MMBZ5221B - MMBZ5259B
350mW SURFACE MOUNT ZENER DIODE
Features
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Planar Die Construction
350mW Power Dissipation on FR-4 PCB
General Purpose, Medium Current
Ideally Suited for Automated Assembly Processes
Lead, Halogen and Antimony Free, RoHS Compliant "Green"
Device (Notes 2 and 3)
Qualified to AEC-Q101 Standards for High Reliability
Mechanical Data
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Case: SOT-23
Case Material: Molded Plastic. UL Flammability Classification
Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020
Terminal Connections: See Diagram
Terminals: Matte Tin Finish annealed over Alloy 42 leadframe
(Lead Free Plating). Solderable per MIL-STD-202, Method 208
Marking Information: See Page 4
Ordering Information: See Page 4
Weight: 0.008 grams (approximate)
Top View
Device Schematic
Maximum Ratings
@T
A
= 25°C unless otherwise specified
Forward Voltage
Characteristic
@ I
F
= 10mA
Symbol
V
F
Value
0.9
Unit
V
Thermal Characteristics
Characteristic
Power Dissipation (Note 1)
Thermal Resistance, Junction to Ambient Air (Note 1)
Operating and Storage Temperature Range
Notes:
Symbol
P
D
R
θ
JA
T
J,
T
STG
Value
350
357
-65 to +150
Unit
mW
°C/W
°C
1. Mounted on FR4 PC Board with recommended pad layout which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf
2. No purposefully added lead. Halogen and Antimony Free.
3. Product manufactured with Data Code V9 (week 33, 2008) and newer are built with Green Molding Compound. Product manufactured prior to Date Code
V9 are built with Non-Green Molding Compound and may contain Halogens or Sb
2
O
3
Fire Retardants.
MMBZ5221B - MMBZ5259B
Document number: DS18011 Rev. 21 - 2
1 of 5
www.diodes.com
August 2010
© Diodes Incorporated
MMBZ5221B - MMBZ5259B
IMPORTANT NOTICE
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
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website, harmless against all damages.
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hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2010, Diodes Incorporated
www.diodes.com
MMBZ5221B - MMBZ5259B
Document number: DS18011 Rev. 21 - 2
5 of 5
www.diodes.com
August 2010
© Diodes Incorporated
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