Datasheet

ManualsBrandsVISHAY ManualsDiodesSchottky Diode TO 262

SCHOTTKY RECTIFIER

20 Amp

20CTQ...

20CTQ...S

20CTQ... -1

www.irf.com

Bulletin PD-20056 rev. A 12/01

Major Ratings and Characteristics

F(AV)

Rectangular 20 A

waveform

RRM

range 35 to 45 V

FSM

@ tp = 5 µs sine 1060 A

10 Apk, T

= 125°C 0.57 V

(per leg)

range - 55 to 175 °C

Characteristics 20CTQ Units

Description/Features

The 20CTQ 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, free-wheeling diodes,

and reverse battery protection.

175° C T

operation

Center tap TO-220 package

Low forward voltage drop

High purity, high temperature epoxy encapsulation for

enhanced mechanical strength and moisture resistance

High frequency operation

Guard ring for enhanced ruggedness and long term

reliability

F(AV)

= 20Amp

= 35 to 45V

Case Styles

20CTQ... 20CTQ... S 20CTQ... -1

TO-220 D

PAK

Anode

Base

Common

Cathode

node

Common

Cathode

TO-262

Anode

Base

Common

Cathode

node

Common

Cathode

Anode

Base

Common

Cathode

node

Common

Cathode

Summary of content (8 pages)

PAGE 1
Bulletin PD-20056 rev. A 12/01 20CTQ... 20CTQ...S 20CTQ... -1 SCHOTTKY RECTIFIER 20 Amp IF(AV) = 20Amp VR = 35 to 45V Description/Features Major Ratings and Characteristics The 20CTQ 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, free-wheeling diodes, and reverse battery protection.
PAGE 2
0CTQ... Series Bulletin PD-20056 rev. A 12/01 Voltage Ratings Part number VR 20CTQ035 20CTQ040 20CTQ045 35 40 45 Max. DC Reverse Voltage (V) VRWM Max. Working Peak Reverse Voltage (V) Absolute Maximum Ratings Parameters 20CTQ Units IF(AV) Max. Average Forward Current 20 A Conditions 50% duty cycle @ TC = 145°C, rectangular wave form * See Fig. 5 IFSM Max. Peak One Cycle Non-Repetitive 1060 Surge Current (Per Leg) * See Fig.
PAGE 3
20CTQ... Series Bulletin PD-20056 rev. A 12/01 1000 ReverseCurrent - I (mA) R 1000 T =175°C J 10 150°C 125°C 1 100°C .1 75°C 50°C .01 25°C .001 .0001 0 ReverseVoltage- VR(V) 10 T =175°C J Fig. 2 - Typical Values Of Reverse Current Vs. Reverse Voltage (Per Leg) T =125°C J 1000 T = 25°C J 1 .1 0 10 15 20 25 30 35 40 45 5 JunctionCapacitance - C (pF) T InstantaneousForwardCurrent - I (A) F 100 100 .2 .4 .6 .8 1 1.2 1.4 T =25°C J 100 0 1.6 1.
PAGE 4
20CTQ... Series Bulletin PD-20056 rev. A 12/01 9 20CTQ RthJC (DC) =3.25°C/W 175 AveragePower Loss- (W atts) AllowableCaseTemperature- (°C) 180 170 165 160 DC 155 150 D=0.08 8 D=0.17 D=0.25 7 D=0.33 6 D=0.50 5 DC 4 RMSLimit 3 2 1 145 0 5 10 0 0 15 5 10 15 AverageForwardCurrent - I (A) F(AV) AverageForwardCurrent - IF(AV) (A) Fig. 5 - Max. Allowable Case Temperature Vs. Average Forward Current (Per Leg) Fig.
PAGE 5
20CTQ... Series Bulletin PD-20056 rev. A 12/01 Outline Table 10.54 (0.41) MAX. 3.78 (0.15) 3.54 (0.14) 1.32 (0.05) 1.22 (0.05) DIA. 6.48 (0.25) 6.23 (0.24) 2.92 (0.11) 2.54 (0.10) TERM 2 15.24 (0.60) 14.84 (0.58) 2° 1 2 3 14.09 (0.55) 3.96 (0.16) 13.47 (0.53) 3.55 (0.14) 0.10 (0.004) 2.04 (0.080) MAX. 1.40 (0.05) 2.89 (0.11) 1.15 (0.04) 2.64 (0.10) 0.94 (0.04) BASE COMMON CATHODE 2 0.69 (0.03) 1 1 2 3 0.61 (0.02) MAX. 4.57 (0.18) 2 3 ANODE COMMON ANODE CATHODE 1 2 4.32 (0.
PAGE 6
20CTQ... Series Bulletin PD-20056 rev. A 12/01 Outline Table Modified JEDEC outline TO-262 Dimensions in millimeters and (inches) BASE COMMON CATHODE 2 1 2 3 ANODE COMMON ANODE CATHODE 1 2 Marking Information EXAMPLE: THIS IS A 20CTQ045-1 LOT CODE 1789 ASSEMBLED ON WW 19, 1999 IN THE ASSEMBLY LINE "C" INTERNATIONAL RECTIFIER LOGO ASSEMBLY LOT CODE 6 PART NUMBER DATE CODE YEAR 7 = 1999 WEEK 19 LINE C www.irf.
PAGE 7
20CTQ... Series Bulletin PD-20056 rev. A 12/01 Tape & Reel Information TRR 1.60 (0.063) 1.50 (0.059) 4.10 (0.161) 3.90 (0.153) FEED DIR ECTION 1.60 (0.063) 1.50 (0.059) 1.85 (0.073) DIA. 0.368 (0.0145) 0.342 (0.0135) 11.60 (0.457) 1.65 (0.065) 11.40 (0.449) 15.42 (0.609) 15.22 (0.601) TRL 1.75 (0.069) 10.90 (0.429) 1.25 (0.049) 10.70 (0.421) 24.30 (0.957) 23.90 (0.941) DIA. 4.72 (0.186) 16.10 (0.634) 4.52 (0.178) 15.90 (0.626) FEED DIRECTION 13.50 (0.532) 26.40 (1.039) 12.80 (0.504) DIA.
PAGE 8
20CTQ... Series Bulletin PD-20056 rev. A 12/01 Data and specifications subject to change without notice. This product has been designed and qualified for Industrial Level. Qualification Standards can be found on IR's Web site. IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 TAC Fax: (310) 252-7309 Visit us at www.irf.com for sales contact information. 12/01 8 www.irf.