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SMBG4728 thru SMBG4764A SMBJ4728 thru SMBJ4764A SILICON 2.0 Watt ZENER DIODES
SCOTTSDALE DIVISION
DESCRIPTION The SMBJ4728A-4764A and SMBG4728A-4764A series of surface mount 2.0 watt Zeners provides voltage regulation in a selection from 3.3 to 100 volts with different tolerances as identified by suffix letter on the part number. This surface mount product series with lower thermal resistance features is equivalent to the JEDEC registered 1N4728 thru 1N4764A with identical electrical characteristics except it is rated at 2.0 W instead of 1.0 W. It is available in J-bend design (SMBJ) with the DO-214AA package for greater PC board mounting density or in Gull-wing design (SMBG) in the DO-215AA for visible solder connections. Microsemi also offers numerous other Zener products to meet higher and lower power applications.
IMPORTANT: For the most current data, consult MICROSEMI's website: http://www.microsemi.com
APPEARANCE
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NOTE: All SMB series are equivalent to prior SMS package identifications.
FEATURES
* * * * * * Surface mount equivalent to 1N4728 to 1N4764A Ideal for high-density and low-profile mounting Zener voltage available 3.3V to 200V Standard voltage tolerances are plus/minus 5% with A suffix and 10 % with no suffix identification Tight tolerances available in plus or minus 2% or 1% with C or D suffix respectively Options for screening in accordance with MIL-PRF19500 for JAN, JANTX, JANTXV, and JANS are available by adding MQ, MX, MV, or MSP prefixes respectively to part numbers. * * *
APPLICATIONS / BENEFITS
Regulates voltage over a broad operating current and temperature range Wide selection from 3.3 to 100 V Popular DO-214AA or DO-215AA packages and footprints for either high density J-bend or Gull-wing designs for visible solder joints Nonsensitive to ESD per MIL-STD-750 Method 1020 Moisture classification: Level 1 per IPC/JEDEC JSTD-020B with no dry pack required
* *
MAXIMUM RATINGS
* * * Power dissipation at 25 C: 2.0 watts (also see derating in Figure 1). Operating and Storage temperature: -65C to +150C Thermal Resistance: 35 C/W junction to lead, or 100 C/W junction to ambient when mounted on FR4 PC board (1oz Cu) with recommended footprint (see last page) Steady-State Power: 2 watts at TL < 80oC, or 1.25 watts at TA = 25C when mounted on FR4 PC board with recommended footprint (also see Figure 1) Forward voltage @200 mA: 1.2 volts (maximum) Solder Temperatures: 260 C for 10 s (maximum)
MECHANICAL AND PACKAGING
* CASE: Void-free transfer molded thermosetting epoxy body meeting UL94V-0 * TERMINALS: Gull-wing or C-bend (modified Jbend) leads, tin-lead plated solderable per MIL-STD750, method 2026 * POLARITY: Cathode indicated by band. Diode to be operated with the banded end positive with respect to opposite end for Zener regulation * MARKING: Includes part number without prefix (e.g. 4728A, 4734C, 4764D, etc.) * TAPE & REEL option: Standard per EIA-481-1-A with 12 mm tape, 750 per 7 inch reel or 2500 per 13 inch reel (add "TR" suffix to part number) * WEIGHT: 0.1 grams * See package dimensions on last page
*
SMBG & J4728 thru 4764A
* *
Copyright 2002 8-21-2003 REV C
Microsemi
Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
SMBG4728 thru SMBG4764A SMBJ4728 thru SMBJ4764A SILICON 2.0 Watt ZENER DIODES
SCOTTSDALE DIVISION
ELECTRICAL CHARACTERISTICS*
JEDEC TYPE NUMBER (Note 1)
GULL-WING LEAD SMBG4728A SMBG4729A SMBG4730A SMBG4731A SMBG4732A SMBG4733A SMBG4734A SMBG4735A SMBG4736A SMBG4737A SMBG4738A SMBG4739A SMBG4740A SMBG4741A SMBG4742A SMBG4743A SMBG4744A SMBG4745A SMBG4746A SMBG4747A SMBG4748A SMBG4749A SMBG4750A SMBG4751A SMBG4752A SMBG4753A SMBG4754A SMBG4755A SMBG4756A SMBG4757A SMBG4758A SMBG4759A SMBG4760A SMBG4761A SMBG4762A SMBG4763A SMBG4764A C-BEND (MOD. "J") SMBJ4728A SMBJ4729A SMBJ4730A SMBJ4731A SMBJ4732A SMBJ4733A SMBJ4734A SMBJ4735A SMBJ4736A SMBJ4737A SMBJ4738A SMBJ4739A SMBJ4740A SMBJ4741A SMBJ4742A SMBJ4743A SMBJ4744A SMBJ4745A SMBJ4746A SMBJ4747A SMBJ4748A SMBJ4749A SMBJ4750A SMBJ4751A SMBJ4752A SMBJ4753A SMBJ4754A SMBJ4755A SMBJ4756A SMBJ4757A SMBJ4758A SMBJ4759A SMBJ4760A SMBJ4761A SMBJ4762A SMBJ4763A SMBJ4764A
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ZENER VOLTAGE
TEST CURRENT
(Vz)
(Note 4) VOLTS
3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 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
(IZT)
mA
76 69 64 58 53 49 45 41 37 34 31 28 25 23 21 19 17 15.5 14 12.5 11.5 10.5 9.5 8.5 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.7 3.3 3.0 2.8 2.5
MAXIMUM DYNAMIC IMPEDANCE
MAXIMUM REVERSE CURRENT
TEST VOLTAGE
(ZZT @ IZT)
(Note 2) OHMS
10 10 9 9 8 7 5 2 3.5 4.0 4.5 5.0 7 8 9 10 14 16 20 22 23 25 35 40 45 50 60 70 80 95 110 125 150 175 200 250 350
(IR @ VR)
A
100 100 50 10 10 10 10 10 10 10 10 10 10 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
(VR)
VOLTS
1 1 1 1 1 1 2 3 4 5 6 7 7.6 8.4 9.1 9.9 11.4 12.2 13.7 15.2 16.7 18.2 20.6 22.8 25.1 27.4 29.7 32.7 35.8 38.8 42.6 47.1 51.7 56.0 62.2 69.2 76.0
MAXIMUM REGULATOR CURRENT TA = 50oC mA
276 252 234 217 193 178 162 146 133 121 110 100 91 83 76 69 61 57 50 45 41 38 34 30 27 25 23 22 19 18 16 14 13 12 11 10 9
MAXIMUM KNEE IMPEDANCE
TEST CURRENT
(IZM)
(ZZK @ IZK)
(Note 2) OHMS
400 400 400 400 500 550 600 700 700 700 700 700 700 700 700 700 700 700 750 750 750 750 750 1000 1000 1000 1000 1500 1500 1500 2000 2000 2000 2000 3000 3000 3000
(IZK)
mA
1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.5 0.5 0.5 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25
MAXIMUM (SURGE) CURRENT (Note 3) mA
1380 1260 1190 1070 970 890 810 730 660 605 550 500 454 414 380 344 304 285 250 225 205 190 170 150 135 125 115 110 95 90 80 70 65 60 55 50 45
(IS)
*JEDEC Registered Data NOTES:
1. 2. 3. 4. The JEDEC type numbers shown with an A suffix have a 5% tolerance on nominal zener voltage. No suffix signifies a 10% tolerance, C signifies 2%, and D signifies 1% tolerance. Also add a P suffix for designating plastic construction (or G suffix for glass body). 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 (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. See MicroNote 202 for zener impedance variation with different operating currents. o The reverse surge current is measured at 25 C ambient using a square wave or equivalent half-sine wave pulse 1/120 second duration superimposed on IZT. Zener voltage (VZ) is measured at TL = 25C (+8, -2C) and 90 seconds after application of dc current.
SMBG & J4728 thru 4764A
Copyright 2002 8-21-2003 REV C
Microsemi
Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2
SMBG4728 thru SMBG4764A SMBJ4728 thru SMBJ4764A SILICON 2.0 Watt ZENER DIODES
SCOTTSDALE DIVISION
GRAPHS
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TL
TA
on FR4 PC board
TEMPERATURE COEFFICIENT mV/oC
RATED POWER DISSIPATION - W
TL, LEAD TEMP. ( C) or TA on FR4 PC Board
o
NOMINAL ZENER VOLTAGE (VOLTS)
FIGURE 1 Power Derating Curve
FIGURE 2 Temp. Coeff. vs. Zener Voltage
FIGURE 3 Typical Capacitance vs. Voltage for Representative Types
PACKAGE DIMENSIONS & PAD LAYOUT
SMBJ
A MIN MAX MIN MAX
.077 .083 1.96 2.10
SMBG
B
.160 .180 4.06 4.57
C
.130 .155 3.30 3.94
D
.205 .220 5.21 5.59
E
.075 .095 1.90 2.41
F
.235 .255 5.97 6.48
K
.015 .030 .381 .762
L
.030 .060
DIMENSIONS IN MILLIMETERS
.760 1.52 0
SMBG & J4728 thru 4764A
A B C A B C
INCHES 0.320 0.085 0.110 INCHES .260 .085 .110
mm 8.13 2.16 2.79 mm 6.60 2.16 2.79
SMBG
SMBJ
Copyright 2002 8-21-2003 REV C
Microsemi
Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 3

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