BY203-12S, BY203-16S, BY203-20S
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Vishay Semiconductors
Fast Avalanche Sinterglass Diode
FEATURES
• Glass passivated junction
• Hermetically sealed package
• Material categorization:
for definitions of compliance please see
www.vishay.com/doc?99912
APPLICATIONS
949539
DESIGN SUPPORT TOOLS
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Models
Available
MECHANICAL DATA
Case: SOD-57 sintered glass case
Terminals: plated axial leads, solderable per MIL-STD-750,
method 2026
Polarity: color band denotes cathode end
Mounting position: any
Weight: approx. 369 mg
• Fast rectification and switching avalanche sinterglass
diode for TV-line output circuits an switch mode power
supply
ORDERING INFORMATION (Example)
DEVICE NAME
ORDERING CODE
TAPED UNITS
BY203-20S
BY203-20STR
5000 per 10" tape and reel
MINIMUM ORDER QUANTITY
25 000
BY203-20S
BY203-20STAP
5000 per ammopack
25 000
TYPE DIFFERENTIATION
PACKAGE
BY203-12S
VR = 1200 V; IF(AV) = 250 mA
SOD-57
BY203-16S
VR = 1600 V; IF(AV) = 250 mA
SOD-57
BY203-20S
VR = 2000 V; IF(AV) = 250 mA
SOD-57
PARTS TABLE
PART
ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified)
PARAMETER
PART
SYMBOL
VALUE
UNIT
BY203-12S
VR = VRRM
1200
V
BY203-16S
VR = VRRM
1600
V
BY203-20S
VR = VRRM
2000
V
IFSM
20
A
IF(AV)
0.25
A
ER
10
mJ
Junction temperature range
Tj
-55 to +150
°C
Storage temperature range
Tstg
-55 to +175
°C
Reverse voltage = repetitive peak reverse
voltage
Peak forward surge current
TEST CONDITION
lR = 100 μA
tp = 10 ms, half sine wave
Average forward current
Non repetitive reverse avalanche energy
I(BR)R = 0.4 A
Rev. 1.9, 20-Feb-18
Document Number: 86002
1
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
BY203-12S, BY203-16S, BY203-20S
www.vishay.com
Vishay Semiconductors
MAXIMUM THERMAL RESISTANCE (Tamb = 25 °C, unless otherwise specified)
PARAMETER
Junction ambient
TEST CONDITION
SYMBOL
VALUE
Lead length l = 10 mm, TL = constant
RthJA
45
UNIT
K/W
Maximum lead length
RthJA
100
K/W
ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER
TEST CONDITION
PART
SYMBOL
MIN.
TYP.
MAX.
VF
-
-
2.4
V
IF = 0.2 A, tp/T = 0.01, tp = 0.3ms
Forward voltage
Reverse current
Breakdown voltage
VR = 700 V
BY203-12S
IR
-
-
2
μA
VR = 1000 V
BY203-16S
IR
-
-
2
μA
VR = 1200 V
BY203-20S
IR
-
-
2
μA
BY203-12S
V(BR)
1200
-
-
V
BY203-16S
V(BR)
1600
-
-
V
BY203-20S
V(BR)
2000
-
-
V
trr
-
-
300
ns
lR = 100 μA, tp/T = 0.01, tp = 0.3 ms
IF = 0.5 A, IR = 1 A, iR = 0.25 A
Reverse recovery time
UNIT
TYPICAL CHARACTERISTICS (Tamb = 25 C, unless otherwise specified)
0.30
200
160
120
VRRM
VR
BY203/12
80
40
BY203/16
BY203/20
IFAV - Average Forward Current (A)
Tj - Junction Temperature (°C)
240
RthJA = 45 K/W
I = 10 mm
0.25
0.20
0.10
VR = VRRM
half sinewave
0.05
0
0
0
949080
RthJA = 100 K/W
PCB: d = 25 mm
0.15
400
800
1200
1600
VR, VRRM - Rev./Rep. Peak Rev. Voltage (V)
0
30
60
90
120
150
Tamb - Ambient Temperature (°C)
16398
Fig. 3 - Max. Average Forward Current vs.
Ambient Temperature
Fig. 1 - Junction Temperature vs.
Reverse/Repetitive Peak Reverse Voltage
10
1000
IR - Reverse Current (μA)
IF - Forward Current (A)
VR = VRRM
1
Tj = 175 °C
0.1
Tj = 25 °C
0.01
100
10
1
25
0.001
0
16397
1
2
3
4
5.0
VF - Forward Voltage (V)
Fig. 2 - Max. Forward Current vs. Forward Voltage
16399
50
75
100
125
150
Tj - Junction Temperature (°C)
Fig. 4 - Max. Reverse Current vs. Junction Temperature
Rev. 1.9, 20-Feb-18
Document Number: 86002
2
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
BY203-12S, BY203-16S, BY203-20S
Vishay Semiconductors
18
500
VR = VRRM
CD - Diode Capacitance (pF)
PR - Reverse Power Dissipation (mW)
www.vishay.com
400
PR-Limit
at 100 % VR
300
PR-Limit
at 80 % VR
200
100
14
12
10
8
6
4
2
0
0.1
0
25
50
75
100
125
150
Tj - Junction Temperature (°C)
16400
16401
Fig. 5 - Max. Reverse Power Dissipation vs. Junction Temperature
f = 1 MHz
16
1
10
100
VR - Reverse Voltage (V)
Fig. 6 - Diode Capacitance vs. Reverse Voltage
3.6 (0.142) max.
0.82 (0.032) max.
PACKAGE DIMENSIONS in millimeters (inches): SOD-57
26 (1.024) min.
4 (0.157) max.
26 (1.024) min.
20543
Rev. 1.9, 20-Feb-18
Document Number: 86002
3
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
Outline Dimensions
www.vishay.com
Vishay Semiconductors
SOD-57
BYT62-BY203
3.4 max. [0.134]
0.82 max. [0.032]
PACKAGE DIMENSIONS in millimeters (inches)
26 min. [1.024]
4.2 max. [0.165]
26 min. [1.024]
23194
Rev. 3 - Date: 09.February.2005
Document no.:6.563-5006.5-4
Rev. 1.2, 25-Apr-2022
Document Number: 84045
1
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
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Revision: 01-Jan-2022
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Document Number: 91000