Philips Semiconductors Product specification
Rectifier diodes PBYL1525CT, PBYL1525CTB series
Schottky barrier
FEATURES SYMBOL QUICK REFERENCE DATA
• Low forward volt drop
• Fast switching VR = 20 V/ 25 V
• Reverse surge capability
• High thermal cycling performance IO(AV) = 15 A
• Low thermal resistance VF ≤ 0.42 V
GENERAL DESCRIPTION
Dual schottky rectifier diodes intended for use as output rectifiers in low voltage, high frequency switched mode power
supplies.
The PBYL1525CT series is supplied in the SOT78 (TO220AB) conventional leaded package.
The PBYL1525CTB series is supplied in the SOT404 surface mounting package.
PINNING SOT78 (TO220AB) SOT404
PIN DESCRIPTION
1 gate
2 drain 1
3 source
tab drain
LIMITING VALUES
Limiting values in accordance with the Absolute Maximum System (IEC 134)
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
PBYL15 20CT 25CT
PBYL15 20CTB 25CTB
VRRM Peak repetitive reverse - 20 25 V
voltage
VRWM Working peak reverse - 20 25 V
voltage
VRContinuous reverse voltage Tmb ≤ 107 ˚C - 20 25 V
IO(AV) Average rectified output square wave; δ = 0.5; Tmb ≤ 127 ˚C - 15 A
current (both diodes
conducting)
IFRM Repetitive peak forward square wave; δ = 0.5; Tmb ≤ 127 ˚C - 15 A
current per diode
IFSM Non-repetitive peak forward t = 10 ms - 90 A
current per diode t = 8.3 ms - 100 A
sinusoidal; Tj = 125 ˚C prior to
surge; with reapplied VRRM(max)
IRRM Peak repetitive reverse pulse width and repetition rate - 1 A
surge current per diode limited by Tj max
TjOperating junction - 150 ˚C
temperature
Tstg Storage temperature - 65 175 ˚C
1. It is not possible to make connection to pin 2 of the SOT404 package.
k
a1 a2
13
2
123
tab
13
tab
2
March 1998 1 Rev 1.000
Philips Semiconductors Product specification
Rectifier diodes PBYL1525CT, PBYL1525CTB series
Schottky barrier
THERMAL RESISTANCES
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Rth j-mb Thermal resistance junction per diode - - 3 K/W
to mounting base both diodes - - 2.5 K/W
Rth j-a Thermal resistance junction SOT78 package, in free air - 60 - K/W
to ambient SOT404 package, pcb mounted, minimum - 50 - K/W
footprint, FR4 board
ELECTRICAL CHARACTERISTICS
All characteristics are per diode at Tj = 25 ˚C unless otherwise specified
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
VFForward voltage IF = 7.5 A; Tj = 150˚C - 0.37 0.42 V
IF = 7.5 A; Tj = 125˚C - 0.39 0.45 V
IF = 15 A; Tj = 125˚C - 0.57 0.61 V
IF = 15 A - 0.59 0.64 V
IRReverse current VR = VRWM - 0.2 5 mA
VR = VRWM; Tj = 100˚C - 10 20 mA
CdJunction capacitance VR = 5 V; f = 1 MHz, Tj = 25˚C to 125˚C - 350 - pF
March 1998 2 Rev 1.000
Philips Semiconductors Product specification
Rectifier diodes PBYL1525CT, PBYL1525CTB series
Schottky barrier
Fig.1. Maximum forward dissipation P
F
= f(I
F(AV)
) per
diode; square current waveform where
I
F(AV)
=I
F(RMS)
x
√
D.
Fig.2. Maximum forward dissipation P
F
= f(I
F(AV)
) per
diode; square current waveform where
I
F(AV)
=I
F(RMS)
x
√
D.
Fig.3. Typical and maximum forward characteristic
I
F
= f(V
F
); parameter T
j
Fig.4. Typical reverse leakage current per diode;
I
R
= f(V
R
); parameter T
j
Fig.5. Typical junction capacitance per diode;
C
d
= f(V
R
); f = 1 MHz; T
j
= 25˚C to 125 ˚C.
Fig.6. Transient thermal impedance; per diode;
Z
th j-mb
= f(t
p
).
PBYL1525CT
024681012
0
1
2
3
4
5
6
7
8
D = 1.0
0.5
0.2
0.1
Rs = 0.0213 Ohms
Vo = 0.29 V
Average forward current, IF(AV) (A)
Forward dissipation, PF (W) Tmb(max) / C
150
T
ID =
t
p
t
p
T
t
147
144
141
138
135
132
129
126
025 50
100mA
10mA
1mA
100uA
10uA
Reverse current, IR (A)
Reverse voltage, VR (V)
50 C
75 C
100 C
125 C
PBYR1045CTD
Tj = 25 C
012345678
0
1
2
3
4
5a = 1.57
1.9
2.2
2.8
4
PBYL1525CT Tmb(max) / C 135
138
141
144
147
150
Vo = 0.29 V
Rs = 0.0213 Ohms
Average forward current, IF(AV) (A)
Forward dissipation, PF (W)
1 10 100
100
1000 PBYR1025CTD
Reverse voltage, VR (V)
Junction capacitance, Cd (pF)
0 0.2 0.4 0.6 0.8 1
0
2
4
6
8
10 PBYR1025CTD
Forward voltage, VR (V)
Forward current, IF (A)
Tj = 25 C
Tj = 125 C
max
typ
1us 10us 100us 1ms 10ms 100ms 1s 10s
0.001
0.01
0.1
1
10
PBYL1025
pulse width, tp (s)
Transient thermal impedance, Zth j-mb (K/W)
D =
t
p
t
p
T
T
P
t
D
March 1998 3 Rev 1.000
Philips Semiconductors Product specification
Rectifier diodes PBYL1525CT, PBYL1525CTB series
Schottky barrier
MECHANICAL DATA
Dimensions in mm
Net Mass: 2 g
Fig.7. SOT78 (TO220AB); pin 2 connected to mounting base.
Notes
1. Refer to mounting instructions for SOT78 (TO220) envelopes.
2. Epoxy meets UL94 V0 at 1/8".
10,3
max
3,7
2,8
3,0
3,0 max
not tinned
1,3
max
(2x) 123
2,4
0,6
4,5
max
5,9
min
15,8
max
1,3
2,54 2,54
0,9 max (3x)
13,5
min
March 1998 4 Rev 1.000
Philips Semiconductors Product specification
Rectifier diodes PBYL1525CT, PBYL1525CTB series
Schottky barrier
MECHANICAL DATA
Dimensions in mm
Net Mass: 1.4 g
Fig.8. SOT404 : centre pin connected to mounting base.
MOUNTING INSTRUCTIONS
Dimensions in mm
Fig.9. SOT404 : soldering pattern for surface mounting
.
Notes
1. Epoxy meets UL94 V0 at 1/8".
11 max
4.5 max
1.4 max
10.3 max
0.5
15.4
2.5
0.85 max
(x2)
2.54 (x2)
17.5
11.5
9.0
5.08
3.8
2.0
March 1998 5 Rev 1.000
Philips Semiconductors Product specification
Rectifier diodes PBYL1525CT, PBYL1525CTB 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.
March 1998 6 Rev 1.000
