Dimensions in inches and (millimeters)
0.157 (3.99)
0.177 (4.50)
0.006 (0.152)
0.012 (0.305)
0.030 (0.76)
0.060 (1.52) 0.008 (0.203) MAX.
0.194 (4.93)
0.208 (5.28)
0.100 (2.54)
0.110 (2.79)
0.078 (1.98)
0.090 (2.29)
0.049 (1.25)
0.065 (1.65)
Cathode Band
Features
• Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
• For surface mounted applications
• Low Zener impedance
• Low regulation factor
• High temperature soldering guaranteed:
250°C/10 seconds at terminals
Maximum Ratings and Thermal Characteristics(TC= 25°C unless otherwise noted)
Parameter Symbol Value Unit
Power dissipation at TL= 75°CP
tot 1.0 W
Maximum Junction Temperature TJ150 °C
Storage Temperature Range TS–65 to +150 °C
Mechanical Data
Case: JEDEC DO-214AC molded plastic over
passivated junction
Terminals: Solder plated, solderable per MIL-STD-
750, Method 2026
Polarity: Color band denotes positive end (cathode)
Mounting Position: Any
Weight: 0.002 ounce, 0.064 gram
Packaging Codes – Options (Antistatic):
SML4728 – SML4737A:
2P – 1.8K per 7” plastic Reel (12mm tape), 36K/carton
2Q – 7.5K per 13” plastic Reel (12mm tape), 75K/carton
SML4738 – SML4764A:
51 – 1K per Bulk box, 20K/carton
61 – 1.8K per 7” plastic Reel (12mm tape), 36K/carton
5A – 7.5K per 13” plastic Reel (12mm tape), 75K/carton
SML4728 thru SML4764A
Surface Mount Zener Diodes
Zener Voltage 3.3 to 100V
Power Dissipation 1.0W
DO-214AC (SMA)
4/24/01
0.094 MAX.
(2.38 MAX.)
0.220
(5.58) REF
0.066 MIN.
(1.68 MIN.)
0.052 MIN.
(1.32 MIN.)
Mounting Pad Layout
Extended
Voltage Range
SML4728 thru SML4764A
Surface Mount Zener Diodes
Electrical Characteristics(TA= 25°C unless otherwise noted) VF= 1.2V Max@IF= 200 mA for all types.
Nominal Maximum Dynamic Maximum
Zener Impedance Maximum DC Reverse Surge
Device Voltage Test Leakage Current Current
Type Marking at IZT Current ZZT at
Code VZ(1) IZT IZT ZZK at IZK IZK(1) IRVRIRM(2)
(Volts) (mA) (W) (W) (mA) (µA) (Volts) (mApk)
SML4728 3P3 3.3 76.0 10.0 400 1.0 100 1.0 1380
SML4729 3P6 3.6 69.0 10.0 400 1.0 100 1.0 1260
SML4730 3P9 3.9 64.0 9.0 400 1.0 50 1.0 1190
SML4731 4P3 4.3 58.0 9.0 400 1.0 10 1.0 1070
SML4732 4P7 4.7 53.0 8.0 500 1.0 10 1.0 970
SML4733 5P1 5.1 49.0 7.0 550 1.0 10 1.0 890
SML4734 5P6 5.6 45.0 5.0 600 1.0 10 2.0 810
SML4735 6P2 6.2 41.0 2.0 700 1.0 10 3.0 730
SML4736 6P8 6.8 37.0 3.5 700 1.0 10 4.0 660
SML4737 7P5 7.5 34.0 4.0 700 0.5 10 5.0 605
SML4738 8P2 8.2 31.0 4.5 700 0.5 10 6.0 550
SML4739 9P1 9.1 28.0 5.0 700 0.5 10 7.0 500
SML4740 10 10 25.0 7.0 700 0.25 10 7.6 454
SML4741 11 11 23.0 8.0 700 0.25 5 8.4 414
SML4742 12 12 21.0 9.0 700 0.25 5 9.1 380
SML4743 13 13 19.0 10.0 700 0.25 5 9.9 344
SML4744 15 15 17.0 14.0 700 0.25 5 11.4 305
SML4745 16 16 15.5 16.0 700 0.25 5 12.2 285
SML4746 18 18 14.0 20.0 750 0.25 5 13.7 250
SML4747 20 20 12.5 22.0 750 0.25 5 15.2 225
SML4748 22 22 11.5 23.0 750 0.25 5 16.7 205
SML4749 24 24 10.5 25.0 750 0.25 5 18.2 190
SML4750 27 27 9.5 35.0 750 0.25 5 20.6 170
SML4751 30 30 8.5 40.0 1000 0.25 5 22.8 150
SML4752 33 33 7.5 45.0 1000 0.25 5 25.1 135
SML4753 36 36 7.0 50.0 1000 0.25 5 27.4 125
SML4754 39 39 6.5 60.0 1000 0.25 5 29.7 115
SML4755 43 43 6.0 70.0 1500 0.25 5 32.7 110
SML4756 47 47 5.5 80.0 1500 0.25 5 35.8 95
SML4757 51 51 5.0 95.0 1500 0.25 5 38.8 90
SML4758 56 56 4.5 110 2000 0.25 5 42.6 80
SML4759 62 62 4.0 125 2000 0.25 5 47.1 70
SML4760 68 68 3.7 150 2000 0.25 5 51.7 65
SML4761 75 75 3.3 175 2000 0.25 5 56.0 60
SML4762 82 82 3.0 200 3000 0.25 5 62.2 55
SML4763 91 91 2.8 250 3000 0.25 5 69.2 50
SML4764 100 100 2.5 350 3000 0.25 5 76.0 45
Notes: (1) Standard voltage tolerance is 10%, Suffix A ±5%
(2) Surge current is a non-repetitive, 8.3ms pulse width square wave or equivalent sine-wave superimposed on IZT per JEDEC Method
(3) Maximum steady state power dissipation is 1.0 watt at TT= 75°C
25 50 75 100 125 150 175
0
0.25
0.5
0.75
1.0
0.5 10 100 500
1
10
100
1,000
0.4 0.6 0.8 1.0 1.2 1.4 1.6
0.01
0.1
1
10
020 40 60 80 100
0.01
0.1
1
10
010 20 30 40 50 60 70 80 90 100
0
10
30
50
70
90
110
Terminals Temperature (°C)
PM(AV), Average Power Dissipation (W)
IZT, Zener Test Current (mA)
ZZ, Dynamic Zener Impedance (Ω)
Percent of Rated Zener Voltage (%)
Instantaneous Reverse Current (µA)
VZ, Zener Voltage (V)
ΘVZ, Temperature Coefficient (mV/°C)
Instantaneous Forward Voltage (V)
Instantaneous Forward Current (A)
Fig. 1 - Maximum Continuous Power
Dissipation
Fig. 3 - Typical Zener Impedance
Fig. 5 - Typical Temperature Coefficients
Fig. 2 - Typical Instantaneous Forward
Characteristics for SML4763
Fig. 4 - Typical Reverse Characteristics
60 Hz
Resistive or
Inductive Load
P.C.B. Mounted on
0.31 x 0.31 x 0.08" (8 x 8 x 2mm)
copper areas pads
Pulse width = 300µs
1% Duty Cycle
TJ = 25°C
TJ = 25°C
VZ = 91V
VZ = 56V
VZ = 30V
VZ = 6.2V
Tested at rated IZT
TJ = 25°C
TJ = 100°C
Ratings and
Characteristic Curves (TA= 25°C unless otherwise noted)
SML4728 thru SML4764A
Surface Mount Zener Diodes
