Diodes MMBD4448HW User Manual

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)

• "Green" Device (Notes 2 and 3)

Top View

MMBD4448HW

SURFACE MOUNT SWITCHING DIODE

Mechanical Data

• Case: SOT-323

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

(Note 3). 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)

SOT-323

Top View

Internal Schematic

Ordering Information (Notes 3 & 4)

Part Number Case Packaging

MMBD4448HW-7-F SOT-323 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 0627 (week 27, 2006) and newer are built with Green Molding Compound. Product manufactured prior to Date
Code 0627 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 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015

Code L 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

MMBD4448HW

Document number: DS30228 Rev. 8 - 2

KA1

YM

www.diodes.com

KA1= Product Type Marking Code
YM = Date Code Marking
Y = Year (ex: N = 2002)
M = Month (ex: 9 = September)

1 of 4

February 2011

© Diodes Incorporated

)

θ

(BR)

r

P

P

O

R

PATIO

N

T

T

O

U

FORWARD CUR

R

T

Maximum Ratings @T

= 25°C unless otherwise specified

A

Characteristic Symbol Value Unit

Non-Repetitive Peak Reverse Voltage
Peak Repetitive Reverse Voltage

Working Peak Reverse Voltage
DC Blocking Voltage

RMS Reverse Voltage
Forward Continuous Current (Note 5)
Average Rectified Output Current (Note 5)
Non-Repetitive Peak Forward Surge Current @ t = 1.0μs

@ t = 1.0s

Thermal Characteristics

Characteristic Symbol Value Unit

Power Dissipation (Note 5)
Thermal Resistance Junction to Ambient Air (Note 5)
Operating and Storage Temperature Range

V

T

V

RM

V

RRM

V

RWM

V

R

R(RMS

I

FM

I

O

I

FSM

P

D

R

JA

, T

J

STG

MMBD4448HW

100 V

80 V

57 V
500 mA
250 mA

4.0

1.0

A

200 mW
625

-65 to +150

°C/W

°C

Electrical Characteristics @T

= 25°C unless otherwise specified

A

Characteristic Symbol Min Max Unit Test Condition

Reverse Breakdown Voltage (Note 6)

Forward Voltage

Peak Reverse Current (Note 6)

Total Capacitance
Reverse Recovery Time

Notes: 5. 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.

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

V

V

F

I

⎯

R

C

⎯

T

t

⎯

r

250

80

R

0.62

⎯
⎯
⎯

⎯

0.72

0.855

1.0

1.25
100

50
30
25

3.5 pF

4.0 ns

V

IR = 2.5μA

= 5.0mA

I

F

= 10mA

I

F

V

I

= 100mA

F

= 150mA

I

F

V

nA

μA
μA

nA

= 70V

R

V

= 75V, TJ = 150°C

R

= 25V, TJ = 150°C

V

R

V

= 20V

R

VR = 6V, f = 1.0MHz
VR = 6V, IF = 5mA

1,000

(mA)

200

(mW)

EN

100

150

10

DISSI

100

S

WE
,

D

50

1

ANE
AN

0

0

40

T , AMBIENT TEMPERATURE ( C)

A

80

120

160

200

°

Fig. 1 Power Derating Curve (Note 5)

I, INS

F

0.1
0

V , INSTANTANEOUS FORWARD VOLTAGE (V)

F

1.61.20.4 0.8

Fig. 2 Typical Forward Characteristics

MMBD4448HW

Document number: DS30228 Rev. 8 - 2

2 of 4

www.diodes.com

February 2011

© Diodes Incorporated