1N6845U3
45 Volts, 30 Amp Schottky Rectifier
Ceramic Surface Mount
Qualified per MIL-PRF-19500/682
DESCRIPTION
This low-profile 1N6845U3 Schottky rectifier device is military qualified up to a JANTXV level
for high-reliability applications.
Qualified Levels:
JAN, JANTX, and
JANTXV
Compliant
Important:
For the latest information, visit our website
http://www.microsemi.com.
FEATURES
•
•
•
•
Surface mount equivalent of JEDEC registered 1N6845.
Low profile ceramic SMD.
JAN, JANTX, JANTXV qualifications available per MIL-PRF-19500/682.
RoHS compliant by design.
U3 (SMD-0.5)
Package
APPLICATIONS / BENEFITS
•
•
•
•
High surge rating.
Low reverse leakage current.
Low forward voltage.
Low power losses.
MAXIMUM RATINGS
@ T
C
= +25 C unless otherwise noted
Parameters/Test Conditions
Junction and Storage Temperature
Thermal Resistance Junction-to-Case
Working Peak Reverse Voltage
(1)
Average Rectified Output Current @ T
C
= +55 °C
Non-Repetitive Sinusoidal Surge Current @ t
p
= 8.3 ms
Note:
o
Symbol
T
J
and T
STG
R
ӨJC
V
RWM
I
O
I
FSM
Value
-65 to +150
2.0
45
30
300
Unit
C
o
C/W
V
A
A
o
MSC – Lawrence
6 Lake Street,
Lawrence, MA 01841
Tel: 1-800-446-1158 or
(978) 620-2600
Fax: (978) 689-0803
MSC – Ireland
Gort Road Business Park,
Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044
Fax: +353 (0) 65 6822298
Website:
www.microsemi.com
1. Derate I
O
as shown in
Figure 2
where derating starts at T
C
= +55 °C for rated V
RWM
. Higher
temperature derating curves also apply to progressively lower voltages as shown.
T4-LDS-0128, Rev. 3 (6/13/13)
©2013 Microsemi Corporation
Page 1 of 4
1N6845U3
MECHANICAL and PACKAGING
•
•
•
•
•
•
CASE: Ceramic and gold over nickel plated steel.
TERMINALS: Gold over nickel plated tungsten/copper.
MARKING: Part number, date code, A = anode.
POLARITY: See
schematic
on last page.
WEIGHT: Approximately 0.9 grams.
See
Package Dimensions
on last page.
PART NOMENCLATURE
JAN
Reliability Level
JAN = JAN Level
JANTX = JANTX Level
JANTXV = JANTXV Level
Blank = Commercial
JEDEC type number
(see
Electrical Characteristics
table)
1N6845
U3
SMD-0.5 Surface Mount
Symbol
C
J
I
F
I
R
T
J
V
F
V
R
SYMBOLS & DEFINITIONS
Definition
Junction Capacitance: The junction capacitance in pF at a specified frequency (typically 1MHz) and specified voltage.
Forward Current: The forward current dc value, no alternating component.
Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and temperature.
Junction Temperature: The temperature of a semiconductor junction.
Forward Voltage: The forward voltage the device will exhibit at a specified current (typically shown as maximum
value).
Reverse Voltage: The reverse voltage dc value, no alternating component.
ELECTRICAL CHARACTERISTICS
@ T
C
= +25 C unless otherwise noted
Parameters / Test Conditions
Forward Voltage*
I
F
= 10 A (pk)
I
F
= 20 A (pk)
I
F
= 40 A (pk)
o
I
F
= 10 A (pk),
T
C
= +100 C
I
F
= 20 A (pk), T
C
= +100 °C
I
F
= 10 A (pk), T
C
= -55 °C
Reverse Current
V
R
= 45 V
V
R
= 45 V, T
C
= +100 °C
Junction Capacitance
V
R
= 5 V
f = 1 MHz
V
SIG
= 50 mV (p-p)
* Pulse test: Pulse width 300 µsec, duty cycle 2%.
T4-LDS-0128, Rev. 3 (6/13/13)
©2013 Microsemi Corporation
o
Symbol
Min.
Max.
0.65
0.72
0.86
0.55
0.67
0.78
0.1
10.0
800
Unit
V
F
V
I
R
mA
C
J
pF
Page 2 of 4
1N6845U3
GRAPHS
V
F
in volts
Forward Current in Amps
FIGURE 1
1N6845U3 Typical V
F
at I
O
Sinewave Operation Maximum Io Rating (A)
T
C
(°C) (Case)
FIGURE 2
Temperature – Current Derating Curve
T4-LDS-0128, Rev. 3 (6/13/13)
©2013 Microsemi Corporation
Page 3 of 4
1N6845U3
PACKAGE DIMENSIONS
NOTES:
1. Dimensions are in inches.
2. Millimeters are given for information only.
3. In accordance with ASME Y14.5M, diameters are equivalent to
Φx
symbology.
Symbol
BL
BW
CH
LH
LL1
LL2
LS1
LS2
LW1
LW2
Q1
Q2
Term 1
Term 2
Term 3
Schematic
DIMENSIONS
INCH
MILLIMETERS
Min
Max
Min
Max
0.395
0.405
10.03
10.29
0.291
0.301
7.39
7.65
0.112
0.124
2.84
3.15
0.010
0.020
0.25
0.51
0.220
0.230
5.59
5.84
0.115
0.125
2.92
3.18
3.81 BSC
0.150 BSC
1.91 BSC
0.075 BSC
0.281
0.291
7.14
7.39
0.090
0.100
2.29
2.54
0.030
-
0.76
-
0.030
-
0.76
-
Common Cathode
Anode (See Schematic)
Anode (See Schematic)
T4-LDS-0128, Rev. 3 (6/13/13)
©2013 Microsemi Corporation
Page 4 of 4
