LQA40T150C, LQA40B150C
Qspeed™ Family
150 V, 40 A Common-Cathode Diode
www.power.com Dec. 2014
Product Summary
IF(AVG) per diode
20
A
VRRM
150
V
QRR (Typ at 125 °C)
33.6
nC
IRRM (Typ at 125 °C)
1.86
A
Softness tb/ta (Typ at 125 °C)
0.57
TO-220AB TO-263AB
LQA40T150C LQA40B150C
RoHS Compliant
Package uses Lead-free plating and “Green” mold
compound Halogen free per IEC 61249-2-21.
General Description
This device has the lowest QRR of any 150 V
Silicon diode. Its recovery characteristics
increase efficiency, reduce EMI and eliminate
snubbers.
Applications
AC/DC and DC/DC output rectification
Output and freewheeling diodes
Motor drive circuits
DC-AC inverters
Features
Low QRR, Low IRRM, Low tRR
High dIF/dt capable
Soft recovery
Benefits
Increases efficiency
Eliminates need for snubber circuits
Reduces EMI filter component size and count
Enables extremely fast switching
Absolute Maximum Ratings
Absolute maximum ratings are the values beyond which the device may be damaged or have its useful life impaired. Functional
operation under these conditions is not implied.
Symbol
Parameter
Conditions
Rating
VRRM
Peak repetitive reverse voltage
TJ = 25 °C
150
IF(AVG)
Average forward current
Per Diode, TJ = 150 °C, TC = 116 °C
20
Per Device, TJ = 150 °C, TC = 116 °C
40
IFSM
Non-repetitive peak surge current
Per Diode, 60 Hz, ½ cycle
170
IFSM
Non-repetitive peak surge current
Per Diode, ½ cycle of t = 28 s
Sinusoid, TC = 25 °C
350
TJ
Operating junction temperature range
–55 to 150
TSTG
Storage temperature
–55 to 150
Lead soldering temperature
Leads at 1.6mm from case, 10 sec
300
PD
Power dissipation
TC = 25 °C
65.8
Thermal Resistance
Symbol
Resistance from:
Conditions
Rating
Units
RJA
Junction to ambient
TO-220AB (only)
62
°C/W
RJC
Junction to case
Per Diode
1.9
°C/W
Per Device
1.0
°C/W
Pin Assignment
A1 K
A2
A1 K
A2
www.power.com Rev 1.0 12/14
LQA40T150C, LQA40B150C
2
Electrical Specifications at TJ = 25 C (unless otherwise specified)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
DC Characteristics per diode
IR
Reverse current per diode
VR = 150 V, TJ = 25 °C
-
-
500
A
VR = 150 V, TJ = 125 °C
-
0.44
-
mA
VF
Forward voltage per diode
IF = 20 A, TJ = 25 °C
-
1.0
1.2
V
IF = 20 A, TJ = 150 °C
-
0.875
-
V
CJ
Junction capacitance per
diode
VR = 10 V, 1 MHz
-
74
-
pF
Dynamic Characteristics per diode
tRR
Reverse recovery time,
per diode
dIF/dt = 100 A/s
VR = 100 V,
IF = 20 A
TJ = 25 °C
-
16.9
-
ns
TJ = 125 °C
-
30.1
-
ns
QRR
Reverse recovery charge,
per diode
dIF/dt = 100 A/s
VR = 100 V,
IF = 20 A
TJ = 25 °C
-
10.4
25.7
nC
TJ = 125 °C
-
33.6
-
nC
IRRM
Maximum reverse
recovery current, per
diode
dIF/dt = 100 A/s
VR = 100 V,
IF = 20 A
TJ = 25 °C
-
1.03
2.35
A
TJ = 125 °C
-
1.86
-
A
S
Softness per diode =
a
b
t
t
dIF/dt = 100 A/s
VR = 100 V,
IF = 20 A
TJ = 25 °C
-
0.6
-
TJ = 125 °C
-
0.57
-
Note to component engineers: Q-Series diodes employ Schottky technologies in their design and construction.
Therefore, component engineers should plan their test setups to be similar to traditional Schottky test setups.
(For further details, see application note AN-300.)
Pulse generator Rg
Q1
VR
+
15V
D1
DUT
L1
IF
dIF/dt
IRRM
tRR
tb
ta
0
0.1xIRRM
Rev 1.0 12/14 www.power.com
LQA40T150C, LQA40B150C
3
Electrical Specifications at TJ = 25 C (unless otherwise specified)
0
5
10
15
20
25
30
35
40
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
IF (A)
VF (V)
Tj=125C
Tj=25C
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
IF (A)
VF (V)
Tj=125C
Tj=25C
0
50
100
150
200
250
300
020 40 60 80 100 120 140 160 180
Cj (pF)
VR (V)
0
5
10
15
20
25
30
35
40
45
50
55
25 50 75 100 125 150
IF(AV) (A)
Case Temperature, TC(oC)
0
5
10
15
20
25
30
35
40
45
50
0 5 10 15 20 25 30
QRR (nC)
IF(A)
dIF/dt=100A/us
0
5
10
15
20
25
30
35
40
45
50
0 5 10 15 20 25 30
tRR (ns)
IF(A)
dIF/dt=100A/us
www.power.com Rev 1.0 12/14
LQA40T150C, LQA40B150C
4
0.001
0.01
0.1
1
1.E-06 1.E-05 1.E-04 1.E-03 1.E-02 1.E-01 1.E+00
Zth(j-c)/Rth(j-c)
t1(sec)
LQA40x150C
D=0.002
D=0.005
D= 0.01
D= 0.02
D= 0.05
D= 0.1
D = 0.3
D= 0.5
Single Pulse
0
10
20
30
40
50
60
70
25 50 75 100 125 150
P (W)
Case Temperature, TC(oC)
0
5
10
15
20
25
30
35
40
45
50
55
25 50 75 100 125 150
IF(PEAK) (A)
TC(°C)
duty cycle=10%
duty cycle=50%
duty cycle=30%
DC
Rev 1.0 12/14 www.power.com
LQA40T150C, LQA40B150C
5
Dimensional Outline Drawings
TO-220AB
Mechanical Mounting Method
Maximum Torque / Pressure specification
Screw through hole in package tab
1 Newton Meter (nm) or 8.8 inch-pounds (lb-in)
Clamp against package body
12.3 kilogram-force per square centimeter (kgf/cm2) or 175 lbf/in2
TO-263AB
Millimeters
Dim
MIN
MAX
A
4.32
4.70
A1
1.11
1.38
A2
2.59
2.79
b
0.77
1.00
b2
1.23
1.36
C
0.34
0.47
D
14.71
15.75
D1
9.05
9.25
E
9.96
10.36
e
2.44
2.64
e1
4.98
5.18
L
12.70
14.22
L1
–
3.90
ØP
3.71
3.96
Q
2.54
2.90
Millimeters
Dim
MIN
MAX
A
4.40
4.70
A1
0.00
0.25
A2
2.59
2.79
b
0.77
0.90
b2
1.23
1.36
c2
1.22
1.32
D
9.05
9.25
E
10.06
10.26
e
2.54 BSC
2.54 BSC
H
14.70
15.50
L
2.00
2.60
L1
1.17
1.40
L2
–
1.75
L3
0.25 BSC
0.25 BSC
L4
2.00 BSC
2.00 BSC
Θ
0°
8°
Θ1
5°
9°
Θ2
1°
5°
c
AA1
A2
øP
E
Q
D
D1
ee1
L
L1
b
b2
c
AA1
A2
øP
E
Q
D
D1
ee1
L
L1
b
b2
www.power.com Rev 1.0 04/13
LQA40T150C, LQA40B150C
6
Soldering time and temperature: This product has been designed for use with high-
temperature, lead-free solder. The component leads can be subjected to a maximum
temperature of 300 °C, for up to 10 seconds. See Application Note AN-303, for more
details.
Ordering Information
Part Number
Package
Packing
LQA40T150C
TO-220AB
50 units/tube
LQA40B150C
TO-263AB
800 units/reel
The information contained in this document is subject to change without notice.
Rev 1.0 12/14 www.power.com
LQA40T150C, LQA40B150C
7
Revision
Notes
Date
1.0
Initial Release
12/14
www.power.com Rev 1.0 04/13
LQA40T150C, LQA40B150C
8
For the latest updates, visit our website: www.power.com
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manufacturability. Power Integrations does not assume any liability arising from the use of any device or circuit
described herein. POWER INTEGRATIONS MAKES NO WARRANTY HEREIN AND SPECIFICALLY DISCLAIMS ALL
WARRANTIES INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF THIRD PARTY RIGHTS.
PATENT INFORMATION
The products and applications illustrated herein (including transformer construction and circuits’ external to the
products) may be covered by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent
applications assigned to Power Integrations. A complete list of Power Integrations’ patents may be found at
www.power.com. Power Integrations grants its customers a license under certain patent rights as set forth at
http://www.power.com/ip.htm.
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