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.
http://onsemi.com
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
1
Cathode
2
Anode
SOD−123
CASE 425
STYLE 1
2
Mechanical Characteristics:
CASE: Void-free, transfer-molded, thermosetting plastic case
FINISH: Corrosion resistant finish, easily solderable
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
1
260°C for 10 Seconds
MARKING DIAGRAM
POLARITY: Cathode indicated by polarity band
FLAMMABILITY RATING: UL 94 V−0
1
MAXIMUM RATINGS
Rating
Total Power Dissipation on FR−5 Board,
(Note 1) @ TL = 75°C
Derated above 75°C
Symbol
Max
Unit
500
6.7
mW
mW/°C
°C/W
PD
Thermal Resistance, (Note 2)
Junction−to−Ambient
RqJA
340
Thermal Resistance, (Note 2)
Junction−to−Lead
RqJL
150
°C/W
TJ, Tstg
−55 to
+150
°C
Junction and Storage Temperature Range
xx M G
G
xx = Device Code (Refer to page 3)
M
= Date Code
G
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Shipping †
MMSZ4xxxT1
SOD−123
3000/Tape & Reel
MMSZ4xxxT1G
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.
Package
SOD−123
(Pb−Free)
3000/Tape & Reel
MMSZ4xxxT3
SOD−123
10000/Tape & Reel
MMSZ4xxxT3G
SOD−123
(Pb−Free)
10000/Tape & Reel
Device
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
DEVICE MARKING INFORMATION
See specific marking information in the device marking
column of the Electrical Characteristics table on page 3 of 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.
© Semiconductor Components Industries, LLC, 2005
August, 2005 − Rev. 7
1
Publication Order Number:
MMSZ4678T1/D
