1N5221B-1 thru 1N5281B-1 Available on commercial versions Screening in reference to MIL-PRF-19500 available 500 mW GLASS AXIAL-LEAD ZENER DIODES DESCRIPTION The popular 1N5221B-1 thru 1N5281B-1 series of 0.5 watt Zener voltage regulators provides a selection from 2.4 to 200 volts in standard 5% or 10% 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 in various up-screening levels by adding a prefix identifier as described in the "Part Nomenclature" section of this datasheet. Microsemi also offers numerous other Zener products to meet higher and lower power applications. Important: For the latest information, visit our website http://www.microsemi.com. FEATURES * * * * JEDEC registered 1N5221 thru 1N5281 series. Voltage tolerances of 10%, 5%, 2%, and 1% available. Internal metallurgical bond. Up-screening in reference to MIL-PRF-19500 is available. (See part nomenclature for all available options.) * RoHS compliant versions available (commercial grade only). DO-35 (DO-204AH) Package Also available in: DO-213AA MELF (surface mount) 1N5221BUR-1 thru 1N5281BUR-1 APPLICATIONS / BENEFITS * * * * * * Regulates voltage over a broad operating current and temperature range. Extensive selection from 2.4 to 200 V. Flexible axial-lead mounting terminals. Non-sensitive to ESD (MIL-STD-750 method 1020). Minimal capacitance (see Figure 2). Inherently radiation hard per Microsemi "MicroNote 050". MAXIMUM RATINGS Parameters/Test Conditions Junction and Storage Temperature (1) Thermal Resistance Junction-to-Lead (2) Thermal Resistance Junction-to-Ambient (3) Steady-State Power Dissipation Forward Voltage @ 200 mA Solder Temperature @ 10 s Symbol Value TJ and TSTG R JL R JA PD VF TSP -65 to +175 250 310 0.5 1.5 260 Unit o C C/W o C/W W V o C o Notes: 1. At 3/8 (10 mm) lead length from body. 2 2. When mounted on FR4 PC board (1 oz Cu) with 4 mm copper pads and track width 1 mm, length 25 mm. o 3. At T L < 50 C 3/8 inch (10 mm) from body or 0.48 W at T A < 25 C when mounted on FR4 PC board as described for thermal resistance above (also see Figure1). 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-0232, Rev. 1 (111957) (c)2011 Microsemi Corporation Page 1 of 5 1N5221B-1 thru 1N5281B-1 MECHANICAL and PACKAGING * * * * * * * CASE: Hermetically sealed axial-lead glass DO-35 (DO-204AH) package. TERMINALS: Tin-lead or RoHS compliant annealed matte-tin plating (commercial grade only) solderable per MIL-STD-750, method 2026. MARKING: Part number. POLARITY: Cathode indicated by band. Diode to be operated with the banded end positive with respect to the opposite end for Zener regulation. TAPE & REEL option: Standard per EIA-296 (add "TR" suffix to part number). Consult factory for quantities. WEIGHT: 0.2 grams. See Package Dimensions on last page. PART NOMENCLATURE MQ 1N5221 B -1 (e3) Reliability Level MQ (reference JAN) MX (reference JANTX) MV (reference JANTXV) MSP (reference JANS) 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) Zener Voltage Tolerance A = 10% B = 5% C = 2% D = 1% SYMBOLS & DEFINITIONS Definition Symbol IR I Z, I ZT, I ZK I ZM TSP 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. Temperature Solder Pad: The maximum solder temperature that can be safely applied to the terminal. 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-0232, Rev. 1 (111957) (c)2011 Microsemi Corporation Page 2 of 5 1N5221B-1 thru 1N5281B-1 ELECTRICAL CHARACTERISTICS @ 25 oC unless otherwise noted.* JEDEC Type No. (Note 1) 1N5221B-1 1N5222B-1 1N5223B-1 1N5224B-1 1N5225B-1 1N5226B-1 1N5227B-1 1N5228B-1 1N5229B-1 1N5230B-1 1N5231B-1 1N5232B-1 1N5233B-1 1N5234B-1 1N5235B-1 1N5236B-1 1N5237B-1 1N5238B-1 1N5239B-1 1N5240B-1 1N5241B-1 1N5242B-1 1N5243B-1 1N5244B-1 1N5245B-1 1N5246B-1 1N5247B-1 1N5248B-1 1N5249B-1 1N5250B-1 1N5251B-1 1N5252B-1 1N5253B-1 1N5254B-1 1N5255B-1 1N5256B-1 1N5257B-1 1N5258B-1 1N5259B-1 1N5260B-1 1N5261B-1 1N5262B-1 1N5263B-1 1N5264B-1 1N5265B-1 1N5266B-1 1N5267B-1 1N5268B-1 1N5269B-1 1N5270B-1 1N5271B-1 1N5272B-1 1N5273B-1 1N5274B-1 1N5275B-1 1N5276B-1 1N5277B-1 1N5278B-1 1N5279B-1 1N5280B-1 1N5281B-1 Nominal Zener Voltage V Z @ I ZT Test Current I ZT Volts 2.4 2.5 2.7 2.8 3.0 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.0 6.2 6.8 7.5 8.2 8.7 9.1 10 11 12 13 14 15 16 17 18 19 20 22 24 25 27 28 30 33 36 39 43 47 51 56 60 62 68 75 82 87 91 100 110 120 130 140 150 160 170 180 190 200 mA 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 9.5 9.0 8.5 7.8 7.4 7.0 6.6 6.2 5.6 5.2 5.0 4.6 4.5 4.2 3.8 3.4 3.2 3.0 2.7 2.5 2.2 2.1 2.0 1.8 1.7 1.5 1.4 1.4 1.3 1.1 1.0 0.95 0.90 0.85 0.80 0.74 0.68 0.66 0.65 Max Zener Impedance (Note 2) Z ZT @ I ZT Z ZK @ I ZK = 0.25 mA Ohms 30 30 30 30 29 28 24 23 22 19 17 11 7.0 7.0 5.0 6.0 8.0 8.0 10 17 22 30 13 15 16 17 19 21 23 25 29 33 35 41 44 49 58 70 80 93 105 125 150 170 185 230 270 330 370 400 500 750 900 1100 1300 1500 1700 1900 2200 2400 2500 Ohms 1200 1250 1300 1400 1600 1600 1700 1900 2000 1900 1600 1600 1600 1000 750 500 500 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 700 700 800 900 1000 1100 1300 1400 1400 1600 1700 2000 2200 2300 2600 3000 4000 4500 4500 5000 5500 5500 6000 6500 7000 Max Reverse Leakage Current IR @ A 100 100 75 75 50 25 15 10 5.0 50 5.0 5.0 5.0 5.0 3.0 3.0 3.0 3.0 3.0 3.0 2.0 1.0 0.5 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 0.1 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 A 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 1.9 1.9 2.9 3.3 3.8 4.8 5.7 6.2 6.2 6.7 7.6 8.0 8.7 9.4 9.5 10.5 11.4 12.4 13.3 13.3 14.3 16.2 17.1 18.1 20 20 22 24 26 29 31 34 37 41 44 45 49 53 59 65 66 72 80 86 94 101 108 116 123 130 137 144 VR Volts B,C & D 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 2.0 2.0 3.0 3.5 4.0 5.0 6.0 6.5 6.5 7.0 8.0 8.4 9.1 9.9 10 11 12 13 14 14 15 17 18 19 21 21 23 25 27 30 33 36 39 43 46 47 52 56 62 68 69 76 84 91 99 106 114 122 129 137 144 152 Max Zener Voltage Temp. Coeff. (Note 3) VZ (% / oC) -0.085 -0.085 -0.080 -0.080 -0.075 -0.070 -0.065 -0.060 +/-0.055 +/-0.030 +/-0.030 +0.038 +0.038 +0.045 +0.050 +0.058 +0.062 +0.065 +0.068 +0.075 +0.076 +0.077 +0.079 +0.082 +0.082 +0.083 +0.084 +0.085 +0.086 +0.086 +0.087 +0.088 +0.089 +0.090 +0.091 +0.091 +0.092 +0.093 +0.094 +0.095 +0.095 +0.096 +0.096 +0.097 +0.097 +0.097 +0.098 +0.098 +0.099 +0.099 +0.110 +0.110 +0.110 +0.110 +0.110 +0.110 +0.110 +0.110 +0.110 +0.110 +0.110 *JEDEC registered data. JEDEC type numbers listed indicate a tolerance of +/- 5%. Devices with guaranteed limits on all six parameters are indicated by suffix A for +/- 10% tolerance and suffix B for +/- 5% tolerance. Also available with suffix C or D which indicates 2% and 1% tolerance respectively. T4-LDS-0232, Rev. 1 (111957) (c)2011 Microsemi Corporation Page 3 of 5 1N5221B-1 thru 1N5281B-1 NOTES: 1. The electrical characteristics are measured after allowing the device to stabilize for 20 seconds when mounted with a 3/8" (10 mm) minimum lead length from the case. 2. The Zener impedance is derived from the 60 Hz ac voltage that results when an ac current having an rms value equal to 10% of the dc Zener current (I ZT or I ZK ) is superimposed on I ZT or I ZK . Zener impedance is measured at two points to ensure a sharp knee on the breakdown curve, thereby eliminating unstable units. Also see "MicroNote 202" for variation in dynamic impedance with different operating currents. 3. Temperature coefficient ( VZ ). Test conditions for temperature coefficient are as follows: o o a. I ZT = 20 mA, T 1 = 25 C, T 2 = 125 C (1N5221A, B thru 1N5242A, B). b. I ZT = Rated I ZT , T 1 = 25 oC, T 2 = 125 oC (1N5243A, B thru 1N5281A, B). (Device to be temperature stabilized with current applied prior to reading breakdown voltage at the specified ambient temp.) Typical Capacitance in Pico Farads (pF) Pd, Rated Power Dissipation (mW) GRAPHS T L Lead Temperature at 3/8" From Body or T A on FR4 PC Board FIGURE 1 POWER DERATING CURVE T4-LDS-0232, Rev. 1 (111957) Zener Voltage V Z FIGURE 2 CAPACITANCE vs. ZENER VOLTAGE (TYPICAL) (c)2011 Microsemi Corporation Page 4 of 5 1N5221B-1 thru 1N5281B-1 PACKAGE DIMENSIONS Ltr BD BL LD LL LL 1 Inch Min .055 .120 .018 1.000 Dimensions Millimeters Max Min Max .090 1.40 2.29 .200 3.05 5.08 .022 0.46 0.56 1.500 25.40 38.10 .050 1.27 Notes 3 3 4 NOTES: 1. Dimensions are in inch. 2. Millimeters are given for general information only. 3. Package contour optional within BD and length BL. Heat slugs, if any, shall be included within this cylinder but shall not be subject to minimum limit of BD. The BL dimension shall include the entire body including slugs. 4. W ithin this zone lead, diameter may vary to allow for lead finishes and irregularities other than heat slugs. 5. In accordance with ASME Y14.5M, diameters are equivalent to x symbology. T4-LDS-0232, Rev. 1 (111957) (c)2011 Microsemi Corporation Page 5 of 5