- 128 -
1SMA5926 THRU 1SMA5945
Surface Mount Silicon Zener Diode
Voltage Range
11 to 68 Volts
1.5 Watts Peak Power
Features
a
For surface mounted applications in order to optimize
board space
a
Low profile package
a
Built-in strain relief
a
Glass passivated junction
a
Low inductance
a
Typical I
R
less than 0.5
A above 11V
a
High temperature soldering guaranteed:
260
O
C / 10 seconds at terminals
a
Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
Mechanical Data
a
Case: Molded plastic over passivated junction
a
Terminals: Solder plated, solderable per
MIL-STD-750, Method 2026
a
Polarity: Color Band denotes positive end (cathode)
a
Standard packaging: 12mm tape (EIA-481)
a
Weight: 0.002 ounces, 0.064 gram
SMA/DO-214AC
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25
+
ambient temperature unless otherwise specified.
Type Number
Symbol Value Units
DC Power Dissipation at T
L
=75
O
C,
measure at Zero Lead Length (Note 1)
Derate above 75
O
C
P
D
1.5
20
Watts
mW/
O
C
Peak Forward Surge Current, 8.3 ms Single Half
Sine-wave Superimposed on Rated Load
(JEDEC method) (Note 1, 2)
I
FSM
10.0
Amps
Operating and Storage Temperature Range
T
J
, T
STG
-55 to + 150
O
C
Notes: 1. Mounted on 5.0mm
2
(0.013mm thick) land areas.
2. Measured on 8.3ms Single Half Sine-wave or Equivalent Square Wave,
Duty Cycle=4 Pulses Per Minute Maximum.
.062(1.58)
.056(1.43)
.012(.31)
.006(.15)
.008(.20)
.004(.10)
.056(1.41)
.035(0.90)
.187(4.75)
.167(4.25)
.210(5.33)
.195(4.95)
.111(2.83)
.102(2
.29)
.103(2.
30)
.078(1.
99)
- 129 -
ELECTRICAL CHARACTERISTICS
(TA=25
O
C unless otherwise noted) VF=1.5V max, IF=200mA for all types.
Nominal
Maximum
Device Zener Voltage
Test
DC Zener
Device
Marking
Vz @ Izt
Current
Current
(Note 1)
Code
Voltage
IZT
ZZT @ IZT
IZM
(Notes 2)
mA
Ohms
Ohms
mA
uA
Volts
mA (dc)
1SMA5926
926A
11
34.1
5.5
550
0.25
0.5
8.4
136
1SMA5927
927A
12
31.2
6.5
550
0.25
0.5
9.1
125
1SMA5928
928A
13
28.8
7.0
550
0.25
0.5
9.9
115
1SMA5929
929A
15
25.0
9.0
600
0.25
0.5
11.4
100
1SMA5930
930A
16
23.4
10.0
600
0.25
0.5
12.2
94
1SMA5931
931A
18
20.8
12
650
0.25
0.5
13.7
83
1SMA5932
932A
20
18.7
14
650
0.25
0.5
15.2
75
1SMA5933
933A
22
17.0
17.5
650
0.25
0.5
16.7
68
1SMA5934
934A
24
15.6
19
700
0.25
0.5
18.2
63
1SMA5935
935A
27
13.9
23
700
0.25
0.5
20.6
56
1SMA5936
936A
30
12.5
26
750
0.25
0.5
22.8
50
1SMA5937
937A
33
11.4
33
800
0.25
0.5
25.1
45
1SMA5938
938A
36
10.4
38
850
0.25
0.5
27.4
42
1SMA5939
939A
39
9.6
45
900
0.25
0.5
29.7
38
1SMA5940
940A
43
8.7
53
950
0.25
0.5
32.7
35
1SMA5941
941A
47
8.0
67
1000
0.25
0.5
35.8
32
1SMA5942
942A
51
7.3
70
1100
0.25
0.5
38.8
29
1SMA5943
943A
56
6.7
86
1300
0.25
0.5
42.6
27
1SMA5944
944A
62
6.0
100
1500
0.25
0.5
47.1
24
1SMA5945
945A
68
5.5
120.0
1700
0.25
0.5
51.7
22
Notes: 1: Tolerance and Voltage Regulation Designation - the type number listed indicates a tolerance of 5%.
2: VZ limits are to be guaranteed at thermal equilibrium.
ZZK @ IZK
IR @ VR
Zener Impedance
Leakage Current
RATINGS AND CHARACTERISTIC CURVES ( 1SMA5926 THRU 1SMA5945)
FIG.1- STEADY STATE POWER DERATING
FIG.2- VZ = 12 THRU 68 VOLTS
FIG.3- ZENER VOLTAGE - 14 TO 68 VOLTS
T, TEMPERATURE( C)
o
FIG.4- EFFECT OF ZENER VOLTAGE
V ZENER VOLTAGE (VOLTS)
Z
,
P
MAXIMUM
POWER
DISSIP
A
TION
(W
A
TTS)
D
,
I
ZENER
CURRENT
(mA)
Z
,
O
TEMPERA
TURE
COEFFICIENT
(mV/
C)
VZ
,
o
Z
,
DYNAMIC
IMPEDANCE
(OHMS)
Z
V ZENER VOLTAGE (VOLTS)
Z
,
0
0
25
50
75
100
125
150
0.8
1.6
2.4
3.2
4
T
A
T
L
0
0.1
10
20
30
40
50
60
70
80
1
10
100
V ZENER VOLTAGE (VOLTS)
Z
,
V @ I
Z
Z1
10
10
100
100
I
= 1 mA
Z(dc)
10 mA
20 mA
I
= 0.1 I
Z(ms)
Z(dc)
10
100
10
100
- 130 -
RATINGS AND CHARACTERISTIC CURVES ( 1SMA5926 THRU 1SMA5945)
FIG.5- CAPACITANCE CURVE
FIG.6- TYPICAL PULSE RATING CURVE
FIG.7- PULSE WAVEFORM
FIG.8- PULSE WAVEFORM
C,
CAP
ACIT
ANCE
(pF)
P
,
PEAK
POWER
(kW)
PK
Ippm,
PEAK
PULSE
CURRENT
(%)
BREAKDOWN VOLTAGE (VOLTS)
Tp, PULSE WIDTH (ms)
t, TIME (ms)
t, TIME (ms)
MEASURED @
ZERO BIAS
MEASURED @
V /2
Z
T = 25 C
J
o
10
100
10
100
1000
0.01
0.01
0.1
1
10
0.1
1
10
NONREPETITIVE, EXPONENTIAL
PULSE WAVEFORM, T = 25 C
J
o
T = 25 C
PW (I ) IS DEFINED AS THE
POINT WHERE THE PEAK CURRENT
DECAYS TO 50% OF I
A
D
o
pp-
10 s
PEAK VALUE
I
ppm
HALF VALUE - I /2
pp
10/1000 s WAVEFORM
AS DEFINED BY R.E.A.
t
d
0
0
1
2
3
4
5
20
40
60
80
100
120
Ippm,
PEAK
PULSE
CURRENT
(%)
T = 8 s
0.5 I
PEAK
0.9 I
PEAK
0.1 I
PEAK
T
20 s
8/20 s WAVEFORM
AS DEFINED BY ANSI C62.1
AND IEC 801-5,
0
0
0.02
0.04
0.06
0.08
0.1
20
40
60
80
100
120
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