Owner's manual

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MMBD4448W

Document number: DS30095 Rev. 12 - 2

1 of 4

www.diodes.com

February 2011

MMBD4448W

SURFACE MOUNT FAST SWITCHING DIODE

Features

• Fast Switching Speed

• Small Surface Mount Package

• For General Purpose Switching Applications

• High Conductance

• Lead, Halogen and Antimony Free, RoHS Compliant "Green"

Device (Notes 1, 2 and 3)

Mechanical Data

• Case: SOT-323

• Case Material: Molded Plastic, "Green" Molding Compound,

Note 5. UL Flammability Classification Rating 94V-0

• Moisture Sensitivity: Level 1 per J-STD-020

• Terminals: Matte Tin Finish annealed over Alloy 42 leadframe

(Lead Free Plating). Solderable per MIL-STD-202, Method 208

• Polarity: See Diagram

• Weight: 0.006 grams (approximate)

Ordering Information (Notes 3 & 4)

Part Number Case Packaging

MMBD4448W-7-F SOT-323 3000/Tape & Reel

Notes: 1. No purposefully added lead. Halogen and Antimony Free.

2. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com.

3. Product manufactured with Green Molding Compound and does not contain Halogens or Sb

Fire Retardants.

4. For packaging details, go to our website at http://www.diodes.com.

Marking Information

Date Code Key

Year 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015

Code N P R S T U V W X Y Z A B C

Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Code 1 2 3 4 5 6 7 8 9 O N D

Top View

SOT-323

Top View

Internal Schematic

KA3 = Product Type Marking Code

YM = Date Code Marking

Y = Year (ex: N = 2002)

M = Month (ex: 9 = September)

KA3

Summary of content (4 pages)

PAGE 1
MMBD4448W SURFACE MOUNT FAST SWITCHING DIODE Features Mechanical Data • • • • • • • Fast Switching Speed Small Surface Mount Package For General Purpose Switching Applications High Conductance Lead, Halogen and Antimony Free, RoHS Compliant "Green" Device (Notes 1, 2 and 3) • • • • Case: SOT-323 Case Material: Molded Plastic, "Green" Molding Compound, Note 5.
PAGE 2
MMBD4448W Maximum Ratings @TA = 25°C unless otherwise specified Characteristic Non-Repetitive Peak Reverse Voltage Symbol VRM VRRM VRWM VR VR(RMS) IFM IO Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage RMS Reverse Voltage Forward Continuous Current (Note 4) Average Rectified Output Current (Note 4) Non-Repetitive Peak Forward Surge Current Value 100 Unit V 75 V V mA mA IFSM 53 500 250 4.0 1.
PAGE 3
MMBD4448W 3.0 f = 1MHz CT, TOTAL CAPACITANCE (pF) IR, INSTANTANEOUS REVERSE CURRENT (nA) 10,000 1,000 100 10 1 0.1 2.5 2.0 1.5 1.0 0.5 0 0 20 40 60 80 100 VR, INSTANTANEOUS REVERSE VOLTAGE (V) Fig. 3 Typical Reverse Characteristics 0 10 20 30 40 VR, DC REVERSE VOLTAGE (V) Fig. 4 Total Capacitance vs. Reverse Voltage Package Outline Dimensions A SOT-323 Dim Min Max Typ A 0.25 0.40 0.30 B 1.15 1.35 1.30 C 2.00 2.20 2.10 D 0.65 G 1.20 1.40 1.30 H 1.80 2.20 2.15 J 0.0 0.10 0.05 K 0.90 1.
PAGE 4
MMBD4448W IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, 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.