Vishay VS-18TQ035SPbF, VS-18TQ040SPbF, VS-18TQ045SPbF Data Sheet

VS-18TQ035SPbF, VS-18TQ040SPbF, VS-18TQ045SPbF

D2PAK

PRODUCT SUMMARY

I

F(AV)

V

R

Schottky Rectifier, 18 A

FEATURES

cathode

1

N/C

Base

2

3

Anode

18 A

35 V to 45 V

• 175 °C TJ 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

• Meets MSL level 1, per J-STD-020, LF maximum peak of
260 °C

• Halogen-free according to IEC 61249-2-21 definition

• Compliant to RoHS directive 2002/95/EC

• AEC-Q101 qualified

DESCRIPTION

The VS-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.

Vishay High Power Products

MAJOR RATINGS AND CHARACTERISTICS

SYMBOL CHARACTERISTICS VALUES UNITS

I

F(AV)

V

I

FSM

V

T

RRM

F

J

Rectangular waveform 18 A

Range 35 to 45 V

tp = 5 μs sine 1800 A

18 Apk, TJ = 125 °C 0.53 V

Range - 55 to 175 °C

VOLTAGE RATINGS

PARAMETER SYMBOL VS-18TQ035SPbF VS-18TQ040SPbF VS-18TQ045SPbF UNITS

Maximum DC reverse voltage V

Maximum working peak reverse voltage V

R

RWM

35 40 45 V

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS

Maximum average forward current
See fig. 5

Maximum peak one cycle
non-repetitive surge current
See fig. 7

Non-repetitive avalanche energy E

Repetitive avalanche current I

I

F(AV)

I

FSM

50 % duty cycle at TC = 149 °C, rectangular waveform 18 A

5 μs sine or 3 μs rect. pulse

10 ms sine or 6 ms rect. pulse 390

TJ = 25 °C, IAS = 3.6 A, L = 3.7 mH 24 mJ

AS

AR

Current decaying linearly to zero in 1 μs
Frequency limited by T

maximum VA = 1.5 x VR typical

J

Following any rated
load condition and with
rated V

RRM

applied

1800

A

3.6 A

Document Number: 94150 For technical questions, contact: [e-mail]
Revision: 12-Mar-10 1

www.vishay.com

VS-18TQ035SPbF, VS-18TQ040SPbF, VS-18TQ045SPbF

Vishay High Power Products

Schottky Rectifier, 18 A

ELECTRICAL SPECIFICATIONS

PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS

18 A

Maximum forward voltage drop
See fig. 1

V

FM

36 A 0.72

(1)

18 A

36 A 0.67

Maximum reverse leakage current
See fig. 2

I

RM

Maximum junction capacitance C

Typical series inductance L

T

S

TJ = 25 °C

(1)

T

= 125 °C 25

J

VR = 5 VDC (test signal range 100 kHz to 1 MHz), 25 °C 1400 pF

Measured lead to lead 5 mm from package body 8.0 nH

Maximum voltage rate of change dV/dt Rated V

T

= 25 °C

J

= 125 °C

T

J

V

= Rated V

R

R

R

0.60

0.53

2.5

10 000 V/μs

Note

(1)

Pulse width < 300 μs, duty cycle < 2 %

THERMAL - MECHANICAL SPECIFICATIONS

PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS

Maximum junction and
storage temperature range

Maximum thermal resistance,
junction to case

Typical thermal resistance,
case to heatsink

Approximate weight

Mounting torque

minimum 6 (5)

maximum 12 (10)

Marking device Case style D

, T

T

J

Stg

R

thJC

R

thCS

DC operation
See fig. 4

Mounting surface, smooth and greased 0.50

- 55 to 175 °C

1.50

2g

0.07 oz.

kgf · cm

(lbf · in)

18TQ035S

2

PAK

18TQ040S

18TQ045S

V

mA

°C/W

www.vishay.com For technical questions, contact: [e-mail]

Document Number: 94150

2 Revision: 12-Mar-10

VS-18TQ035SPbF, VS-18TQ040SPbF, VS-18TQ045SPbF

1000

100

10

Current (A)

1

- Instantaneous Forward

F

I

0.1
0 0.4 0.8 1.2 1.4 1.6

0.2 0.6 1.0

V

- Forward Voltage Drop (V)

FM

TJ = 175 °C
T

= 125 °C

J

= 25 °C

T

J

Schottky Rectifier, 18 A

1000

100

10

0.1

0.01

- Reverse Current (mA)

R

I

0.001

0.0001

Vishay High Power Products

TJ = 175 °C

TJ = 150 °C

TJ = 125 °C

1

TJ = 50 °C

0 5 25 351510 30 4020 45

TJ = 100 °C

TJ = 75 °C

TJ = 25 °C

VR - Reverse Voltage (V)

Fig. 1 - Maximum Forward Voltage Drop Characteristics Fig. 2 - Typical Values of Reverse Current vs.

Reverse Voltage

10 000

1000

- Junction Capacitance (pF)

T

C

100

01020 4030 50

TJ = 25 °C

VR - Reverse Voltage (V)

Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage

10

1

P

0.1

0.01

- Thermal Impedance (°C/W)

thJC

Z

0.001

0.00001 0.0001 0.001 0.01 0.1 1 10 100

Single pulse

(thermal resistance)

D = 0.50
D = 0.33
D = 0.25
D = 0.17
D = 0.08

Notes:

1. Duty factor D = t

2. Peak TJ = PDM x Z

DM

t

1

1/t2

thJC

t1 - Rectangular Pulse Duration (s)

Fig. 4 - Maximum Thermal Impedance Z

Characteristics

thJC

t

2

.

+ T

C

.

Document Number: 94150 For technical questions, contact: [e-mail]

www.vishay.com

Revision: 12-Mar-10 3

VS-18TQ035SPbF, VS-18TQ040SPbF, VS-18TQ045SPbF

Vishay High Power Products

180

DC

18TQ

(DC) = 1.50 °C/W

R

thJC

10 000

175

170

165

160

155

Allowable Case Temperature (°C)

150

02812

I

824

41620

- Average Forward Current (A)

F(AV)

Fig. 5 - Maximum Allowable Case Temperature vs.

Average Forward Current

Schottky Rectifier, 18 A

15

10

5

Average Power Loss (W)

0

0

At any rated load condition
and with rated V applied
following surge

RRM

D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50

RMS limit

DC

828

4

I

- Average Forward Current (A)

F(AV)

16 24

12

20

Fig. 6 - Forward Power Loss Characteristics

1000

- Non-Repetitive Surge Current (A)

100

FSM

I

10

100

tp - Square Wave Pulse Duration (µs)

Fig. 7 - Maximum Non-Repetitive Surge Current

L

D.U.T.

Current
monitor

IRFP460

= 25 Ω

R

g

Fig. 8 - Unclamped Inductive Test Circuit

1000

High-speed

Freewheel

diode

40HFL40S02

switch

10 000

V

= 25 V

d

+

www.vishay.com For technical questions, contact: [e-mail]

Document Number: 94150

4 Revision: 12-Mar-10