18TQ...SPbF
Vishay High Power Products
Schottky Rectifier, 18 A
FEATURES
• 175 °C TJ operation
• Low forward voltage drop
• High frequency operation
Base
cathode
2
Available
RoHS*
COMPLIANT
• High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
• Guard ring for enhanced ruggedness and long term
reliability
3
1
D2PAK
N/C
Anode
• Lead (Pb)-free (“PbF” suffix)
• Designed and qualified for Q101 level
DESCRIPTION
PRODUCT SUMMARY
The 18TQ... Schottky rectifier series has been optimized for
low reverse leakage at high temperature. The proprietary
barrier technology allows for reliable operation up to 175 °C
junction temperature. Typical applications are in switching
power supplies, converters, freewheeling diodes, and
reverse battery protection.
IF(AV)
18 A
35 to 45 V
VR
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL
IF(AV)
VRRM
IFSM
CHARACTERISTICS
VALUES
18
UNITS
Rectangular waveform
A
V
Range
35 to 45
1800
tp = 5 µs sine
18 Apk, TJ = 125 °C
Range
A
VF
0.53
V
TJ
- 55 to 175
°C
VOLTAGE RATINGS
PARAMETER
SYMBOL
18TQ035SPbF
18TQ040SPbF
18TQ045SPbF
UNITS
Maximum DC reverse voltage
Maximum working peak reverse voltage
VR
35
40
45
V
VRWM
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
TEST CONDITIONS
50 % duty cycle at TC = 149 °C, rectangular waveform
VALUES
UNITS
Maximum average forward current
See fig. 5
IF(AV)
18
A
Maximum peak one cycle
non-repetitive surge current
See fig. 7
Following any rated
load condition and with
rated VRRM applied
5 µs sine or 3 µs rect. pulse
1800
IFSM
A
10 ms sine or 6 ms rect. pulse
390
24
Non-repetitive avalanche energy
Repetitive avalanche current
EAS
IAR
TJ = 25 °C, IAS = 3.6 A, L = 3.7 mH
mJ
A
Current decaying linearly to zero in 1 µs
Frequency limited by TJ maximum VA = 1.5 x VR typical
3.6
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 94150
Revision: 26-May-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
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