MMSZ5221BT1 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
1
2
• Wide Zener Reverse Voltage Range − 2.4 V to 110 V
• Package Designed for Optimal Automated Board Assembly
• Small Package Size for High Density Applications
• General Purpose, Medium Current
• ESD Rating of Class 3 (>16 kV) per Human Body Model
• Pb−Free Packages are Available
Cathode
Anode
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
xx = Specific Device Code
M
= Date Code
MAXIMUM RATINGS
Rating
Symbol
Max
Unit
ORDERING INFORMATION
Total Power Dissipation on FR−5 Board,
P
D
500
6.7
mW
mW/°C
(Note 1) @ T = 75°C
Derated above 75°C
†
L
Device**
Package
Shipping
MMSZ52xxBT1
SOD−123
3000/Tape & Reel
3000/Tape & Reel
Thermal Resistance, (Note 2)
Junction−to−Ambient
R
340
150
°C/W
°C/W
°C
q
JA
MMSZ52xxBT1G SOD−123
(Pb−Free)
Thermal Resistance, (Note 2)
Junction−to−Lead
R
q
JL
MMSZ52xxBT3
SOD−123 10,000/Tape & Reel
Junction and Storage Temperature Range T , T
−55 to
+150
J
stg
MMSZ52xxBT3G SOD−123 10,000/Tape & Reel
(Pb−Free)
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.
**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.
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:
January, 2005 − Rev. 5
MMSZ5221BT1/D
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