SCHOTTKY RECTIFIER
60 Amp
61CNQ... SERIES
www.irf.com
1
PD-2.248 rev. A 12/97
Dimensions in millimeters and inches
Outline D - 61 - 6
CASE STYLE AND DIMENSIONS
I
F(AV)
Rectangular
60
A
waveform
V
RRM
35 to 45
V
I
FSM
@ tp = 5 s sine
6300
A
V
F
@
30 Apk, T
J
= 125C
0.49
V
(per leg)
T
J
- 55 to 175
C
Characteristics
61CNQ...
Units
Major Ratings and Characteristics
The 61CNQ 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 T
J
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
Low profile, small footprint, high current package
Description/Features
61CNQ... Series
2
PD-2.248 rev. A 12/97
www.irf.com
T
J
Max. Junction Temperature Range
-55 to 175
C
T
stg
Max. Storage Temperature Range
-55 to 175
C
R
thJC
Max. Thermal Resistance Junction
0.85
C/W
DC operation
* See Fig. 4
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
0.42
C/W
DC operation
to Case (Per Package)
R
thCS
Typical Thermal Resistance, Case
0.30
C/W
Mounting surface , smooth and greased
to Heatsink
wt
Approximate Weight
7.8 (0.28)
g (oz.)
T
Mounting Torque
Min.
40 (35)
Max.
58 (50)
Case Style
D - 61 - 6
Thermal-Mechanical Specifications
Kg-cm
(Ibf-in)
V
FM
Max. Forward Voltage Drop
0.56
V
@ 30A
(Per Leg) * See Fig. 1
(1)
0.68
V
@ 60A
0.49
V
@ 30A
0.60
V
@ 60A
I
RM
Max. Reverse Leakage Current
5
mA
T
J
= 25 C
(Per Leg) * See Fig. 2
(1)
45
mA
T
J
= 125 C
C
T
Max. Junction Capacitance (Per Leg)
2600
pF
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25C
L
S
Typical Series Inductance (Per Leg)
6.0
nH
Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change
10,000
V/ s
(Rated V
R
)
T
J
= 25 C
T
J
= 125 C
Electrical Specifications
V
R
= rated V
R
Absolute Maximum Ratings
Following any rated
load condition and with
rated V
RRM
applied
Parameters
61CNQ Units
Conditions
I
F(AV)
Max. Average Forward Current
60
A
50% duty cycle @ T
C
= 149 C, rectangular wave form
* See Fig. 5
I
FSM
Max. Peak One Cycle Non-Repetitive
6300
5s Sine or 3s Rect. pulse
Surge Current (Per Leg) * See Fig. 7
820
10ms Sine or 6ms Rect. pulse
E
AS
Non-Repetitive Avalanche Energy
40
mJ
T
J
= 25 C, I
AS
= 6 Amps, L = 2.2 mH
(Per Leg)
I
AR
Repetitive Avalanche Current
6
A
Current decaying linearly to zero in 1 sec
(Per Leg)
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
A
Part number
61CNQ035
61CNQ040
61CNQ045
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
Voltage Ratings
35
40
45
Parameters
61CNQ Units
Conditions
Parameters
61CNQ Units
Conditions
(1) Pulse Width < 300s, Duty Cycle <2%
61CNQ... Series
3
PD-2.248 rev. A 12/97
www.irf.com
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
.001
.01
.1
1
10
100
1000
0
5
10 15 20 25 30 35 40 45
R
R
T = 175C
150C
125C
100C
75C
50C
25C
J
Reverse Voltage - V (V)
R
e
v
e
rs
e
C
u
rr
e
n
t
- I
(m
A)
.01
.1
1
.00001
.0001
.001
.01
.1
1
10
100
D = 0.33
D = 0.50
D = 0.25
D = 0.17
D = 0.08
1
th
J
C
t , Rectangular Pulse Duration (Seconds)
Th
e
r
m
al
I
m
pe
da
nc
e
-
Z
(
C
/
W
)
Single Pulse
(Thermal Resistance)
2
t
1
t
P
DM
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
1
J
DM
thJC
C
2
.1
1
10
100
1000
0
.1
.2
.3
.4
.5
.6
.7
.8
.9
1 1.1
FM
F
I
n
s
t
ant
aneo
u
s
F
o
r
w
ar
d C
u
r
r
e
n
t
-
I
(
A
)
Forward Voltage Drop - V (V)
T = 175C
T = 125C
T = 25C
J
J
J
100
1000
10000
0
10
20
30
40
50
T = 25C
J
Reverse Voltage - V (V)
R
T
J
u
n
c
t
i
on C
a
pa
c
i
t
a
n
c
e -
C
(
p
F
)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
61CNQ... Series
4
PD-2.248 rev. A 12/97
www.irf.com
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Fig. 8 - Unclamped Inductive Test Circuit
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
0
5
10
15
20
25
0
5
10 15 20 25 30 35 40 45
DC
Av
e
r
a
g
e
Po
w
er
Lo
s
s
-
(
W
at
t
s
)
F(AV)
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
RMS Limit
Average Forward Current - I (A)
150
155
160
165
170
175
180
0
10
20
30
40
50
DC
A
l
l
o
wa
b
l
e
Ca
s
e
T
e
m
p
e
ra
t
u
re
-
(
C
)
Average Forward Current - I (A)
F(AV)
61CNQ
R (DC) = 0.85C/W
thJC
100
1000
10000
10
100
1000
10000
FS
M
p
N
o
n-
R
e
pet
i
t
i
v
e
S
u
r
g
e
C
u
r
r
e
nt
-
I
(
A
)
At Any Rated Load Condition
And With Rated V Applied
Following Surge
RRM
Square Wave Pulse Duration - t (microsec)
FREE-WHEEL
DIODE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SWITCH
IRFP460
L
DUT
Rg = 25 ohm
Vd = 25 Volt
+
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