JANTXV1N979C-1

1N957B-1 – 1N992B-1 Available on commercial versions Qualified Levels*: JAN, JANTX, and JANTXV Silicon 500 mW Zener Diodes Qualified per MIL-PRF-19500/117 DESCRIPTION The popular 1N957B-1 through 1N992B-1 series of 0.5 watt Zener voltage regulators provides a selection from 6.8 to 200 volts in a standard 5%, 2% and 1% tolerance versions. These axial-leaded glass DO-35 Zeners feature an internal metallurgical bond and are available in military qualified and commercial RoHS compliant versions. Military qualified versions are available on the 1N962B-1 through 1N992B-1 range of part numbers. Important: For the latest information, visit our website http://www.microsemi.com. FEATURES • • • JEDEC registered 1N957B to 1N992B number series. Internal metallurgical bond. *JAN, JANTX, and JANTXV qualifications are available per MIL-PRF-19500/117 for part numbers 1N962B-1 thru 1N992B-1. • Upscreening is available in reference to MIL-PRF-19500 for the range of 1N957B-1 through 1N961B-1. (See part nomenclature for all available options.) • DO-35 (DO-204AH) Package Also available in: DO-213AA package (MELF surface mount) 1N957BUR-1 – 1N992BUR-1 RoHS compliant versions available (commercial grade only). APPLICATIONS / BENEFITS • • • • • • • Regulates voltage over a broad operating current and temperature range. Extensive selection from 6.8 to 200 V. Standard voltage tolerance is ± 5% with optional tighter tolerances of ± 2% or 1%. Flexible axial-lead mounting terminals. 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-Lead @ .375 inch (9.53 mm) lead length from body Thermal Resistance Junction-to-Ambient when (1) mounted on PCB Steady-State Power Dissipation (2) @ T L = +50°C .375 inch (9.53 mm) from body @ T A = 55°C mounted on PCB Forward Voltage @ I F = 200 mA 1N957 – 1N985 1N986 – 1N992 Solder Temperature @ 10 s NOTES: Symbol T J and T STG R ӨJL Value -65 to +175 250 Unit ºC ºC/W R ӨJA 300 ºC/W PD 0.5 0.4 W VF 1.1 1.3 260 V T SP o C 1. See figures 1 and 2 for derating curves. T A = +75°C on an FR4 PC board with 1 oz copper metalization. 2. Both ends of case or diode body to heat sink at L = .375 inch (9.53 mm). Derate I Z to 0.0 mA at +175°C. T4-LDS-0287, Rev. 1 (121795) ©2012 Microsemi Corporation 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 Page 1 of 8 1N957B-1 – 1N992B-1 MECHANICAL and PACKAGING • • • • • • • CASE: Hermetically sealed axial-lead glass DO-35 (DO-204 AH) package. TERMINALS: Tin-lead (Sn/Pb) or RoHS compliant annealed matte-tin plating (on commercial grade only). Solderable per MILSTD-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 1N957B-1 – 1N961B-1 only: 1N957 B -1 (e3) JEDEC type number (see Electrical Characteristics table) RoHS Compliance e3 = RoHS compliant Blank = non-RoHS compliant Zener Voltage Tolerance B = 5% C = 2% D = 1% Metallurgically Bonded 1N962B-1 – 1N992B-1 only: JAN 1N962 B -1 Reliability Level JAN = JAN level JANTX = JANTX level JANTXV = JANTXV level Blank = Commercial (e3) 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 B = 5% C = 2% D = 1% T4-LDS-0287, Rev. 1 (121795) ©2012 Microsemi Corporation Page 2 of 8 1N957B-1 – 1N992B-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-0287, Rev. 1 (121795) ©2012 Microsemi Corporation Page 3 of 8 1N957B-1 – 1N992B-1 ELECTRICAL CHARACTERISTICS JEDEC TYPE NUMBER (NOTE 1) 1N957B-1 1N958B-1 1N959B-1 1N960B-1 1N961B-1 1N962B-1 1N963B-1 1N964B-1 1N965B-1 1N966B-1 1N967B-1 1N968B-1 1N969B-1 1N970B-1 1N971B-1 1N972B-1 1N973B-1 1N974B-1 1N975B-1 1N976B-1 1N977B-1 1N978B-1 1N979B-1 1N980B-1 1N981B-1 1N982B-1 1N983B-1 1N984B-1 1N985B-1 1N986B-1 1N987B-1 1N988B-1 1N989B-1 1N990B-1 1N991B-1 1N992B-1 NOMINAL ZENER VOLTAGE (NOTE 2) VZ Volts 6.8 7.5 8.2 9.1 10 11 12 13 15 16 18 20 22 24 27 30 33 36 39 43 47 51 56 62 68 75 82 91 100 110 120 130 150 160 180 200 ZENER TEST CURRENT I ZT mA 18.5 16.5 15.0 14.0 12.5 11.5 10.5 9.5 8.5 7.8 7.0 6.2 5.6 5.2 4.6 4.2 3.8 3.4 3.2 3.0 2.7 2.5 2.2 2.0 1.8 1.7 1.5 1.4 1.3 1.1 1.0 0.95 0.85 0.80 0.68 0.65 MAXIMUM ZENER IMPEDANCE Z ZT ZZ Ohms 4.5 5.5 6.5 7.5 8.5 9.5 11.5 13.0 16 17 21 25 29 33 41 49 58 70 80 93 105 125 150 185 230 270 330 400 500 750 900 1100 1500 1700 2200 2500 Z ZK @ I ZK Ohms µA 700 250 700 250 700 250 700 250 700 250 700 250 700 250 700 250 700 250 700 250 750 250 750 250 750 250 750 250 750 250 1000 250 1000 250 1000 250 1000 250 1000 250 1500 250 1500 250 2000 250 2000 250 2000 250 2000 250 3000 250 3000 250 3000 250 4000 250 4500 250 5000 250 6000 250 6500 250 7100 250 8000 250 MAXIMUM DC ZENER CURRENT (NOTE 4) I ZM mA 55 50 45 41 38 35 32 30 26 25 21 19 17 16 14 13 12 11 9.1 8.8 7.9 7.4 6.9 6.0 5.5 5.1 4.6 4.2 3.7 3.3 3.1 2.7 2.4 2.2 2.0 1.8 MAXIMUM SURGE CURRENT (NOTE 5) I ZSM mA 300 275 250 225 200 590 540 500 433 406 361 325 295 271 240 216 197 180 166 151 138 127 116 105 95 86 79 71 65 59 54 50 43 40 36 32 MAXIMUM REVERSE LEAKAGE CURRENT IR @ VR µA Volts 150 5.2 75 5.7 50 6.2 25 6.9 10 7.6 1.0 8.4 1.0 9.1 0.5 9.9 0.5 11 0.5 12 0.5 14 0.5 15 0.5 17 0.5 18 0.5 21 0.5 23 0.5 25 0.5 27 0.5 30 0.5 33 0.5 36 0.5 39 0.5 43 0.5 47 0.5 52 0.5 56 0.5 62 0.5 69 0.5 76 0.5 84 0.5 91 0.5 99 0.5 114 0.5 122 0.5 137 0.5 152 MAXIMUM TEMPERATURE COEFFICIENT α VZ %/°C +0.050 +0.058 +0.065 +0.068 +0.075 +0.073 +0.076 +0.079 +0.082 +0.083 +0.085 +0.086 +0.087 +0.088 +0.090 +0.091 +0.092 +0.093 +0.094 +0.095 +0.095 +0.096 +0.096 +0.097 +0.097 +0.098 +0.098 +0.099 +0.110 +0.110 +0.110 +0.110 +0.110 +0.110 +0.110 +0.110 NOTES: 1. The JEDEC type numbers shown (B suffix) have a ± 5% tolerance on nominal Zener voltage. The suffix C will have ± 2% tolerance; and suffix D will have ± 1% tolerance. 2. Zener voltage (V Z ) is measured after the test current has been applied for 20 ± 5 seconds. The device shall be suspended by its leads with the inside edge of the mounting clips between 0.375” and 0.500” from the body. Mounting clips shall be maintained at temperature of 25 ± 8/ 2 °C. 3. The Zener impedance is derived when a 60 cycle 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 2 points to ensure a sharp knee on the breakdown curve and to eliminate unstable units. See MicroNote 202 for variation in dynamic impedance with different Zener currents. 4. The values of I ZM are calculated for a ± 5% tolerance on nominal Zener voltage. Allowance has been made for the rise in Zener voltage above V ZT which results from Zener impedance and the increase in junction temperature as power dissipation approaches 400 mW. In the case of individual diodes I ZM is that value of current which results in a dissipation of 400 mW at 75°C lead temperature at 3/8” from body. 5. The surge for I ZSM is a square wave or equivalent half-sine wave pulse of 1/120 sec. duration. T4-LDS-0287, Rev. 1 (121795) ©2012 Microsemi Corporation Page 4 of 8 1N957B-1 – 1N992B-1 DC Operations Maximum Rating (mW) GRAPHS DC Operations Maximum Rating (mW) T L (ºC) (Leads .375”) FIGURE 1 Temperature-Power Derating Curve T L (ºC) (PCB) FIGURE 2 Temperature-Power Derating Curve (PCB mount) T4-LDS-0287, Rev. 1 (121795) ©2012 Microsemi Corporation Page 5 of 8 1N957B-1 – 1N992B-1 Theta (°C/W) GRAPHS Theta (°C/W) Time (s) FIGURE 3 Thermal Impedance PCB mount Time (s) FIGURE 4 Thermal Impedance T4-LDS-0287, Rev. 1 (121795) ©2012 Microsemi Corporation Page 6 of 8 1N957B-1 – 1N992B-1 MAXIMUM POWER DISSIPATION (mW ) GRAPHS LEAD TEMPERATURE (ºC) (At described lead length) Inches .000 .125 .250 .375 Millimeters 0.00 3.18 6.35 9.53 FIGURE 5 Maximum Power vs Lead Temperature And Lead Length. T4-LDS-0287, Rev. 1 (121795) ©2012 Microsemi Corporation Page 7 of 8 1N957B-1 – 1N992B-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 LD. The BL dimension shall include the entire body including slugs. 4. Within LL 1 lead, diameter may vary to allow for for flash, lead finish build-up, and minor irregularities other than heat slugs. 5. In accordance with ASME Y14.5M, diameters are equivalent to Φx symbology. T4-LDS-0287, Rev. 1 (121795) ©2012 Microsemi Corporation Page 8 of 8