SMA4738 [SECOS]
1.0 Watts Surface Mount Zener Diode; 1.0瓦表面贴装齐纳二极管
| 型号： | SMA4738 |
| 厂家： | 
SECOS HALBLEITERTECHNOLOGIE GMBH |
| 描述： | 1.0 Watts Surface Mount Zener Diode |
| 文件： | 总4页 (文件大小：314K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SMA4735 THRU SMA4764
VOLTAGE 6.2V ~ 100V
Elektronische Bauelemente
1.0 Watts Surface Mount Zener Diode
RoHS Compliant Product
A suffix of "-C" specifies halogen & lead-free
SM A
●FEATURES
. For surface mounted applications
. 1.0 W power dissipation
. Low reverse current
. Ideally suited for automated assembly processes
. Epitaxial construction
Dimensions in
Millimeters
Dimensions in
Inches
C
H
A
1.25
3.99
2.50
1.98
0.051
4.78
0.76
0.152
1.65
0.049
0.157
0.098
0.078
0.002
0.188
0.030
0.006
0.065
0.181
0.114
0.096
0.008
0.208
0.060
0.012
A
B
C
D
E
F
4.60
2.90
●MECHANICAL DATA
. Case: Molded plastic
B
F
2.44
0.203
5.28
. Epoxy: UL 94V-0 rate flame retardant
. Metallurgically bonded construction
. Polarity: Color band denotes cathode end
. Mounting position: Any
D
G
G
H
1.52
E
0.305
. Weight: 0.064 grams
●MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Rating 25℃ ambient temperature unless otherwise specified.
Electrical Characteristics
Symbol
PD
Value
1.0
Unit
Power Dissipation (Note 1)
W
A
Half sine-wave superimposed on rated load
JEDEC method (Note 2)
IFSM
10
-55 to +155
OC
Operating junction and Storage Temperature
TJ, TSTG
Note: (1) Mounted on 5.0mm2(.013mm thick) land areas.
(2) Measurd on 8.3ms, single half-sine wave or equivalent square wave, duty cycle = 4 pulses per minute maximum.
http://www.SeCoSGmbH.com/
Any changing of specification will not be informed individual
05-Nov-2007 Rev. C
Page 1 of 4
SMA4735 THRU SMA4764
VOLTAGE 6.2V ~ 100V
Elektronische Bauelemente
1.0 Watts Surface Mount Zener Diode
Electrical Characteristic (Ta=25oC)
Surge
Current
( mA )
730
Vz
IzT
ZZT
ZZK
IZK
IR(uA) Max.
Part No.
( V )
( mA ) (Ohm) (Ohm) ( mA )
VR(V)
3.0
SMA4735
SMA4736
SMA4737
SMA4738
SMA4739
6.2
6.8
7.5
8.2
9.1
41
37
34
31
28
2.0
3.5
4.0
4.5
5.0
700
700
700
700
700
1.0
1.0
0.5
0.5
0.5
50.0
10.0
10.0
10.0
10.0
4.0
660
5.0
605
6.0
550
7.0
500
SMA4740
SMA4741
SMA4742
SMA4743
SMA4744
SMA4745
SMA4746
SMA4747
SMA4748
SMA4749
SMA4750
SMA4751
SMA4752
SMA4753
SMA4754
SMA4755
SMA4756
SMA4757
SMA4758
SMA4759
SMA4760
SMA4761
SMA4762
SMA4763
SMA4764
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
25
23
7.0
8.0
9.0
10
700
700
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
10.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
7.6
454
414
380
344
304
285
250
225
205
190
170
150
135
125
115
110
95
8.4
21
700
9.1
19
700
9.9
17
14
700
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
15.5
14
16
700
20
750
12.5
11.5
10.5
9.5
8.5
7.5
7
22
750
23
750
25
750
35
750
40
1000
1000
1000
1000
1500
1500
1500
2000
2000
2000
2000
3000
3000
3000
45
50
6.5
6
60
70
5.5
5
80
95
90
4.5
4
110
125
150
175
200
250
350
80
70
3.7
3.3
3
65
60
55
2.8
2.5
50
45
Tolerance 5%
http://www.SeCoSGmbH.com/
Any changing of specification will not be informed individual
05-Nov-2007 Rev. C
Page 2 of 4
SMA4735 THRU SMA4764
VOLTAGE 6.2V ~ 100V
Elektronische Bauelemente
1.0 Watts Surface Mount Zener Diode
FIG 1. POWER TEMPERATURE DERATING CURVE
1.25
1.0
0.75
0.5
0.25
0
L = LEAD LENTGH TO
HEAT SINK
0
20 40 60 80 100 120 140 160 180 200
TL, LEAD TEMPERATIRE
FIG 2. TEMPERATURE COFFICIENTS
(-55oC TO +150oC TEMPERATURE RANGE; 90%OF THE UNITS ARE IN RANGES INDICATED.)
100
70
50
30
VZ@IZT
20
+12
+10
10
RANGE
7.0
5.0
+8.0
+6.0
+4.0
+2.0
0
3.0
2.0
VZ@IZT
1.0
-2.0
-4.0
RANGE
10
20
30
50
70
100
2
3
4
5
6
7
8
9
10 11 12
VZ, ZENER VOLTAGE (VOLTS)
V
Z, ZENER VOLTAGE (VOLTS)
FIG 3. TYPICAL THERMAL RESISTANCE
VERSUS LEAD LENGTH
FIG 4. EFFECT OF ZENER CURRENT
175
150
125
100
75
NOTE: BELOW 3 VOLTS AND ABOVE 8
+6
CHANGES IN ZENER CURRENT
DO AFFECT TRMPERATURE
+4
+2
0
20mA
50
0.01mA
25
-0.2
-0.4
1.0mA
5
Vz@IZT
TA
= 25oC
0
3
4
6
7
8
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
L, LEAD LENGTH TO HEAT SINK (INCKES)
VZ, ZENER VOLTAGE (VOLTS)
http://www.SeCoSGmbH.com/
05-Nov-2007 Rev. C
Any changing of specification will not be informed individual
Page 3 of 4
SMA4735 THRU SMA4764
VOLTAGE 6.2V ~ 100V
Elektronische Bauelemente
1.0 Watts Surface Mount Zener Diode
FIG 5. MAXIMUM SURGE POWER
100
70
50
11V-91V NON-REPETITIVE
0.8V-10V NON-REPETITIVE
5% DUTY CYCLE
30
20
RECTANGULAR WAVEFORM
TJ = 25oC PRIOR TO INITIAL
PULSE
10
10% DUTY CYCLE
20% DUTY CYCLE
7.0
5.0
3.0
2.0
1.0
0.01 0.02
0.05 0.1
0.2
0.5
1.0
2.0
5.0
10
20
50
100 200
500
PW, PULSE WIDTH
This graphr epresents 90 percentile date point
For worse-case design characteristics, multiply surge power by 2/3
FIG 6. EFFECT OF ZENER CURRENT ON
ZENER IMPEDANCE
FIG 7. EFFECT OF ZENER VOLTAGE ON
ZENER IMPEDANCE
1000
700
500
1000
TJ
= 25oC
Iz(ms)=0.1z(dc)
f = 60Hz
TJ
= 25oC
Iz = 1.0mA
5.0mA
500
200
Iz(ms)=0.1z(dc)
f = 60Hz
200
100
70
50
100
50
47V
20mA
20
10
7.0
27V
20
10
5.0
2.0
1.0
5.0
0.8V
2.0
1.0
1.0 2.0
3.0 5.0 7.0
10 20 30 50 70 100
0.1 0.2
0.5 1.0 2.0
5.0 10 20
50 100
Iz, ZENEER CURRENT (mA)
Iz, ZENEER CURRENT (mA)
http://www.SeCoSGmbH.com/
Any changing of specification will not be informed individual
05-Nov-2007 Rev. C
Page 4 of 4
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