AEROSPACE PRODUCT LINE PACKAGE BROCHURE May 2016 For general information on Analog Devices Space Qualified products please visit the following address. http://www.analog.com/aerospace For technical inquiries on Aerospace Engineering Models please email us at [email protected] For Sales and Distribution contacts please visit the following address. http://www.analog.com/en/about-adi/corporate-information/sales-distribution.html Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 1 Aerospace Product Line Package Brochure COMMITMENT TO THE SPACE MARKET Analog Devices is committed to serving the needs of the world space community by manufacturing the highest quality data conversion and signal processing products. Analog Devices’ entry into the space level market occurred in August 1990 when it acquired Precision Monolithics Inc. located in Santa Clara, California. Analog Devices’ certified facilities have been supplying products for military and space applications since 1972. Analog Devices now offers state-of-the-art, data conversion and linear products to the space market place which were previously only available as commercial or military Class B products. Analog Devices space level operations located in Greensboro, North Carolina coordinates all space level V (class S) activities, including business development, manufacturing and engineering. The addition of new products is derived from our customers’ needs and the ability of these products to meet MIL-PRF-38535 QML level V requirements. Visit our web site (http://www.analog.com/aerospace) or call our factory contacts for the latest Class S May 2016 updates as well as for radiation information on these and other products. Analog Devices, Inc. Aerospace Product Line standard product is available in one or more of the following processes: MIL-PRF-38535, QML LEVEL V MIL-PRF-38535, QML R (LEVEL V with Radiation Qualification) MIL-PRF-38535, JAN S MIL-PRF-38535, Analog Devices, Inc.'s Aerospace Product Line Standard Product See http://www.analog.com/aerospace. (Standard Space Level Products Program) The table beginning on page 3 lists the standard product offered by Analog Device's Aerospace Product Line. Product is also available in accordance with source control drawings. Please call factory for further information. For further information see contact list on cover page. ANALOG DEVICES SPACE LEVEL PRODUCTS Manufacturing Locations Space Level Compliance Wafer Fab Assembly Screening and Quality Conformance Inspection MIL-PRF-38535 Class V Compliant QMLV Devices Full Wafer Lot Acceptance: ADI Wilmington MA ADI Limerick, Ireland ADI Santa Clara Die Bank ADI Phils, Inc. Cavite, Philippines ADI Phils, Inc. Cavite, Philippines Standard Space Products (non-QMLV) SEM Inspection, most models: ADI Wilmington MA ADI Limerick, Ireland ADI Santa Clara Die Bank TSMC Taiwan ADI Phils, Inc. Cavite, Philippines ADI Phils, Inc. Cavite, Philippines ADI Phils, Inc. Cavite, Philippines ADI Phils, Inc. Cavite, Philippines Customer Specific Special Flows ADI Wilmington MA ADI Limerick, Ireland ADI Santa Clara Die Bank TSMC Taiwan Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 2 Aerospace Product Line Package Brochure May 2016 PACKAGES The various packages offered by the Aerospace Product Line are in compliance with MIL-STD-1835. The following pages are for reference and are not guaranteed to be up to date. http://www.dscc.dla.mil/Programs/MilSpec/listdocs.asp?BasicDoc=MIL-STD-1835 BOTTOM BRAZED FLAT PACK (CONFIGURATION B OF MIL-STD-1835) SEE DETAIL A M - four places e N-2 places A A c c1 b1 b D b N places SECTION A-A L E3 A E2 k S1 4 places E Q L E3 k c DETAIL A Bottom Brazed Flat Pack Dimension Table Note A b b1 c c1 D D1 E E1 E2 E3 E4 E5 e k L Q S1 min 0.045 max 0.115 min 0.045 max 0.115 min 0.045 max 0.115 min 0.045 max 0.115 0.015 0.015 0.004 0.004 0.022 0.019 0.009 0.006 0.290 0.015 0.015 0.004 0.004 0.022 0.019 0.009 0.006 0.39 0.015 0.015 0.004 0.004 0.022 0.019 0.009 0.006 0.44 0.015 0.015 0.004 0.004 0.022 0.019 0.009 0.006 0.74 0.240 0.260 0.280 0.235 0.260 0.280 0.245 0.285 0.315 0.46 0.52 0.55 3 3 7 2 11 6 0.125 0.03 .050 BSC 0.008 0.250 0.026 0.005 0.125 0.03 0.015 0.370 0.045 .050 BSC 0.008 0.250 0.026 0.005 0.13 0.03 0.015 0.370 0.045 .050 BSC 0.008 0.250 0.026 0.005 0.18 0.03 0.015 0.370 0.045 Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 .050 BSC 0.008 0.25 0.026 0 0.015 0.37 0.045 3 Aerospace Product Line Package Brochure S2 a M N 0.0015 10 May 2016 0.0015 14 0.0015 16 Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 0.0015 28 4 Aerospace Product Line Package Brochure May 2016 GLASS SEALED CERAMIC FLAT PACK (CONFIGURATION A OF MIL-STD-1835) see note 1 M - four places k c c1 b SECTION A-A S1 e b1 b D k E k L AQ DETAIL A C Dimension Table for Ceramic Flat Pak All Dimensions in Inches Symbol N A max min max min 0.045 0.090 0.045 0.085 b 0.010 0.022 0.010 C 0.004 0.009 D --- E 0.240 e min max min 0.045 0.085 0.045 0.090 0.022 0.015 0.022 0.015 0.022 0.004 0.009 0.004 0.009 0.004 0.009 0.280 --- 0.390 --- 0.440 --- 0.640 0.260 0.235 0.260 0.245 0.285 0.300 0.420 10 14 0.05 BSC 16 0.050 BSC max 24 0.05 BSC Note 4 3 0.05 BSC k 0.008 0.015 0.008 0.015 0.008 0.015 0.008 0.015 L 0.250 0.370 0.250 0.370 0.250 0.370 0.250 0.370 Q 0.026 0.045 0.026 0.045 0.026 0.045 0.026 0.045 6 S1 0.005 --- 0.005 --- 0.005 --- 0.005 --- 7 Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 2 5 Aerospace Product Line Package Brochure May 2016 FLAT PACK NOTES: 1 Index area: A notch or a pin one identification mark shall be located adjacent to pin one and shall be located within the shaded area shown. The manufacturer’s identification shall not be used as a pin one identification mark. Alternatively, a tab (dimension k) may be used to identify pin one. This tab may located on either side of terminal one as shown I detail A. 2 If a pin one identification mark is used in addition to this tab, the minimum limit of dimension k does not apply. 3 This dimension allows for off-center lid meniscus, and glass overrun. 4 Dimensions b1 and c1 apply to lead base metal only. Dimension M applies to lead plating and finish thickness. The maximum limits oflead dimensions b and c or M shall be measured at the dentroid of the finished lead surfaces, when solder dip or tin plate lead finish is applied. 5 N is the maximum number of terminal positions. 6 Measure dimension S1 at all four corners, see 5.2.5 of MIL-STD-1835. There is an alternative minimum limit to dimension S1, see 5.2.2 of MIL-STD-1835. 7 For bottom-brazed lead packages, no organic or polymeric materials shall be molded to the bottom of the package to cover the leads. 8 Optional, see note 1. If a pin one identification mark is used in addition to this tab, the minimum limit of dimension k does not apply. 9 Applies to leads exiting the end of the body (short side) and closest to the corners. 10 Lead configuration is optional within dimension E except dimensions b and c apply (see 5.2.1 of MIL-STD-1835) 11 Dimension Q shall be measured at the point of exit (beyond meniscus) of the lead from the body. Dimension Q minimum shall be reduced by 0.0015 inch (0.038mm) maximum when solder dip lead finish is applied. 12 See tables VI and VII of MIL-STD-1835 for descriptive type designators. Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 6 Aerospace Product Line Package Brochure May 2016 2 LEAD CERAMIC FLAT PACK F-2A 2 LEAD FLAT PAK b e E L1 D1 D c A All Dimensions in Inches. Symbol A b c D D1 E e L1 Min .044 .015 .0045 .081 .045 .750 Max .066 .019 .0065 .250 .220 .093 .055 Note 3 3 Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 7 Aerospace Product Line Package Brochure May 2016 CERDIP PACKAGE D See Note 1 E S1 S E Q A L1 L b c E1 see note 7 Seating Plane e b1 # leads 8 14 16 18 20 24 PMI ltr Z Y Q X R V Q- 8 ADI ltr Note: min A 2 C Symbol min 0.200 B b1 Q-14 max Q-16 max min 0.200 Q-18 max min 0.200 Q-20 max min 0.200 Q-24 max min 0.200 max 0.225 0.014 0.023 0.014 0.023 0.014 0.023 0.014 0.023 0.014 0.023 0.014 0.023 0.030 0.070 0.030 0.070 0.030 0.070 0.030 0.070 0.030 0.070 0.030 0.070 0.008 0.015 0.008 0.015 0.008 0.015 0.008 0.015 0.008 0.015 0.008 0.015 D 4 E 4 0.220 0.310 0.220 0.310 0.220 0.310 0.220 0.310 0.220 0.310 0.500 0.610 E1 7 0.290 0.320 0.290 0.320 0.290 0.320 0.290 0.320 0.290 0.320 0.590 0.620 E 5 L 0.405 0.100 BSC 0.125 L1 0.200 0.150 Q 3 S 6 S1 6 α 0.015 0.785 0.100 BSC 0.125 0.150 0.060 0.015 0.055 0.005 0° 0.200 0.100 BSC 0.125 0.015 0.098 0° 0.200 0.150 0.060 0.005 15° 0.840 0.100 BSC 0.125 0.015 0.080 0° 0.200 0.150 0.060 0.005 15° 0.960 0.100 BSC 0.125 0.015 0.098 0° 0.200 0.150 0.060 0.005 15° 1.060 0.100 BSC 0.120 0.015 0.080 0° 0.200 0.150 0.060 0.005 15° 1.290 0.075 0.098 0.005 15° 0° 15° Millimeter A 5.08 B b1 2 Symbol C 5.08 5.08 5.08 5.08 5.72 0.36 0.58 0.36 0.58 0.36 0.58 0.36 0.58 0.36 0.58 0.36 0.58 0.76 1.78 0.76 1.78 0.76 1.78 0.76 1.78 0.76 1.78 0.76 1.78 0.20 0.38 0.20 0.38 0.20 0.38 0.20 0.38 0.20 0.38 0.20 4 E 4 5.59 7.87 5.59 7.87 5.59 7.87 5.59 7.87 5.59 7.87 12.70 15.49 E1 7 7.37 8.13 7.37 8.13 7.37 8.13 7.37 8.13 7.37 8.13 14.99 15.75 E 5 L 10.29 2.54 BSC 3.18 L1 5.08 3.81 19.94 2.54 BSC 3.18 5.08 3.81 21.34 2.54 BSC 3.18 5.08 3.81 24.38 2.54 BSC 3.18 5.08 3.81 26.92 0.38 D 2.54 BSC 3.18 5.08 3.81 32.77 2.54 BSC 3.05 5.08 3.81 Q 3 0.38 1.52 0.38 1.52 0.38 1.52 0.38 1.52 0.38 1.52 0.38 1.91 S 6 0.00 1.40 0.00 2.49 0.00 2.03 0.00 2.49 0.00 2.03 0.00 2.49 S1 6 0.13 0.13 0.13 0.13 0.13 Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 0.13 8 Aerospace Product Line Package Brochure May 2016 CERDIP (CONT) 24 # leads 28 PMI ltr W T ADI ltr Q-24A Q-28 Note: min A b b1 2 c Symbol max min 0.200 max 0.225 0.014 0.023 0.014 0.023 0.030 0.070 0.030 0.070 0.008 0.015 0.008 0.015 D 4 E 4 0.220 0.310 0.500 0.610 E1 7 0.290 0.320 0.590 0.620 e 5 L 1.280 0.100 BSC 0.125 L1 0.200 0.150 Q 3 S 6 S1 6 α 1.490 0.015 0.100 BSC 0.120 0.150 0.060 0.015 0.098 0.005 0° 0.200 0.075 0.098 0.005 15° 0° 15° Millimeter A 5.08 b b1 2 Symbol c 5.72 0.36 0.58 0.36 0.58 0.76 1.78 0.76 1.78 0.20 0.38 0.20 0.38 D 4 E 4 5.59 7.87 12.70 15.49 E1 7 7.37 8.13 14.99 15.75 e 5 L 32.51 2.54 BSC 3.18 L1 37.85 5.08 3.81 2.54 BSC 3.05 5.08 3.81 Q 3 0.38 1.52 0.38 1.91 S 6 0.00 2.49 0.00 2.49 S1 6 0.13 0.13 NOTES: 1 Index 2 The area; a notch or a lead one identification mark is located adjacent to lead one and is within the shaded area shown. minimum limit for dimension b1 may be 0.023 (0.58 mm) for all four corner leads only. 3 Dimension Q shall be measured from the seating plane to the base plane. 4 This dimension allows for off-center lid, meniscus and glass overrun. 5 The basic lead spacing is 0.100 (2.54 mm) between centerlines. 6 Applies 7 Lead to all four corners. center when α is 0°. E1 shall be measured at the centerline of the leads. Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 9 Aerospace Product Line Package Brochure May 2016 LEADLESS CHIP CARRIER see note 7 R typical D2 Plane 2 Plane 1 D D3 D1 L2 E TOP View E2 E2 E4 19 20 18 4 17 5 Bottom View 16 E3 E1 A 7 14 8 Symbol B1 e 12 11 9 10 D5 L1 45° Typical 20 Terminal LCC Inch 6 15 13 A1 e1 3 2 1 28 Terminal LCC Millimeter Inch Millimeter Min Max Min Max Min Max Min Max A 0.064 0.1 1.63 2.54 0.064 0.1 1.626 2.540 A1 0.054 0.088 1.37 2.24 0.054 0.088 1.372 2.235 B1 0.022 0.028 0.56 0.71 0.022 0.028 0.559 0.711 D 0.342 0.358 8.69 9.09 0.442 0.458 11.227 11.633 D1 0.075 REF 1.91 REF 0.075 REF 1.91 REF D2 0.200 REF 5.08 REF 0.300 REF 7.62 REF D3 0.100 REF 2.54 REF 0.150 REF 3.81 REF D4 D5 E 0.358 0.150 BSC 0.342 0.358 9.09 3.81 BSC 8.69 9.09 0.458 11.633 0.200 BSC 0.442 0.458 5.080 BSC 11.227 11.633 E1 0.075 REF 1.91 REF 0.075 REF 1.91 REF E2 0.200 REF 5.08 REF 0.300 REF 7.62 REF E3 0.100 REF 2.54 REF 0.150 REF E4 e 0.358 0.050 BSC 0.00 9.09 1.27 BSC 0.38 0.458 3.81 REF 0.000 0.050 BSC 0.015 11.633 1.27 BSC e1 0.015 L1 0.045 0.055 1.14 1.40 0.045 0.055 0.381 1.143 1.397 L2 0.077 0.093 1.96 2.36 0.077 0.093 1.956 2.362 R 0.007 0.011 0.18 0.28 0.007 0.011 0.178 0.279 Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 10 Aerospace Product Line Package Brochure May 2016 NOTES (LCC) 1A minimum clearance of 0.015” (0.381 mm) is maintained between corner terminals. 2 Electrical connection is required on plane 1. Metallization is optional on plane 2. However, if plane 2 is metallized it must be electrically connected. 3A minimum clearance of 0.20” (0.508 mm) is maintained between overall dimensions D4 × E4 and all other features, including metallization, chamfers and edges. 4 Non-electrical features for No. 1 terminal identification, optical orientation of handling purposes shall be within the shaded area shown on plane 2. 5 Dimension 6 Length A controls the overall package thickness. of pad metallization may increase only toward package periphery. 7 When space is available, the index corner may be metallized on either or both planes 1 and 2. The package edge at the index corner shall not be metallized. Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 11 Aerospace Product Line Package Brochure May 2016 SIDEBRAZED PACKAGE D See Note 1 E S1 S E Q A L1 L b 8 # leads e b1 14 c E1 Seating Plane 16 18 20 24 PMI ltr ZB YB QB XB RB VB ADI ltr D- 8 D-14 D-16 D-18 D-20 D-24 Note: min A b b1 2 c Symbol max min 0.200 max min 0.200 max min 0.200 Max min 0.200 max min 0.200 max 0.225 0.014 0.023 0.014 0.023 0.014 0.023 0.014 0.023 0.014 0.023 0.014 0.023 0.030 0.070 0.030 0.070 0.030 0.070 0.030 0.070 0.030 0.070 0.030 0.070 0.008 0.015 0.008 0.015 0.008 0.015 0.008 0.015 0.008 0.015 0.008 0.015 D 4 E 4 0.220 0.310 0.220 0.310 0.220 0.310 0.220 0.310 0.220 0.310 0.500 0.610 E1 7 0.290 0.320 0.290 0.320 0.290 0.320 0.290 0.320 0.290 0.320 0.590 0.620 e 5 0.125 0.200 0.125 L 0.405 0.100 BSC 0.125 L1 0.200 0.150 Q 3 S 6 S1 6 α 0.785 0.015 0.100 BSC 0.150 0.060 0.015 0.055 0.005 0° 0.015 0.098 0° 0.200 0.150 0.060 0.005 15° 0.840 0.100 BSC 0.125 0.015 0.080 0° 0.200 0.150 0.060 0.005 15° 0.960 0.100 BSC 0.125 0.015 0.098 0° 0.200 0.150 0.060 0.005 15° 1.060 0.100 BSC 0.120 0.015 0.080 0° 0.200 0.150 0.060 0.005 15° 1.290 0.075 0.098 0.005 15° 0° 15° Millimeter A 5.08 b b1 2 Symbol c 5.08 5.08 5.08 5.08 5.72 0.36 0.58 0.36 0.58 0.36 0.58 0.36 0.58 0.36 0.58 0.36 0.58 0.76 1.78 0.76 1.78 0.76 1.78 0.76 1.78 0.76 1.78 0.76 1.78 0.20 0.38 0.20 0.38 0.20 0.38 0.20 0.38 0.20 0.38 0.20 0.38 D 4 E 4 5.59 7.87 5.59 7.87 5.59 7.87 5.59 7.87 5.59 7.87 12.70 15.49 E1 7 7.37 8.13 7.37 8.13 7.37 8.13 7.37 8.13 7.37 8.13 14.99 15.75 e 5 L L1 Q 3 S 6 S1 6 10.29 2.54 BSC 19.94 2.54 BSC 21.34 2.54 BSC 24.38 2.54 BSC 26.92 2.54 BSC 32.77 2.54 BSC 3.18 5.08 3.18 5.08 3.18 5.08 3.18 5.08 3.18 5.08 3.05 5.08 3.81 0.00 3.81 0.00 3.81 0.00 3.81 0.00 3.81 0.00 3.81 0.00 0.38 1.52 0.38 1.52 0.38 1.52 0.38 1.52 0.38 1.52 0.38 1.91 1.40 0.13 2.49 0.13 2.03 0.13 2.49 0.13 2.03 0.13 Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 2.49 0.13 12 Aerospace Product Line Package Brochure May 2016 SIDEBRAZED (CONT) # leads 24 28 PMI ltr WB TB ADI ltr D-24A D-28 Note: min A b b1 2 c Symbol max min 0.200 max 40 48 D-40 D-48 min 0.225 max min 0.225 max 0.225 0.014 0.023 0.014 0.023 0.014 0.026 0.014 0.026 0.030 0.070 0.030 0.070 0.045 0.065 0.045 0.065 0.008 0.015 0.008 0.015 0.008 0.015 0.008 0.015 2.096 2.376 2.424 D 4 E 4 0.220 0.310 0.500 0.610 0.500 0.610 0.500 0.610 E1 7 0.290 0.320 0.590 0.620 0.590 0.630 0.520 0.630 e 5 L 1.280 0.100 BSC 0.125 L1 0.200 0.150 Q 3 S 6 S1 6 α 0.015 1.490 0.100 BSC 0.120 0.150 0.060 0.015 0.098 0.005 0° 0.200 0.015 0.098 0° 0.200 0.140 0.075 0.005 15° 0.100 BSC 0.125 0.100 BSC 0.125 0.140 0.070 0.015 0.098 0.005 15° 0° 0.200 0.070 0.098 0.005 15° 0° 15° Millimeter A 5.08 b b1 2 Symbol c 5.72 5.72 5.72 0.36 0.58 0.36 0.58 0.36 0.66 0.36 0.66 0.76 1.78 0.76 1.78 1.14 1.65 1.14 1.65 0.38 0.20 0.38 0.20 0.38 0.20 0.20 32.51 4 E 4 5.59 7.87 12.70 15.49 12.70 15.49 12.70 15.49 E1 7 7.37 8.13 14.99 15.75 14.99 16.00 13.21 16.00 e 5 2.54 BSC 37.85 53.24 0.38 D 2.54 BSC 2.54 BSC 61.57 2.54 BSC L 3.18 5.08 3.05 5.08 3.18 5.08 3.18 5.08 L1 3.81 0.00 3.81 0.00 3.56 0.00 3.56 0.00 0.38 1.52 0.38 1.91 0.38 1.78 0.38 1.78 Q 3 S 6 S1 6 2.49 0.13 2.49 0.13 2.49 0.13 2.49 0.13 NOTES: 1 Index 2 The area; a notch or a lead one identification mark is located adjacent to lead one and is within the shaded area shown. minimum limit for dimension b1 may be 0.023 (0.58 mm) for all four corner leads only. 3 Dimension Q shall be measured from the seating plane to the base plane. 4 This dimension allows for off-center lid, meniscus and glass overrun. 5 The basic lead spacing is 0.100 (2.54 mm) between centerlines. 6 Applies 7 Lead to all four corners. center when α is 0°. E1 shall be measured at the centerline of the leads. Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 13 Aerospace Product Line Package Brochure May 2016 TO CAN Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 14 Aerospace Product Line Package Brochure May 2016 TO CAN (CONT) 1 Symbol A Φb Φb1 Φb2 ΦD ΦD1 ΦD2 e e1 F k k1 L L1 L2 Q α β N A1 Min Max 0.165 0.185 0.016 0.019 0.016 0.021 0.016 0.024 0.335 0.375 0.305 0.335 0.110 0.160 0.200 BSC 0.100 BSC --0.040 0.027 0.034 0.027 0.045 0.500 0.750 --0.050 0.250 --0.010 0.045 45°BSC 45°BSC 8 Note 1 1 3 1 1 1 4 4 5 Dimensions in Inches 2 A2 A3 Min Max Note Min Max 0.165 0.185 0.165 0.185 0.016 0.019 1 0.016 0.019 0.016 0.021 1 0.016 0.021 0.016 0.024 0.016 0.024 0.335 0.375 0.335 0.375 0.305 0.335 0.305 0.335 0.110 0.160 0.110 0.160 0.230 BSC 0.230 BSC 0.115 BSC 0.115 BSC --0.040 --0.040 0.027 0.034 0.027 0.034 0.027 0.045 3 0.027 0.045 0.500 0.750 1 0.500 0.750 --0.050 1 --0.050 0.250 --1 0.250 --0.010 0.045 0.010 0.045 36°BSC 4 30°BSC 36°BSC 4 30°BSC 10 5 12 Note 1 1 Min 0.240 0.016 0.016 0.016 0.350 0.315 A4 Max 0.260 0.019 0.021 0.024 0.370 0.335 Note 1 1 0.200 BSC 0.100 BSC 0.009 0.125 3 1 1 1 0.029 0.500 --0.250 4 4 5 0.040 0.750 0.050 --- 45°BSC 90°BSC 3 3 1 1 1 2 4 4 5 1 (All leads) Φb applies between L1 and L2. Φb1 applies between L2 and 0.500 from the reference plane. Diameter is uncontrolled in L1 and beyond 0.500 from the reference plane. 2 The package feature described by dimension symbols ΦD2 and Q does not exist for variation A4; therefore the reference base, and seating planes are the same for this variation. 3 Measured from the maximum diameter of the product. 4α is the basic spacing from the centerline of the tab t terminal 1 and is the basic spacing of each lead or lead position (N-1 places) from a, looking at the bottom of the package. 5N is the maximum number of terminal positions. 6 Leads having a maximum diameter 0.019 inches measured in gauging plane 0.054 +0.001 –0.000 inches below the base plane of the product shall be within 0.007 of their true position relative to a maximum width tab. 7 This style package may be measured by direct methods or by gauge. 8 See table VI for descriptive type designators. Analog Devices, Inc. 7910 Triad Center Drive, Greensboro, NC 27409 15