FM345F
SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER
VOLTAGE 45 Volts CURRENT 3.0 Amperes
FEATURES
*
*
*
*
Ideal for surface mounted applications
Low leakage current
Metallurgically bonded construction
Mounting position: Any
.157(4.05)
.134(3.40)
MECHANICAL DATA
* Epoxy: Device has UL flammability classification 94V-O
.065(1.65)
.049(1.25)
.11(2.80)
.094(2.40)
5 - 2
0
+
.006(0.15)
.004(0.11)
M A X 1.05
0
.213(5.40)
.189(4.80)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
o
C ambient temperature unless otherwise specified.
Single phase, resistive or inductive load.
.043(1.10)
.028(0.70)
Dimensions in inches and (millimeters)
MAXIMUM RATINGS
(@ T
A
=25
O
C unless otherwise noted)
RATINGS
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Max Avg Forword Rectify Current at Ambient Temp needs
o
To be corrected to Lead Temperature,TL=100 C
Peak Forward Surge Current 8.3 ms single half sine-wave
superimposed on rated load (JEDEC method)
Typical Current Square Time
Typical Thermal Resistance (Note 1)
Typical Junction Capacitance (Note 2)
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
RRM
V
RMS
V
DC
I
O
I
FSM
I
2
T
R
θ
JA
R
θ
JL
C
J
T
J
T
STG
FM345F
UNITS
Volts
Volts
Volts
Amps
Amps
A
2
S
0
45
31.5
45
3.0
80
26.5
55
17
200
150
-55 to + 150
C/W
pF
0
0
C
C
ELECTRICAL CHARACTERISTICS
(@T
A
=25
O
C unless otherwise noted)
CHARACTERISTICS
Maximum Instantaneous Forward Voltage at 3.0A DC
Maximum Average Reverse Current
at Rated DC Blocking Voltage
@T
A
= 25
o
C
@T
A
= 100 C
o
SYMBOL
V
F
I
R
FM345F
UNITS
Volts
mA
mA
2013-01
REV: O
.65
0.2
2
NOTES : 1. Thermal Resistance : Mounted on PCB.
2. Measured at 1 MHz and applied reverse voltage of 4.0 volts.
3. “Fully ROHS compliant”, “100% Sn plating (Pb-free)”.
4. Available in Halogen-free epoxy by adding suffix -HF after the part no
RATING AND CHARACTERISTICS CURVES ( FM345F )
3.0
2.5
2.0
1.5
1.0
0.5
0
0
25
50
75
100
O
INSTANTANEOUS REVERSE CURRENT, (mA)
AVERAGE FORWARD CURRENT, (A)
10
T
A
= 100
O
C
1.0
T
A
= 75
O
C
0.1
T
A
= 25
O
C
0.01
125
150
0.001
0
20
40
60
80
100
120
140
LEAD TEMPERATURE, ( C)
PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)
INSTANTANEOUS FORWARD CURRENT, (A)
10
C
J
, JUNCTION CAPACITANCE, (pF)
20
FIG.1 TYPICAL FORWARD CURRENT
DERATING CURVE
500
200
100
50
20
10
5
0.1
0.2
FIG.2 TYPICAL REVERSE
CHARACTERISTICS
T
J
= 25
O
C
1.0
0.1
T
J
= 25
O
C
Pulse width=300µS
1% Duty Cycle
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0.5
1
2
5
10
20
40
INSTANTANEOUS FORWARD VOLTAGE, (V)
REVERSE VOLTAGE, (V)
FIG.3 TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
PEAK FORWARD SURGE CURRENT, (A)
FIG.4 TYPICAL JUNCTION CAPACITANCE
80
70
60
50
40
30
20
10
1
2
5
At rated T
L
8.3mS Single Half Sine-Wave
JEDEC Method
10
20
50
100
NUMBER OF CYCLES AT 60Hz
FIG.5 MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
DISCLAIMER NOTICE
Rectron Inc reserves the right to make changes without notice to any product
specification herein, to make corrections, modifications, enhancements or other
changes. Rectron Inc or anyone on its behalf assumes no responsibility or liabi-
lity for any errors or inaccuracies. Data sheet specifications and its information
contained are intended to provide a product description only. "Typical" paramet-
ers which may be included on RECTRON data sheets and/ or specifications ca-
n and do vary in different applications and actual performance may vary over ti-
me. Rectron Inc does not assume any liability arising out of the application or
use of any product or circuit.
Rectron products are not designed, intended or authorized for use in medical,
life-saving implant or other applications intended for life-sustaining or other rela-
ted applications where a failure or malfunction of component or circuitry may di-
rectly or indirectly cause injury or threaten a life without expressed written appr-
oval of Rectron Inc. Customers using or selling Rectron components for use in
such applications do so at their own risk and shall agree to fully indemnify Rect-
ron Inc and its subsidiaries harmless against all claims, damages and expendit-
ures.
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