1N4728UR-1 MICROSEMI

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METALLURGICALLY BONDED GLASS SURFACE MOUNT 1.0 W ZENERS WWW.Microsemi .COM SCOTTSDALE DIVISION 1N4728UR-1 thru 1N4764AUR-1,e3 (or MLL4728A-1 thru MLL4764A-1,e3) 1N4728AUR-1 thru 1N4764AUR-1 DESCRIPTION APPEARANCE This surface mountable 1 watt Zener diode series is electrically equivalent to the 1N4728A thru 1N4764A registration in the DO-41 equivalent package except that it meets the JEDEC su rface mount outline DO-213AB and also includes enhanced internal contact design. It is an ideal selection for applications of high density and low parasitic requirements for voltage regulation. Standard voltage tolerance is +/-5% with tighter tolerances available down to 1%. With its gla ss hermetic qualities, it may also be used for high reliability applications when required by a source control drawing (SCD). DO-213AB IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com FEATURES APPLICATIONS / BENEFITS

  • Electrically similar to the JEDEC registered 1N4728 thru 1N4764 zener series
  • Regulates voltage over a broad operating current and temperature range
  • Zener voltages available 3.3V to 100V • Metallurgically enhanced internal contact design fro greater reliability and lower thermal resistance • Standard voltage tolerances are +/- 5% with “A” suffix and 10 % with no suffix identification • Wide selection from 3.3 to 100 V
  • Tight tolerances available in plus or minus 2% or 1% with C or D suffix respectively
  • Leadless package for surface mounting
  • Ideal for high density mounting
  • Options for screening in accordance with MIL-PRF- 19500 for JAN, JANTX, JANTXV, and JANS are available by adding MQ, MX, MV, or MSP prefixes respectively to part numbers.
  • Nonsensitive to ESD
  • Hermetically sealed glass package
  • Specified capacitance (see Figure 2)
  • Inherently radiation hard per MicroNote 050 • Surface mount equivalents also available as SMAJ4728A to SMAJ4764A and SMAJ4728A to SMAJ4764A
  • RoHS Compliant devices available by adding “e3” suffix
  • Plastic body axial-leaded Zener equivalents are also available as 1N4728A to 1N4764A MAXIMUM RATINGS MECHANICAL AND PACKAGING Microsemi Scottsdale Division Page 1Copyright © 2005 10-18-2005 REV A ,e3
  • Power dissipation at 25 º • CASE: Hermetically sealed DO-213AB glass MELF C: 1.0 watts (also see derating in Figure 1). • TERMINALS: Tin-Lead (Sn/Pb) or RohS Compliant annealed matte-Tin plating solderable per MIL-STD- 750, method 2026
  • Operating and Storage temperature: -65ºC to +175ºC
  • Thermal Resistance: 40 ºC/W junction to end cap, or 120º • POLARITY: Cathode indicated by band. Diode to be operated with the banded end positive with respect to the opposite end for Zener regulation C/W junction to ambient when mounted on FR4 PC board (1 oz Cu) with recommended footprint (see last page) o • MARKING: Cathode band only • Steady-State Power: 1.00 watts at T EC < 135 C, or 1.00 watts at TA < 55ºC when mounted on FR4 PC board and recommended footprint as described for thermal resistance (also see Figure 1)
  • TAPE & REEL optional: Standard per EIA-481-B with 12 mm tape, 1500 per 7 inch reel or 5000 per 13 inch reel (add “TR” suffix to part number)
  • Forward voltage @200 mA: 1.2 volts (maximum) • WEIGHT: 0.05 grams
  • Solder Temperatures: 260 ºC for 10 s (max) • See package dimensions & recommended mounting pad on last page 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503

METALLURGICALLY BONDED GLASS SURFACE MOUNT 1.0 W ZENERS Microsemi Scottsdale Division Page 2 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Copyright © 2005 10-18-2005 REV A WWW.Microsemi .COM SCOTTSDALE DIVISION 1N4728UR-1 thru 1N4764AUR-1,e3 (or MLL4728A-1 thru MLL4764A-1,e3) 1N4728AUR-1 thru 1N4764AUR-1,e3 ELECTRICAL CHARACTERISTICS @ TC = 30oC ZENER VOLTAGE (NOTE 4) VZ TEST CURRENT IZT MAXIMUM DYNAMIC IMPEDANCE (Note 2) ZZT @ IZT MAXIMUM REVERSE CURRENT IR @ VR TEST VOLTAGE VR MAXIMUM REGULATOR CURRENT TA = 50oC IZM MAXIMUM KNEE IMPEDANCE (NOTE2) ZZK @ IZK TEST CURRENT IZK MAXIMUM (SURGE) CURRENT (NOTE 3) IS TYPE NUMBER (NOTE 1 & 5) Volts mA Ohms μA Volts mA Ohms mA mA 1N4728AUR-1 1N4729AUR-1 1N4730AUR-1 1N4731AUR-1 3.3 3.6 3.9 4.3 100 100 276 252 234 217 400 400 400 400 1.0 1.0 1.0 1.0 1380 1260 1190 1070 1N4732AUR-1 1N4733AUR-1 1N4734AUR-1 1N4735AUR-1 4.7 5.1 5.6 6.2 193 178 162 146 500 550 600 700 1.0 1.0 1.0 1.0 970 890 810 730 1N4736AUR-1 1N4737AUR-1 1N4738AUR-1 1N4739AUR-1 6.8 7.5 8.2 9.1 3.5 4.0 4.5 5.0 133 121 110 100 700 700 700 700 1.0 0.5 0.5 0.5 660 605 550 500 1N4740AUR-1 1N4741AUR-1 1N4742AUR-1 1N4743AUR-1 7.6 8.4 9.1 9.9 700 700 700 700 0.25 0.25 0.25 0.25 454 414 380 344 1N4744AUR-1 1N4745AUR-1 1N4746AUR-1 1N4747AUR-1 15.5 12.5 11.4 12.2 13.7 15.2 700 700 750 750 0.25 0.25 0.25 0.25 304 285 250 225 1N4748AUR-1 1N4749AUR-1 1N4750AUR-1 1N4751AUR-1 11.5 10.5 9.5 8.5 16.7 18.2 20.6 22.8 750 750 750 1000 0.25 0.25 0.25 0.25 205 190 170 150 1N4752AUR-1 1N4753AUR-1 1N4754AUR-1 1N4755AUR-1 7.5 7.0 6.5 6.0 25.1 27.4 29.7 32.7 1000 1000 1000 1500 0.25 0.25 0.25 0.25 135 125 115 110 1N4756AUR-1 1N4757AUR-1 1N4758AUR-1 1N4759AUR-1 5.5 5.0 4.5 4.0 110 125 35.8 38.8 42.6 47.1 1500 1500 2000 2000 0.25 0.25 0.25 0.25 1N4760AUR-1 1N4761AUR-1 1N4762AUR-1 1N4763AUR-1 3.7 3.3 3.0 2.8 150 175 200 250 51.7 56.0 62.2 69.2 2000 2000 3000 3000 0.25 0.25 0.25 0.25 1N4764AUR-1 100 2.5 350 5 76.0 9 3000 0.25 45 NOTE 1: The type numbers shown with an “A” suffix have a +/-5% tolerance on the nominal Zener voltage. It is also available with suffix “C” for +/-2%, and “D” for +/-1%. The absence of a suffix letter denotes +/- 10% tolerance. NOTE 2: The Zener impedance is derived from the 60Hz 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 two points to ensure a sharp knee on the breakdown curve and eliminate unstable units. NOTE 3: The reverse surge current is measured at 25 o C ambient using a ½ square wave or equivalent sine wave pulse 1/120 second duration superimposed on IZT. NOTE 4: Voltage measurements to be performed 90 seconds after application of dc current. NOTE 5: This product series has also been previously identified as the MLL4728A-1 thru MLL4764A-1 series. This alternate name may still be used.

METALLURGICALLY BONDED GLASS SURFACE MOUNT 1.0 W ZENERS WWW.Microsemi .COM SCOTTSDALE DIVISION 1N4728UR-1 thru 1N4764AUR-1,e3 (or MLL4728A-1 thru MLL4764A-1,e3) 1N4728AUR-1 thru 1N4764AUR-1 GRAPHS STEADY-STATE POWER DERATING Power Dissipation (WATTS) TEC TA DP Temperature (oC) FIGURE 2 FIGURE 1 Power Derating Curve Where T is End Cap Temp EC and T A is Ambient Temperature on FR4 PC board. PACKAGE DIMENSIONS Microsemi Scottsdale Division Page 3Copyright © 2005 10-18-2005 REV A ,e3 INCHES MILLIMETERS INCHES mm PAD LAYOUT DIM MIN MAX MIN MAX 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503

Glass Diode Series Reliability & Qualification Data This is the reliability and qualification data for the glass axial lead and surface mount Zener, rectifier and Schottky series. Features Mechanical JAN/JANTX/JANTXV available for most Hermetically sealed, double slug glass Voltage range: 1.8 to 200 Volts Tin-Lead Plating .25 – 1.0 watt power rating DO-7, DO-35, DO-41, DO-213AA, DO-213AB Low noise, Low leakage and Cathode indicated by band Tight tolerance available Metallurgical bond available Maximum Ratings Operating Temperatures: -65° C to 200° C Storage Temperature: -65° C to 200° C Stress Results Moisture Classification Level 1 Package - No Drypack Required Hermetically sealed ESD Sensitivity Non-sensitive – No special handling required Estimated FIT 0.3 90% confidence, 70 ° C operating, 0.7 eV Temperature Cycle 0/39936@ 20 temp. cycles (-55° C to 175° C) Steady State Life 0/83704 @ 25° C – Tj 150° (1000) High Temperature Storage 0/675 @ 175° C (1000 Hours) GLASS1101 John Freeman Director of Engineering Bill Jones Director of Quality Control and Reliability Assurance The following series are covered: 1N4370-4372, 1N746-1N759, 1N962-1N992, 1N4099- 1N4135, 1N4614-1N4627, 1N4678-1N4717, 1N4728-1N4764, 1N5221-1N5281, 1N5518- SCOTTSDALE DIVISION

1N5546, 1N5817, 1N5819, 1N5728-1N5757, 1N5913-1N5956, 1N5985-1N6031, 1N4001– 1N4006 and all MLL, DL, UR AND –1 versions.