BYG21K, BYG21M
www.vishay.com Vishay General Semiconductor
Revision: 09-Aug-2018 1Document Number: 88961
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Fast Avalanche SMD Rectifier
FEATURES
• Low profile package
• Ideal for automated placement
• Glass passivated pellet chip junction
• Low reverse current
• Soft recovery characteristic
• Fast reverse recovery time
• Meets MSL level 1, per J-STD-020, LF maximum peak
of 260 °C
• AEC-Q101 qualified available
- Automotive ordering code P/NHE3 or P/NHM3
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
TYPICAL APPLICATIONS
For use in fast switching rectification of power supply,
inverters, converters, and freewheeling diodes for
consumer, automotive, and telecommunication.
MECHANICAL DATA
Case: SMA (DO-214AC)
Molding compound meets UL 94 V-0 flammability rating
Base P/N-E3 - RoHS-compliant, commercial grade
Base P/N-M3 - halogen-free, RoHS-compliant, and
commercial grade
Base P/NHE3_X - RoHS-compliant, and AEC-Q101
qualified
Base P/NHM3_X - halogen-free, RoHS-compliant and
AEC-Q101 qualified
(“_X” denotes revision code e.g. A, B,...)
Terminals: matte tin plated leads, solderable per
J-STD-002 and JESD 22-B102
E3, M3, HE3, and HM3 suffix meet JESD 201 class 2
whisker test
Polarity: color band denotes the cathode end
PRIMARY CHARACTERISTICS
IF(AV) 1.5 A
VRRM 800 V, 1000 V
IFSM 30 A
IR1.0 μA
VF1.6 V
trr 120 ns
ER20 mJ
TJ max. 150 °C
Package SMA (DO-214AC)
Circuit configuration Single
SMA (DO-214AC)
MAXIMUM RATINGS (TA = 25 °C unless otherwise noted)
PARAMETER SYMBOL BYG21K BYG21M UNIT
Device marking code BYG21K BYG21M
Maximum repetitive peak reverse voltage VRRM 800 1000 V
Average forward current IF(AV) 1.5 A
Peak forward surge current 10 ms single half sine-wave
superimposed on rated load IFSM 30 A
Pulse energy in avalanche mode, non repetitive
(inductive load switch off) I(BR)R = 1 A, TJ = 25 °C ER20 mJ
Operating junction and storage temperature range TJ, TSTG -55 to +150 °C
BYG21K, BYG21M
www.vishay.com Vishay General Semiconductor
Revision: 09-Aug-2018 2Document Number: 88961
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Note
(1) Pulse test: 300 μs pulse width, 1 % duty cycle
Notes
(1) Mounted on epoxy-glass hard tissue
(2) Mounted on epoxy-glass hard tissue, 50 mm2 35 μm Cu
(3) Mounted on Al-oxide-ceramic (Al2O3), 50 mm2 35 μm Cu
Note
(1) AEC-Q101 qualified
RATINGS AND CHARACTERISTICS CURVES (TA = 25 °C unless otherwise noted)
Fig. 1 - Forward Current vs. Forward Voltage Fig. 2 - Max. Average Forward Current vs. Ambient Temperature
ELECTRICAL CHARACTERISTICS (TA = 25 °C unless otherwise noted)
PARAMETER TEST CONDITIONS SYMBOL BYG21K BYG21M UNIT
Maximum instantaneous
forward voltage
IF = 1 A TJ = 25 °C VF (1) 1.5 V
IF = 1.5 A 1.6
Maximum reverse current VR = VRRM
TJ = 25 °C IR
1μA
TJ = 100 °C 10
Maximum reverse recovery
time
IF = 0.5 A, IR = 1.0 A,
Irr = 0.25 A trr 120 ns
THERMAL CHARACTERISTICS (TA = 25 °C unless otherwise noted)
PARAMETER SYMBOL BYG21K BYG21M UNIT
Typical thermal resistance, junction to lead, TL = const. RJL 25 °C/W
Typical thermal resistance, junction to ambient
RJA (1) 150
°C/WRJA (2) 125
RJA (3) 100
ORDERING INFORMATION (Example)
PREFERRED P/N UNIT WEIGHT (g) PREFERRED PACKAGE CODE BASE QUANTITY DELIVERY MODE
BYG21K-E3/TR 0.064 TR 1800 7" diameter plastic tape and reel
BYG21K-E3/TR3 0.064 TR3 7500 13" diameter plastic tape and reel
BYG21KHE3_A/H (1) 0.064 H 1800 7" diameter plastic tape and reel
BYG21KHE3_A/I (1) 0.064 I 7500 13" diameter plastic tape and reel
BYG21K-M3/TR 0.064 TR 1800 7" diameter plastic tape and reel
BYG21K-M3/TR3 0.064 TR3 7500 13" diameter plastic tape and reel
BYG21KHM3_A/H (1) 0.064 H 1800 7" diameter plastic tape and reel
BYG21KHM3_A/I (1) 0.064 I 7500 13" diameter plastic tape and reel
0.001
0.01
0.1
1
10
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Forward Voltage (V)
Forward Current (A)
TJ = 150 °C
TJ = 25 °C
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Ambient Temperature (°C)
Average Forward Current (A)
1007550250 125 150
VR = VRRM
Half Sine-Wave
RθJA = 25 K/W
RθJA = 125 K/W
RθJA = 150 K/W
BYG21K, BYG21M
www.vishay.com Vishay General Semiconductor
Revision: 09-Aug-2018 3Document Number: 88961
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Fig. 3 - Reverse Current vs. Junction Temperature
Fig. 4 - Max. Reverse Power Dissipation vs. Junction Temperature
Fig. 5 - Diode Capacitance vs. Reverse Voltage
Fig. 6 - Max. Reverse Recovery Charge vs. Forward Current
Fig. 7 - Thermal Response
1
10
100
25 50 75 100 125 150
Reverse Current (µA)
Junction Temperature (°C)
VR = VRRM
0
20
40
60
80
100
120
25 50 75 100 125 150
Reverse Power Dissipation (mW)
Junction Temperature (°C)
V
R
= V
RRM
P
R
- Limit
at 100 % V
R
P
R
- Limit
at 80 % V
R
0
5
10
15
20
25
0.1 1 10 100
f = 1 MHz
Reverse Voltage (V)
Diode Capacitance (pF)
T
A
= 125 °C
0
50
100
150
200
0 0.2 0.4 0.6 0.8 1.0
Reverse Recovery Charge (nC)
Forward Current (A)
T
A
= 100 °C
T
A
= 25 °C
T
A
= 75 °C
T
A
= 50 °C
I
R
= 0.5 A, i
R
= 0.125 A
1
10
100
1000
Thermal Resistance for Pulse Cond. (K/W)
Pulse Length (s)
10
-5
10
-4
10
-3
10
-2
10
-1
10
0
10
1
10
2
Single Pulse
125 K/W DC
t
p
/T = 0.5
t
p
/T = 0.2
t
p
/T = 0.1
t
p
/T = 0.05
t
p
/T = 0.02
t
p
/T = 0.01
BYG21K, BYG21M
www.vishay.com Vishay General Semiconductor
Revision: 09-Aug-2018 4Document Number: 88961
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
PACKAGE OUTLINE DIMENSIONS in inches (millimeters)
0.008 (0.203)
0.194 (4.93)
0.208 (5.28)
0.157 (3.99)
0.177 (4.50)
0.100 (2.54)
0.110 (2.79)
0.078 (1.98)
0.090 (2.29)
0.006 (0.152)
0.012 (0.305)
0.049 (1.25)
0.065 (1.65)
Cathode Band
0 (0)
SMA (DO-214AC)
Mounting Pad Layout
0.074 (1.88)
MAX.
0.208 (5.28)
REF.
0.066 (1.68)
MIN.
0.060 (1.52)
MIN.
0.030 (0.76)
0.060 (1.52)
Legal Disclaimer Notice
www.vishay.com Vishay
Revision: 08-Feb-17 1Document Number: 91000
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of
typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding
statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a
particular product with the properties described in the product specification is suitable for use in a particular application.
Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over
time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk.
Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for
such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document
or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.
© 2017 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED
