SMAJ4460 thru SMAJ4496 and SMAJ6485 thru SMAJ6491 1.5 Watt Zener Diodes SCOTTSDALE DIVISION This 1.5 watt zener series in a low-profile light-weight plastic surface mount configuration, with stress-relief J-bend contacts, meets or exceeds the electrical performance of the 1N4460 thru 1N4496 and 1N6485 thru 1N6491. It also provides double the overall surge performance by using a larger active die element. This includes ESD protection per IEC61000-4-2, EFT protection per IEC61000-4-4, and higher surge levels defined herein. The low-flat profile provides easier insertion or automatic handling compared to other MELF style packages. Its thermally efficient design lowers junction temperatures and extends operating temperature range before derating begins. Power derates to zero at 150°C for these plastic packages. DO-214BA or AC (SMAJ) IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com FEATURES • • • • • A P P L I C A T I O N S / B E N E FI T S Zener voltages: 3.3 volts to 200 volts Metallurgically bonded Reliability data per JESD22-A108, JESD22-A104, JESD22-A113-B, JESD22-A101-B, and JESD22-A102 Thermally efficient surface mount with J-bends for stress relief (flat handling surface for easier placement) Options for screening in accordance with MIL-PRF19500/406 for JAN, JANTX, JANTXV, and JANS are available by adding MQ, MX, MV, or MSP prefixes respectively to part numbers. For example, designate a MXSMAJ4460 for a JANTX screen. MAXIMUM RATINGS • • • • Operating temperature: -55°C to +150°C Storage temperature: -55°C to +150°C 1.5 watt steady-state maximum power Thermal resistance, R?JL = 15 °C/W W W W . Microsemi . C O M SURFACE MOUNT ZENER DESCRIPTION • For high reliability voltage regulation in low profile surface mount locations requiring easy placement and strain relief • Light weight for airborne or satellite applications • Superior surge quality to protect from ESD and EFT transients per IEC61000-4-2 and -4-4 and higher surge levels defined herein MECHANICAL AND PACKAGING • Molded epoxy package meets UL94V-0 • Terminals: solderable per MIL-STD-750 Method 2026. (max 260 °C for 10 sec.) • Body marked with P/N without SMAJ letters (ie. 4460, 4496, 6485, 4460, etc.) • Polarity is indicated by cathode band • Weight: 0.064 grams (approximate) • Tape & Reel packaging per EIA-481-2 with 12 mm tape and 2500 units per reel (13 inch reel) POWER DERATING – OUTLINE – MOUNTING PAD DIM DIMENSION A IS WITHIN DO-214BA BUT HIGHER THAN STANDARD JEDEC OUTLINES..DIMENSION B IS WIDER THAN BOTH JEDEC OUTLINES FOR LOWER THERMAL RESISTANCE Outline Mounting Pad Copyright 2001 MSCXXXX.PDF 4-07-03 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 SMAJ4460 – SMAJ4496 & SMAJ6485 – SMAJ6491 A B C D E F G DIMENSIONS MILLIMETERS INCHES MIN MAX MIN MAX .052 .103 1.32 2.62 .160 .180 4.06 4.57 .100 .110 2.54 2.79 .194 .216 4.93 5.49 .078 .115 1.98 2.92 .030 .060 0.76 1.52 -.005 -0.13 SMAJ4460 thru SMAJ4496 and SMAJ6485 thru SMAJ6491 1.5 Watt Zener Diodes SCOTTSDALE DIVISION ZENER VOLTAGE VZ @ IZT DYNAMIC IMPEDANCE ZZT = IZT KNEE IMPEDANCE ZZK = IZ K TEST CURRENT IZK mA OHMS OHMS mA MAX MAX 76.0 69.0 64.0 58.0 53.0 49.0 45.0 40.0 37.0 34.0 31.0 10 10 9 9 8 7 5 4 2.5 2.5 3 400 400 400 400 500 500 600 200 200 400 400 10 11 12 13 15 16 18 20 22 24 28.0 25.0 23.0 21.0 19.0 17.0 15.5 14.0 12.5 11.5 10.5 4 5 6 7 8 9 10 11 12 14 16 500 500 550 550 550 600 600 650 650 650 700 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.5 0.5 0.5 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 SMAJ4475 SMAJ4476 SMAJ4477 SMAJ4478 SMAJ4479 SMAJ4480 SMAJ4481 SMAJ4482 SMAJ4483 SMAJ4484 SMAJ4485 27 30 33 36 39 43 47 51 56 62 68 9.5 8.5 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.7 18 20 25 27 30 40 50 60 70 80 100 700 750 800 850 900 950 1000 1100 1300 1500 1700 SMAJ4486 SMAJ4487 SMAJ4488 SMAJ4489 SMAJ4490 SMAJ4491 SMAJ4492 SMAJ4493 SMAJ4494 SMAJ4495 SMAJ4496 75 82 91 100 110 120 130 150 160 180 200 3.3 3.0 2.8 2.5 2.0 2.0 1.9 1.7 1.6 1.4 1.2 130 160 200 250 300 400 500 700 1000 1300 1500 2000 2500 3000 3100 4000 4500 5000 6000 6500 7000 8000 MICROSEMI PART NUMBER REVERSE CURRENT IR @ VR TEST VOLTAGE VR MAXIMUM CONTINOUS CURRENT µA VOLTS mA A A 50 50 35 5 4 1 .50 10 5 1 .50 1.0 1.0 1.0 1.0 1.0 1.0 2.0 3.72 4.08 4.50 4.92 433 397 366 332 304 280 255 230 210 191 174 10 9 7.8 8.4 7.8 7.2 6.6 6.0 5.4 5 4.6 4.2 3.8 3.4 .30 .30 .30 .20 .05 .05 .05 .05 .05 .05 .05 5.46 8.0 8.8 9.6 10.4 12.0 12.8 14.4 16.0 17.6 19.2 157 143 130 119 110 95 90 79 71 65 60 6.8 6 5.2 4.8 4.4 3.6 3.2 2.8 2.4 2.2 1.8 3.2 2.8 2.6 2.4 2.2 1.9 1.6 1.58 1.42 1.3 1.2 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .05 .05 .05 .05 .05 .05 .05 .05 .025 .025 .025 21.6 24.0 26.4 28.8 31.2 34.4 37.6 40.8 44.8 49.6 54.4 53 48 43 40 37 33 30 28 26 23 21 1.6 1.5 1.32 1.20 1.08 .96 .90 .84 .78 .70 .64 1.06 .96 .86 .80 .74 .66 .60 .56 .52 .46 .42 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .025 .025 .025 .025 .025 .025 .025 .025 .025 .025 .025 60.4 65.6 72.8 80.0 88.0 96.0 104 120 128 144 160 19 17 16 14 13 12 11 9.5 8.9 7.9 7.2 .58 .52 .46 .40 .38 .36 .32 .28 .24 .20 .16 .38 .34 .32 .28 .26 .24 .22 .19 .178 .158 VOLTS MAXIMUM MAXIMUM SURGE SURGE CURRENT at CURRENT at 8.3 ms square 8.3 ms square wave wave TA = 25 °C TA = 100 °C NOM. SMAJ6485 SMAJ6486 SMAJ6487 SMAJ6488 SMAJ6489 SMAJ6490 SMAJ6491 SMAJ4460 SMAJ4461 SMAJ4462 SMAJ4463 SMAJ4464 SMAJ4465 SMAJ4466 SMAJ4467 SMAJ4468 SMAJ4469 SMAJ4470 SMAJ4471 SMAJ4472 SMAJ4473 SMAJ4474 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.5 8.2 9.1 MAX .144 Notes: 1. 2. 3. 4. No suffix indicates a ±5% tolerance on nominal V Z , C denotes a ±2% tolerance, and D denotes a ±1% tolerance. Zener voltage (V z) is measured at TL = 30 °C. Voltage measurement to be performed 90 seconds after application of dc current. 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 or IZK ). V f at 200 mA 1.2 volts maximum and V f at 1.0 A 1.5 volts maximum. Copyright 2001 MSCXXXX.PDF 4-07-03 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 SMAJ4460 – SMAJ4496 & SMAJ6485 – SMAJ6491 TEST CURRENT IZT W W W . Microsemi . C O M ELECTRICAL CHARACTERISTICS @ 25 °C (unless otherwise specified)