BAS28
Document number: DS37988 Rev. 2 - 2
1 of 5
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May 2016
© Diodes Incorporated
BAS28
DUAL SURFACE MOUNT FAST SWITCHING DIODE
Features
Fast Switching Speed
For General Purpose Switching Applications
Two Electrically Isolated Elements in a Single Compact Package
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Qualified to AEC-Q101 Standards for High Reliability
Mechanical Data
Case: SOT143
Case Material: Molded Plastic, “Green” Molding Compound.
UL Flammability Classification Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020
Terminals: Finish – Matte Tin Annealed over Alloy 42 Leadframe.
Solderable per MIL-STD-202, Method 208
Polarity: See Diagram Below
Weight: 0.009 grams (Approximate)
Ordering Information (Note 4)
Part Number
Case
Packaging
BAS28-7
SOT143
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
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
Code
C
D
E
F
G
H
I
J
K
L
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
Device Schematic
KT7 = Product Type Marking Code
YM = Date Code Marking
Y = Year (ex: C = 2015)
M = Month (ex: 9 = September)
SOT143
SOT143
BAS28
Document number: DS37988 Rev. 2 - 2
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www.diodes.com
May 2016
© Diodes Incorporated
BAS28
Maximum Ratings (@TA = +25°C unless otherwise specified.)
Characteristic
Symbol
Value
Unit
Repetitive Peak Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
VR
85
V
RMS Reverse Voltage
VR(RMS)
60
V
Forward Current (Note 5)
IF
215
mA
Non-Repetitive Peak Forward Surge Current @ t = 1.0µs
@ t = 1.0ms
@ t = 1s
IFSM
4.0
1.0
0.5
A
Repetitive Peak Forward Current (Note 5)
IFRM
500
mA
Thermal Characteristics
Characteristic
Symbol
Value
Unit
Power Dissipation (Note 5)
PD
250
mW
Thermal Resistance Junction to Ambient Air (Note 5)
RθJA
500
°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(BR)R
85
V
IR = 100µA
Forward Voltage
VF
0.715
0.855
1.0
1.25
V
IF = 1.0mA
IF = 10mA
IF = 50mA
IF = 150mA
Reverse Current (Note 6)
IR

1.0
50
30
30
µA
µA
µA
nA
VR = 75V
VR = 75V, TJ = +150°C
VR = 25V, TJ = +150°C
VR = 25V
Total Capacitance
CT
1.5
pF
VR = 0, f = 1.0MHz
Reverse Recovery Time
tRR
4
ns
IF = IR = 10mA,
IRR = 0.1 x IR, RL = 100Ω
Notes: 5. Part mounted on FR-4 board with recommended pad layout, which can be found on our website at http://www.diodes.com/package-outlines.html.
6. Short duration pulse test used to minimize self-heating effect.
BAS28
Document number: DS37988 Rev. 2 - 2
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May 2016
© Diodes Incorporated
BAS28
0
100
025 50 75 125100 150
P , POWER DISSIPATION (mW)
D
T , AMBIENT TEMPERATURE ( C)
A
Figure 1 Power Derating Curve, Total Package
300
200
Note 5
250
150
50
1
10
100
1000
0200 400 600 800 1000 1200 1400
T = 25°C
A
T = 75°C
A
T = 0°C
A
T = 150°C
A
T = -40°C
A
I , INSTANTANEOUS FORWARD CURRENT (mA)
F
Figure 2 Typical Forward Characteristics, Per Element
V , INSTANTANEOUS FORWARD VOLTAGE (mV)
F
0.1
1
10
100
1000
10000
100000
010 20 30 40 50 60 70 80 90 100
I , INSTANTANEOUS REVERSE CURRENT (nA)
R
Figure 3 Typical Reverse Characteristics, Per Element
V , INSTANTANEOUS REVERSE VOLTAGE (V)
R
T = 25°C
A
T = 75°C
A
T = 0°C
A
T = 150°C
A
T = -40°C
A
T = 125°C
A
0.4
0.45
0.5
0.55
0.6
0.65
0.7
0 5 10 15 20 25 30 35 40
f=1MHz
C , TOTAL CAPACITANCE (pF)
T
V , DC REVERSE VOLTAGE (V)
R
Figure 4 Total Capacitance vs. Reverse Voltage, Per Element
BAS28
Document number: DS37988 Rev. 2 - 2
4 of 5
www.diodes.com
May 2016
© Diodes Incorporated
BAS28
Package Outline Dimensions
Please see http://www.diodes.com/package-outlines.html for the latest version.
SOT143
M
L
K
J
H
D
A2
C
A1
G
B
F
a
0.25
SEATING PLANE
GAUGE PLANE
Suggested Pad Layout
Please see http://www.diodes.com/package-outlines.html for the latest version.
SOT143
SOT143
Dim
Min
Max
Typ
A1
0.37
0.51
0.400
A2
0.77
0.93
0.800
B
1.20
1.40
1.30
C
2.28
2.48
2.38
D
1.58
1.83
1.72
F
0.45
0.60
0.49
G
1.78
2.03
1.92
H
2.80
3.00
2.90
J
0.013
0.10
0.05
K
0.89
1.00
–
L
0.46
0.60
0.50
M
0.085
0.18
0.11
a
0°
8°
–
All Dimensions in mm
Dimensions
Value (in mm)
Z
2.70
G
1.30
X
2.50
X1
1.00
X2
0.60
Y
0.70
C
2.00
X1 X2
G
Z
Y
C
X
X2
BAS28
Document number: DS37988 Rev. 2 - 2
5 of 5
www.diodes.com
May 2016
© Diodes Incorporated
BAS28
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).
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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.
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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 © 2016, Diodes Incorporated
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