Document
®
WON-TOP ELECTRONICS
Features
Glass Passivated Die Construction
1.0W Power Dissipation 3.3V – 330V Nominal Zener Voltage 5% Standard Vz Tolerance Low Inductance For Use in Voltage Regulator or Reference Plastic Case Material has UL Flammability
Classification Rating 94V-0
A C
Mechanical Data
Case: SMA/DO-214AC, Molded Plastic Terminals: Solder Plated, Solderable
per MIL-STD-750, Method 2026 Polarity: Cathode Band Marking: Device Code Weight: 0.064 grams (approx.) Lead Free: For RoHS / Lead Free Version,
Add “-LF” Suffix to Part Number, See Page 5
1SMA4728A – SZ1330A
1.0W SURFACE MOUNT ZENER DIODE
Pb
B
F H
G E
SMA/DO-214AC
Dim Min Max
A 2.29 2.92
B 4.00 4.60
C 1.27 1.90
D
0.152
0.305
E 4.80 5.30
F 2.00 2.44
G
0.051
0.203
H 0.76 1.52
All Dimensions in mm
D
Maximum Ratings @TA=25°C unless otherwise specified
Characteristic
Power Dissipation at TL = 75°C (Note 1)
Forward Voltage @ IF = 200mA Thermal Resistance, Junction to Ambient (Note 2) Thermal Resistance, Junction to Lead (Note 2) Operating and Storage Temperature Range
Symbol
PD
VF R JA R JL TJ, TSTG
Value
1.0
1.2 125 30 -65 to +150
Note: 1. Mounted on FR-4 PCB with 8.0 x 8.0 x 2.0mm copper pads. 2. Mounted on 25.4 x 21.6 x 1.6mm ceramic substrate with minimum recommended pad layout.
Unit W V
°C/W °C
© Won-Top Electronics Co., Ltd. Revision: September, 2012
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1SMA4728A – SZ1330A
1.0
PD, POWER DISSIPATION (W)
0.8
0.6 Mounted on FR-4 PCB with 8.0 x 8.0 x 2.0mm Copper Pads
0.4
0.2
ZZ, DYMANIC IMPEDANCE (Ω)
0 0
10000
1000
100
10
25 50 75 100 125 TL, LEAD TEMPERATURE (°C) Fig. 1 Power Derating Curve
150
TJ = 25°C IZ(RMS) = 0.1 IZ(DC)
VZ = 200V VZ = 180V VZ = 150V
VZ = 91V VZ = 56V
VZ = 30V
VZ = 6.2V
1 0.5 1
10 100 500
IZT, ZENER TEST CURRENT (mA) Fig. 3 Dynamic Resistance vs. Zener Current
10
1
IF, INSTANTANEOUS FORWARD CURRENT (A)
0.1
TJ = 25°C Pulse Width = 300µs 1% Duty Cycle
0.01 0.6 0.8 1.0 1.2 1.4 1.6 VF, INSTANTANEOUS FORWARD VOLTAGE (V) Fig. 5 Typical Forward Characteristics
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CJ, JUNCTION CAPACITANCE (pF)
ZZ, DYMANIC IMPEDANCE (Ω)
θVZ, TEMPERATURE COEFFICIENT (mV/°C)
®
500
WON-TOP ELECTRONICS
450
400
350
300
250
VZ @ IZT
200
150
100
50
0 0
1000
50 100 150 200 250 VZ, ZENER VOLTAGE (V)
Fig. 2 Typical Temperature Coefficients
300
TJ = 25°C 100
IZT = 5.0mA IZT = 10mA IZT = 20mA
10
IZT = 100mA 1
0.1 1
10 100 1000 VZ, ZENER VOLTAGE (V) Fig. 3 Dynamic Resistance vs. Zener Voltage
1000
50% VZ Bias
Zero Bias
100
TJ = 25°C f = 1MHz
10 1
10 100
VZ, NOMINAL ZENER VOLTAGE (V) Fig. 6 Junction Capacitance vs. Nominal Zener Voltage
© Won-Top Electronics Co., Ltd. Revision: September, 2012
® WON-TOP ELECTRONICS
1SMA4728A – SZ1330A
Electrical Characteristics (@TA=25°C unless otherwise specified) Table 1
Type Number
Device Marking
Nominal Zener Voltage
(Note 2)
Test Current
Maximum Zener Impedance (Note 3)
Maximum Leakage Current
(Note 1)
Code
VZ @ IZT
IZT Z.