Philips Semiconductors
Preliminary specification
Damper diode
BY459DX-1500, BY459DX-1500S
fast, high-voltage
FEATURES
SYMBOL
QUICK REFERENCE DATA
Low forward volt drop
V
R
= 1500 V
Fast switching
Soft recovery characteristic
V
F
1.2 V / 1.25 V
High thermal cycling performance
Isolated mounting tab
I
F(peak)
= 12 A (f = 48 kHz)
I
F(peak)
= 10 A (f = 82 kHz)
I
FSM
100 A
t
rr
350 ns / 220 ns
GENERAL DESCRIPTION
PINNING
SOD117
Glass-passivated double diffused
PIN
DESCRIPTION
rectifier diode featuring fast forward
recovery and low forward recovery
1
cathode
voltage. The device is intended for
use
in
HDTV
receivers
and
2
anode
multi-sync
monitor
horizontal
deflection circuits.
tab
isolated
The BY459DX series is supplied in
the conventional leaded SOD117
package.
LIMITING VALUES
Limiting values in accordance with the Absolute Maximum System (IEC 134).
SYMBOL PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
V
RSM
Peak non repetitive reverse
-
1500
V
voltage
V
RRM
Peak repetitive reverse
-
1500
V
voltage
V
RWM
Crest working reverse voltage
-
1300
V
-1500
-1500S
I
F(peak)
Peak working forward current
f = 48 kHz;
-
12
-
A
f = 82 kHz;
-
-
10
A
I
FRM
Peak repetitive forward
t = 100
s
-
100
A
current
I
F(RMS)
RMS forward current
-
30
A
I
FSM
Peak non-repetitive forward
t = 10 ms
-
100
A
current
t = 8.3 ms
-
110
A
sinusoidal; T
j
= 150 C prior to
surge; with reapplied V
RWM(max)
T
stg
Storage temperature
-40
150
C
T
j
Operating junction
-
150
C
temperature
k
a
1
2
case
1
2
August 1998
1
Rev 1.100
Philips Semiconductors
Preliminary specification
Damper diode
BY459DX-1500, BY459DX-1500S
fast, high-voltage
ISOLATION LIMITING VALUE & CHARACTERISTIC
T
hs
= 25 C unless otherwise specified
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
isol
R.M.S. isolation voltage from
f = 50-60 Hz; sinusoidal
-
2500
V
both terminals to external
waveform;
heatsink
R.H.
65% ; clean and dustfree
C
isol
Capacitance from both terminals f = 1 MHz
-
10
-
pF
to external heatsink
THERMAL RESISTANCES
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
R
th j-hs
Thermal resistance junction to
with heatsink compound
-
-
3.6
K/W
heatsink
without heatsink compound
-
-
4.5
K/W
R
th j-a
Thermal resistance junction to
in free air.
-
35
-
K/W
ambient
STATIC CHARACTERISTICS
T
j
= 25 C unless otherwise stated
SYMBOL PARAMETER
CONDITIONS
TYP.
MAX.
UNIT
BY459DX- 1500
1500S 1500 1500S
V
F
Forward voltage
I
F
= 6.5 A
0.95
1.05
1.30
1.35
V
I
F
= 6.5 A; T
j
= 125 C
0.85
0.95
1.20
1.25
V
I
R
Reverse current
V
R
= 1300 V
-
250
-
250
A
V
R
= 1300 V; T
j
= 125 C
-
1
-
1
mA
DYNAMIC CHARACTERISTICS
T
j
= 25 C unless otherwise stated
SYMBOL PARAMETER
CONDITIONS
TYP.
MAX.
UNIT
BY459DX- 1500 1500S
1500
1500S
t
rr
Reverse recovery time
I
F
= 1 A, V
R
30 V;
0.25
0.17
0.35
0.22
s
Q
s
Reverse recovery charge
I
F
= 2 A, -dI
F
/dt = 20 A/
s
2.0
0.70
3.0
0.95
C
V
fr
Peak forward recovery voltage
I
F
= 6.5A, dI
F
/dt = 50A/
s
8.0
11.0
14.0
19.0
V
t
fr
Forward recovery time
I
F
= 6.5A, dI
F
/dt = 50A/
s
170
200
250
300
ns
August 1998
2
Rev 1.100
Philips Semiconductors
Preliminary specification
Damper diode
BY459DX-1500, BY459DX-1500S
fast, high-voltage
Fig.1. Definition of Vfr and tfr
Fig.2. Definition of t
rr
and Q
s
Fig.3. Basic horizontal deflection circuit.
Fig.4. Maximum allowable pulse width t
p
versus line
frequency; Basic horizontal deflection circuit.
Fig.5. BY459DX-1500 Typical and maximum forward
characteristic I
F
= f(V
F
); parameter T
j
Fig.6. BY459DX-1500S Typical and maximum
forward characteristic I
F
= f(V
F
); parameter T
j
time
time
V F
V
fr
V F
I
F
10%
5V / 2V
tfr
10
100
1
10
100
BY459X-1500
line frequency / kHz
Maximum pulse width / us
V
time
VRRM
width tp
period T
pulse
100%
time
dI
dt
F
I
R
I
F
trr
25%
Qs
0
1
2
BY459
VF / V
IF / A
30
20
10
0
0.5
1.5
max
typ
Tj = 125 C
Tj = 25 C
Line output transformer
VCC
D1
LY
Cs
Cf
deflection transistor
0
0.5
1
1.5
2
0
10
20
30
VF / V
IF / A
Tj = 125 C
Tj = 25 C
max
typ
BY459S
August 1998
3
Rev 1.100
Philips Semiconductors
Preliminary specification
Damper diode
BY459DX-1500, BY459DX-1500S
fast, high-voltage
MECHANICAL DATA
Dimensions in mm
Net Mass: 5.9 g
Fig.7. SOD117; The seating plane is electrically isolated from all terminals.
Notes
1. Refer to mounting instructions for F-pack envelopes.
2. Epoxy meets UL94 V0 at 1/8".
4.5
16.0 max
0.7
10.0
5.1
27
max
18.1
min
2.2 max
1.1
0.4 M
10.9
25
25.1
3.0
25.7
5.8 max
3.3
0.9 max
2
3.3
22.5
max
August 1998
4
Rev 1.100
Philips Semiconductors
Preliminary specification
Damper diode
BY459DX-1500, BY459DX-1500S
fast, high-voltage
DEFINITIONS
Data sheet status
Objective specification
This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification
This data sheet contains final product specifications.
Limiting values
Limiting values are given in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one
or more of the limiting values may cause permanent damage to the device. These are stress ratings only and
operation of the device at these or at any other conditions above those given in the Characteristics sections of
this specification is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
Philips Electronics N.V. 1998
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the
copyright owner.
The information presented in this document does not form part of any quotation or contract, it is believed to be
accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any
consequence of its use. Publication thereof does not convey nor imply any license under patent or other
industrial or intellectual property rights.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices or systems where malfunction of these
products can be reasonably expected to result in personal injury. Philips customers using or selling these products
for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting
from such improper use or sale.
August 1998
5
Rev 1.100
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