1SMA4741 THRU 1SMA4764
Surface Mount Silicon Zener Diode
Voltage Range
11 to 200 Volts
1.0 Watts Peak Power
F
eatures
a For surface mounted applications in order to optimiz
e
board space
a Low profile package
a Built-in strain relief
a Glass passivated junction
a Low inductance
a Typical IR less than 5.0A above 11V
a High temperature soldering guaranteed:
260
OC / 10 seconds at terminals
a Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
M
echanical Data
a Case: Molded plastic over passivated junction
a Terminals: Solder plated solderable per
MIL-STD-750, Method 2025
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)
M
aximum Ratings and Electrical Characteristics
Rating at 25ambient temperature unless otherwise specified.
Type Number Symbol Value Units
Peak Power Dissipation at TA=50OC,
Derate above 50 OC (Note 1) PD 1.0
6.67 Watts
mW/ OC
Peak Forward Surge Current, 8.3 ms Single Half
Sine-wave Superimposed on Rated Load
(JEDEC method) (Note 2)
IFSM
10.0
Amps
Operating and Storage Temperature Range TJ, TSTG -55 to + 150 OC
Notes: 1. Mounted on 5.0mm2 (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(2.58)
.103(2.61)
.078(1.99)
ELECTRICAL CHARACTERISTICS
(TA=25
O
C unless otherw ise noted) VF =1.2V m ax, IF=200m A for all types.
Nominal
Device Zener Voltage Test Surge C urrent @
Device M arking Vz @ Izt Current
TA = 25
O
C
(N ote 1) Code Voltage IZT ZZT @ IZT Ir - m A
(N otes 2 & 3) m A O hm s O hm s m A uA M ax V olts (N ote 5)
1SMA4741 741A 11 23 8 700 0.25 5.0 8.4 414
1SMA4742 742A 12 21 9 700 0.25 5.0 9.1 380
1SMA4743 743A 13 19 10 700 0.25 5.0 9.9 344
1SMA4744 744A 15 17 14 700 0.25 5.0 11.4 304
1SMA4745 745A 16 15.5 16 700 0.25 5.0 12.2 285
1SMA4746 746A 18 14.0 20 750 0.25 5.0 13.7 250
1SMA4747 747A 20 12.5 22 750 0.25 5.0 15.2 225
1SMA4748 748A 22 11.5 23 750 0.25 5.0 16.7 205
1SMA4749 749A 24 10.5 25 750 0.25 5.0 18.2 190
1SMA4750 750A 27 9.5 35 750 0.25 5.0 20.6 170
1SMA4751 751A 30 8.5 40 1000 0.25 5.0 22.8 150
1SMA4752 752A 33 7.5 45 1000 0.25 5.0 25.1 135
1SMA4753 753A 36 7.0 50 1000 0.25 5.0 27.4 125
1SMA4754 754A 39 6.5 60 1000 0.25 5.0 29.7 115
1SMA4755 755A 43 6.0 70 1500 0.25 5.0 32.7 110
1SMA4756 756A 47 5.5 80 1500 0.25 5.0 35.8 95
1SMA4757 757A 51 5.0 95 1500 0.25 5.0 38.8 90
1SMA4758 758A 56 4.5 110 2000 0.25 5.0 42.6 80
1SMA4759 759A 62 4.0 125 2000 0.25 5.0 47.1 70
1SMA4760 760A 68 3.7 150 2000 0.25 5.0 51.7 65
1SMA4761 761A 75 3.3 175 2000 0.25 5.0 56.0 60
1SMA4762 762A 82 3.0 200 3000 0.25 5.0 62.2 55
1SMA4763 763A 91 2.8 250 3000 0.25 5.0 69.2 50
1SMA4764 764A 100 2.5 350 3000 0.25 5.0 76.0 45
Notes:
5 . S u rg e C u r re n t (Ir) No n -R e p e titive . T h e ra tin g liste d in th e e le ctr ica l c h a ra c ter istic s ta b le is max imu m p e a k , n o n -re p e titive ,
reverse su rge current of 1/2 square w ave or equivalent sine w ave pulse of 1/120 second du ration sup erim posed on the
test current, IZT, per JEDE C registration; however, actual device capabili t y is as described in Figure 10.
3. Zener Voltage (V
Z
) Measurem en t. Gua rantees the zener voltage w hen m essu red at 90 second s wh ile m ain taining
the lead tem perature (T
L
) at 30
O
C± 1
O
C, from the diode body.
4. Zener Im pedance (ZZ) D erivatio n. The zener im pedance is derived from the 1000 cycle ac voltage, w hich results when an ac
current having and rms value equal to 10% o f the dc zener current (IZT or IZK) is superim posed on IZT or IZK.
1. Tolerance and Type Nu m ber Designation. The type num bers listed have a standard tolerance on the nom inal zener voltage of ±5%.
2 . Sp e cia ls Av aila b l e In c lud e:
A. Nom inal zener voltages betw een the voltages show n and tighter voltage tolerances.
B . Ma tc h e d s e t s.
M axim u m Zener Im pedan ce (N ote 4) Leakage C urrent
ZZK @ IZK IR @ VR
FIG.1- POWER TEMPERATURE DERATING CURVE
FIG.2- TYPICAL FORWARD CHARACTERISTICS
FIG.3- EFFECT OF ZENER CURRENT
ON ZENER IMPEDANCE
FIG.5- TYPICAL LEAKAGE CURRENT
FIG.4- EFFECT OF ZENER VOLTAGE
ON ZENER IMPEDANCE
P MAXIMUM POWER DISSIPATION (WATTS)D
,
IF, FORWARD CURRENT (mA)
AMBIENT TEMPERATURE( C)
o
V FORWARD VOLTAGE (VOLTS)
F
,
I,
Z
ZENER CURRENT (mA)
I,
Z
ZENER CURRENT (mA)
V,
Z
NOMINAL ZENER VOLTAGE (VOLTS)
Z , DYNAMIC IMPEDANCE (OHMS)
Z
IR, LEAKAGE CURRENT ( A)
Z , DYNAMIC IMPEDANCE (OHMS)
Z
0 20 40 60 80 100 120 140 160 180 200
MINIMUM
MAXIMUM
70 C
o
150 C
o
25 C
o
0C
o
0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
1.0
2.0
5.0
10
20
50
100
200
500
1000
T = 25 C
I (rms)= 0.1 I (dc)
f = 1KHz
J
ZZ
o
47V
27V
0.8V
0.1
0.25
0.50
0.75
1.0
1.25
0.2 0.5 1.0 2.0 5.0 10 20 50 100
1.0
2.0
5.0
10
20
50
100
200
500
1000
1.0
T = 25 C
I (rms)= 0.1 I (dc)
f = 1KHz
J
ZZ
o
I = 1.0mAZ
5.0mA
20mA
2.0 3.0 5.0 7.0 10 20 30 50 70 100
1.0
2.0
5.0
7.0
10
20
50
70
100
200
500
700
1000
TYPICAL LEAKAGE CURRENT
AT 80% OF NOMINAL
BREAKDOWN VOLTAGE
+125 C
o
+25 C
o
3.0 4.0 5.0 6.0 7.0 8.0 9.0 10 11 12 13 14 15
0.001
0.002
0.005
0.007
0.01
0.02
0.05
0.07
0.1
0.2
0.5
0.7
1.0
2.0
5.0
7.0
10
20
50
70
100
200
500
700
1000
2000
5000
7000
10000
RATINGS AND CHARACTERISTIC CURVES ( 1SMA4741 THRU )1SMA4764
FIG.6- TYPICAL CAPACITANCE versus Vz FIG.7- TEMPERATURE COEFFICIENTS
FIG.7- TEMPERATURE COEFFICIENTS FIG.8- EFFECT OF ZENER CURRENT
V , FORWARD VOLTAGE (VOLTS)
Z
V , ZENER VOLTAGE (VOLTS)
Z
V , ZENER VOLTAGE (VOLTS)
Z
V , ZENER VOLTAGE (VOLTS)
Z
C, CAPACITANCE (pF)
OV , TEMPERAYURE COEFFICIENT (mV/ C)
Z
o
OV , TEMPERAYURE COEFFICIENT (mV/ C)Z
o
OV , TEMPERAYURE COEFFICIENT (mV/ C)Z
o
0V BIAS
1.0V BIAS
50% OF BREAKDOWN BIAS
1.0 10 100
4
8
10
100
200
300
400
b-RANGE FOR UNITS 11 TO 100 VOLTS
V@IZZT
RANGE
10 20 30 50 70 100
1.0
2.0
3.0
5.0
7.0
10
20
30
50
70
100
a-RANGE FOR UNITS TO 12 VOLTS
V@IZZT
RANGE
2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10 11 12
-2.0
-4.0
0
+2.0
+4.0
+6.0
+8.0
+10
+12
V@I
T25C
ZZT
Ao
20mA
0.01mA
1.0mA
NOTE: BELOW 3 VOLTS AND ABOVE a VOLTS
CHANGES IN ZENER CURRENT OO NOT
AFFECT TEMPERATURE COEFFICIENTS
3.0 4.0 5.0 6.0 7.0 8.0
-4.0
-2.0
0
+2.0
+4.0
+6.0
RATINGS AND CHARACTERISTIC CURVES ( 1SMA4741 THRU 1SMA4764)
RATINGS AND CHARACTERISTIC CURVES ( 1SMA4741 THRU 1SMA4764)
FIG.9- MAXIMUM SURGE POWER
Ppk, PEAK SURGE POWER IWATTSO
PW, PULSE WIDTH (ms)
RECTANGULAR
WAVEFORM
TJ = 25 C PRIOR TO
INITIAL PULSE
o
11V-91V NON-REPETITIVE
0.8V-10V NON-REPETITIVE
5% DUTY CYCLE
10% DUTY CYCLE
20% DUTY CYCLE
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 1000
2.0
3.0
5.0
7.0
10
20
30
50
70
100
VZ
IZ
758A
760A
762A
764A
T =25JA
5mA
10mATEST CURRENT IZ
0
10
20
0 50 100 150 200V
mA
FIG.11- BREAKDOWN CHARACTERISTICS
T = CONSTANT (PULSED)J
IZ
30
60
mA
50V
50
40
20
10
0
0 5 10 15 20 25 30 35 40 45
741A 744A 746A
748A
750A
752A
754A
756A
10mA
VZ
T =25JA
25mATEST CURRENT IZ
FIG.10- BREAKDOWN CHARACTERISTICS
T = CONSTANT (PULSED)J
Rev. 1 03/2003
