1SMA5926
THRU
1SMA5945
Surface Mount Silicon Zener Diode
Voltage Range
11 to 68 Volts
1.5 Watts Peak Power
Features
a
a
a
a
a
a
a
a
SMA/DO-214AC
.062(1.58)
.056(1.43)
.111(2.83)
.102(2.29)
For surface mounted applications in order to optimize
board space
Low profile package
Built-in strain relief
Glass passivated junction
Low inductance
Typical I
R
less than 0.5 A above 11V
High temperature soldering guaranteed:
260
O
C / 10 seconds at terminals
Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
.187(4.75)
.167(4.25)
Mechanical Data
a
a
a
a
Case: Molded plastic over passivated junction
Terminals: Solder plated, solderable per
MIL-STD-750, Method 2026
Polarity: Color Band denotes positive end (cathode)
Standard packaging: 12mm tape (EIA-481)
.103(2.30)
.078(1.99)
.012(.31)
.006(.15)
.008(.20)
.004(.10)
.056(1.41)
.035(0.90)
.210(5.33)
.195(4.95)
a
Weight: 0.002 ounces, 0.064 gram
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25+ambient temperature unless otherwise specified.
Type Number
DC Power Dissipation at T
L
=75
O
C,
measure at Zero Lead Length (Note 1)
Derate above 75
O
C
Peak Forward Surge Current, 8.3 ms Single Half
Sine-wave Superimposed on Rated Load
(JEDEC method) (Note 1, 2)
Operating and Storage Temperature Range
Symbol
P
D
Value
1.5
20
Units
Watts
mW/
O
C
I
FSM
10.0
Amps
O
T
J
, T
STG
-55 to + 150
2
Notes: 1. Mounted on 5.0mm (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.
C
- 128 -
ELECTRICAL CHARACTERISTICS
(TA=25
O
C unless otherwise noted) VF=1.5V max, IF=200mA for all types.
Nominal
Device Zener Voltage Test
Zener Impedance
Marking
Vz @ Izt
Current
ZZK @ IZK
Code
Voltage
IZT
ZZT @ IZT
(Notes 2)
mA
Ohms
Ohms
mA
926A
927A
928A
929A
930A
931A
932A
933A
934A
935A
936A
937A
938A
939A
940A
941A
942A
943A
944A
945A
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
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
5.5
6.5
7.0
9.0
10.0
12
14
17.5
19
23
26
33
38
45
53
67
70
86
100
120.0
550
550
550
600
600
650
650
650
700
700
750
800
850
900
950
1000
1100
1300
1500
1700
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
Device
(Note 1)
1SMA5926
1SMA5927
1SMA5928
1SMA5929
1SMA5930
1SMA5931
1SMA5932
1SMA5933
1SMA5934
1SMA5935
1SMA5936
1SMA5937
1SMA5938
1SMA5939
1SMA5940
1SMA5941
1SMA5942
1SMA5943
1SMA5944
1SMA5945
Maximum
DC Zener
Leakage Current Current
IR @ VR
IZM
uA
Volts
mA (dc)
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
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
136
125
115
100
94
83
75
68
63
56
50
45
42
38
35
32
29
27
24
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.
- 129 -
RATINGS AND CHARACTERISTIC CURVES ( 1SMA5926 THRU 1SMA5945)
FIG.1- STEADY STATE POWER DERATING
4
P
D
,
MAXIMUM POWER DISSIPATION (WATTS)
FIG.2- VZ = 12 THRU 68 VOLTS
100
3.2
I
Z
,
ZENER CURRENT (mA)
2.4
10
T
L
1.6
1
0.8
T
A
0
0
25
50
75
o
100
125
150
0.1
0
10
20
V
Z
,
ZENER VOLTAGE (VOLTS)
T, TEMPERATURE( C)
30
40
50
60
70
80
FIG.3- ZENER VOLTAGE - 14 TO 68 VOLTS
100
O
VZ
,
TEMPERATURE COEFFICIENT (mV/
o
C)
FIG.4- EFFECT OF ZENER VOLTAGE
Z
Z
, DYNAMIC IMPEDANCE (OHMS)
V
Z
@ I
Z1
100
I
Z(dc)
= 1 mA
10
10 mA
I
Z(ms)
= 0.1 I
Z(dc)
100
V
Z
,
ZENER VOLTAGE (VOLTS)
20 mA
10
10
10
V
Z
,
ZENER VOLTAGE (VOLTS)
100
- 130 -
RATINGS AND CHARACTERISTIC CURVES ( 1SMA5926 THRU 1SMA5945)
FIG.5- CAPACITANCE CURVE
1000
FIG.6- TYPICAL PULSE RATING CURVE
10
P
PK
, PEAK POWER (kW)
C, CAPACITANCE (pF)
MEASURED @
ZERO BIAS
MEASURED @
V
Z
/2
NONREPETITIVE, EXPONENTIAL
o
PULSE WAVEFORM, T
J
= 25 C
1
100
0.1
T
J
= 25 C
10
10
BREAKDOWN VOLTAGE (VOLTS)
o
100
0.01
0.01
0.1
Tp, PULSE WIDTH (ms)
1
10
FIG.7- PULSE WAVEFORM
120
120
FIG.8- PULSE WAVEFORM
10 s
Ippm, PEAK PULSE CURRENT (%)
100
Ippm, PEAK PULSE
CURRENT (%)
80
PEAK VALUE
I
ppm
T
A
= 25
o
C
PW (I
D
) IS DEFINED AS THE
POINT WHERE THE PEAK CURRENT
DECAYS TO 50% OF I
pp-
100
0.9 I
PEAK
80
8/20 s WAVEFORM
AS DEFINED BY ANSI C62.1
AND IEC 801-5,
60
60
HALF VALUE - I
pp
/2
0.5 I
PEAK
40
40
10/1000 s WAVEFORM
AS DEFINED BY R.E.A.
t
d
0.1 I
PEAK
1
2
t, TIME (ms)
20
20
T=8 s
0
0
0.02
0.04
t, TIME (ms)
0
0
3
4
5
0.06
0.08
0.1
T
20 s
- 131 -
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