1N3305 thru 1N3350B and 1N4549B thru 1N4556B 50 WATT ZENER DIODES SCOTTSDALE DIVISION APPEARANCE These high power 50 W Zener diodes represented by the JEDEC registered 1N3305 thru 1N3350B and 1N4549 thru 1N4556B series provide voltage regulation in a selection over a 3.9 V to 200 V broad range of voltages. They may be operated up to 50 W with adequate mounting and heat sinking with their low thermal resistance. These Zeners are also available in JAN, JANTX, JANTXV military qualifications. Microsemi also offers numerous other Zener products to meet higher and lower power applications. DO- 5 IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com FEATURES • • • • • • • • • JEDEC registered 1N3305 thru 1N3350B and 1N4549 thru 1N4556B Internal solder bond construction Hermetically sealed (welded) Zener Voltage 3.9V to 200V. Also available in JAN, JANTX, and JANTXV qualifications per MIL-PRF-19500/358 by adding the JAN, JANTX, or JANTXV prefixes to part numbers for desired level of screening; (e.g. JANTX1N3305B, JANTXV1N3318B, etc. Standard polarity is anode to case Reverse polarity with cathode to case by designating R suffix in part number, e.g. 1N3305RB, etc. Consult factory for surface mount equivalents • • • • • MECHANICAL AND PACKAGING o o Junction & Storage Temperatures: -65 C to +175 C DC Power Dissipation: 50 watts at TC < 75 oC Power Derating: 0.5 W/oC above 75oC Forward Voltage @ 10 A: 1.5 Volts THERMAL RESISTANCE: 2.0 oC/W maximum junction to hexagonal base (1.5 oC/W typical) Solder temperatures: 260 oC for 10 s (max) • • • • • • Copyright 2003 11-12-2003 REV A Regulates voltage over a broad operating current and temperature range Standard voltage tolerances are +/- 5% with B suffix, +/-10% with an A suffix, and +/-20% with no suffix Consult factory for +/-2% or +/-1% with a C or D suffix respectively Reverse polarity available Nonsensitive to ESD per MIL-STD-750 Method 1020 Inherently radiation hard as described in Microsemi MicroNote 050 CASE: Industry Standard DO-5 (DO-203AB), 11/16 inch hexagonal stud with 1/4-28 threads welded hermetically sealed metal and glass FINISH: All external surfaces are corrosion resistant and terminal solderable. POLARITY: Standard Polarity units are connected anode to case. Reverse polarity (cathode to case) is indicated by Suffix R in part number WEIGHT: 15 grams MOUNTING HARDWARE: Consult factory for optional insulator, bushing, solder terminal, washers and nut See package dimensions on last page Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 1 1N3305 – 1N3350B 350B 1N4549B – 1N4556B • (DO-203AB) APPLICATIONS / BENEFITS MAXIMUM RATINGS • • • • • WWW . Microsemi .C OM DESCRIPTION 1N3305 thru 1N3350B and 1N4549B thru 1N4556B 50 WATT ZENER DIODES SCOTTSDALE DIVISION ZENER TEST CURRENT (IZT) mA † 3,200 2,900 2,650 2,450 2,250 2,000 1,850 1,650 1,850 1,700 1,500 1,370 1,200 1,100 1,000 960 890 830 780 740 700 660 630 570 520 500 460 420 380 350 320 290 280 270 250 245 240 220 200 180 170 150 140 120 120 110 100 95 90 85 80 70 68 65 MAX. DYNAMIC IMPEDANCE (Note 3) † ZZT @ IZT OHMS 0.16 0.16 0.12 0.12 0.12 0.14 0.16 0.24 0.20 0.30 0.40 0.50 0.60 0.80 1.00 1.10 1.20 1.40 1.60 1.80 2.00 2.20 2.40 2.50 2.60 2.70 2.80 3.00 3.20 3.50 4.00 4.50 4.50 5.00 5.00 5.20 5.50 6.00 7.00 8.00 9.00 11.00 15.00 20.00 25.00 30.00 40.00 50.00 60.00 75.00 80.00 85.00 90.00 100.00 ZZK @ IZK = 5 mA OHMS 400 500 600 650 900 1,000 200 100 70 70 70 70 80 80 80 80 80 80 80 80 80 80 80 80 80 90 90 90 90 90 90 90 100 100 100 100 100 110 120 140 150 160 180 200 210 220 240 275 325 400 450 500 525 600 MAX. DC ZENER CURRENT (IZM) mA 11,900 10,650 9,700 8,900 8,100 7,300 6,650 6,050 6,600 5,900 5,200 4,800 4,300 3,900 3,800 3,300 3,000 2,800 2,650 2,500 2,300 2,200 2,100 1,900 1,750 1,550 1,500 1,400 1,300 1,150 1,050 975 930 880 830 810 790 740 660 600 540 490 420 400 380 365 335 310 290 270 250 230 220 200 MAX. REVERSE CURRENT** IR(max) @ VR µA 150 150 100 20 20 20 10 10 300 125 50 25 25 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 VOLTS 0.5 0.5 1.0 1.0 1.0 2.0 2.0 3.0 4.5 5.0 5.4 6.1 6.7 8.4 9.1 9.9 11.4 11.4 12.2 13.0 13.7 13.7 15.2 16.7 18.2 18.2 20.6 22.8 25.1 27.4 29.7 32.7 32.7 35.8 38.8 38.8 42.6 42.6 47.1 51.7 56.0 62.2 69.2 76.0 83.0 83.0 91.2 99.8 114.0 114.0 121.6 121.6 136.8 152.0 TYPICAL TEMP. COEFF. αVZ o %/ C -0.046 -0.033 -0.015 +/-0.010 +0.030 +0.049 +0.053 +0.057 0.040 0.045 0.048 0.050 0.055 0.060 0.065 0.065 0.070 0.070 0.070 0.075 0.075 0.075 0.075 0.080 0.080 0.080 0.085 0.085 0.085 0.085 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.090 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.095 0.100 *JEDEC Registered Data. **Not JEDEC Data. †Have JAN and JANTX and TXV Qualifications to MIL-S-19500/358. Copyright 2003 11-12-2003 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 1N3305 – 1N3350B 1N4549B – 1N4556B JEDEC TYPE NO. (Note 1) †1N4549B †1N4550B †1N4551B †1N4552B †1N4553B †1N4554B 1N4555B 1N4556B †1N3305B †1N3306B †1N3307B †1N3308B †1N3309B †1N3310B †1N3311B †1N3312B 1N3313B †1N3314B †1N3315B 1N3316B †1N3317B 1N3318B †1N3319B †1N3320B †1N3321B 1N3322B †1N3323B †1N3324B †1N3325B †1N3326B †1N3327B †1N3328B 1N3329B †1N3330B 1N3331B †1N3332B 1N3333B †1N3334B †1N3335B †1N3336B †1N3337B †1N3338B †1N3339B †1N3340B 1N3341B †1N3342B †1N3343B †1N3344B 1N3345B †1N3346B †1N3347B 1N3348B †1N3349B †1N3350B NOMINAL ZENER VOLTAGE VZ @ IZT Volts (Note 2) † 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.5 6.8 7.5 8.2 9.1 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 22.0 24.0 25.0 27.0 30.0 33.0 36.0 39.0 43.0 45.0 47.0 50.0 51.0 52.0 56.0 62.0 68.0 75.0 82.0 91.0 100.0 105.0 110.0 120.0 130.0 140.0 150.0 160.0 175.0 180.0 200.0 WWW . Microsemi .C OM *ELECTRICAL CHARACTERISTICS @ 30oC Case Temperature 1N3305 thru 1N3350B and 1N4549B thru 1N4556B 50 WATT ZENER DIODES SCOTTSDALE DIVISION See further notes on following page 1. When using JEDEC numbers an R suffix should be used to signify reversed polarity. The suffixes A and B indicate tolerances of 10% and 5% respectively. No suffix or just R denotes +/-20% tolerance. Example: 1N3319RB is a REVERSED polarity, 20 volt unit having a +/-5% tolerance on Zener Voltage. 2. 3. Zener Voltage (VZ) is measured with junction in thermal equilibrium with 30 C stud temperature. The Zener impedance is derived from the 60 cycle ac voltage, which results when an ac current having an rms value equal to 10% of the dc zener current (IZT or IZK) is superimposed on IZT or IZK. Zener impedance is measured at 2 points to ensure a sharp knee on the breakdown curve and to eliminate unstable units. A curve showing the variation of zener impedance vs. zener current for three representative types is shown in Figure 2. Also see Microsemi MicroNote 202. o Rated Power Dissipation - Watts OUTLINE AND CIRCUIT WWW . Microsemi .C OM NOTES: o Stud Temperature C FIGURE 1 Power Derating Curve FIGURE 2 Typical Zener Impedance vs. Zener Current PACKAGE DIMENSIONS 1N3305 – 1N3350B 350B 1N4549B – 1N4556B All Dimensions in: INCH mm Copyright 2003 11-12-2003 REV A Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 3