Page 1
Philips Semiconductors Preliminary specification
Rectifier diodes PBYR4045WT series
Schottky barrier
FEATURES SYMBOL QUICK REFERENCE DATA
• Low forward volt drop
• Fast switching V
• Reverse surge capability
• High thermal cycling performance I
a1
13
a2
• Low thermal resistance
k
2
GENERAL DESCRIPTION PINNING SOT429 (TO247)
Dual, common cathode schottky PIN DESCRIPTION
rectifier diodes in a plastic
envelope. Intended for use as 1 anode 1 (a)
output rectifiersin low voltage, high
frequency switched mode power 2 cathode (k)
supplies.
The PBYR4045WT series is
suppliedintheconventionalleaded tab cathode
SOT429 (TO247) package.
3 anode 2 (a)
= 40 V/ 45 V
R
= 40 A
F(AV)
VF ≤ 0.6 V
2
3
1
LIMITING VALUES
Limiting values in accordance with the Absolute Maximum System (IEC 134)
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
PBYR40 40WT 45WT
V
RRM
Peak repetitive reverse - 40 45 V
voltage
V
V
I
F(AV)
I
FRM
I
FSM
RWM
R
Working peak reverse - 40 45 V
voltage
Continuous reverse voltage Tmb ≤ 109 ˚C - 40 45 V
Average rectified forward square wave; δ = 0.5; Tmb ≤ 125 ˚C - 40 A
current
Repetitive peak forward square wave; δ = 0.5; Tmb ≤ 125 ˚C - 40 A
current
Non-repetitive peak forward t = 10 ms - 180 A
current t = 8.3 ms - 200 A
sinusoidal; Tj = 125 ˚C prior to
I
RRM
T
surge; with reapplied V
Peak repetitive reverse pulse width and repetition rate - 2 A
surge current limited by T
j
Operating junction - 150 ˚C
j max
RRM(max)
temperature
T
stg
Storage temperature - 65 175 ˚C
THERMAL RESISTANCES
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
R
R
th j-mb
th j-a
Thermal resistance junction per diode - - 1 K/W
to mounting base both diodes - - 0.85 K/W
Thermal resistance junction in free air - 45 - K/W
to ambient
November 1998 1 Rev 1.200
Page 2
Philips Semiconductors Preliminary specification
Rectifier diodes PBYR4045WT series
Schottky barrier
ELECTRICAL CHARACTERISTICS
Tj = 25 ˚C unless otherwise specified
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
F
I
R
C
d
Forward voltage per diode IF = 20 A; Tj = 125˚C - 0.57 0.6 V
IF = 40 A; Tj = 125˚C - 0.72 0.75 V
IF = 20 A - 0.67 0.7 V
IF = 40 A - 0.77 0.8 V
Reverse current per diode VR = V
VR = V
RWM
; Tj = 100˚C - 12 50 mA
RWM
- 0.5 2 mA
Junction capacitance VR = 5 V; f = 1 MHz, Tj = 25˚C to 125˚C - 1000 - pF
November 1998 2 Rev 1.200
Page 3
Philips Semiconductors Preliminary specification
Rectifier diodes PBYR4045WT series
Schottky barrier
MECHANICAL DATA
Dimensions in mm
Net Mass: 5 g
21
max
15.5
min
3.5
4.0
max
2.2 max
3.2 max
16 max
5.3
15.5
max
1
2
5.45
3
1.1
5.45
7.3
seating
plane
0.4
5.3 max
1.8
o
3.5
max
2.5
0.9 max
M
Fig.1. 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".
November 1998 3 Rev 1.200
Page 4
Philips Semiconductors Preliminary specification
Rectifier diodes PBYR4045WT series
Schottky barrier
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.
November 1998 4 Rev 1.200
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