Philips Semiconductors Product specification
Rectifier diodes |
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PBYR745B, PBYR745D series |
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Schottky barrier |
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FEATURES |
SYMBOL |
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QUICK REFERENCE DATA |
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• Low forward volt drop |
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VR = 40 V/ 45 V |
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• Fast switching |
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k |
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a |
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• Reverse surge capability |
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IF(AV) = 7.5 A |
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• High thermal cycling performance |
tab |
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3 |
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• Low thermal resistance |
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VF ≤ 0.57 V |
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GENERAL DESCRIPTION
Schottky rectifier diodes in a surface mounting plastic envelope. Intended for use as output rectifiers in low voltage, high frequency switched mode power supplies.
The PBYR745B series is supplied in the SOT404 surface mounting package.
The PBYR745D series is supplied in the SOT428 surface mounting package.
PINNING |
SOT404 |
SOT428 |
PIN DESCRIPTION
1no connection
2cathode1
3anode
tab cathode
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tab |
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2 |
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2 |
1 |
3 |
1 |
3 |
LIMITING VALUES
Limiting values in accordance with the Absolute Maximum System (IEC 134)
SYMBOL |
PARAMETER |
CONDITIONS |
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MIN. |
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MAX. |
UNIT |
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PBYR7 |
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40B |
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45B |
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PBYR7 |
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40D |
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45D |
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VRRM |
Peak repetitive reverse |
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- |
40 |
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45 |
V |
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voltage |
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VRWM |
Working peak reverse |
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- |
40 |
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45 |
V |
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voltage |
Tmb ≤ 114 ˚C |
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VR |
Continuous reverse voltage |
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40 |
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45 |
V |
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IF(AV) |
Average rectified forward |
square wave; δ = 0.5; Tmb ≤ 136 ˚C |
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7.5 |
A |
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current |
square wave; δ = 0.5; Tmb ≤ 136 ˚C |
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IFRM |
Repetitive peak forward |
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15 |
A |
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current |
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IFSM |
Non-repetitive peak forward |
t = 10 ms |
PBYR7..B |
- |
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135 |
A |
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current |
t = 8.3 ms |
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- |
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150 |
A |
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t = 10 ms |
PBYR7..D |
- |
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100 |
A |
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t = 8.3 ms |
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- |
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110 |
A |
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sinusoidal; Tj = 125 ˚C prior to |
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IRRM |
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surge; with reapplied VRRM(max) |
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Peak repetitive reverse |
pulse width and repetition rate |
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1 |
A |
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Tj |
surge current |
limited by Tj max |
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Operating junction |
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150 |
˚C |
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temperature |
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Tstg |
Storage temperature |
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- 65 |
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175 |
˚C |
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1. It is not possible to make connection to pin 2 of the SOT404 or SOT428 package.
July 1998 |
1 |
Rev 1.200 |
Philips Semiconductors Product specification
Rectifier diodes |
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PBYR745B, PBYR745D series |
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Schottky barrier |
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THERMAL RESISTANCES |
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SYMBOL |
PARAMETER |
CONDITIONS |
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MIN. |
TYP. |
MAX. |
UNIT |
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Rth j-mb |
Thermal resistance junction |
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to mounting base |
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Rth j-a |
Thermal resistance junction |
pcb mounted, minimum footprint, FR4 |
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to ambient |
board |
- |
- |
3 |
K/W |
- |
50 |
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K/W |
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ELECTRICAL CHARACTERISTICS
Tj = 25 ˚C unless otherwise specified
SYMBOL |
PARAMETER |
CONDITIONS |
MIN. |
TYP. |
MAX. |
UNIT |
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VF |
Forward voltage |
IF = 7.5 A; Tj = 125˚C |
- |
0.45 |
0.57 |
V |
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IF = 15 |
A; Tj = 125˚C |
- |
0.65 |
0.72 |
V |
IR |
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IF = 15 |
A |
- |
0.64 |
0.84 |
V |
Reverse current |
VR = VRWM |
- |
0.13 |
1 |
mA |
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Cd |
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VR = VRWM; Tj = 100˚C |
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17 |
22 |
mA |
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Junction capacitance |
VR = 5 V; f = 1 MHz, Tj = 25˚C to 125˚C |
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270 |
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pF |
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July 1998 |
2 |
Rev 1.200 |
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