1N748AUR-1

1N746AUR-1 – 1N759AUR-1, 1N4370AUR-1 – 1N4372AUR-1 Available on commercial versions Silicon MELF 500 mW Zener Diodes Qualified per MIL-PRF-19500/127 Qualified Levels: JAN, JANTX, and JANTXV DESCRIPTION This popular series of 500 mW Zener voltage regulators provides a selection from 2.4 to 12 volts in a standard 5% tolerance as well as available tighter 2% and 1% tolerances. These glass, surface mount DO-213AA Zeners feature an internal metallurgical bond and are military qualified to the JAN, JANTX, and JANTXV level. A RoHS compliant commercial grade only version is also available. Important: For the latest information, visit our website http://www.microsemi.com. FEATURES • • • • DO-213AA MELF Package JEDEC registered 1N746 through 1N759A and 1N4370 through 1N4372A series. Standard voltage tolerance is ± 5% with optional tighter tolerances of ± 2% or 1%. Internal metallurgical bond. JAN, JANTX, and JANTXV qualifications are available per MIL-PRF-19500/127. Also available in: (See part nomenclature for all available options.) • • RoHS compliant versions available (commercial grade only). These commercial surface mount equivalents were also previously identified with a CDLL or MLL prefix instead of the "1N" prefix. DO-35 (DO-204AH) package (axial-leaded) 1N746A-1 – 1N759A-1 and 1N4370A-1 – 1N4372A-1 APPLICATIONS / BENEFITS • • • • • • Regulates voltage over a broad range of temperature and current. Regulated voltage range from 2.4 to 12 V. Small size for high density mounting using the surface mount method (see package illustration). Non-sensitive to ESD per MIL-STD-750 method 1020. Minimal capacitance. Inherently radiation hard as described in Microsemi MicroNote 050. MAXIMUM RATINGS Parameters/Test Conditions Operating and Storage Temperature Thermal Resistance Junction-to-End Cap Thermal Resistance Junction-to-Ambient when (1) mounted on PCB Average Rated Power Dissipation (2) @ T EC = +125°C @ T A = 55°C mounted on PCB Forward Voltage @ I F = 200 mA Solder Temperature @ 10 s NOTES: Symbol T J and T STG R ӨJEC R ӨJA P M(AV) VF Value -65 to +175 100 300 0.5 0.4 1.1 260 Unit ºC ºC/W ºC/W W V C o 1. See Figure 1 for derating curves. T A = +75 °C on an FR4 PC board with 1 oz copper metalization. 2. The 0.5 W linearly derates starting at T EC = 125 °C and goes to zero at 175 °C. For ambient T A condition on a typical PC board, it linearly derates from 400 mW starting at 55 °C and goes to zero at 175 °C (see Figure2). MSC – Lawrence 6 Lake Street, Lawrence, MA 01841 Tel: 1-800-446-1158 or (978) 620-2600 Fax: (978) 689-0803 MSC – Ireland Gort Road Business Park, Ennis, Co. Clare, Ireland Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298 Website: www.microsemi.com T4-LDS-0288-1, Rev. 1 (5/23/13) ©2013 Microsemi Corporation Page 1 of 6 1N746AUR-1 – 1N759AUR-1, 1N4370AUR-1 – 1N4372AUR-1 MECHANICAL and PACKAGING • • • • • • • • CASE: Hermetically sealed glass case package. TERMINALS: Tin/lead plated or RoHS compliant matte-tin (on commercial grade only) over copper clad steel. Solderable per MIL-STD-750, method 2026. POLARITY: Cathode end is banded. MOUNTING: The axial coefficient of expansion (COE) of this device is approximately +6PPM/°C. The COE of the mounting surface system should be selected to provide a suitable match with this device. MARKING: Part number. TAPE & REEL option: Standard per EIA-296. Consult factory for quantities. WEIGHT: Approximately 0.04 grams. See Package Dimensions on last page. PART NOMENCLATURE JAN 1N746 A UR -1 (e3) Reliability Level JAN = JAN level JANTX = JANTX level JANTXV = JANTXV level Blank = Commercial RoHS Compliance e3 = RoHS compliant (available on commercial grade only) Blank = non-RoHS compliant Metallurgically Bonded JEDEC type number (see Electrical Characteristics table) Surface Mount Package type Zener Voltage Tolerance A = 5% C = 2% D = 1% SYMBOLS & DEFINITIONS Definition Symbol IR I Z , I ZT , I ZK I ZM I ZSM VF VR VZ Z ZT or Z ZK Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and temperature. Regulator Current: The dc regulator current (I Z ), at a specified test point (I ZT ), near breakdown knee (I ZK ). Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating. Maximum Zener Surge Current: The non-repetitive peak value of Zener surge current at a specified wave form. Maximum Forward Voltage: The maximum forward voltage the device will exhibit at a specified current. Reverse Voltage: The reverse voltage dc value, no alternating component. Zener Voltage: The Zener voltage the device will exhibit at a specified current (I Z ) in its breakdown region. Dynamic Impedance: The small signal impedance of the diode when biased to operate in its breakdown region at a specified rms current modulation (typically 10% of I ZT or I ZK ) and superimposed on I ZT or I ZK respectively. T4-LDS-0288-1, Rev. 1 (5/23/13) ©2013 Microsemi Corporation Page 2 of 6 1N746AUR-1 – 1N759AUR-1, 1N4370AUR-1 – 1N4372AUR-1 ELECTRICAL CHARACTERISTICS @ 25 ºC JEDEC TYPE NO. (NOTE 1) 1N4370A-1 1N4371A-1 1N4372A-1 1N746A-1 1N747A-1 1N748A-1 1N749A-1 1N750A-1 1N751A-1 1N752A-1 1N753A-1 1N754A-1 1N755A-1 1N756A-1 1N757A-1 1N758A-1 1N759A-1 NOMINAL ZENER VOLTAGE V Z @ I ZT (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 MAXIMUM ZENER IMPEDANCE Z ZT @ I ZT (NOTE 3) Ohms 30 30 29 24 22 20 18 15 14 8 3 3 4 5 6 7 10 REVERSE VOLTAGE VR Volts 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.5 2.0 2.5 3.5 4.0 5.0 6.0 7.0 8.0 9.0 MAXIMUM REVERSE CURRENT IR @ VR @ 25 °C µA 100 60 30 5 3 2 2 5 5 5 5 2 2 1 1 1 1 @ +150 °C µA 200 150 100 30 30 30 50 50 50 50 50 50 50 50 50 50 50 MAXIMUM ZENER CURRENT I ZM (NOTE 4) mA 155 140 125 120 110 100 90 85 75 70 65 60 55 50 45 40 35 TEMPERATURE COEFFICIENT OF ZENER VOLTAGE α VZ % / °C -0.085 -0.080 -0.075 -0.070 -0.065 -0.060 -0.055 / +.020 -0.043 / +.025 -0.030 / +.030 -0.028 / +.036 +0.045 +0.050 +0.058 +0.062 +0.068 +0.076 +0.080 NOTES: 1 The JEDEC type numbers shown (A suffix) have a ± 5% tolerance on nominal Zener voltage. 2. Voltage measurements to be performed 20 seconds after application of dc test current. 3. Zener impedance derived by superimposing on I ZT , a 60 cps, rms current equal to 10% I ZT (20 mA). See MicroNote 202 for typical Zener Impedance variation with different operating currents. 4. Allowance has been made for the increase in V Z due to Z Z and for the increase in junction temperature as the unit approaches thermal equilibrium at the power dissipation of 400mW. T4-LDS-0288-1, Rev. 1 (5/23/13) ©2013 Microsemi Corporation Page 3 of 6 1N746AUR-1 – 1N759AUR-1, 1N4370AUR-1 – 1N4372AUR-1 DC Operations Maximum Rating (mW) GRAPHS T EC (ºC) (End Cap) DC Operations Maximum Rating (mW) FIGURE 1 Temperature-Power Derating Curve T (PCB) (ºC) (PCB) FIGURE 2 Temperature-Power Derating Curve T4-LDS-0288-1, Rev. 1 (5/23/13) ©2013 Microsemi Corporation Page 4 of 6 1N746AUR-1 – 1N759AUR-1, 1N4370AUR-1 – 1N4372AUR-1 Theta (°C/W) GRAPHS (continued) Time (s) FIGURE 3 Thermal Impedance To End Cap T4-LDS-0288-1, Rev. 1 (5/23/13) ©2013 Microsemi Corporation Page 5 of 6 1N746AUR-1 – 1N759AUR-1, 1N4370AUR-1 – 1N4372AUR-1 PACKAGE DIMENSIONS DIM BD BL ECT S INCH MIN MAX 0.063 0.067 0.130 0.146 0.016 0.022 0.001 min MILLIMETERS MIN MAX 1.60 1.70 3.30 3.71 0.41 0.56 0.03 min NOTES: 1. Dimensions are in inches. Millimeters are given for information only. 2. Dimensions are pre-solder dip. 3. Referencing to dimension S, minimum clearance of glass body to mounting surface on all orientations. 4. In accordance with ASME Y14.5M, diameters are equivalent to Φx symbology. PAD LAYOUT A B C T4-LDS-0288-1, Rev. 1 (5/23/13) ©2013 Microsemi Corporation INCH 0.200 0.055 0.080 mm 5.08 1.40 2.03 Page 6 of 6