MMBD4448HTA-7-F - DIODES INC

MMBD4448HT /HTA /HTC /HTS

Document number: DS30263 Rev. 13 - 2 1 of 4

www.diodes.com February 2011

MMBD4448HT /HTA /HTC /HTS

SURFACE MOUNT FAST SWITCHING DIODE

Features

• Ultra-Small Surface Mount Package

• Fast Switching Speed

• For General Purpose Switching Applications

• High Conductance

• Lead Free/RoHS Compliant (Note 1)

• "Green" Device (Notes 2 and 3)

Mechanical Data

• Case: SOT-523

• Case Material: Molded Plastic, “Green” Molding Compound. 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 Diagrams Below

• Weight: 0.002 grams (approximate)

Ordering Information (Note 4)

Part Number Case Packaging

MMBD4448HT-7-F SOT-523 3000/Tape & Reel

MMBD4448HTA-7-F SOT-523 3000/Tape & Reel

MMBD4448HTC-7-F SOT-523 3000/Tape & Reel

MMBD4448HTS-7-F SOT-523 3000/Tape & Reel

Notes: 1. No purposefully added lead.

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

3. 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.

4. 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

MMBD4448HT Marking: A3 MMBD4448HTA Marking: A6

SOT-523

MMBD4448HTC Marking: A7 MMBD4448HTS Marking: AB

TOP VIEW

xx = Product Type Marking Code (See Page 1 Diagrams)

YM = Date Code Marking

Y = Year (ex: N = 2002)

M = Month (ex: 9 = September)

MMBD4448HT /HTA /HTC /HTS

Document number: DS30263 Rev. 13 - 2 2 of 4

www.diodes.com February 2011

MMBD4448HT /HTA /HTC /HTS

Maximum Ratings @TA = 25°C unless otherwise specified

Characteristic Symbol Value Unit

Non-Repetitive Peak Reverse Voltage VRM 100 V

Peak Repetitive Reverse Voltage

Working Peak Reverse Voltage

DC Blocking Voltage

VRRM

VRWM

VR 80 V

RMS Reverse Voltage VR

(

RMS

)

57 V

Forward Continuous Current (Note 5) IFM 500 mA

Average Rectified Output Current (Note 5) IO 250 mA

Non-Repetitive Peak Forward Surge Current @ t = 1.0

@ t = 1.0s IFSM 4.0

1.0 A

Thermal Characteristics

Characteristic Symbol Value Unit

Power Dissipation (Note 5) PD 150 mW

Thermal Resistance Junction to Ambient (Note 5) R

JA 833 °C/W

Operating and Storage Temperature Range TJ, TSTG -65 to +150 °C

Electrical Characteristics @TA = 25°C unless otherwise specified

Characteristic Symbol Min Max Unit Test Condition

Reverse Breakdown Voltage (Note 6) V

(

)

R 80 ⎯ V IR = 2.5μA

Forward Voltage VF

0.62

⎯

0.72

0.855

1.0

1.25

IF = 5.0mA

IF = 10mA

IF = 100mA

IF = 150mA

Leakage Current (Note 6) IR ⎯

100

μA

VR = 70V

VR = 75V, TJ = 150°C

VR = 25V, TJ = 150°C

VR = 20V

Total Capacitance CT ⎯ 3.5 pF

VR = 6V, f = 1.0MHz

Reverse Recovery Time tr

⎯ 4.0 ns

VR = 6V, IF = 5mA

Notes: 5. Device mounted on FR-4 PC board with recommended pad layout, which can be found on our website at http://www.diodes.com.

6. Short duration pulse test used to minimize self-heating effect.

100

150

200

250

0120 16040 80 200

DISSI

(mW)

T , AMBIENT TEMPERA TURE ( C)

Fig. 1 Power Derating Curve, Total Package (Note 5)

100

1,000

0.1 01.61.20.4 0.8

I , INS

ANE

(mA)

V , IN STANT ANEOUS FORWARD VOLTAGE (V)

Fig. 2 Typical Forward Characteristics, Per Element

MMBD4448HT /HTA /HTC /HTS

Document number: DS30263 Rev. 13 - 2 3 of 4

www.diodes.com February 2011

MMBD4448HT /HTA /HTC /HTS

0.1

100

1,000

10,000

020 40 60 80 100

V , REVERSE VOL TAGE (V)

Fig. 3 Typical Reverse Characteristics, Per Element

I, INS

ANE

EVE

(nA )

0.5

1.0

2.5

2.0

1.5

3.0

01020 40

E (p

)

V , DC REVERSE VOL TAGE (V)

Fig . 4 Total Capacita nce vs . Reverse Volt age, Per Elem ent

f = 1MHz

Package Outline Dimensions

Suggested Pad Layout

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

α 0° 8° ⎯

All Dimensions in mm

Dimensions Value (in mm)

Z 1.8

X 0.4

Y 0.51

C 1.3

E 0.7

MMBD4448HT /HTA /HTC /HTS

Document number: DS30263 Rev. 13 - 2 4 of 4

www.diodes.com February 2011

MMBD4448HT /HTA /HTC /HTS

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. 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

trademark rights, nor the rights of others. Any Customer or user of this document or products described herein 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 Diodes Incorporated

website, harmless against all damages.

Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.

Should Customers purchase or use Diodes Incorporated p roducts for any unintended or una uthorized application, Customers shall indemnify and

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 p atents 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 pro ducts and an y

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.