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20TQ035-20TQ040-20TQ045 -20TQ045S-20TQ045STRR
35V 20A Schottky Discrete Diode in a TO-220AC package
International
ISER Rectifier
Bulletin PD-20241 rev.B 12/01
20TQ...
20TQ...S
SCHOTTKYRECTIFlER
Major Ratings and Characteristics
20 Amp
|F(AV) = 19Amp
VR = 35 to 45V
Description) Features
Cathode
Cathode Anode
TO-220AC
. . . The 20TQ Schottky rectifier series has been optimized for
Characteristics 20TQ Units very low forward voltage drop, with moderate leakage. The
proprietary barriertechnology allows for reliable operation up
IHAV) Rectangular 20 A to 150° C junction temperature. Typical applications are in
waveform switching power supplies, converters, free-wheeling diodes,
and reverse battery protection.
VRRM range 35to45 V . 150° C T J operation
- . . High purity, high temperature epoxy encapsulation for
IFSM @tp - 5 ps sme 1800 A enhanced mechanical strength and moisture resistance
. Low forward voltage drop
V 20A k,T = 125°C 0.51 V . .
F @ p J o High frequency operation
0 . Guard ring for enhanced ruggedness and long term
To range -55to150 C reliability
Case Styles
Cathode
N/C Anode
International
20TQ... Series
Bulletin PD-20241 rev. B 12/01 IDR Rechfler
Voltage Ratings
Part number 20TQO35 20TQ040 20TQO45
VR Max. DC Reverse Voltage (V)
V M . 35 40 45
RWM ax. Working Peak Reverse Voltage (V)
Absolute Maximum Ratings
Parameters 20TQ Units Conditions
IHAV) Max. Average Forward Current 20 A 50% duty cycle @ Tc =116° C, rectangularwave form
*See Fig. 5
_ . . . Following any rated
IFSM Max.PeakOneCycleNon Repetitive 1800 A 5ps Sineor3ps Rect.pulse load condition and
SurgeCurrent * See Fig. 7 400 10msSine or6ms Rect. pulse with rated VRRM applied
EAs Non-RepetitiveAvalancheEnergy 27 mJ T J=25°C, |As=4Amps, L=3.4mH
|AR RepetitiveAvalancheCurrent 4 A Currentdecaying Iinearlytozeroin1 psec
Frequencylimited byT, max.VA=1.5xVR typical
Electrical Specifications
Parameters 20TQ Units Conditions
VFM Max. Forward Voltage Drop (1) 0.57 V @ 20A T - 25 "C
* See Fig. 1 0.73 v @ 40A J
0.51 v @20A To-- 125°C
0.67 V © 40A
lo, Max. Reverse Leakage Current (1) 2.7 mA T, = 25 "C
. VR = rated VR
*See Fig.2 105 mA TJ=125°C
c, Max. Junction Capacitance 1400 pF v,, = 5VDC, (test signal range 100Khz to 1Mhz) 25 ''C
LS Typical Series Inductance 8.0 nH Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change 10000 VI us
(Rated VR)
(1) Pulse VWdth < 300ps, Duty Cycle < 2%
Thermal-Mechanical Specifications
Parameters 20TQ Units Conditions
TJ Max.Junction Temperature Range -55to150 "C
Tstg Max. StorageTemperature Range -55to 150 "C
Rea: Max.ThermaI ResistanceJunction 1.50 ''CAN DC operation *See Fig.4
to Case
Rmcs TypicalThermaI Resistance, Caseto 0.50 ''C/W Mounting surface,smooth and greased
Heatsink
wt ApproximateWeight 2(0.07) g (oz.)
T MountingTorque Min. 6(5) Kg-cm
Max. 12(10) (Ibf-in)
