SML4728 thru SML4764A
Surface Mount Zener Diodes
DO-214AC (SMA)
Cathode Band
0.065 (1.65)
0.049 (1.25)
0.110 (2.79)
0.100 (2.54)
ded ge
ten Ran
Ex e
ltag
Vo
0.066 MIN.
(1.68 MIN.)
Zener Voltage
3.3 to 100V
Power Dissipation
1.0W
Mounting Pad Layout
0.094 MAX.
(2.38 MAX.)
0.177 (4.50)
0.157 (3.99)
0.012 (0.305)
0.006 (0.152)
0.052 MIN.
(1.32 MIN.)
0.220
(5.58) REF
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)
Dimensions in inches and (millimeters)
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
Packaging Codes – Options (Antistatic):
SML4728 – SML4737A:
2P – 1.8K per 7” plastic Reel (12mm tape), 36K/carton
2Q – 7.5K per 13” plastic Reel (12mm tape), 75K/carton
SML4738 – SML4764A:
51 – 1K per Bulk box, 20K/carton
61 – 1.8K per 7” plastic Reel (12mm tape), 36K/carton
5A – 7.5K per 13” plastic Reel (12mm tape), 75K/carton
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
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
W
°C
°C
4/24/01
SML4728 thru SML4764A
Surface Mount Zener Diodes
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
100
A
= 25°C unless otherwise noted) V
F
= 1.2V Max@I
F
= 200 mA for all types.
Type
Nominal
Zener
Voltage
at I
ZT
V
Z
(1)
(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
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
2.8
2.5
Maximum DC Reverse
Leakage Current
I
ZK
(1)
(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
I
RM
(2)
(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
45
Z
ZT
at
I
ZT
(W)
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
350
Z
ZK
at I
ZK
(W)
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
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
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
76.0
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
SML4764
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 SML4764A
Surface Mount Zener Diodes
Ratings and
Characteristic Curves
P
M(AV)
, Average Power Dissipation (W)
(T
A
= 25°C unless otherwise noted)
Fig. 1 - Maximum Continuous Power
Dissipation
60 Hz
Resistive or
Inductive Load
0.75
Instantaneous Forward Current (A)
1.0
10
Fig. 2 - Typical Instantaneous Forward
Characteristics for SML4763
1
0.5
0.1
Pulse width = 300µs
1% Duty Cycle
T
J
= 25°C
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
75
50
150
125
100
Terminals Temperature (°C)
175
0.01
0.4
1.2
0.8
1.0
1.4
0.6
Instantaneous Forward Voltage (V)
1.6
T
J
= 25°C
V
Z
= 91V
V
Z
= 56V
V
Z
= 30V
100
Instantaneous Reverse Current (µA)
Z
Z
, Dynamic Zener Impedance (Ω)
1,000
Fig. 3 - Typical Zener Impedance
10
Fig. 4 - Typical Reverse Characteristics
1
T
J
= 100°C
10
0.1
V
Z
= 6.2V
T
J
= 25°C
1
0.5
10
100
I
ZT
, Zener Test Current (mA)
500
0.01
0
60
20
80
40
100
Percent of Rated Zener Voltage (%)
Fig. 5 - Typical Temperature Coefficients
ΘV
Z
, Temperature Coefficient (mV/°C)
110
90
70
Tested at rated I
ZT
50
30
10
0
0
10 20 30 40 50 60 70 80 90 100
V
Z
, Zener Voltage (V)
PCB设计
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