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MMBD4448HT /HTA /HTC /HTS
SURFACE MOUNT FAST SWITCHING DIODE
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Features
* * * * * * Ultra-Small Surface Mount Package Fast Switching Speed For General Purpose Switching Applications High Conductance Lead Free/RoHS Compliant (Note 2) "Green" Device (Notes 3 and 4)
Mechanical Data
* * * * * * * * * SOT-523 Case: SOT-523 Case Material: Molded Plastic, "Green" Molding Compound. 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 Diagrams Below Marking Information: See Diagrams Below & Page 2 Ordering Information: See Page 2 Weight: 0.002 grams (approximate)
TOP VIEW
MMBD4448HT Marking: A3
MMBD4448HTA Marking: A6
MMBD4448HTC Marking: A7
MMBD4448HTS Marking: AB
Maximum Ratings
@TA = 25C unless otherwise specified Symbol VRM VRRM VRWM VR VR(RMS) IFM IO IFSM Value 100 80 57 500 250 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 Average Rectified Output Current Non-Repetitive Peak Forward Surge Current (Note 1) (Note 1) @ t = 1.0s @ t = 1.0s
Thermal Characteristics
Characteristic Power Dissipation Thermal Resistance Junction to Ambient Operating and Storage Temperature Range (Note 1) (Note 1) Symbol PD RJA TJ, TSTG Value 150 833 -65 to +150 Unit mW C/W C
Electrical Characteristics
Characteristic Reverse Breakdown Voltage Forward Voltage
@TA = 25C unless otherwise specified (Note 5) Symbol V(BR)R VF Min 80 0.62 Max 0.72 0.855 1.0 1.25 100 50 30 25 3.5 4.0 Unit V V Test Condition IR = 2.5A IF = 5.0mA IF = 10mA IF = 100mA IF = 150mA VR = 70V VR = 75V, TJ = 150C VR = 25V, TJ = 150C VR = 20V VR = 6V, f = 1.0MHz VR = 6V, IF = 5mA
Leakage Current Total Capacitance Reverse Recovery Time
Notes: 1. 2. 3. 4.
(Note 5)
IR CT trr
nA A A nA pF ns
Device mounted on FR-4 PC board with recommended pad layout, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. No purposefully added lead. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com/products/lead_free/index.php. Product manufactured with Date Code UO (week 40, 2007) and newer are built with Green Molding Compound. Product manufactured prior to Date Code UO are built with Non-Green Molding Compound and may contain Halogens or Sb2O3 Fire Retardants. 5. Short duration pulse test used to minimize self-heating effect.
MMBD4448HT /HTA /HTC /HTS
Document number: DS30263 Rev. 12 - 2
1 of 3 www.diodes.com
March 2009
(c) Diodes Incorporated
MMBD4448HT /HTA /HTC /HTS
250 IF, INSTANTANEOUS FORWARD CURRENT (mA) 1,000
PD , POWER DISSIPATION (mW)
200
100
150
10
100
50
1
0 0 40 120 160 80 200 TA, AMBIENT TEMPERATURE (C) Fig. 1 Power Derating Curve, Total Package
0.1
0
0.4 0.8 1.2 1.6 VF, INSTANTANEOUS FORWARD VOLTAGE (V) Fig. 2 Typical Forward Characteristics, Per Element
IR, INSTANTANEOUS REVERSE CURRENT (nA)
10,000
3
f = 1MHz
CT, TOTAL CAPACITANCE (pF)
1,000
2.5
2
100
1.5
10
1
1
0.5
0.1
0
60 80 100 20 40 VR, REVERSE VOLTAGE (V) Fig. 3 Typical Reverse Characteristics, Per Element
30 10 20 40 50 VR, DC REVERSE VOLTAGE (V) Fig. 4 Total Capacitance vs. Reverse Voltage, Per Element 0
0
Ordering Information
Part Number MMBD4448HT-7-F MMBD4448HTA-7-F MMBD4448HTC-7-F MMBD4448HTS-7-F
Notes:
(Note 6) Case SOT-523 SOT-523 SOT-523 SOT-523 Packaging 3000/Tape & Reel 3000/Tape & Reel 3000/Tape & Reel 3000/Tape & Reel
6. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Marking Information
xx = Product Type Marking Code (See Page 1 Diagrams) YM = Date Code Marking Y = Year (ex: N = 2002) M = Month (ex: 9 = September)
XXYM
Date Code Key Year Code Month Code
2001 M Jan 1
2002 N Feb 2
2003 P Mar 3
2004 R Apr 4
2005 S May 5
2006 T Jun 6
2007 U Jul 7
2008 V Aug 8
2009 W Sep 9
2010 X Oct O
2011 Y Nov N
2012 Z Dec D March 2009
MMBD4448HT /HTA /HTC /HTS
Document number: DS30263 Rev. 12 - 2
2 of 3 www.diodes.com
(c) Diodes Incorporated
MMBD4448HT /HTA /HTC /HTS Package Outline Dimensions
A
BC
G H K M
N
J
D
L
SOT-523 Dim Min Max Typ A 0.15 0.30 0.22 B 0.75 0.85 0.80 C 1.45 1.75 1.60 D 0.50 G 0.90 1.10 1.00 H 1.50 1.70 1.60 J 0.00 0.10 0.05 K 0.60 0.80 0.75 L 0.10 0.30 0.22 M 0.10 0.20 0.12 N 0.45 0.65 0.50 0 8 All Dimensions in mm
Suggested Pad Layout
Y
Z
C
Dimensions Value (in mm) Z 1.8 X 0.4 Y 0.51 C 1.3 E 0.7
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.
MMBD4448HT /HTA /HTC /HTS
Document number: DS30263 Rev. 12 - 2
3 of 3 www.diodes.com
March 2009
(c) Diodes Incorporated

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