Philips Semiconductors
Product specification
Rectifier diodes
general purpose
FEATURES
• Low forward volt drop
• High thermal cycling performance
• Low thermal resistance
BY249 series
SYMBOL
QUICK REFERENCE DATA
V
R
= 300 V / 600 V / 800 V
V
F
≤
1.05 V
I
F(AV)
= 7 A
I
FSM
≤
60 A
k
1
a
2
GENERAL DESCRIPTION
Glass-passivated double diffused
rectifier diodes. The devices are
intended for low frequency power
rectifier applications.
The BY249 series is supplied in the
conventional
leaded
SOD59
(TO220AC) package.
PINNING
PIN
1
2
tab
DESCRIPTION
cathode
anode
cathode
SOD59 (TO220AC)
tab
1
2
LIMITING VALUES
Limiting values in accordance with the Absolute Maximum System (IEC 134).
SYMBOL PARAMETER
V
RSM
V
RRM
V
RWM
V
R
I
F(AV)
I
F(RMS)
I
FRM
I
FSM
Peak non-repetitive reverse
voltage
Peak repetitive reverse
voltage
Crest working reverse voltage
Continuous reverse voltage
Average forward current
1
RMS forward current
Peak repetitive forward
current
Peak non-repetitive forward
current.
I
2
t for fusing
Storage temperature
Operating junction
temperature
sinusoidal; a = 1.57; T
mb
≤
131 ˚C
sinusoidal; a = 1.57;
t = 10 ms
t = 8.3 ms
sinusoidal; T
j
= 150 ˚C prior to
surge; with reapplied V
RWM(max)
t = 10 ms
CONDITIONS
BY249
-
-
-
-
-
-
-
-
-
-
-40
-
MIN.
MAX.UNIT
-300
300
300
200
200
-600
600
600
500
500
7
11
60
60
66
18
150
150
-800
800
800
700
700
UNIT
V
V
V
V
A
A
A
A
A
A
2
s
˚C
˚C
I
2
t
T
stg
T
j
1
Neglecting switching and reverse current losses.
September 1998
1
Rev 1.300
Philips Semiconductors
Product specification
Rectifier diodes
general purpose
THERMAL RESISTANCES
SYMBOL
R
th j-mb
R
th j-a
PARAMETER
Thermal resistance junction to
mounting base
Thermal resistance junction to
ambient
CONDITIONS
MIN.
-
in free air.
-
BY249 series
TYP.
-
60
MAX.
2.0
-
UNIT
K/W
K/W
STATIC CHARACTERISTICS
T
j
= 25 ˚C unless otherwise stated
SYMBOL
V
F
I
R
PARAMETER
Forward voltage
Reverse current
CONDITIONS
I
F
= 20 A
I
F
= 5 A; T
j
= 100 ˚C
V
R
= V
RWM
; T
j
= 125 ˚C
MIN.
-
-
-
TYP.
1.2
0.9
0.1
MAX.
1.6
1.05
0.4
UNIT
V
V
mA
September 1998
2
Rev 1.300
Philips Semiconductors
Product specification
Rectifier diodes
general purpose
BY249 series
15
PF / W
Vo = 1.0120 V
Rs = 0.0200 Ohms
BY249
Tmb(max) / C
120
D = 1.0
80
70
IFS(RMS) / A
BY229
IFSM
10
0.2
0.1
5
0.5
60
130
50
40
t
p
t
p
T
t
I
D=
140
30
20
10
T
0
0
2
4
6
IF(AV) / A
8
10
150
12
0
1ms
10ms
0.1s
tp / s
1s
10s
Fig.1. Maximum forward dissipation P
F
= f(I
F(AV)
);
square wave where I
F(AV)
=I
F(RMS)
x
√
D.
Fig.3. Maximum non-repetitive rms forward current.
I
F
= f(t
p
); sinusoidal current waveform; T
j
= 150˚C prior
to surge with reapplied V
RWM
.
BY249
typ
max
15
PF / W
Vo = 1.012 V
Rs = 0.02 Ohms
BY249
Tmb(max) / C
120
30
IF / A
Tj = 100 C
Tj = 25 C
10
1.9
2.2
2.8
4
5
a = 1.57
130
20
140
10
0
0
2
4
IF(AV) / A
6
150
8
0
0
0.5
1
VF / V
1.5
2
Fig.2. Maximum forward dissipation P
F
= f(I
F(AV)
);
sinusoidal current waveform where a = form
factor = I
F(RMS)
/ I
F(AV)
.
Fig.4. Typical and maximum forward characteristic
I
F
= f(V
F
); parameter T
j
10
Transient thermal impedance, Zth j-mb (K/W)
1
0.1
0.01
P
D
t
p
D=
t
p
T
t
0.001
1us
T
10us
100us 1ms
10ms 100ms
1s
pulse width, tp (s)
BY229
10s
Fig.5. Transient thermal impedance Z
th
= f(t
p
)
September 1998
3
Rev 1.300
Philips Semiconductors
Product specification
Rectifier diodes
general purpose
MECHANICAL DATA
Dimensions in mm
Net Mass: 2 g
BY249 series
4,5
max
10,3
max
1,3
3,7
2,8
5,9
min
3,0 max
not tinned
3,0
15,8
max
13,5
min
1,3
max
1
(2x)
2
0,9 max (2x)
0,6
2,4
5,08
Fig.6. SOD59 (TO220AC). pin 1 connected to mounting base.
Notes
1. Refer to mounting instructions for TO220 envelopes.
2. Epoxy meets UL94 V0 at 1/8".
September 1998
4
Rev 1.300
Philips Semiconductors
Product specification
Rectifier diodes
general purpose
DEFINITIONS
Data sheet status
Objective specification
Product specification
Limiting values
BY249 series
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.
September 1998
5
Rev 1.300
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