MMSZ4678T1 Series
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
• Pb−Free Packages are Available
For Additional Pb−Free Options, Please Consult Factory
1
2
• 500 mW Rating on FR−4 or FR−5 Board
Cathode
Anode
• 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
SOD−123
CASE 425
STYLE 1
2
1
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
MARKING DIAGRAM
xx M
POLARITY: Cathode indicated by polarity band
FLAMMABILITY RATING: UL 94 V−0
xxx = Specific Device Code
M
= Date Code
MAXIMUM RATINGS
ORDERING INFORMATION
Rating
Symbol
Max
Unit
†
Total Power Dissipation on FR−5 Board,
P
D
Device**
Package
Shipping
500
6.7
mW
mW/°C
(Note 1) @ T = 75°C
L
MMSZ4xxxT1
SOD−123 3000/Tape & Reel
Derated above 75°C
Thermal Resistance, (Note 2)
Junction−to−Ambient
R
340
150
°C/W
°C/W
°C
MMSZ4xxxT1G
SOD−123 3000/Tape & Reel
(Pb−Free)
q
JA
Thermal Resistance, (Note 2)
Junction−to−Lead
R
q
JL
MMSZ4xxxT3
SOD−123 10,000/Tape & Reel
MMSZ4xxxT3G
SOD−123 10,000/Tape & Reel
(Pb−Free)
Junction and Storage Temperature Range
T , T
J
−55 to
+150
stg
*MMSZ4703 and MMSZ4711 Not Available in
10,000/Tape & Reel
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.
**The “T1” suffix refers to an 8 mm, 7 inch reel.
The “T3” suffix refers to an 8 mm, 13 inch reel.
†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.
1. FR−5 = 3.5 X 1.5 inches, using the minimum recommended footprint.
2. Thermal Resistance measurement obtained via infrared Scan Method.
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
1
Publication Order Number:
February, 2005 − Rev. 6
MMSZ4678T1/D