1SMB2EZ11 THRU 1SMB2EZ200
SURFACE MOUNT SILICON ZENER DIODE
VOLTAGE - 11 TO 200 Volts
Power - 2.0 Watts
FEATURES
l
Low profile package
l
Built-in strain relief
l
l
l
l
l
l
Glass passivated junction
Low inductance
Excellent clamping capability
Typical I
D
less than 1
£g
A above 11V
High temperature soldering :
260
¢J
/10 seconds at terminals
Plastic package has Underwriters Laboratory
Flammability Classification 94V-O
DO-214AA
MECHANICAL DATA
Case: JEDEC DO-214AA, Molded plastic over
passivated junction
Terminals: Solder plated, solderable per
MIL-STD-750, method 2026
Polarity: Color band denotes positive end (cathode)
except Brdirectional
Standard Packaging: 12mm tape (EIA-481)
Weight: 0.003 ounce, 0.093 gram
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
¢J
ambient temperature unless otherwise specified.
SYMBOL
Peak Pulse Power Dissipation (Note A)
P
D
Derate above 75
¢J
Peak forward Surge Current 8.3ms single half sine-wave superimposed on rated
I
FSM
load(JEDEC Method) (Note B)
Operating Junction and Storage Temperature Range
T
J
,T
STG
NOTES:
A. Mounted on 5.0mm (.013mm thick) land areas.
B. Measured on 8.3ms, single half sine-wave or equivalent square wave, duty cycle = 4 pulses
per minute maximum.
2
VALUE
2
24
15
-55 to +150
UNITS
Watts
mW/
¢J
Amps
¢J
1SMB2EZ11 THRU 1SMB2EZ200
ELECTRICAL CHARACTERISTICS (T
A
=25
¢J
unless otherwise noted) V
F
=1.2 V max , I
F
=500 mA for all types
Type No.
(Note 1.)
1SMB2EZ11
1SMB2EZ12
1SMB2EZ13
1SMB2EZ14
1SMB2EZ15
1SMB2EZ16
1SMB2EZ17
1SMB2EZ18
1SMB2EZ19
1SMB2EZ20
1SMB2EZ22
1SMB2EZ24
1SMB2EZ27
1SMB2EZ30
1SMB2EZ33
1SMB2EZ36
1SMB2EZ39
1SMB2EZ43
1SMB2EZ47
1SMB2EZ51
1SMB2EZ56
1SMB2EZ62
1SMB2EZ68
1SMB2EZ75
1SMB2EZ82
1SMB2EZ91
1SMB2EZ100
1SMB2EZ110
1SMB2EZ120
1SMB2EZ130
1SMB2EZ140
1SMB2EZ150
1SMB2EZ160
1SMB2EZ170
1SMB2EZ180
1SMB2EZ190
1SMB2EZ200
Nominal
Zener
Voltage Vz
@ I
ZT
volts
(Note 2.)
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
22.0
24.0
27.0
30.0
33.0
36.0
39.0
43.0
47.0
51.0
56.0
62.0
68.0
75.0
82.0
91.0
100.0
110.0
120.0
130.0
140.0
150.0
160.0
170.0
180.0
190.0
200.0
Test
Maximum Zener Surge Current
Maximum Zener Impedance (Note 3.) Leakage Current
current I
ZT
Current
@ T
A
= 25
¢J
mA
I
ZM
ir - mA
Z
ZT
@ I
ZT
Z
Zk
@ I
ZK
I
ZK
I
R
V
R
mA
(Note 4.)
£g
A Max @ Volts
Ohms
Ohms
mA
45.5
41.5
38.5
35.7
33.4
31.2
29.4
27.8
26.3
25.0
22.8
20.8
18.5
16.6
15.1
13.9
12.8
11.6
10.6
9.8
9.0
8.1
7.4
6.7
6.1
5.5
5.0
4.5
4.2
3.8
3.6
3.3
3.1
2.9
2.8
2.6
2.5
4.0
4.5
5.0
5.5
7.0
8.0
9.0
10.0
11.0
11.0
12.0
13.0
18.0
20.0
23.0
25.0
30.0
35.0
40.0
48.0
55.0
60.0
75.0
90.0
100.0
125.0
175.0
250.0
325.0
400.0
500.0
575.0
650.0
675.0
725.0
825.0
900.0
700
700
700
700
700
700
750
750
750
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
2000
2000
2000
2000
3000
3000
3000
4000
4500
5000
5500
6000
6500
7000
7000
8000
8000
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
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
1.0
1.0
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
0.5
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
10.6
11.4
12.2
13.0
13.7
14.4
15.2
16.7
18.2
20.6
22.5
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
83.6
91.2
98.8
106.4
114.0
121.6
130.4
136.8
144.8
152.0
166
152
138
130
122
114
107
100
95
90
82
76
68
60
55
50
47
43
39
36
32
29
27
24
22
20
18
17
15
14
13
12
11
11
10
10
9
1.82
1.66
1.54
1.43
1.33
1.25
1.18
1.11
1.05
1.00
0.91
0.83
0.74
0.67
0.61
0.56
0.51
0.45
0.42
0.39
0.36
0.32
0.29
0.27
0.24
0.22
0.20
0.18
0.16
0.15
0.14
0.13
0.12
0.12
0.11
0.10
0.10
NOTES:
1. TOLERANCES - Suffix indicates 5% tolerance any other tolerance will be considered as a special device.
2. ZENER VOLTAGE (Vz) MEASUREMENT - guarantees the zener voltage when measured at 40 ms
¡Ó
10ms
from the diode body, and an ambient temperature of 25
¢J
(¡Ï 8
¢J
, -2
¢J
).
3.ZENER IMPEDANCE (Zz) DERIVATION - The zener impedance is derived from the 60 cycle ac voltage,
which results when an ac current having an rms falue equal to 10% of the dc zener current (I
ZT
or I
ZK
) is
superimposed on I
ZT
or I
ZK
.
4. SURGE CURRENT (Ir) NON-REPETITIVE - The rating listed in the electrical characteristics table is
maximum peak, non-repetitive, reverse surge current of 1/2 square wave or equivalent sine wave pulse
of 1/120 second duration superimposed on the test current, I
ZT
, per JEDEC standards, however, actual
device capability is as described in Figure 3.
RATING AND CHARACTERISTICS CURVES
1SMB2EZ11 THRU 1SMB2EZ200
£c
JL (t,D) TRANSIENT THERMAL
RESISTANCE
JUNCTION-TO-LEAD(¢J/W)
30
20
10
7
5
3
2
1
0.7
0.5
0.05
0.02
NOTE BELOW 0.1 SECOND,
THERMAL RESPONSE
CURVE IS APPLICABLE TO
ANY LEAD LENGTH (L)
0.002
0.005
0.01
0.02
0.05
D = 0.5
0.2
0.1
0.01
0.0002
0.3
0.0001
D=0
0.0005
0.001
SINGLE PULSE
£G
TJL =
£K
JL(t)PPK
REPETITIVE PULSES
£G
TJL =
£K
JL(t,D)PPK
0.1
0.2
0.5
1
2
5
10
Fig. 2-TYPICAL THERMAL RESPONSE L,
PPK, PEAK SURGE POWER(WATTS)
500
250
150
100
50
30
20
10
RECTANGULAR NONREPETITIVE
WAVEFORM TJ = 25
¢J
PRIOR TO
INITIAL PULSE
IR, REVERSE LEADAGE(uAdc)
@VR AS SPECIFIED IN ELEC.
CHAR. TABLE
100
0.1
0.05
0.03
0.02
0.01
0.005
0.003
0.002
0.001
0.0005
0.0003
0.0002
0.0001
1
2
5
10
20
50
100
200
500
1K
.1
.
.2 .3
5
1
2 3 5
30
10
20
50
P.W. PULSE WIDTH (ms)
NOMINAL VZ (VOLTS)
Fig. 3-MAXIMUM SURGE POWER
£c
VZ, TEMPERATURE
COEFFICIENT(mV/¢J ) @ IZT
8
6
4
2
0
-2
-4
3
4
6
8
10
12
RANGE
Fig. 4-TYPICAL REVERSE LEAKAGE
200
£c
VZ, TEMPERATURE
COEFFICIENT(mV/
¢J
) @ IZT
100
RANGE
50
40
30
20
10
0
20
40
60
80
100
120
140
160
180
200
VZ, ZENER VOLTAGE @IZT (VOLTS)
VZ, ZENER VOLTAGE @IZT (VOLTS)
Fig. 5-UNITS TO 12 VOLTS
Fig. 6-UNITS 10 TO 200 VOLTS
RATING AND CHARACTERISTICS CURVES
1SMB2EZ11 THRU 1SMB2EZ200
100
100
IZ, ZENER CURRENT (mA)
50
30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
0
1
2 3
4
5
6 7
8
9 10
IZ, ZENER CURRENT (mA)
50
30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
0
10
20 30 40
50 60
70 80 90
100
VZ, ZENER VOLTAGE (VOLTS)
VZ, ZENER VOLTAGE (VOLTS)
Fig. 7-VZ = 3.9 THRU 10 VOLTS
Fig. 8-VZ = 12 THRU 82 VOLTS
100
IZ, ZENER CURRENT (mA)
50
30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
100
120
140
160
180
200
£c
JL, JUNCTION-LEAD THERMAL
RESISTANCE (
¢J
/W)
80
70
60
50
40
30
20
10
0
0
PRIMARY PATH OF
CONDUCTION IS THROUGH
THE CATHODE LEAD
1/8
1/4
3/8
1/2
5/8
3/4
7/8
1
VZ, ZENER VOLTAGE (VOLTS)
L, LEAD LENGTH TO HEAT SINK (INCH)
Fig. 9-VZ = 100 THRU 200 VOLTS
Fig. 10-TYPICAL THERMAL RESISTANCE
APPLICATION NOTE:
Since the actual voltage available from a given zener
diode is temperature dependent, it is necessary to
determine junction temperature under any set of
operating conditions in order to calculate its value. The
following procedure is recommended:
Lead Temperature, T
L
, should be determined from:
TL =
£c
LA
P
D
+ T
A
£c
LA
is the lead-to-ambient thermal resistance (¢J /W)
and P
D
is the power dissipation. The value for
£c
LA
will
vary and depends on the device mounting method.
£c
LA
is generally 30-40
¢J
/W for the various chips and
tie points in common use and for printed circuit board
wiring.
The temperature of the lead can also be measured using
a thermocouple placed on the lead as close as possible to
the tie point. The thermal mass connected to the tie point
is normally large enough so that it will not significantly
respond to heat surges generated in the diode as a result
of pulsed operation once steady-state conditions are
achieved. Using the measured value of T
L
, the junction
temperature may be determined by:
T
J
= T
L
+
£G
T
JL
£GT
JL
is the increase in junction temperature above the
lead temperature and may be found from Figure 2 for a
train of power pulses or from Figure 10 for dc power.
£GT
JL
=
£c
LA
P
D
For worst-case design, using expected limits of Iz, limits
of P
D
and the extremes of T
J
(£GT
JL
) may be estimated.
Changes in voltage, Vz, can then be found from:
£GV
=
£c
VZ
£GT
J
£c
VZ
, the zener voltage temperature coefficient, is
found from Figures 5 and 6.
Under high power-pulse operation, the zener voltage
will vary with time and may also be affected significantly
be the zener resistance. For best regulation, keep current
excursions as low as possible.
Data of Figure 2 should not be used to compute surge
capability. Surge limitations are given in Figure 3. They
are lower than would be expected by considering only
junction temperature, as current crowding effects cause
temperatures to be extremely high in small spots resulting
in device degradation should the limits of Figure 3 be
exceeded.
stm32/stm8
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