Data Sheet
1.5 WATTS
Surface Mount Zener Diode
Mechanical Dimensions
.055(1.40)
.062(1.60)
.098(2.50)
.114(2.90)
1SMA5921B~5945B
Description
.157(4.00)
.181(4.60)
.006(.152)
.012(.305)
.078(2.00)
.096(2.44)
.002(.051)
.008(.203)
.188(4.80)
.208(5.28)
.030(0.76)
.060(1.52)
SMA/DO-214AC
Dimensions in inches and (millimeters)
Features
¬
For surface mounted applications
¬
1.5 W power dissipation
¬
Ideally suited for automated assembly
processes
Mechanical Data
¬
Case: Molded plastic SMA/DO-214AC
¬
Epoxy: UL 94V-0 rate flame retardant
¬
Terminals: Solderable per MIL-STD-750
method 2026
¬
Polarity: cathode band
¬
Mounting position: Any
¬
Weight: 0.064 gram
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Rating at 25
C
ambient temperature unless otherwise specified.
SYMBOL
Power Dissipation
(Note 1)
Half sine-wave superimposed on rated load
(Note 2)
(JEDEC method)
P
D
VALUE
1.5
UNIT
W
o
I
FSM
10
A
Operating junction and Storage Temperature
Range
NOTES :
2
T
J
, T
STG
-55 to +150
o
C
(1) Mounted on 5.0mm (.013mm thick) land areas.
(2) Measurd on 8.3ms, single half-sine wave or equivalent square wave, duty cycle = 4 pulses per minute maximum.
Data Sheet
1.5 WATTS
Surface Mount Zener Diode
o
1SMA5921B
THRU SMA5945B
Part No.
1SMA5921B
1SMA5922B
1SMA5923B
1SMA5924B
1SMA5925B
1SMA5926B
1SMA5927B
1SMA5928B
1SMA5929B
1SMA5930B
1SMA5931B
1SMA5932B
1SMA5933B
1SMA5934B
1SMA5935B
1SMA5936B
1SMA5937B
1SMA5938B
1SMA5939B
1SMA5940B
1SMA5941B
1SMA5942B
1SMA5943B
1SMA5944B
1SMA5945B
Vz
(V)
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
Electrical Characteristic (Ta=25 C)
IR(uA) Max.
Iz
T
Z
ZT
Z
ZK
I
ZK
( mA ) (Ohm) (Ohm) ( mA )
V
R
(V)
55.1
50.0
45.7
41.2
37.5
34.1
31.2
28.8
25.0
23.4
20.8
18.7
17.0
15.6
13.9
12.5
11.4
10.4
9.6
8.7
8.0
7.3
6.7
6.0
5.5
2.5
3.0
3.5
4.0
4.5
5.5
6.5
7.0
9.0
10
12
14
17.5
19
23
26
33
38
45
53
67
70
86
100
120
200
400
400
500
500
550
550
550
600
600
650
650
650
700
700
750
800
850
900
950
1000
1100
1300
1500
1700
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
2.5
2.5
2.5
2.5
2.5
2.5
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
5.2
6.0
6.5
7.0
8.0
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
Surge
Current
( mA )
221
200
183
165
150
136
125
115
100
94
83
75
68
63
56
50
45
42
38
35
32
29
27
24
22
Suffix B for 5%, Suffix "A" for 10%
FIG 1. STEADY STATE POWERDERATING
P
D
, MAXIMUM POWER DISSIPATION (WATTS)
FIG 2. ZENER VOLTAGE-TO 12 VOLTS
V
Z
, TEMPERATURE COEFFICIENT (mV/°C)
5
4
1.5
1.0
0.5
0
8
6
4
2
0
-2
-4
3
VZ@IZT
0
25
50
75
100
125
150
175
4
5
6
7
8
9
10
11
12
T
L
,LEADTEMPERATURE(°C)
V
Z
,ZENERVOLTAGE(VOLTS)
Data Sheet
1.5 WATTS
Surface Mount Zener Diode
FIG 4. EFFECT OF ZENER CURRENT
FIG 3. ZENER VOLTAGE-10 TO 12 VOLTS
V
Z
, TEMPERATURE COEFFICIENT (mV/°C)
120
100
80
60
40
20
0
VZ@IZT
1000
ZZ, DYNAMIC IMPEDANCE (OHMS)
TJ - 25°C
IZ(ms) = 0.1 IZ(dc)
VZ = 150V
100
91V
62V
10
22V
12V
0
20
40
60
80
100 120 140 160 180 200
1
0.5
1
1.0
100
6.8V
100
V
Z
, ZENERVOLTAGE(VOLTS)
1K
Iz(dc) =1mA
I
Z
, ZENER TEST CURRENT (mA)
PPK, PEAK SURGE POWER (watts)
RECTANGULAR NONREPETITIVE
WAVEFORM TJ = 25oC PRIOR TO
INITIAL PULSE
ZZ, DYNAMIC IMPEDANCE (ohms)
200
100
70
50
30
20
500
300
200
100
50
30
20
10
0.1 0.2 0.3
5
10mA
10
7
5
3
2
20mA
7
10
20
30
Iz(ms) = 0.1Iz(dc)
50
70
100
5
1
2 3 5
0
20
50
100
VZ, ZENER VOLTAGE (VOLTS)
P
W
, PULSE WIDTH (ms)
Fig 5. VZ = 6.8 THRU10VOLTS
Fig 6.VZ=12 THRU 82 VOLTS
100
100
50
30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
0
1
2
3
4
5
IZ, ZENER CURRENT (mA)
10
5
3
2
1
0.5
0.3
0.2
0.1
6
7
8
9
10
IZ, ZENER CURRENT (mA)
50
30
20
0
10 20 30 40
50 60 70
80 90 100
VZ, ZENER VOLTAGE (VOLTS)
VZ, ZENER VOLTAGE (VOLTS)
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