Features
l
For surface mount application (flat handing surface for
Accurate placement)
l
3.3 thru 100 Volt Voltage Range
l
High Surge Current Rating
l
Higher Voltages Available
l
Available on Tape and Reel
Mechanical Data
l
CASE: JEDEC DO-214AC molded plastic body over
passivated chip
l
Terminals solderable per MIL-STD-750, Method 2026
l
Polarity is indicated by cathode band.
l
Maximum temperature for soldering: 260
o
C for 10 seconds.
l
For surface mount applications with flame retardent epoxy
Meeting UL94V-0
Maximum Ratings @ 25
o
C Unless Otherwise Specified
Peak Surge
Current
I
S
See Table 1
Maximum
Forward
Voltage
V
F
1.2V
(Note: 1)
Steady State
Power
Dissipation
P
(AV)
1.0W
(Note: 2,3)
Operation And
Storage
Temperature
T
J
, T
STG
-55
o
C to
+150
o
C
*
NOTES:
1.
Forward Current @ 200mA.
2.
Mounted on 4.0mm
2
copper pads to each terminal.
3.
Lead temperature at 100
o
C or less. Derate linearly
above 100
o
C to zero power at 150
o
C.
SMAJ4728
THRU
SMAJ4764
Silicon
1 Watt
Zener Diodes
DO-214AC
(SMAJ) (High Profile)
H
J
E
F
G
A
B
D
C
Cathode Band
DIMENSIONS
INCHES
MM
DIM
MIN
MAX
MIN
MAX
NOTE
A .078 .116 1.98 2.95
B .067 .089 1.70 2.25
C .002 .008 .05 .20
D --- .02 --- .51
E .035 .055 .89 1.40
F .065 .096 1.65 2.45
G .205 .224 5.21 5.69
H .160 .180 4.06 4.57
J .100 .112 2.57 2.84
0.070"
0.090"
0.085"
SUGGESTED SOLDER
PAD LAYOUT
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omponents
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Revision: 3 2003/04/30
SMAJ4728 thru SMAJ4764
Electrical Characteristics @ 25
o
C Unless Otherwise Specified
ZENER
VOLTAGE
Vz
TEST
CURRENT
Izt
MAXIMUM
DYNAMIC
IMPEDANCE
Zzt @ Izt
MAXIMUM
REVERSE
CURRENT
Ir @ Vr
TEST
VOLTAGE
Vr
MAXIMUM
REGULATOR
CURRENT
Izm
Ta=50
o
C
MAXIMUM
KNEE
IMPEDANCE
Zzk @ Izk
TEST
CURRENT
Izk
MAXIMUM
SURGE
CURRENT
Is
MCC PART
NUMBER
VOLTS
mA
OHMS
uA
VOLTS
mA
OHMS
MA
mA
SMAJ4728 3.3 76 10 100 1 276 400 1.0 1380
SMAJ4729 3.6 69 10 100 1 252 400 1.0 1260
SMAJ4730 3.9 64 9 50 1 234 400 1.0 1190
SMAJ4731 4.3 58 9 10 1 217 400 1.0 1070
SMAJ4732 4.7 53 8 10 1 193 500 1.0 970
SMAJ4733 5.1 49 7 10 1 178 550 1.0 890
SMAJ4734 5.6 45 5 10 2 162 600 1.0 810
SMAJ4735 6.2 41 2 10 3 146 700 1.0 730
SMAJ4736 6.8 37 3.5 10 4 133 700 1.0 660
SMAJ4737 7.5 34 4.0 10 5 121 700 0.5 605
SMAJ4738 8.2 31 4.5 10 6 110 700 0.5 550
SMAJ4739 9.1 28 5.0 10 7 100 700 0.5 500
SMAJ4740 10 25 7 10 7.6 91 700 0.25 454
SMAJ4741 11 23 8 5 8.4 83 700 0.25 414
SMAJ4742 12 21 9 5 9.1 76 700 0.25 380
SMAJ4743 13 19 10 5 9.9 69 700 0.25 344
SMAJ4744 15 17 14 5 11.4 61 700 0.25 304
SMAJ4745 16 15.5 16 5 12.2 57 700 0.25 285
SMAJ4746 18 14 20 5 13.7 50 750 0.25 250
SMAJ4747 20 12.5 22 5 15.2 45 750 0.25 225
SMAJ4748 22 11.5 23 5 16.7 41 750 0.25 205
SMAJ4749 24 10.5 25 5 18.2 38 750 0.25 190
SMAJ4750 27 9.5 35 5 20.6 34 750 0.25 170
SMAJ4751 30 8.5 40 5 22.8 30 1000 0.25 150
SMAJ4752 33 7.5 45 5 25.1 27 1000 0.25 135
SMAJ4753 36 7.0 50 5 27.4 25 1000 0.25 125
SMAJ4754 39 6.5 60 5 29.7 23 1000 0.25 115
SMAJ4755 43 6.0 70 5 32.7 22 1500 0.25 110
SMAJ4756 47 5.5 80 5 35.8 19 1500 0.25 95
SMAJ4757 51 5.0 95 5 38.8 18 1500 0.25 90
SMAJ4758 56 4.5 110 5 42.6 16 2000 0.25 80
SMAJ4759 62 4.0 125 5 47.1 14 2000 0.25 70
SMAJ4760 68 3.7 150 5 51.7 13 2000 0.25 65
SMAJ4761 75 3.3 175 5 56.0 12 2000 0.25 60
SMAJ4762 82 3.0 200 5 62.2 11 3000 0.25 55
SMAJ4763 91 2.8 250 5 69.2 10 3000 0.25 50
SMAJ4764 100 2.5 350 5 76.0 9 3000 0.25 45
NOTE 1
The JEDEC type numbers shown have A 5% tolerance on nominal zener voltage.
No suffix signifies A 10% tolerance, C signifies 2%, and D signifies 1% 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 insure
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 1/2 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.
M C C
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Revision: 3 2003/04/30
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