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
Document Number: 86047
Rev. 1.7, 04-Aug-10
PARTS TABLE
PART
BYW178
ABSOLUTE MAXIMUM RATINGS (T
PARAMETER
Reverse voltage = repetitive peak reverse
voltage
Peak forward surge current
Repetitive peak forward current
Average forward current
Junction and storage temperature range
Non repetitive reverse
MAXIMUM THERMAL RESISTANCE (T
PARAMETER
Junction lead
Junction ambient
ELECTRICAL CHARACTERISTICS (T
PARAMETER
Forward voltage
Reverse current
Reverse recovery current
Reverse recovery time
Reverse recovery time (JEDEC)
Ultra Fast Avalanche Sinterglass Diode
DiodesAmericas@vishay.com, DiodesAsia@vishay.com,
For technical questions within your region, please contact one of the following:
I
F
= 1 A, dI
Lead length l = 10 mm, T
On PC board with spacing 37.5 mm
I
F
V
I
= 0.5 A, l
F
Batt
V
= 1 A, dI
See electrical characteristics
R
TEST CONDITION
t
F
949588
= 200 V, i
p
TEST CONDITION
= V
/dt ≤ - 50 A/μs, V
= 10 ms, half sine wave
amb
TEST CONDITION
TYPE DIFFERENTIATION
V
RRM
amb
R
I
R
V
F
I
F
= 1 A, i
(BR)R
= V
R
amb
/dt ≤ - 50 A/μs,
= 3 A
= 25 °C, unless otherwise specified)
, T
= 800 V; I
= 25 °C, unless otherwise specified)
R
RRM
j
= 0.25 x l
= 100 °C
= 0.4 A
= 25 °C, unless otherwise specified)
R
= 0.25 A
L
Batt
= constant
FAV
RM
= 200 V
= 3 A
FEATURES
• Glass passivated junction
• Hermetically sealed package
• Low reverse current
• Soft recovery characteristics
• Very fast reverse recovery time
• Low reverse recovery peak current
• Compliant to RoHS directive 2002/95/EC and in
• Halogen-free according to IEC 61249-2-21 definition
APPLICATIONS
• Ultra fast rectification diode for switching mode power
accordance to WEEE 2002/96/EC
supplies
SYMBOL
BYW178
PART
l
V
RM
SYMBOL
I
I
t
t
R
R
rr
rr
F
DiodesEurope@vishay.com
R
R
thJA
thJL
MIN.
V
-
-
-
-
-
-
SYMBOL
T
R
j
= V
I
I
I
= T
FSM
FRM
Vishay Semiconductors
FAV
E
R
RRM
stg
VALUE
TYP.
2.2
25
70
50
-
-
-
-
PACKAGE
- 55 to + 175
SOD-64
VALUE
800
80
15
20
3
MAX.
1.9
20
60
1
-
-
BYW178
www.vishay.com
UNIT
K/W
K/W
UNIT
mJ
°C
UNIT
V
A
A
A
μA
μA
ns
ns
V
A
1