ON Semiconductor MMSZ4678T1 Technical data
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MMSZ4678T1 Series
Preferred Device
Zener Voltage Regulators
500 mW SOD−123 Surface Mount
Three complete series of Zener diodes are offered in the convenient,
surface mount plastic SOD−123 package. These devices provide a
convenient alternative to the leadless 34−package style.
Features
• 500 mW Rating on FR−4 or FR−5 Board
• Wide Zener Reverse Voltage Range − 1.8 V to 43 V
• Package Designed for Optimal Automated Board Assembly
• Small Package Size for High Density Applications
• ESD Rating of Class 3 (>16 kV) per Human Body Model
• Pb−Free Packages are Available
Mechanical Characteristics:
CASE:
Void-free, transfer-molded, thermosetting plastic case
FINISH: Corrosion resistant finish, easily solderable
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
260°C for 10 Seconds
POLARITY: Cathode indicated by polarity band
FLAMMABILITY RATING: UL 94 V−0
MAXIMUM RATINGS
Rating Symbol Max Unit
Total Power Dissipation on FR−5 Board,
(Note 1) @ TL = 75°C
Derated above 75°C
Thermal Resistance, (Note 2)
Junction−to−Ambient
Thermal Resistance, (Note 2)
Junction−to−Lead
Junction and Storage Temperature Range TJ, T
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits are
exceeded, device functional operation is not implied, damage may occur and
reliability may be affected.
1. FR−5 = 3.5 X 1.5 inches, using the minimum recommended footprint.
2. Thermal Resistance measurement obtained via infrared Scan Method.
P
D
R
q
JA
R
q
JL
stg
500
6.7mWmW/°C
340 °C/W
150 °C/W
−55 to
+150
°C
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1
Cathode
2
1
2
Anode
SOD−123
CASE 425
STYLE 1
MARKING DIAGRAM
1
xx = Device Code (Refer to page 3)
M = Date Code
G = Pb−Free Package
(Note: Microdot may be in either location)
xx M G
G
ORDERING INFORMATION
Device Package Shipping
MMSZ4xxxT1 SOD−123 3000/Tape & Reel
MMSZ4xxxT1G SOD−123
(Pb−Free)
MMSZ4xxxT3 SOD−123 10000/Tape & Ree
MMSZ4xxxT3G SOD−123
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
3000/Tape & Reel
10000/Tape & Ree
†
© Semiconductor Components Industries, LLC, 2005
August, 2005 − Rev. 7
DEVICE MARKING INFORMATION
See specific marking information in the device marking
column of the Electrical Characteristics table on page 3 o f this
data sheet.
Devices listed in bold, italic are ON Semiconductor
Preferred devices. Preferred devices are recommended
choices for future use and best overall value.
1 Publication Order Number:
MMSZ4678T1/D
MMSZ4678T1 Series
ELECTRICAL CHARACTERISTICS (T
= 25°C unless
A
otherwise noted, VF = 0.95 V Max. @ IF = 10 mA)
Symbol Parameter
V
Reverse Zener Voltage @ I
Z
I
V
V
Reverse Current
ZT
I
Reverse Leakage Current @ V
R
Reverse Voltage
R
I
Forward Current
F
Forward Voltage @ I
F
ZT
R
F
I
I
F
VRV
Z
I
V
R
F
I
ZT
Zener Voltage Regulator
V
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2
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