Diodes 1N4448HWT User Manual

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Features

 Fast Switching Speed
 Ultra-Small Surface Mount Package
 For General Purpose Switching Applications
 High Conductance
 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
 Halogen and Antimony Free. “Green” Device (Note 3)

1N4448HWT

SURFACE MOUNT FAST SWITCHING DIODE

Mechanical Data

 Case: SOD523
 Case Material: Molded Plastic, "Green" Molding Compound.

UL Flammability Classification Rating 94V-0

 Moisture Sensitivity: Level 1 per J-STD-020
 Terminal Connections: Cathode Band
 Terminals: Matte Tin Finish (Lead Free Plating) annealed over

Alloy 42 leadframe. Solderable per MIL-STD-202, Method 208

 Weight: 0.002 grams (approximate)

SOD523

Top View

Ordering Information (Notes 4 & 5)

Part Number (Note 6) Case Packaging

1N4448HWT-7 SOD523 3000/Tape & Reel

1N4448HWT-13 SOD523 10000/Tape & Reel

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.

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

5. 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 Sb

6. Dispensed in every other cavity of the tape.

Fire Retardants.

2O3

Marking Information

Maximum Ratings (@T

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
Average Rectified Output Current
Non-Repetitive Peak Forward Surge Current @t = 1.0μs

@t = 1.0s

Cathode Band

= +25°C, unless otherwise specified.)

A

1N4448HWT

Document number: DS30395 Rev. 10 - 2

T8

www.diodes.com

T8 = Product Type Marking Code

V

RM

V

RRM

V

RWM

V

R

V

R(RMS

I

FM

I

O

I

FSM

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100 V

80 V

57 V
250 mA
125 mA

2.0

1.0

A

September 2013

© Diodes Incorporated



(BR)

P, P

OWER

D

P

A

T

O

N

Thermal Characteristics

Characteristic Symbol Value Unit

Power Dissipation (Note 7)
Thermal Resistance Junction to Ambient (Note 7)
Operating and Storage Temperature Range

P

D

R

JA

T

, T

J

STG

Electrical Characteristics (@T

= +25°C, unless otherwise specified.)

A

Characteristic Symbol Min Max Unit Test Conditions

Reverse Breakdown Voltage (Note 8)

Forward Voltage

V

V

F

80

R

0.62







0.72

0.855

1.0

1.25

100

Peak Reverse Current (Note 8)

I

R



50
30
25

Total Capacitance

Reverse Recovery Time

Notes: 7. Part mounted on FR-4 board with recommended pad layout, which can be found on our website at http://www.diodes.com.

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

200

C



T

t



rr

1000

3.0 pF

4.0 ns

150 mW
833 °C/W

-65 to +150 °C

V

IR = 100A

= 5.0mA

I

F

= 10mA

I

F

V

I

= 100mA

F

= 150mA

I

F

= 80V

V

nA

μA
μA

nA

R

V

= 75V, TJ = +150°C

R

= 25V, TJ = +150°C

V

R

V

= 20V

R

VR = 0.5V, f = 1.0MHz

= IR = 10mA,

I

F

= 0.1 x IR, RL = 100Ω

I

rr

1N4448HWT

(mW)

150

I

ISSI

100

D

50

0

125

025

50 75

T , AMBIENT TEMPERATURE ( C)

A

100

Fig. 1 Power Derating Curve

150

°

100

T = 150°C

A

T = 125°C

A

10

T = 85°C

A

T = 25°C

A

1

T = -55°C

A

F

0.1

I , INSTANTANEOUS FORWARD CURRENT (mA)

0 200 400 600 800 1000 1200 1400 1600

V , INSTANTANEOUS FORWARD VOLTAGE (mV)

F

Fig. 2 Typical Forward Characteristics

1N4448HWT

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R

R

R

C

O

R

Y

T

10.0



T = 100 CA°

1.0

T = 75CA°

0.10

T = 50CA°

R

I , INSTANTANEOUS REVERSE CURRENT ( A)

T = 25CA°

0.01

T = -30CA°

0.001
0

V , INSTANTANEOUS REVERSE VOLTAGE (V)

R

20

Fig. 3 Typical Reverse Characteristics

40 60 80

T = 0CA°

2.5

2.0

IME (nS)

1.5

VE

E

1.0

SE

EVE

0.5

rr

t,

0

0468210

Fig. 4 Reverse Recovery Time vs. Forward Current

Package Outline Dimensions

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.

H

C

A

B

L

M

K

Suggested Pad Layout

Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.

Y

X1

X

G

Dimensions Value (in mm)

I , FORWARD CURRENT (mA)

F

SOD523

Dim Min Max

A 0.25 0.35
B 0.70 0.90
C 1.50 1.70
H 1.10 1.30
K 0.55 0.65
L 0.10 0.30
M 0.10 0.12

All Dimensions in mm

G 0.80
X 0.60

X1 2.00

Y 0.70

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1N4448HWT

Document number: DS30395 Rev. 10 - 2

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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 products for any unintended or unauthorized 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 patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.

This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.

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 products and any
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.

Copyright © 2013, Diodes Incorporated

www.diodes.com

1N4448HWT

1N4448HWT

Document number: DS30395 Rev. 10 - 2

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