENER VOLTAGE (VZ) MEASUREMENT – o Nominal zener voltage is measured with the device junction in thermal equilibrium with ambient temperature of 25 C. 3. ZENER IMPEDANCE (ZZ) MEASUREMENT – The zener impedance is derived from the 60 Hz ac voltage, which results when an ac current having an rms value equal to 10% of the dc zener current (IZT) is superimposed on IZT. 4. REVERSE LEAKAGE CURRENT (IR) – Reverse leakage currents are guaranteed and are measured at VR as shown on the table. 5. MAXIMUM REGULATOR CURRENT (IZM) – The maximum current shown is as shown in MIL-PRF-19500/437. 6. MAXIMUM REGULATION FACTOR (∆VZ) – ∆VZ is the maximum difference between VZ at IZT and VZ at IZL measured with the device junction in thermal equilibrium. WWW . Microsemi .C OM ELECTRICAL CHARACTERISTICS 1N5518B thru 1N5546B-1 DO-35 Low Voltage Avalanche 500 mW Zener Diodes DO-35 SCOTTSDALE DIVISION WWW . Microsemi .C OM CIRCUIT AND GRAPHS Rated Power Dissipation (mW) TYPICAL CAPACITANCE IN PICOFARADS Noise density, (ND) is specified in microvolts rms per square-root-hertz (µV/ √Hz). Actual measurement is performed using a 1 kHz to 3 kHz frequency bandpass o filter with a constant Zener test current (IZT) at 25 C ambient temperature. FIGURE 1 Noise Density Measurement Circuit o TL – Lead Temperature ( C) 3/8” from body or TA on FR4 PC Board At zero volts At –2 volts (VR) ZENER VOLTAGE VZ FIGURE 2 – Power Derating Curve FIGURE 3 Capacitance vs. Zener Voltage (TYPICAL) PACKAGE DIMENSIONS Copyright 2003 11-12-2003 REV B 1N5518B - 1N5546B-1, DO-35 FIGURE 4 Zener Diode Characteristics and Symbol Identification All dimensions in: INCH mm Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 3