MCC
Features
l
omponents
21201 Itasca Street Chatsworth
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SMAJ4728
THRU
SMAJ4764
Silicon
1 Watt
Zener Diodes
DO-214AC
(SMAJ) (High Profile)
H
Cathode Band
For surface mount application (flat handing surface for
Accurate placement)
3.3 thru 100 Volt Voltage Range
High Surge Current Rating
Higher Voltages Available
Available on Tape and Reel
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Mechanical Data
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CASE: JEDEC DO-214AC molded plastic body over
passivated chip
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Terminals solderable per MIL-STD-750, Method 2026
Polarity is indicated by cathode band.
Maximum temperature for soldering: 260 C for 10 seconds.
For surface mount applications with flame retardent epoxy
Meeting UL94V-0
o
J
Maximum Ratings @ 25
o
C Unless Otherwise Specified
Peak Surge
I
S
See Table 1
Current
Maximum
V
F
1.2V
(Note: 1)
Forward
Voltage
Steady State
P
(AV)
1.0W
(Note: 2,3)
Power
Dissipation
Operation And
Storage
Temperature
*
NOTES:
1.
2.
3.
Forward Current @ 200mA.
Mounted on 4.0mm copper pads to each terminal.
Lead temperature at 100 C or less. Derate linearly
above 100 C to zero power at 150 C.
o
o
o
2
A
C
E
F
G
D
B
DIMENSIONS
INCHES
MIN
.078
.067
.002
---
.035
.065
.205
.160
.100
MM
MIN
1.98
1.70
.05
---
.89
1.65
5.21
4.06
2.57
T
J
, T
STG
-55
o
C to
+150
o
C
DIM
A
B
C
D
E
F
G
H
J
MAX
.116
.089
.008
.02
.055
.096
.224
.180
.112
MAX
2.95
2.25
.20
.51
1.40
2.45
5.69
4.57
2.84
NOTE
SUGGESTED SOLDER
PAD LAYOUT
0.090”
0.085”
0.070”
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MCC
SMAJ4728 thru SMAJ4764
Electrical Characteristics @ 25
o
C Unless Otherwise Specified
MAXIMUM
REGULATOR MAXIMUM
MAXIMUM MAXIMUM
CURRENT
TEST
DYNAMIC REVERSE
TEST
KNEE
ZENER
Izm
IMPEDANCE
VOLTAGE CURRENT IMPEDANCE CURRENT VOLTAGE
o
Ta=50 C
Vr
Ir @ Vr
Zzt @ Izt
Izt
Zzk @ Izk
Vz
TEST
CURRENT
Izk
MAXIMUM
SURGE
CURRENT
Is
MCC PART
NUMBER
VOLTS
mA
OHMS
uA
VOLTS
mA
OHMS
MA
mA
SMAJ4728
SMAJ4729
SMAJ4730
SMAJ4731
SMAJ4732
SMAJ4733
SMAJ4734
SMAJ4735
SMAJ4736
SMAJ4737
SMAJ4738
SMAJ4739
SMAJ4740
SMAJ4741
SMAJ4742
SMAJ4743
SMAJ4744
SMAJ4745
SMAJ4746
SMAJ4747
SMAJ4748
SMAJ4749
SMAJ4750
SMAJ4751
SMAJ4752
SMAJ4753
SMAJ4754
SMAJ4755
SMAJ4756
SMAJ4757
SMAJ4758
SMAJ4759
SMAJ4760
SMAJ4761
SMAJ4762
SMAJ4763
SMAJ4764
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
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
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
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
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
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
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
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
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
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.
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SMAJ4728 thru SMAJ4764
MCC
Ratings and
Characteristic Curves
(T
A
= 25°C unless otherwise noted)
SMAJ4728... SMAJ4764
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