User Manual

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MMBD4448H

Document number: DS30176 Rev. 10 - 2

1 of 4

www.diodes.com

February 2011

MMBD4448H

SURFACE MOUNT SWITCHING DIODE

Features

• Fast Switching Speed

• Surface Mount Package Ideally Suited for Automated Insertion

• For General Purpose Switching Applications

• High Conductance

• Lead Free/RoHS Compliant (Note 1)

Mechanical Data

• Case: SOT23

• Case Material: Molded Plastic. 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: 0.008 grams (approximate)

Ordering Information (Note 2)

Part Number Case Packaging

MMBD4448H-7-F SOT23 3000/Tape & Reel

Notes: 1. No purposefully added lead.

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

Marking Information

Date Code Key

Year 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015

Code M 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

SOT23

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
MMBD4448H SURFACE MOUNT SWITCHING DIODE Features Mechanical Data • • • • • • • Fast Switching Speed Surface Mount Package Ideally Suited for Automated Insertion For General Purpose Switching Applications High Conductance Lead Free/RoHS Compliant (Note 1) • • • • Case: SOT23 Case Material: Molded Plastic. 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).
PAGE 2
MMBD4448H 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 3) Average Rectified Output Current (Note 3) Non-Repetitive Peak Forward Surge Current Value 100 Unit V 80 V V mA mA IFSM 57 500 250 4.0 1.
PAGE 3
MMBD4448H 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 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 SOT23 Dim Min Max Typ A 0.37 0.51 0.40 B 1.20 1.40 1.30 C 2.30 2.50 2.40 D 0.89 1.03 0.915 F 0.45 0.60 0.535 G 1.78 2.05 1.83 H 2.80 3.00 2.90 J 0.013 0.
PAGE 4
MMBD4448H 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.