Vishay 20CTQ...PbF Series Data Sheet

TO-220AB

Anode

13

2

Base

common

cathode

2

Common

cathode

Anode

Available

Pb-free

RoHS*

COMPLIANT

Vishay High Power Products

Schottky Rectifier, 2 x 10 A

FEATURES

• 175 °C TJ operation

• Center tap TO-220 package

• 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

• Lead (Pb)-free (“PbF” suffix)

• Designed and qualified for industrial level

20CTQ...PbF Series

PRODUCT SUMMARY

I

F(AV)

V

R

2 x 10 A

35 to 45 V

The 20CTQ...PbF center tap 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

DESCRIPTION

SYMBOL CHARACTERISTICS VALUES UNITS

I

F(AV)

V

RRM

I

FSM

V

F

T

J

Rectangular waveform 20 A

Range 35 to 45 V

tp = 5 µs sine 1060 A

10 Apk, TJ = 125 °C (per leg) 0.57 V

Range - 55 to 175 °C

VOLTAGE RATINGS

PARAMETER SYMBOL 20CTQ035PbF 20CTQ040PbF 20CTQ045PbF 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 per leg
See fig. 7

Non-repetitive avalanche energy per leg E

Repetitive avalanche current per leg I

* Pb containing terminations are not RoHS compliant, exemptions may apply

Document Number: 94162 For technical questions, contact: [e-mail]
Revision: 01-Sep-08 1

I

F(AV)

I

FSM

AR

50 % duty cycle at TC = 145 °C, rectangular waveform 20

5 µs sine or 3 µs rect. pulse

10 ms sine or 6 ms rect. pulse 265

TJ = 25 °C, IAS = 2.0 A, L = 6.5 mH 13 mJ

AS

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

applied

RRM

1060

2.0 A

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A

20CTQ...PbF Series

Vishay High Power Products

Schottky Rectifier, 2 x 10 A

ELECTRICAL SPECIFICATIONS

PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS

10 A

Maximum forward voltage drop per leg
See fig. 1

V

FM

20 A 0.76

(1)

10 A

20 A 0.68

Maximum reverse leakage current per leg
See fig. 2

I

RM

Maximum junction capacitance per leg C

Typical series inductance per leg L

TJ = 25 °C

(1)

T

= 125 °C 15

J

VR = 5 VDC (test signal range 100 kHz to 1 MHz) 25 °C 900 pF

T

Measured lead to lead 5 mm from package body 8.0 nH

S

Maximum voltage rate of change dV/dt Rated V

T

= 25 °C

J

= 125 °C

T

J

V

= Rated V

R

R

R

0.64

0.57

2

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 per leg

Maximum thermal resistance,
junction to case per package

Typical thermal resistance,
case to heatsink

Approximate weight

Mounting torque

minimum 6 (5)

maximum 12 (10)

Marking device Case style TO-220AB

T

, T

J

Stg

DC operation
See fig. 4

R

thJC

- 55 to 175 °C

3.25

DC operation 1.63

R

thCS

Mounting surface, smooth and greased 0.50

2g

0.07 oz.

kgf · cm

(lbf · in)

20CTQ035

20CTQ040

20CTQ045

V

mA

°C/W

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

Document Number: 94162

2 Revision: 01-Sep-08

1

10

0 1.80.8 1.2

VFM - Forward Voltage Drop (V)

I

F

- Instantaneous Forward Current (A)

100

0.4 1.6

1000

TJ = 175 °C
T

J

= 125 °C

T

J

= 25 °C

0.1

0.2 0.6 1.0 1.4

1000

020 50

100

VR - Reverse Voltage (V)

C

T

- Junction Capacitance (pF)

TJ = 25 °C

10 30 40

0.01

0.1

1

10

0.00001 0.0001 0.001 0.01 0.1

t1 - Rectangular Pulse Duration (s)

Z

thJC

- Thermal Impedance (°C/W)

1 10 100

0.001

Single pulse

(thermal resistance)

Notes:

1. Duty factor D = t

1/t2

2. Peak TJ = PDM x Z

thJC

+ T

C

P

DM

t

1

t

2

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

20CTQ...PbF Series

Schottky Rectifier, 2 x 10 A

Fig. 1 - Maximum Forward Voltage Drop Characteristics

(Per Leg)

Vishay High Power Products

1000

100

0.01

- Reverse Current (mA)

R

I

0.001

0.0001

TJ = 175 °C

10

1

TJ = 125 °C

0.1

TJ = 75 °C

0

525354515

Fig. 2 - Typical Values of Reverse Current vs.

TJ = 150 °C

TJ = 100 °C

TJ = 50 °C

TJ = 25 °C

10 20 30 40

VR - Reverse Voltage (V)

Reverse Voltage (Per Leg)

Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage (Per Leg)

Document Number: 94162 For technical questions, contact: [e-mail]
Revision: 01-Sep-08 3

Fig. 4 - Maximum Thermal Impedance Z

Characteristics (Per Leg)

thJC

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20CTQ...PbF Series

9

0

015

4

Average Power Loss (W)

I

F(AV)

- Average Forward Current (A)

510

1

2

3

5

7

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

RMS limit

6

8

DC

1000

100 1000

tp - Square Wave Pulse Duration (µs)

I

FSM

- Non-Repetitive Surge Current (A)

100

10 00010

At any rated load condition
and with rated V

RRM

applied

following surge

Current
monitor

High-speed

switch

D.U.T.

R

g

= 25 Ω

+

Freewheel

diode

V

d

= 25 V

L

IRFP460

40HFL40S02

Vishay High Power Products

180

175

170

165

160

155

150

Allowable Case Temperature (°C)

145

015

I

- Average Forward Current (A)

F(AV)

Fig. 5 - Maximum Allowable Case Temperature vs.

Average Forward Current (Per Leg)

20CTQ

(DC) = 3.25 °C/W

R

thJC

DC

105

Schottky Rectifier, 2 x 10 A

Fig. 6 - Forward Power Loss Characteristics (Per Leg)

Fig. 7 - Maximum Non-Repetitive Surge Current (Per Leg)

www.vishay.com For technical questions, contact: [e-mail]
4 Revision: 01-Sep-08

Fig. 8 - Unclamped Inductive Test Circuit

Document Number: 94162

20CTQ...PbF Series

Schottky Rectifier, 2 x 10 A

ORDERING INFORMATION TABLE

Device code

20 C T Q 045 PbF

1 - Current rating (20 = 20 A)

2 - Circuit configuration:

3 - Package:

4 - Schottky “Q” series

5

6

C = Common cathode

T = TO-220

- Voltage ratings

-

None = Standard production

PbF = Lead (Pb)-free

51324

Vishay High Power Products

6

035 = 35 V
040 = 40 V
045 = 45 V

Tube standard pack quantity: 50 pieces

LINKS TO RELATED DOCUMENTS

Dimensions www.vishay.com/doc?95222

Part marking information www.vishay.com/doc?95225

Document Number: 94162 For technical questions, contact: [e-mail]
Revision: 01-Sep-08 5

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DIMENSIONS in millimeters and inches

13

2

D

D1

H1

Q

13

2

C

C

D

D

3 x b23 x b

(b, b2)

b1, b3

(H1)

D2

Detail B

C

A

B

L

e1

Lead tip

E

E2

Ø P

0.014 AB

M M

0.015 AB

MM

Seating

plane

c

A2

A1

A

A

A

Lead assignments

Diodes

1. - Anode/open

2. - Cathode

3. - Anode

Conforms to JEDEC outline TO-220AB

(6)

(6)

(7)

(6)

(7)

e

2 x

L1

(2)

Detail B

Section C - C and D - D

View A - A

Base metal Plating

(4)

(4)

c1

c

(6)

Thermal pad

(E)

E1

(6)

Outline Dimensions

Vishay Semiconductors

TO-220AB

SYMBOL

A 4.25 4.65 0.167 0.183 E 10.11 10.51 0.398 0.414 3, 6
A1 1.14 1.40 0.045 0.055 E1 6.86 8.89 0.270 0.350 6
A2 2.56 2.92 0.101 0.115 E2 - 0.76 - 0.030 7

b 0.69 1.01 0.027 0.040 e 2.41 2.67 0.095 0.105
b1 0.38 0.97 0.015 0.038 4 e1 4.88 5.28 0.192 0.208
b2 1.20 1.73 0.047 0.068 H1 6.09 6.48 0.240 0.255 6, 7
b3 1.14 1.73 0.045 0.068 4 L 13.52 14.02 0.532 0.552

MILLIMETERS INCHES
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.

c 0.36 0.61 0.014 0.024 L1 3.32 3.82 0.131 0.150 2

c1 0.36 0.56 0.014 0.022 4 Ø P 3.54 3.73 0.139 0.147

D 14.85 15.25 0.585 0.600 3 Q 2.60 3.00 0.102 0.118
D1 8.38 9.02 0.330 0.355  90° to 93° 90° to 93°
D2 11.68 12.88 0.460 0.507 6

Notes

(1)

Dimensioning and tolerancing as per ASME Y14.5M-1994

(2)

Lead dimension and finish uncontrolled in L1

(3)

Dimension D, D1 and E do not include mold flash. Mold flash
shall not exceed 0.127 mm (0.005") per side. These dimensions
are measured at the outermost extremes of the plastic body

(4)

Dimension b1, b3 and c1 apply to base metal only

(5)

Controlling dimensions: inches

(6)

Thermal pad contour optional within dimensions E, H1, D2 and
E1

Document Number: 95222 For technical questions within your region, please contact one of the following: www.vishay.com
Revision: 08-Mar-11 [e-mail]

NOTES SYMBOL

, [e-mail], [e-mail] 1

(7)

(8)

Dimensions E2 x H1 define a zone where stamping and
singulation irregularities are allowed
Outline conforms to JEDEC TO-220, except A2 (maximum) and
D2 (minimum) where dimensions are derived from the actual
package outline

MILLIMETERS INCHES

NOTES

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