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MMBD4448W
SURFACE MOUNT FAST SWITCHING DIODE
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Features
* * * * * Fast Switching Speed Ultra-Small Surface Mount Package For General Purpose Switching Applications High Conductance Lead, Halogen and Antimony Free, RoHS Compliant "Green" Device (Notes 3, 4 and 5)
Mechanical Data
* * * * * * * * * SOT-323 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-020D Terminals: Solderable per MIL-STD-202, Method 208 Lead Free Plating (Matte Tin Finish annealed over Alloy 42 leadframe). Polarity: See Diagram Marking Information: See Page 2 Ordering Information: See Page 2 Weight: 0.006 grams (approximate)
TOP VIEW
TOP VIEW Internal Schematic
Maximum Ratings
@TA = 25C unless otherwise specified Symbol VRM VRRM VRWM VR VR(RMS) IFM IO @ t = 1.0s @ t = 1.0s IFSM Value 100 75 53 500 250 4.0 2.0 Unit V V V mA mA A
Characteristic Non-Repetitive Peak Reverse Voltage Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage RMS Reverse Voltage Forward Continuous Current (Note 1) Average Rectified Output Current (Note 1) Non-Repetitive Peak Forward Surge Current
Thermal Characteristics
Characteristic Power Dissipation (Note 1) Thermal Resistance Junction to Ambient Air (Note 1) Operating and Storage Temperature Range Symbol PD RJA TJ, TSTG Value 200 625 -65 to +150 Unit mW C/W C
Electrical Characteristics
Characteristic Reverse Breakdown Voltage (Note 2) Forward Voltage
@TA = 25C unless otherwise specified Symbol V(BR)R VF Min 75 0.62 Max 0.72 0.855 1.0 1.25 1.0 50 30 25 2.0 4.0 Unit V V A A A nA pF ns Test Condition IR = 10A IF = 5.0mA IF = 10mA IF = 100mA IF = 150mA VR = 75V VR = 75V, TJ = 150C VR = 25V, TJ = 150C VR = 20V VR = 0, f = 1.0MHz IF = IR = 10mA, Irr = 0.1 x IR, RL = 100
Reverse Current (Note 2) Total Capacitance Reverse Recovery Time
Notes: 1. 2. 3. 4. 5.
IR CT trr
Device mounted on FR-4 PCB, 1 inch x 0.85 inch x 0.062 inch; pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. Short duration pulse test used to minimize self-heating effect. No purposefully added lead. Halogen and Antimony Free. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com/products/lead_free/index.php. Product manufactured with Green Molding Compound and does not contain Halogens or Sb2O3 Fire Retardants.
MMBD4448W
Document number: DS30095 Rev. 11 - 2
1 of 3 www.diodes.com
June 2008
(c) Diodes Incorporated
MMBD4448W
IF, INSTANTANEOUS FORWARD CURRENT (mA)
0 40 80 160 120 TA, AMBIENT TEMPERATURE (C) Fig. 1 Power Derating Curve 200 250
1,000
PD, POWER DISSIPATION (mW)
200
100
150
10
100
50
1
0
0.1
0
0.4 0.8 1.2 1.6 VF, INSTANTANEOUS FORWARD VOLTAGE (V) Fig. 2 Typical Forward Characteristics
IR, INSTANTANEOUS REVERSE CURRENT (nA)
10,000
3
f = 1MHz
CT, TOTAL CAPACITANCE (pF)
0 20 40 60 80 100 VR, INSTANTANEOUS REVERSE VOLTAGE (V) Fig. 3 Typical Reverse Characteristics
1,000
2.5
2
100
1.5
10
1
1
0.5
0.1
0 0
30 10 20 40 50 VR, DC REVERSE VOLTAGE (V) Fig. 4 Total Capacitance vs. Reverse Voltage
Ordering Information
Part Number MMBD4448W-7-F
Notes:
(Notes 5 & 6) Case SOT-323 Packaging 3000/Tape & Reel
6. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Marking Information
KA3 = Product Type Marking Code YM = Date Code Marking Y = Year ex: N = 2002 M = Month ex: 9 = September
KA3
Date Code Key Year Code Month Code
2002 N Jan 1
2003 P Feb 2
2004 R Mar 3
2005 S Apr 4
YM
2006 T May 5
2007 U Jun 6 Jul 7
2008 V Aug 8
2009 W Sep 9
2010 X Oct O
2011 Y Nov N
2012 Z Dec D
MMBD4448W
Document number: DS30095 Rev. 11 - 2
2 of 3 www.diodes.com
June 2008
(c) Diodes Incorporated
MMBD4448W Package Outline Dimensions
A
TOP VIEW
BC
G H K M
J
D
F
L
SOT-323 Dim Min Max A 0.25 0.40 B 1.15 1.35 C 2.00 2.20 D 0.65 Nominal F 0.30 0.40 G 1.20 1.40 H 1.80 2.20 J 0.0 0.10 K 0.90 1.00 L 0.25 0.40 M 0.10 0.18 0 8 All Dimensions in mm
Suggested Pad Layout
Y Z C
Dimensions Value (in mm) Z X Y C E 2.8 0.7 0.9
1.9 1.0
X
E
IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated.
MMBD4448W
Document number: DS30095 Rev. 11 - 2
3 of 3 www.diodes.com
June 2008
(c) Diodes Incorporated

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