18TQ050PBF Datasheet, PDF (1/7 Pages) Vishay Siliconix – Schottky Rectifier, 18 A

18TQ0..PbF Series
Vishay High Power Products
Schottky Rectifier, 18 A
Base
cathode
2
TO-220AC
1
3
Cathode Anode
PRODUCT SUMMARY
I_F(AV)
V_R
18 A
35 V to 50 V
FEATURES
• 175 °C T_J operation
• Low forward voltage drop
• High frequency operation
• High purity, high temperature epoxy
encapsulation for enhanced mechanical strength and
moisture resistance
• Guard ring for enhanced ruggedness and long term
reliability
• Compliant to RoHS directive 2002/95/EC
• Designed and qualified for industrial level
DESCRIPTION
The 18TQ...PbF 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.
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL
CHARACTERISTICS
I_F(AV)
V_RRM
I_FSM
V_F
T_J
Rectangular waveform
Range
t_p = 5 μs sine
18 Apk, T_J = 125 °C
Range
VALUES
18
35 to 50
1800
0.53
- 55 to 175
UNITS
A
V
A
V
°C
VOLTAGE RATINGS
PARAMETER
Maximum DC reverse voltage
Maximum working peak reverse voltage
SYMBOL
V_R
V_RWM
18TQ035PbF
35
18TQ040PbF
40
18TQ045PbF
45
18TQ050PbF
50
UNITS
V
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Maximum average forward current
See fig. 5
I_F(AV)
Maximum peak one cycle
non-repetitive surge current
I_FSM
See fig. 7
Non-repetitive avalanche energy
E_AS
Repetitive avalanche current
I_AR
TEST CONDITIONS
50 % duty cycle at T_C = 149 °C, rectangular waveform
5 μs sine or 3 μs rect. pulse
10 ms sine or 6 ms rect. pulse
Following any rated load
condition and with rated
V_RRM applied
T_J = 25 °C, I_AS = 3.6 A, L = 3.7 mH
Current decaying linearly to zero in 1 μs
Frequency limited by T_J maximum V_A = 1.5 x V_R typical
VALUES
18
1800
390
24
3.6
UNITS
A
mJ
A
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 94149
Revision: 10-Nov-09
For technical questions, contact: [e-mail]
www.vishay.com
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