SCHOTTKY RECTIFIER
35 Amp, 45V
35CGQ045
The 35CGQ045 center tap Schottky rectifier has been
expressly designed to meet the rigorous requirements of hi-
rel environments. It is packaged in the hermetic isolated
TO-254AA package. The device's forward voltage drop
and reverse leakage current are optimized for the lowest
power loss and the highest circuit efficiency for typical high
frequency switching power supplies and resonent power
converters. Full MIL-PRF-19500 quality conformance
testing is available on source control drawings to
TX, TXV and S quality levels.
• Hermetically Sealed
• Center Tap
• Low Forward Voltage Drop
• High Frequency Operation
• Guard Ring for Enhanced Ruggedness and Long term
Reliability
• Lightweight
Major Ratings and Characteristics Description/Features
10/04/01
CASE STYLE
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Characteristics 35CGQ045 Units
IF(AV) 35 A
VRRM (Per Leg) 45 V
IFSM @ tp = 8.3ms half-sine 200 A
(Per Leg)
VF @ 35Apk, TJ =125°C 0.94 V
(Per Leg)
TJ, Tstg Operating and storage -55 to 150 ° C
ANODE COMMON ANODE
CATHODE
123
HIGH EFFICIENCY SERIES
IR Case Style TO-254AA
6.60 [.260]
6.32 [.249] 1.27 [.050]
1.02 [.040]
0.12 [.005]
13.84 [.545]
13.59 [.535]
13.84 [.545]
13.59 [.535]
3.81 [.150]
2X
17.40 [.685]
16.89 [.665]
A
1.14 [.045]
0.89 [.035]
0.36 [.014] B A
3X
B
20.32 [.800]
20.07 [.790]
3.78 [.149]
3.53 [.139]
123
17.40 [.685]
16.89 [.665]
3.81 [.150]
0.84 [.033]
MAX.
C
NOTES:
1. DIM ENSIO N ING & TOLERANCING PER ASM E Y14.5M-1994.
2. ALL DIMENS IONS ARE S HOWN IN MILLIMETERS [INCHES ].
3. CONT ROLLING DIMENSION: INCH.
4. CO N FORMS TO JEDEC OUTLINE TO-254A A.
PD -94298A
35CGQ045
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Part number 35CGQ045
VRMax. DC Reverse Voltage (V) (Per Leg)
VRWM Max. Working Peak Reverse Voltage (V) (Per Leg)
Voltage Ratings
45
Parameters Limits Units Conditions
IF(AV) Max. Average Forward Current 35 A 50% duty cycle @ TC = 114 °C, square waveform
See Fig. 5
IFSM Max. Peak One Cycle Non - Repetitive 200 A @ tp = 8.3 ms half-sine
Surge Current (Per Leg)
Absolute Maximum Ratings
Q Pulse Width < 300µs, Duty Cycle < 2%
Parameters Limits Units Conditions
VFM Max. Forward Voltage Drop 0.71 V @ 17.5A TJ = -55°C
(Per Leg) See Fig. 1Q0.88 V @ 35A
0.68 V @ 17.5A TJ = 25°C
0.92 V @ 35A
0.65 V @ 17.5A TJ = 125°C
0.94 V @ 35A
IRM Max. Reverse Leakage Current 0.1 m A TJ = 25°C
(Per Leg) See Fig. 2Q7.0 mA TJ = 100°CV
R = rated VR
26 mA TJ = 125°C
CTMax. Junction Capacitance (Per Leg) 1320 pF VR = 5VDC ( 1MHz, 25°C )
LSTypical Series Inductance (Per Leg) 7.8 nH Measured from anode lead to cathode lead
6mm ( 0.025 in.) from package
Electrical Specifications
Parameters Limits Units Conditions
TJMax.Junction Temperature Range -55 to 150 °C
Tstg Max. Storage Temperature Range -55 to 150 °C
RthJC Max. Thermal Resistance, Junction 1.4 °C / W DC operation See Fig. 4
to Case (Per Leg)
RthJC Max. Thermal Resistance, Junction 0.7 °C/W DC operation
to Case (Per Package)
wt Weight (Typical) 9.3 g
Die Size (Typical) 170X115 mils
Thermal-Mechanical Specifications
Case Style TO-254AA
35CGQ045
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Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance Vs.
Reverse Voltage (Per Leg)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
0.0 0.2 0.4 0.6 0.8 1.0
Forward Voltage Drop - VF (V)
1
10
100
Instantaneous Forward Current - IF (A)
Tj = -55°C
Tj = 125°C
Tj = 25°C
010 20 30 40 50
Reverse Voltage - VR (V)
0.0001
0.001
0.01
0.1
1
10
100
Reverse Current - I R ( mA )
125°C
75°C
25°C
100°C
010 20 30 40 50
Reverse Voltage -VR (V)
100
1000
10000
Junction Capacitance - CT (pF)
TJ = 25°C
35CGQ045
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Fig. 5 - Max. Allowable Case Temperature Vs.
Average Forward Current
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7903
Visit us at www.irf.com for sales contact information.
Data and specifications subject to change without notice. 10/01
010 20 30 40 50 60
Average Forward Current - IF(AV) (A)
0
20
40
60
80
100
120
140
160
180
Allowable Case Temprature - (°C)
35CGQ045
R thJC = 0.7°C/W
DC
0.01
0.1
1
10
0.00001 0.0001 0.001 0.01 0.1 1 10
Notes:
1. Duty factor D =t / t
2. Peak T =P x Z + T
1 2
JDM thJC C
P
t
t
DM
1
2
t , Rectangular Pulse Duration (sec)
Thermal Response (Z )
1
thJC
0.01
0.02
0.05
0.10
0.20
D = 0.50
SINGLE PULSE
(THERMAL RESPONSE)
