Diodes MMBD4448W User Manual

Features

• Fast Switching Speed

• Small Surface Mount Package

• For General Purpose Switching Applications

• High Conductance

• Lead, Halogen and Antimony Free, RoHS Compliant "Green"

Device (Notes 1, 2 and 3)

SOT-323

Top View

MMBD4448W

SURFACE MOUNT FAST SWITCHING DIODE

Mechanical Data

• 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-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)

Top View

Internal Schematic

Ordering Information (Notes 3 & 4)

Part Number Case Packaging

MMBD4448W-7-F SOT-323 3000/Tape & Reel

Notes: 1. No purposefully added lead. Halogen and Antimony Free.

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

3. Product manufactured with Green Molding Compound and does not contain Halogens or Sb

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

Fire Retardants.

2O3

Marking Information

Date Code Key

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

Code 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

KA3

YM

KA3 = Product Type Marking Code
YM = Date Code Marking
Y = Year (ex: N = 2002)
M = Month (ex: 9 = September)

MMBD4448W

Document number: DS30095 Rev. 12 - 2

1 of 4

www.diodes.com

February 2011

© Diodes Incorporated

)

θ

(BR)

r

P, P

O

R

PATIO

N

N

TAN

T

NEO

US F

O

RWARD C

URR

N

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 4)
Average Rectified Output Current (Note 4)
Non-Repetitive Peak Forward Surge Current @ t = 1.0μs

@ t = 1.0s

Thermal Characteristics

Characteristic Symbol Value Unit

Power Dissipation (Note 4)
Thermal Resistance Junction to Ambient Air (Note 4)
Operating and Storage Temperature Range

V

V

RRM

V

RWM

VR

V

R(RMS

I

I

FSM

P

R

T

J,TSTG

FM

I

RM

O

MMBD4448W

D
JA

100 V

75 V

53 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 5)

Forward Voltage

Reverse Current (Note 5)

Total Capacitance
Reverse Recovery Time

Notes: 4. 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.

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

V

R

V

F

I

⎯

R

C

⎯

T

t

⎯

rr

75

0.62

⎯
⎯

⎯

⎯

0.72

0.855

1.0

1.25

1.0
50
30
25

2.0 pF

4.0 ns

V

IR = 10μA
I

F

I

F

V

I

F

I

F

V

μA

V

μA
μA

V

nA

V
VR = 0, f = 1.0MHz
I

F

I

r

= 5.0mA
= 10mA
= 100mA
= 150mA

= 75V

R

= 75V, TJ = 150°C

R

= 25V, TJ = 150°C

R

= 20V

R

= IR = 10mA,

= 0.1 x IR, RL = 100Ω

250

1,000

(mA)

200

(mW)

E

100

150

10

DISSI

100

WE

1

D

50

A

S

0

0120

T , AMBIENT TEMPERATURE ( C)

A

8040 160 200

°

Fig. 1 Power Derating Curve

F

I, I

0.1
0

V , INSTANT ANEOUS FORWARD VOLTAGE (V)

F

1.61.20.4 0.8

Fig. 2 Typical Forward Charact er istics

MMBD4448W

Document number: DS30095 Rev. 12 - 2

2 of 4

www.diodes.com

February 2011

© Diodes Incorporated