Philips Semiconductors
Preliminary specification
Damper diode
fast, high-voltage
FEATURES
• Low forward volt drop
• Fast switching
• Soft recovery characteristic
• High thermal cycling performance
• Isolated mounting tab
BY459DX-1500, BY459DX-1500S
SYMBOL
QUICK REFERENCE DATA
V
R
= 1500 V
V
F
≤
1.2 V / 1.25 V
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
k
1
a
2
GENERAL DESCRIPTION
Glass-passivated double diffused
rectifier diode featuring fast forward
recovery and low forward recovery
voltage. The device is intended for
use in HDTV receivers and
multi-sync
monitor
horizontal
deflection circuits.
The BY459DX series is supplied in
the conventional leaded SOD117
package.
PINNING
PIN
1
2
tab
DESCRIPTION
cathode
anode
isolated
SOD117
case
1
2
LIMITING VALUES
Limiting values in accordance with the Absolute Maximum System (IEC 134).
SYMBOL PARAMETER
V
RSM
V
RRM
V
RWM
I
F(peak)
I
FRM
I
F(RMS)
I
FSM
Peak non repetitive reverse
voltage
Peak repetitive reverse
voltage
Crest working reverse voltage
Peak working forward current
Peak repetitive forward
current
RMS forward current
Peak non-repetitive forward
current
Storage temperature
Operating junction
temperature
f = 48 kHz;
f = 82 kHz;
t = 100
µs
t = 10 ms
t = 8.3 ms
sinusoidal; T
j
= 150 ˚C prior to
surge; with reapplied V
RWM(max)
CONDITIONS
MIN.
-
-
-
-
-
-
-
-
-
-40
-
MAX.
1500
1500
1300
-1500
12
-
-1500S
-
10
100
30
100
110
150
150
UNIT
V
V
V
A
A
A
A
A
A
˚C
˚C
T
stg
T
j
August 1998
1
Rev 1.100
Philips Semiconductors
Preliminary specification
Damper diode
fast, high-voltage
ISOLATION LIMITING VALUE & CHARACTERISTIC
T
hs
= 25 ˚C unless otherwise specified
SYMBOL
V
isol
PARAMETER
R.M.S. isolation voltage from
both terminals to external
heatsink
CONDITIONS
BY459DX-1500, BY459DX-1500S
MIN.
-
TYP.
MAX.
2500
UNIT
V
f = 50-60 Hz; sinusoidal
waveform;
R.H.
≤
65% ; clean and dustfree
C
isol
Capacitance from both terminals f = 1 MHz
to external heatsink
-
10
-
pF
THERMAL RESISTANCES
SYMBOL
R
th j-hs
R
th j-a
PARAMETER
Thermal resistance junction to
heatsink
Thermal resistance junction to
ambient
CONDITIONS
with heatsink compound
without heatsink compound
in free air.
MIN.
-
-
-
TYP.
-
-
35
MAX.
3.6
4.5
-
UNIT
K/W
K/W
K/W
STATIC CHARACTERISTICS
T
j
= 25 ˚C unless otherwise stated
SYMBOL PARAMETER
V
F
I
R
Forward voltage
Reverse current
CONDITIONS
I
F
= 6.5 A
I
F
= 6.5 A; T
j
= 125 ˚C
V
R
= 1300 V
V
R
= 1300 V; T
j
= 125 ˚C
TYP.
0.95
0.85
-
-
1.05
0.95
250
1
MAX.
1.30
1.20
-
-
1.35
1.25
250
1
UNIT
V
V
µA
mA
BY459DX- 1500 1500S 1500 1500S
DYNAMIC CHARACTERISTICS
T
j
= 25 ˚C unless otherwise stated
SYMBOL PARAMETER
t
rr
Q
s
V
fr
t
fr
Reverse recovery time
Reverse recovery charge
Peak forward recovery voltage
Forward recovery time
CONDITIONS
I
F
= 1 A, V
R
≥
30 V;
I
F
= 2 A, -dI
F
/dt = 20 A/µs
I
F
= 6.5A, dI
F
/dt = 50A/µs
I
F
= 6.5A, dI
F
/dt = 50A/µs
TYP.
BY459DX- 1500 1500S
0.25
2.0
8.0
170
0.17
0.70
11.0
200
MAX.
1500
0.35
3.0
14.0
250
1500S
0.22
0.95
19.0
300
µs
µC
V
ns
UNIT
August 1998
2
Rev 1.100
Philips Semiconductors
Preliminary specification
Damper diode
fast, high-voltage
BY459DX-1500, BY459DX-1500S
I
F
100
Maximum pulse width / us
V
BY459X-1500
VRRM
10%
tfr
VF
V
VF
5V / 2V
time
fr
1
10
pulse
width tp
time
period T
time
10
100
line frequency / kHz
Fig.1. Definition of Vfr and tfr
Fig.4. Maximum allowable pulse width t
p
versus line
frequency; Basic horizontal deflection circuit.
I
dI
F
dt
F
30
IF / A
Tj = 125 C
Tj = 25 C
BY459
trr
time
20
typ
10
max
Qs
25%
100%
I
R
0
0
0.5
1
VF / V
1.5
2
Fig.2. Definition of t
rr
and Q
s
Fig.5. BY459DX-1500 Typical and maximum forward
characteristic I
F
= f(V
F
); parameter T
j
BY459S
VCC
30
IF / A
Tj = 125 C
Tj = 25 C
Line output transformer
LY
20
typ
10
max
Cf
deflection transistor
D1
Cs
0
0
0.5
1
1.5
VF / V
2
Fig.3. Basic horizontal deflection circuit.
Fig.6. BY459DX-1500S Typical and maximum
forward characteristic I
F
= f(V
F
); parameter T
j
August 1998
3
Rev 1.100
Philips Semiconductors
Preliminary specification
Damper diode
fast, high-voltage
MECHANICAL DATA
Dimensions in mm
Net Mass: 5.9 g
BY459DX-1500, BY459DX-1500S
16.0 max
0.7
4.5
10.0
27
max
25.1
25.7
22.5
max
5.1
2.2 max
18.1
min
1.1
0.4 M
2
10.9
3.3
5.8 max
3.0
25
0.9 max
3.3
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".
August 1998
4
Rev 1.100
Philips Semiconductors
Preliminary specification
Damper diode
fast, high-voltage
DEFINITIONS
Data sheet status
Objective specification
Product specification
Limiting values
BY459DX-1500, BY459DX-1500S
This data sheet contains target or goal specifications for product development.
This data sheet contains final product specifications.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
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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