SCHOTTKY RECTIFIER. 81CNQ035A Datasheet

81CNQ035A RECTIFIER. Datasheet pdf. Equivalent

81CNQ035A Datasheet
Recommendation 81CNQ035A Datasheet
Part 81CNQ035A
Description (81CNQxxxA) SCHOTTKY RECTIFIER
Feature 81CNQ035A; Bulletin PD-20040 rev. A 09/01 81CNQ...A SERIES SCHOTTKY RECTIFIER New GenIII D-61 Package Major Ra.
Manufacture International Rectifier
Datasheet
Download 81CNQ035A Datasheet





International Rectifier 81CNQ035A
Bulletin PD-20040 rev. A 09/01
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SCHOTTKY RECTIFIER
New GenIII D-61 Package
81CNQ...A SERIES
80 Amp
Major Ratings and Characteristics
Characteristics
81CNQ...A Units
IF(AV) Rectangular
waveform
VRRM range
IFSM @ tp = 5 µs sine
VF @40 Apk, TJ = 125°C
(per leg)
TJ range
80
35 to 45
4600
0.54
- 55 to 175
A
V
A
V
°C
Description/Features
The 81CNQ...A center tap Schottky rectifier module 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 TJ operation
Center tap module
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
New fully transfer-mold low profile, small
footprint, high current package
81CNQ...A
Case Styles
81CNQ...ASM
81CNQ...ASL
D61-8
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D61-8-SM
D61-8-SL
1



International Rectifier 81CNQ035A
81CNQ...A Series
Bulletin 20040 rev. A 09/01
Voltage Ratings
Part number
VR Max. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
81CNQ035A
35
81CNQ040A
40
81CNQ045A
45
Absolute Maximum Ratings
Parameters
IF(AV) Max.AverageForwardCurrent
* See Fig. 5
IFSM Max.PeakOneCycleNon-Repetitive
SurgeCurrent (Per Leg) *SeeFig.7
EAS Non-RepetitiveAvalancheEnergy
(Per Leg)
IAR RepetitiveAvalancheCurrent
(Per Leg)
81CNQ Units
Conditions
80 A 50%dutycycle@TC=141°C,rectangularwaveform
4600
790
54
A
5µs Sineor3µsRect.pulse
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated VRRMapplied
mJ TJ = 25 °C, IAS = 8 Amps, L = 1.7 mH
8 A Currentdecayinglinearlytozeroin1µsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Electrical Specifications
Parameters
81CNQ Units
Conditions
VFM Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
IRM Max. Reverse Leakage Current
(Per Leg) * See Fig. 2 (1)
CT Max. Junction Capacitance (Per Leg)
LS Typical Series Inductance (Per Leg)
dv/dt Max. Voltage Rate of Change
(Rated VR)
0.60
0.74
0.54
0.66
5
45
2600
5.5
10000
Thermal-Mechanical Specifications
V
V
V
V
mA
mA
pF
nH
V/ µs
@ 40A
@ 80A
@ 40A
@ 80A
TJ = 25 °C
TJ = 125 °C
TJ = 25 °C
TJ = 125 °C
VR = rated VR
VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
Measured lead to lead 5mm from package body
(1) Pulse Width < 300µs, Duty Cycle <2%
Parameters
81CNQ Units
Conditions
TJ Max.JunctionTemperatureRange
Tstg Max.StorageTemperatureRange
RthJC Max.ThermalResistanceJunction
toCase (Per Leg)
RthJC Max.ThermalResistanceJunction
toCase(Per Package)
RthCS TypicalThermalResistance,Case
toHeatsink (D61-8 Only)
wt ApproximateWeight
T MountingTorque
Min.
(D61-8 Only)
Max.
-55to175
-55to175
0.85
°C
°C
°C/W DCoperation
* See Fig. 4
0.42 °C/W DCoperation
0.30
7.8(0.28)
40(35)
58(50)
°C/W Mountingsurface,smoothandgreased
Device flatness < 5 mils
g (oz.)
Kg-cm
(Ibf-in)
2 www.irf.com



International Rectifier 81CNQ035A
1000
100
10
1
TJ = 175˚C
T = 125˚C
J
T = 25˚C
J
81CNQ...A Series
Bulletin 20040 rev. A 09/01
1000
100
10
1
0.1
0.01
Tj = 175˚C
150˚C
125˚C
100˚C
75˚C
50˚C
25˚C
0.001
0 5 10 15 20 25 30 35 40 45
Reverse Voltage - VR (V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (PerLeg)
10000
1000
TJ = 25˚C
0.1
0
0.2 0.4 0.6 0.8
1
ForwardVoltageDrop-VFM(V)
Fig.1-Max. Forward Voltage Drop Characteristics
(PerLeg)
1
100
0
10 20 30 40 50
ReverseVoltage-VR(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
D = 0.50
D = 0.33
D = 0.25
D = 0.17
0.1 D = 0.08
PDM
0.01
0.00001
Single Pulse
(Thermal Resistance)
Notes:
t1
t2
1. Duty factor D = t1/ t2
2. Peak Tj = Pdm x ZthJC + Tc
0.0001
0.001
0.01
0.1
1
t1 , Rectangular Pulse Duration (Seconds)
10
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
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100
3





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