BYT77, BYT78
www.vishay.com
Vishay Semiconductors
Fast Avalanche Sinterglass Diode
FEATURES
• Glass passivated junction
• Hermetically sealed package
• Low reverse current
• Soft recovery characteristics
• Controlled avalanche characteristics
• Material categorization:
For definitions of compliance please see
www.vishay.com/doc?99912
949588
APPLICATIONS
MECHANICAL DATA
Case:
SOD-64
Terminals:
plated axial leads, solderable per MIL-STD-750,
method 2026
Polarity:
color band denotes cathode end
Mounting position:
any
Weight:
approx. 858 mg
• Fast “soft recovery” rectification diode
ORDERING INFORMATION
(Example)
DEVICE NAME
BYT78
BYT78
ORDERING CODE
BYT78-TR
BYT78-TAP
TAPED UNITS
2500 per 10" tape and reel
2500 per ammopack
MINIMUM ORDER QUANTITY
12 500
12 500
PARTS TABLE
PART
BYT77
BYT78
TYPE DIFFERENTIATION
V
R
= 800 V; I
F(AV)
= 3 A
V
R
= 1000 V; I
F(AV)
= 3 A
PACKAGE
SOD-64
SOD-64
ABSOLUTE MAXIMUM RATINGS
(T
amb
= 25 °C, unless otherwise specified)
PARAMETER
Reverse voltage = repetitive peak reverse
voltage
Peak forward surge current
Average forward current
Non repetitive reverse avalanche energy
Junction and storage temperature range
TEST CONDITION
See electrical characteristics
t
p
= 10 ms, half sine wave
T
amb
45
°C
I
(BR)R
= 0.4 A
PART
BYT77
BYT78
SYMBOL
V
R
= V
RRM
V
R
= V
RRM
I
FSM
I
F(AV)
E
R
T
j
= T
stg
VALUE
800
1000
100
3
10
- 55 to + 175
UNIT
V
V
A
A
mJ
°C
MAXIMUM THERMAL RESISTANCE
(T
amb
= 25 °C, unless otherwise specified)
PARAMETER
Junction ambient
TEST CONDITION
Lead length l = 10 mm, T
L
= constant
On PC board with spacing 25 mm
SYMBOL
R
thJA
R
thJA
VALUE
25
70
UNIT
K/W
K/W
Rev. 1.9, 04-Sep-12
Document Number: 86034
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
BYT77, BYT78
www.vishay.com
Vishay Semiconductors
ELECTRICAL CHARACTERISTICS
(T
amb
= 25 °C, unless otherwise specified)
PARAMETER
Forward voltage
Reverse current
Reverse recovery time
TEST CONDITION
I
F
= 3 A
V
R
= V
RRM
V
R
= V
RRM
, T
j
= 150 °C
I
F
= 0.5 A, I
R
= 1 A, i
R
= 0.25 A
PART
SYMBOL
V
F
I
R
I
R
t
rr
MIN.
-
-
-
-
TYP.
1
1
60
-
MAX.
1.2
5
150
250
UNIT
V
μA
μA
ns
TYPICAL CHARACTERISTICS
(T
amb
= 25
C,
unless otherwise specified)
R
thJA
- Ther. Resist. Junction/Ambient (K/W)
40
100
I
F
- Forward Current (A)
10
T
j
= 175 °C
1
T
j
= 25 °C
30
20
l
l
0.1
10
T
L
= constant
0
0
949466
0.01
0.001
5
10
15
20
25
30
16370
0
0.5
1.0
1.5
2.0
2.5
l - Lead Length (mm)
V
F
- Forward Voltage (V)
Fig. 1 - Max. Thermal Resistance vs. Lead Length
Fig. 3 - Forward Current vs. Forward Voltage
240
3.5
I
FAV
- Average Forward Current (A)
T
j
- Junction Temperature (°C)
200
160
120
80
V
RRM
V
R
3.0
2.5
2.0
1.5
1.0
0.5
0
R
thJA
= 70 K/W
PCB: d = 25 mm
V
R
= V
RRM
half
sinewave
R
thJA
= 25 K/W
I = 10 mm
R
thJA
= 70 K/W
40
0
0
200
400
600
800
1000
0
16371
20
40
60
80 100 120 140 160 180
949467
V
R
, V
RRM
- Rev./Rep. Peak Rev. Voltage (V)
T
amb
- Ambient Temperature (°C)
Fig. 2 - Junction Temperature vs.
Reverse/Repetitive Peak Reverse Voltage
Fig. 4 - Max. Average Forward Current vs. Ambient Temperature
Rev. 1.9, 04-Sep-12
Document Number: 86034
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
BYT77, BYT78
www.vishay.com
Vishay Semiconductors
V
R
= V
RRM
P
R
- Reverse Power Dissipation (mW)
1000
450
400
350
300
250
200
150
100
50
0
25
50
75
100
125
150
175
P
R
-Limit
at 80 % V
R
P
R
-Limit
at 100 % V
R
V
R
= V
RRM
I
R
- Reverse Current (μA)
100
10
1
25
16372
50
75
100
125
150
175
16373
T
j
- Junction Temperature (°C)
T
j
- Junction Temperature (°C)
Fig. 5 - Reverse Current vs. Junction Temperature
Fig. 6 - Max Reverse Power Dissipation vs. Junction Temperature
90
C
D
- Diode Capacitance (pF)
80
70
60
50
40
30
20
10
0
0.1
1
10
f = 1 MHz
100
16374
V
R
- Reverse Voltage (V)
Fig. 7 - Diode Capacitance vs. Reverse Voltage
PACKAGE DIMENSIONS
in millimeters (inches):
SOD-64
Sintered Glass Case
SOD-64
Cathode Identification
4.3 (0.168) max.
1.35 (0.053) max.
26(1.014) min.
4 (0.156) max.
26 (1.014) min.
Document-No.: 6.563-5006.4-4
Rev. 3 - Date: 09.February.2005
94 9587
Rev. 1.9, 04-Sep-12
Document Number: 86034
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
Legal Disclaimer Notice
www.vishay.com
Vishay
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
Revision: 08-Feb-17
1
Document Number: 91000
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