Diodes 1N4148WSF User Manual

SURFACE MOUNT FAST SWITCHING DIODE

Features

 Fast Switching Speed
 Low Forward Voltage: Maximum of 0.715V at 1mA
 Fast Reverse Recovery: Maximum of 4ns
 Low Capacitance: Maximum of 1.5pF
 Low Leakage Current: Maximum of 500nA at 80V
 Small Surface Mount Package
 Thermally Efficient Copper Alloy leadframe for High Power

Dissipation

 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
 Halogen and Antimony Free. “Green” Device (Note 3)

Mechanical Data

 Case: SOD323F
 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 Copper Alloy leadframe

(Lead Free Plating). Solderable per MIL-STD-202, Method 208

 Weight: 0.003 grams (approximate)

NEW PRODUCT

SOD323F

Top View

1N4148WSF

Ordering Information (Note 4)

Product Compliance Marking Reel Size (inches) Tape Width (mm) Quantity per Reel

1N4148WSF-7 Standard JP 7 8 3,000/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.

Marking Information

Date Code Key

Year 2013 2014 2015 2016 2017 2018 2019 2020

Code A B C D E F G H

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

JP

YM

1N4148WSF

Document number: DS36010 Rev. 4 - 2

JP = Product Type Marking Code
YM = Date Code Marking
Y = Year (ex: A = 2013)
M = Month (ex: 9 = September)

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September 2013

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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)

Non-Repetitive Peak Forward Surge Current

Thermal Characteristics

NEW PRODUCT

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

Characteristic Symbol Value Unit

@ t = 1.0µs
@ t = 1.0ms
@ t = 1.0s

V

V
V

V

R(RMS)

I

R

, T

T

J

RM

RRM
RWM

V

I

FM

FSM

P

θJA

R

D

STG

1N4148WSF

100 V

100 V

71 V

250 mA

4.0

1.0

A

0.5

400 mW
313 °C/W

-55 to +150 °C

Electrical Characteristics (@T

= +25°C, unless otherwise specified.)

A

Characteristic Symbol Min Max Unit Test Condition

Reverse Breakdown Voltage (Note 6)

Forward Voltage

Leakage Current (Note 6)

Total Capacitance
Reverse Recovery Time

Notes: 5. Device mounted on FR-4 PCB, on minimum recommended, 2oz copper pad layout.

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

1N4148WSF

Document number: DS36010 Rev. 4 - 2

V

(BR)R

V



F

I

R

C



T

t



rr

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100





V

0.715

0.855

1.0

V

1.25

0.5
50
30
30

µA
µA
µA

nA

1.5 pF

4.0 ns

IR = 100µA
I

= 1.0mA

F

= 10mA

I

F

I

= 50mA

F

= 150mA

I

F

= 80V

V

R

V

= 80V, TJ = +150°C

R

= 25V, TJ = +150°C

V

R

V

= 25V

R

VR = 0, f = 1.0MHz

= IR = 10mA,

I

F

I

= 0.1 x IR, RL = 100

rr

September 2013

© Diodes Incorporated

NSTAN

TAN

O

U

O

RWAR

C

URREN

T

TANT

O

US R

R

CUR

RENT

C, TOT

CAPACITAN

C

NEW PRODUCT

1N4148WSF

10000

(mA)

1000

Note 5

100

D

10

T = 150°C

A

1

D

P , POWER DISSIPAT ION (mW)

100,000

R = 357°C/W

JA



T , AMBIENT TEMPERAT URE ( C)

A

Figure 1 Power Derating Curve, Total Package

°

S F
E

F

I, I

T = 125°C

A

0.1

0.01

0.001
0 200 400 600 800 1000 1200

V , INSTANTANEOUS F O RWARD VOLTAGE ( m V)

F

T = 5°CA5

T = 25°C

A

T = 5°CA-5

Figure 2 Typical Forward Characteristics

1.0

(nA)

10,000

0.8

1,000

SE

100

EVE

10

ANE

1

R

I, INS

0.1

0 102030405060708090100

V , INSTANT ANEOUS REVERSE VOLTAGE (V)

R

Figure 3 Typical Re verse Char acteri s t ics

E (pF)

0.6

0.4

AL

T

0.2

0

V , DC REVERSE VOLTAGE (V)

R

Figur e 4 Total Capacitanc e vs. Reve r se Voltage

40020

Package Outline Dimensions

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

D



1

He

E

1N4148WSF

Document number: DS36010 Rev. 4 - 2

b (2x)



1

A



2

c



2

L2 (2x)

Dim Min Max Typ

SOD323F

A 0.60 0.75
b 0.25 0.35
c 0.05 0.26






D 1.15 1.35 1.25
E 1.60 1.80 1.70

He 2.30 2.70 2.50

L1

L1 0.30 0.50 0.40
L2 0.41 0.61 0.51

b (2x)

α1
α2
β1
β2

 
 
 
 

7°
3°
7°
3°

All Dimensions in mm

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1N4148WSF

Suggested Pad Layout

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

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).

NEW PRODUCT

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 unauthorize d 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. Onl y the English version of this document is the
final and determinative format released by Diodes Incorporated.

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

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



Y

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the

X1

X

G

IMPORTANT NOTICE

LIFE SUPPORT

Dimensions Value (in mm)

G 1.280
X 0.710

X1 2.700

Y 0.403

1N4148WSF

Document number: DS36010 Rev. 4 - 2

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