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1N5518BUR thru 1N5546BUR (or MLL5518B thru MLL5546B)
SCOTTSDALE DIVISION
Low Voltage Surface Mount 500 mW Avalanche Diodes
DESCRIPTION The 1N5518BUR thru 1N5546BUR series of 0.5 watt glass surface mount 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 are also available with an internalmetallurgical-bond option by adding a "-1" suffix (see separate data sheet) including JAN, JANTX, and JANTXV military qualifications. Microsemi also offers numerous other Zener products to meet higher and lower power applications.
APPEARANCE
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DO-213AA
IMPORTANT: For the most current data, consult MICROSEMI's website: http://www.microsemi.com
FEATURES
* * Surface mount equivalent to JEDEC registered 1N5518 thru 1N5546 series Internally metallurgical bond option available by adding "-1" suffix that also includes JAN, JANTX, and JANTXV qualifications per MIL-PRF-19500/437 (see separate data sheet for same part numbers with "-1" suffix DO-7 or DO-35 glass body axial-leaded Zener equivalents also available per JEDEC registration (see separate data sheets for part numbers 1N5518 thru 1N5546 DO-7 and DO-35 * * * *
APPLICATIONS / BENEFITS
Regulates voltage over a broad operating current and temperature range Extensive selection from 3.3 to 33 V Standard voltage tolerances are plus/minus 5% with a "B" suffix, e.g. 1N5518BUR, etc. Tight tolerances available in plus or minus 2% or 1% with C or D suffix respectively, e.g. 1N5518CUR, 1N5518DUR, etc. Hermetically sealed surface mount package Nonsensitive to ESD per MIL-STD-750 Method 1020 Minimal capacitance (see Figure 3) Inherently radiation hard as described in Microsemi MicroNote 050
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MAXIMUM RATINGS
* * Operating and Storage temperature: -65 C to +175C Thermal Resistance: 150 C/W junction to end cap and 300C/W junction to ambient when mounted on FR4 PC board (1 oz Cu) with recommended footprint (see last page) Steady-State Power: 0.5 watts at end cap temperature TEC < 100C or ambient temperature TA < 25C when mounted on FR4 PC board as described for thermal resistance above (see Figure 2 for derating) Forward voltage @200 mA: 1.1 volts (maximum) Solder Temperatures: 260 C for 10 s (max)
MECHANICAL AND PACKAGING
* * * CASE: Hermetically sealed glass DO-213AA (SOD80 or MLL34) MELF style package TERMINALS: End caps 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: cathode band only TAPE & REEL option: Standard per EIA-481-1-A with 12 mm tape, 2000 per 7 inch reel or 5000 per 13 inch reel (add "TR" suffix to part number) WEIGHT: 0.04 grams See package dimensions and recommended pad layout on last page
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1N5518BUR - 1N5546BUR
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Copyright 2003 10-13-2003 REV A
Microsemi
Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
1N5518BUR thru 1N5546BUR (or MLL5518B thru MLL5546B)
SCOTTSDALE DIVISION
Low Voltage Surface Mount 500 mW Avalanche Diodes
WWW . Microsemi .C OM
ELECTRICAL CHARACTERISTICS
JEDEC TYPE NUMBER (Note 1 and Note 7) NOMINAL ZENER VOLTAGE TEST CURRENT
(TA = 25oC unless otherwise noted. Based on DC measurements at
MAX. REVERSE CURRENT (Note 4) B-C-D SUFFIX MAXIMUM DC ZENER CURRENT (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 = 250A REGULATION FACTOR (Note 6) LOW VZ CURRENT (Note 6)
thermal equilibrium; VF = 1.1 Max @ IF = 200 mA for all types.)
VZ @ IZT
(Note 2) VOLTS
IZT
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
(Note 3) OHMS 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
VZ
IZL
IR
Adc 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
IZM
ND
V/ Hz
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
VOLTS 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
mAdc 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
1N5518UR 1N5519UR 1N5520UR 1N5521UR 1N5522UR 1N5523UR 1N5524UR 1N5525UR 1N5526UR 1N5527UR 1N5528UR 1N5529UR 1N5530UR 1N5531UR 1N5532UR 1N5533UR 1N5534UR 1N5535UR 1N5536UR 1N5537UR 1N5538UR 1N5539UR 1N5540UR 1N5541UR 1N5542UR 1N5543UR 1N5544UR 1N5545UR 1N5546UR
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
NOTES: 1. TOLERANCE AND VOLTAGE DESIGNATION - The JEDEC type numbers shown without a suffix letter prior to the UR are +/-20% with guaranteed limits for only VZ, IR, and VF. Units with A suffix prior to the UR 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% prior to the UR. 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 CURRENT (IR) - Reverse 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. 7. PART NUMBER - These may be ordered as either 1N5518UR thru 1N5546UR or as MLL5518 thru MLL5546 part numbers. For JAN, JANTX, or JANTXV military types, see separate data sheet for the 1N5518UR-1 thru 1N5546UR-1 part numbers.
1N5518BUR - 1N5546BUR
Copyright 2003 10-13-2003 REV A
Microsemi
Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2
1N5518BUR thru 1N5546BUR (or MLL5518B thru MLL5546B)
SCOTTSDALE DIVISION
Low Voltage Surface Mount 500 mW Avalanche Diodes
GRAPHS and CIRCUIT
Pd Rated Power Dissipation (mW) Noise density, (ND) is specified in microvolt-rms per square-root-hertz. Actual measurement is performed using a 1 kHz to 3 kHz frequency bandpass filter at a constant Zener o test current (IZT) AT 25 C ambient temperature.
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TEC
TA
TEC, End Cap Temperature ( C) or TA Ambient temperature on FR4 PC board
o
FIGURE 2 Power Derating Curve FIGURE 1 Noise Density
Measurement Circuit
Typical Capacitance in Picofarads (pf)
Zener Voltage VZ
FIGURE 4
Zener Diode Characteristics and Symbol Identification
FIGURE 3 Capacitance vs. Zener Voltage (Typical)
1N5518BUR - 1N5546BUR
PACKAGE DIMENSIONS
DIM A B C
INCHES MIN MAX 0.063 0.067 0.130 0.146 0.016 0.022
MILLIMETERS MIN MAX 1.60 1.70 3.30 3.70 0.41 0.55 A B C
PAD LAYOUT
INCHES .200 .055 .080 mm 5.08 1.40 2.03 Page 3
Copyright 2003 10-13-2003 REV A
Microsemi
Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503

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