For surface mount applications (flat handling surface for
accurate placement)
3.3 thru 100 Volt Voltage Range
High Surge Current Rating
Higher Voltages Available
Electrically Equivalent to JEDEC Registered 1N4728A thru
1N4764A
Available on Tape and Reel.
SILICON
2 WATT
ZENER DIODES
DO-214AC
(SMAJ)
H
Mechanical Data
•
•
•
•
•
Package similar to JEDEC DO-214AC (see dimension ‘A’ note)
Terminals solderable per MIL-STD-750, Method 2026
Polarity is indicated by cathode band.
o
Maximum temperature for soldering: 260 C for 10 seconds.
For surface mount applications with flame retardent epoxy
meeting UL94V-0
J
A
C
E
F
G
D
B
Maximum Ratings @ 25°C Unless Otherwise Specified
°
Maximum Forward
Voltage
Peak Surge Current
Steady State Power
Dissipation
Operating And
Storage
Temperatures
Thermal Resistance
NOTES:
DIMENSIONS
INCHES
MIN
.078
.052
---
---
.030
.055
.194
.160
.100
MM
MIN
1.98
1.32
---
---
.76
1.65
4.93
3.99
2.57
V
F
I
s
P
(AV)
T
J
,T
STG
R
θJL
1.2V
See Table 1
2.0W
-55°C to
+150°C
25
o
C/W
(Note: 1)
(Note: 2,3)
DIM
A
B
C
D
E
F
G
H
J
MAX
.115
.058
.005
.02
.060
.075
.216
.180
.110
MAX
2.92
1.47
.127
.51
1.52
2.13
5.48
4.50
2.79
NOTE
1
NOTE 1: THIS MAXIMUM DIMENSION IS LARGER THAN THE STANDARD
JEDEC CALL OUT. STANDARD JEDEC IS .105 INCHES OR 2.66 MM.
PAD LAYOUT
0.095”
1. Forward Current @ 200mA.
2
2. Mounted on 4.0mm copper pads to each terminal.
3. Lead temperature at 100
°C
or less. Derate linearly above 100
°C
to zero
power at 150°C.
0.078
0.075
Data Sheet#MSC0284A.PDF
Date: 05/01/97
SMAJ4728A thru SMAJ4764A
Electrical Characteristics
@
25°C Unless Otherwise Specified
°
PART
NUMBER
ZENER
VOLTAGE
( V
Z
)
(NOTE 4)
TEST
CURRENT
( I
Z T
)
MAXIMUM
DYNAMIC
IMPEDANCE
(Z
Z T
@ I
Z T
)
(NOTE 2)
MAXIMUM
REVERSE
CURRENT
(I
R
@ V
R
)
TEST
VOLTAGE
(V
R
)
MAXIMUM
REGULATOR
CURRENT
( I
Z M
)
o
T
L
= 100 C
MAXIMUM
KNEE
IMPEDANCE
(Z
Z K
@ I
Z K
)
(NOTE 2)
TEST
CURRENT
( I
Z K
)
MAXIMUM
(SURGE)
CURRENT
(I
S
)
(NOTE 3)
SMAJ4728A
SMAJ4729A
SMAJ4730A
SMAJ4731A
SMAJ4732A
SMAJ4733A
SMAJ4734A
SMAJ4735A
SMAJ4736A
SMAJ4737A
SMAJ4738A
SMAJ4739A
SMAJ4740A
SMAJ4741A
SMAJ4742A
SMAJ4743A
SMAJ4744A
SMAJ4745A
SMAJ4746A
SMAJ4747A
SMAJ4748A
SMAJ4749A
SMAJ4750A
SMAJ4751A
SMAJ4752A
SMAJ4753A
SMAJ4754A
SMAJ4755A
SMAJ4756A
SMAJ4757A
SMAJ4758A
SMAJ4759A
SMAJ4760A
SMAJ4761A
SMAJ4762A
SMAJ4763A
SMAJ4764A
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
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
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
µ
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
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
MA
552
504
468
434
386
356
324
292
266
242
220
200
182
166
152
138
132
114
100
90
82
76
68
60
54
50
46
44
38
36
32
28
26
24
22
20
18
OHMS
400
400
400
400
500
550
600
700
700
700
700
700
700
700
700
700
700
700
750
750
720
750
750
1000
1000
1000
1000
1500
1500
1500
2000
2000
2000
2000
3000
3000
3000
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
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
NOTE:
1. The 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.
2. The Zener impedance is derived from the 60 Hz ac voltage, which results when an ac current having an
rms value equal to 10% of the dc Zener
current (I
ZT
or I
ZK
) is superimposed on I
ZT
. Zener impedance is measured at two points to insure a sharp knee on the breakdown curve and
eliminate unstable units.
o
3. The reverse surge current is measured at 25 C ambient using a ½
square wave or equivalent sine wave pulse 1/120 second duration superimposed
on I
ZT
.
4. Voltage at thermal equilibrium or 90 seconds after application of dc current.
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