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ZS4728A Thru ZS4753A
Surface Mount Zener Diodes
P b Lead(Pb)-Free
Features *1W Power Dissipation *For Surface Mounted Applications *Low zener Impedance *Low Regulation Factor *Zener Breakdown Voltage Range 3.3V to 36V Mechanical Data *Case : SMA-1 *Terminals : Solderable per MIL-STD-202,Method 208 *Polarity : Color Band Denotes Cathode *Marking : Marking Code(See Table on Page 2) *Mounting Position : Any *Weight : 0.05 grams SURFACE MOUNT ZENER DIODES 1.0 WATTS
SMA-1
SMA-1 Outline Dimension
B C A E J H H
unit:mm
SMA-1
Dim A B C E H J Min
2.40 4.40 0.30 3.80 1.00 1.50
Max
2.80 4.80 0.30 4.20 1.00 1.70
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Maximum Ratings (TA=25 C Unless Otherwise Noted) Symbol Characteristics
Power Dissipation TL=55 C Maximun junction Temperature Storage Temperature Range PD Tj TSTG
Value
1.0 150 -55 to +150
Unit
W C C
ELECTRICAL CHARACTERISTICS (T A =25 C Unless Otherwise Noted VF=1.2V MAX, IF = 200mA for all types)
Device
ZS4728A ZS4729A ZS4730A ZS4731A ZS4732A ZS4733A ZS4734A ZS4735A ZS4736A ZS4737A ZS4738A ZS4739A ZS4740A ZS4741A ZS4742A ZS4743A ZS4744A ZS4745A ZS4746A ZS4747A ZS4748A ZS4749A ZS4750A ZS4751A ZS4752A ZS4753A
Device Marking
Z3V3 Z3V6 Z3V9 Z4V3 Z4V7 Z5V1 Z5V6 Z6V2 Z6V8 Z7V5 Z8V2 Z9V1 Z10 Z11 Z12 Z13 Z15 Z16 Z18 Z20 Z22 Z24 Z27 Z30 Z33 Z36
Zener Voltage
VZ(Nom)@IZT Volts
3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.5 8.2 9.1 10 11 12 13 15 16 18 20 22 24 27 30 33 36
Zener Impedance
ZZT@IZT
10 10 9 9 8 7 5 2 3.5 4 4.5 5 7 8 9 10 14 16 20 22 23 25 35 40 45 50
Leakage Current Surge Current
IR@VR
I RM @TA =25C
ZZK@IZK
mA
76 69 64 58 53 49 45 41 37 34 31 28 25 23 21 19 17 15.5 14 12.5 11.5 10.5 9.5 8.5 7.5 7.0
400 400 400 400 500 550 600 700 700 700 700 700 700 700 700 700 700 700 750 750 750 750 750 1000 1000 1000
mA
1 1 1 1 1 1 1 1 1 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
A
100 100 50 10 10 10 10 10 10 10 10 10 10 5 5 5 5 5 5 5 5 5 5 5 5 5
Volts
1 1 1 1 1 1 2 3 4 5 6 7 7.6 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
mA
1380 1260 1190 1070 970 890 810 730 660 605 550 500 454 414 380 344 304 285 250 225 205 190 170 150 135 125
NOTE: 1. Based on dc-Measurement at Thermal Equilibrium. 2. Surge current is a non-repetitive, 8.3ms pulse width square wave or equivalent sine-wave superimposed on IZT per JEDEC method 3. SUFFIX "A" FOR 5%
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Typical Characteristics
VZ, TEMPERATURE COEFFICIENT ( mV/ ) +12 +10 +8 +6 +4 +2 0 -2 -4 2 3 4 5 6 7 8 9 10 11 12
RANGE VZIZT
VZ, TEMPERATURE COEFFICIENT ( mV/ )
100 70 50 30 20 10 7 5 3 2 1 10 20 30 50 70 100 VZ, ZENER VOLTAGE (VOLTS)
RANGE VZIZT
FiG.1 Range for Units to 12 Volts
175 VZ, TEMPERATURE COEFFICIENT ( mV/ ) JL, JUMCTION TO LEAD THERMAL 150 125 100 75 50 25 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 L, LEAD LENGTH TO HEAT SINK (INCHES) +6 +4 +2 0
VZ, ZENER VOLTAGE (VOLTS)
FiG.2 Range for Units to 12 to 36 Volts
VZIZ TA=25
20mA
0.01mA 1mA
-2 -4
NOTE:BELOW 3 VOLTS AAND ABOCE 8 VOLTS CHANGES IN ZENER CURRENT DO NOT
3
4
5
6
7
8
FIG.3 Temperature Coefficients
1000 700 500 200 100 70 50 20 10 7 5 2 1 1 2 3 5 7 10 20
Iz=1mA
Lead V.S. JL
FIG.4 Temperature Coefficients
400 300 200 C, CAPACITANCE (PF)
VZ, ZENER VOLTAGE (VOLTS)
VZ V.S. JL
ZZDYNAMIC IMPEDANCE (OHNS)
Tj=25 Iz(ms)=0.1Iz(do) f=60hz
0VBIAS
5mA
100 50 20 10 8 4 1 2
0VBIAS
20mA
50% OF BREAKDOWNBIAS
30
50 70
100
5
10
20
50
100
VZ, ZENER CURRENT (mA)
FIG. Typical Thermal 5
Resistance V.S. Lead
1.25
FIG.6 Effect of Zener Current
VZ, NOMINAL VZ (VOLTS)
PD ,MAXIMUM DISSIPATION (WATTS)
1.0 0.75 0.5 0.25 0 20 40 60 80 100 120 140 160 TL, LEAD TEMPERATURE (OC) 180 200
FIG.7 Power Temperature Derating Curve
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