Philips Semiconductors
Product specification
Rectifier diodes
BYQ40EW series
ultrafast, rugged
FEATURES
SYMBOL
QUICK REFERENCE DATA
Low forward volt drop
V
R
= 150 V/ 200 V
Fast switching
Soft recovery characteristic
V
F
0.85 V
Reverse surge capability
High thermal cycling performance
I
O(AV)
= 40 A
Low thermal resistance
I
RRM
0.2 A
t
rr
30 ns
GENERAL DESCRIPTION
PINNING
SOT429 (TO247)
Dual, common cathode, ultra-fast,
PIN
DESCRIPTION
epitaxial rectifier diodes intended
for use as output rectifiers in high
1
anode 1
frequency switched mode power
supplies.
2
cathode
The BYQ40EW series is supplied in
3
anode 2
the conventional leaded SOT429
(TO247) package.
tab
cathode
LIMITING VALUES
Limiting values in accordance with the Absolute Maximum System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
BYQ40EW
-150
-200
V
RRM
Peak repetitive reverse voltage
-
150
200
V
V
RWM
Crest working reverse voltage
-
150
200
V
V
R
Continuous reverse voltage
-
150
200
V
I
O(AV)
Average rectified output current square wave
-
40
A
(both diodes conducting)
= 0.5; T
mb
110 C
I
FRM
Repetitive peak forward current t = 25
s;
= 0.5;
-
40
A
per diode
T
mb
110 C
I
FSM
Non-repetitive peak forward
t = 10 ms
-
300
A
current per diode
t = 8.3 ms
-
325
A
sinusoidal; with reapplied
V
RWM(max)
I
RRM
Repetitive peak reverse current t
p
= 2
s;
= 0.001
-
0.2
A
per diode
I
RSM
Non-repetitive peak reverse
t
p
= 100
s
-
0.2
A
current per diode
T
stg
Storage temperature
-40
150
C
T
j
Operating junction temperature
-
150
C
ESD LIMITING VALUE
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
V
C
Electrostatic discharge
Human body model;
-
8
kV
capacitor voltage
C = 250 pF; R = 1.5 k
k
a1
a2
1
3
2
2
3
1
December 1998
1
Rev 1.000
Philips Semiconductors
Product specification
Rectifier diodes
BYQ40EW series
ultrafast, rugged
THERMAL RESISTANCES
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
R
th j-mb
Thermal resistance junction to
per diode
-
-
1.05
K/W
mounting base
both diodes conducting
-
-
0.75
K/W
R
th j-a
Thermal resistance junction to
in free air
-
45
-
K/W
ambient
ELECTRICAL CHARACTERISTICS
characteristics are per diode at T
j
= 25 C unless otherwise stated
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
F
Forward voltage
I
F
= 20 A; T
j
= 150C
-
0.8
0.85
V
I
F
= 20 A
-
0.97
1.05
V
I
F
= 40 A
-
1.06
1.20
V
I
R
Reverse current
V
R
= V
RWM
-
6
100
A
V
R
= V
RWM
; T
j
= 100 C
-
0.7
1
mA
Q
s
Reverse recovery charge
I
F
= 2 A; V
R
30 V; -dI
F
/dt = 20 A/
s
-
8
18
nC
t
rr
Reverse recovery time
I
F
= 1 A; V
R
30 V;
-
23
30
ns
-dI
F
/dt = 100 A/
s
V
fr
Forward recovery voltage
I
F
= 1 A; dI
F
/dt = 10 A/
s
-
0.7
-
V
December 1998
2
Rev 1.000
Philips Semiconductors
Product specification
Rectifier diodes
BYQ40EW series
ultrafast, rugged
Fig.1. Definition of t
rr
, Q
s
and I
rrm
Fig.2. Definition of V
fr
Fig.3. Maximum forward dissipation P
F
= f(I
F(AV)
) per
diode; square current waveform where
I
F(AV)
=I
F(RMS)
x
D.
Fig.4. Maximum forward dissipation P
F
= f(I
F(AV)
)per
diode; sinusoidal current waveform where a = form
factor = I
F(RMS)
/ I
F(AV)
.
Fig.5. Typical t
rr
at T
j
= 25 C.
Fig.6. Typical I
rrm
at T
j
= 25 C.
Q
s
100%
10%
time
dI
dt
F
I
R
I
F
I
rrm
t
rr
BYQ40EW
0
2
4
6
8
10
12
14
16
18
20
0
5
10
15
20
Average forward current, IF(AV) (A)
Forward dissipation, PF (W)
Tmb(max) (C)
150
a = 1.57
1.9
2.2
2.8
147.9
145.8
143.7
141.6
139.5
137.4
4
135.3
133.2
131.1
129
time
time
V F
V
fr
V F
I
F
BYQ40EW
10
100
1000
1
10
100
dIF/dt (A/us)
trr / ns
IF = 1 A
BYQ40EW
0
5
10
15
20
25
30
0
5
10
15
20
25
30
Average forward current, IF(AV) (A)
Forward dissipation, PF (W)
Tmb(max) (C)
150
D = 1.0
0.5
0.2
0.1
144.75
139.5
134.25
129
T
tp
D = tp/T
123.75
118.5
BYQ40EW
0.01
0.1
1
10
1
10
100
-dIF/dt (A/us)
Irrm / A
IF = 1 A
December 1998
3
Rev 1.000
Philips Semiconductors
Product specification
Rectifier diodes
BYQ40EW series
ultrafast, rugged
Fig.7. Typical and maximum forward characteristic
I
F
= f(V
F
); parameter T
j
Fig.8. Typical Q
s
at T
j
= 25 C.
Fig.9. Transient thermal impedance; Z
th j-hs
= f(t
p
).
BYQ40EW
0
5
10
15
20
25
30
35
40
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
1.1 1.2 1.3
Forward Voltage, VF (V)
Forward Current, IF (A)
Tj = 25 C
Tj = 150 C
typ
max
BYQ40EW
1
10
100
1
10
100
-dIF/dt (A/us)
Qs / nC
IF=5A
IF=2A
IF=1A
BYQ40EW
0.01
0.1
1
10
1E-06
1E-05
1E-04
1E-03
1E-02
1E-01
1E+00
1E+01
pulse width, tp (s)
Transient Thermal Impedance, Zth j-mb (K/W)
Single pulse
tp
P
t
D
December 1998
4
Rev 1.000
Philips Semiconductors
Product specification
Rectifier diodes
BYQ40EW series
ultrafast, rugged
MECHANICAL DATA
Dimensions in mm
Net Mass: 5 g
Fig.10. SOT429 (TO247); pin 2 connected to mounting base.
Notes
1. Refer to mounting instructions for SOT429 envelope.
2. Epoxy meets UL94 V0 at 1/8".
5.3
4.0
21
max
15.5
min
1
2.2 max
0.4
2.5
0.9 max
5.3 max
3.5
16 max
5.45
seating
plane
5.45
M
o
max
15.5
max
3.2 max
2
3
1.1
3.5
1.8
7.3
max
December 1998
5
Rev 1.000
Philips Semiconductors
Product specification
Rectifier diodes
BYQ40EW series
ultrafast, rugged
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. 1999
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.
December 1998
6
Rev 1.000
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