SML4728 thru SML4763A
Surface Mount Zener Diode
Zener Voltage
– 3.3 to 91.0 Volts
Steady State Power
– 1.0 Watt
DO-214AC
ded ge
ten Ran
Ex e
tag
Vol
0.094 MAX.
(2.38 MAX.)
0.065 (1.65)
0.049 (1.25)
0.110 (2.79)
0.100 (2.54)
0.177 (4.50)
0.157 (3.99)
0.012 (0.305)
0.006 (0.152)
Mounting Pad Layout
0.060 MIN.
(1.52 MIN.)
0.090 (2.29)
0.078 (1.98)
0.060 (1.52)
0.030 (0.76)
0.008 (0.203) MAX.
0.208 (5.28)
0.194 (4.93)
0.052 MIN.
(1.32 MIN.)
0.220
(5.58) REF
Dimensions in inches and (millimeters)
Features
• Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
• For surface mounted applications
• Low Zener impedance
• Low regulation factor
• High temperature soldering guaranteed:
250°C/10 seconds at terminals
Mechanical Data
Case:
JEDEC DO-214AC molded plastic over
passivated junction
Terminals:
Solder plated, solderable per MIL-STD-
750, Method 2026
Polarity:
Color band denotes positive end (cathode)
Mounting Position:
Any
Weight:
0.002 ounce, 0.064 gram
Maximum Ratings and Thermal Characteristics
(T
Parameter
Power dissipation at T
L
= 75°C
Maximum Junction Temperature
Storage Temperature Range
Symbol
P
tot
T
J
T
S
C
= 25°C unless otherwise noted)
Value
1.0
150
–65 to +150
Unit
Watt
°C
°C
3/25/99
SML4728 thru SML4763A
Surface Mount Zener Diode
Electrical Characteristics
(T
Device
Marking
Code
3P3
3P6
3P9
4P3
4P7
5P1
5P6
6P2
6P8
7P5
8P2
9P1
10
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
Nominal
Zener
Voltage
at IZT
VZ
(NOTE 1)
A
= 25°C unless otherwise noted) V
F
= 1.2V Max@I
F
= 200 mA for all types.
Maximum Dynamic
Impedance
Test
Current
I
ZT
(mA)
76.0
69.0
64.0
58.0
53.0
49.0
45.0
41.0
37.0
34.0
31.0
28.0
25.0
23.0
21.0
19.0
17.0
15.5
14.0
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
2.0
Z
ZT
at
I
ZT
(Ohms)
10.0
10.0
9.0
9.0
8.0
7.0
5.0
2.0
3.5
4.0
4.5
5.0
7.0
8.0
9.0
10.0
14.0
16.0
20.0
22.0
23.0
25.0
35.0
40.0
45.0
50.0
60.0
70.0
80.0
95.0
110
125
150
175
200
250
Z
ZK
at I
ZK
(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
(NOTE 1)
I
ZK
Maximum DC Reverse
Leakage Current
I
R
(µA)
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
V
R
(Volts)
1.0
1.0
1.0
1.0
1.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
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
Maximum
Surge
Current
(NOTE 2)
I
RM
Type
(Volts)
SML4728
SML4729
SML4730
SML4731
SML4732
SML4733
SML4734
SML4735
SML4736
SML4737
SML4738
SML4739
SML4740
SML4741
SML4742
SML4743
SML4744
SML4745
SML4746
SML4747
SML4748
SML4749
SML4750
SML4751
SML4752
SML4753
SML4754
SML4755
SML4756
SML4757
SML4758
SML4759
SML4760
SML4761
SML4762
SML4763
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
(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
(mApk)
1380
1260
1190
1070
970
890
810
730
660
605
550
500
454
414
380
344
305
285
250
225
205
190
170
150
135
125
115
110
95
90
80
70
65
60
55
50
NOTES:
(1) Standard voltage tolerance is 10%, Suffix A
±
5%
(2) Surge current is a non-repetitive, 8.3ms pulse width square wave or
equivalent sine-wave superimposed on I
ZT
per JEDEC Method
(3) Maximum steady state power dissipation is 1.0 watt at T
T
=75°C
SML4728 thru SML4763A
Surface Mount Zener Diode
Ratings and Characteristic Curves
FIG. 1 - MAXIMUM CONTINUOUS
POWER DISSIPATION
FIG. 2 - TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS FOR SML4763
1.0
P
M(AV)
, AVERAGE POWER
DISSIPATION, WATTS
60 H
Z
RESISTIVE OR
INDUCTIVE LOAD
10
0.75
INSTANTANEOUS FORWARD CURRENT,
AMPERES
0.5
1
PULSE WIDTH=300µs
1% DUTY CYCLE
0.25
P.C B. MOUNTED ON
0.31 x 0.31 x 0.08” (8 x 8 x 2mm)
COPPER AREAS PADS
0
25
50
75
100
125
150
175
T
J
=25°C
TERMINALS TEMPERATURE, °C
0.1
FIG. 3 - TYPICAL ZENER IMPEDANCE
1,000
Zz, DYNAMIC ZENER IMPEDANCE,
OHMS
T
J
=25°C
0.01
0.4
0.6
0.8
1.0
1.2
1.4
1.6
100
INSTANTANEOUS FORWARD VOLTAGE, VOLTS
V
Z
=91V
V
Z
=56V
10
V
Z
=30V
1
0.5
V
Z
=6.2V
10
100
500
I
ZT
, ZENER TEST CURRENT, mA
FIG. 5 - TYPICAL REVERSE CHARACTERISTICS
10
FIG. 4 - TYPICAL TEMPERATURE COEFFICIENTS
INSTANTANEOUS REVERSE CURRENT,
MICROAMPERES
ΘV
Z
, TEMPERATURE COEFFICIENT,
mV/°C
110
90
TESTED at RATED I
ZT
1
T
J
=100°C
70
50
30
10
0
0.1
T
J
=25°C
0
10
20
30
40
50
60
70
80
90 100
0.01
0
20
40
60
80
100
V
Z,
ZENER VOLTAGE, VOLTS
PERCENT OF RATED ZENER VOLTAGE, %
模拟与混合信号
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