Datasheet

UNISONIC TECHNOLOGIES CO., LTD
SF18G
DIODE
GLASS PASSIVATED SUPER
FAST RECOVERY RECTIFIER

DESCRIPTION
The UTC SF18G is a glass passivated super fast rectifier, it uses
UTC’s advanced technology to provide customers with high surge
current and low forward voltage drop, etc.

FEATURES
* Low forward voltage drop
* High surge current capability
* High current capability
* High reliability

SYMBOL

ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
SF18GL-Z41-B
SF18GP-Z41-B
SF18GL-Z41-R
SF18GP-Z41-R
Note: Pin Assignment: A: Anode
K: Cathode
Package
DO-41
DO-41
Pin Assignment
1
2
K
A
K
A
Packing
Tape Box
Tape Reel
SF18GL-Z41-B

(1)Packing Type
(1) B: Tape Box, R: Tape Reel
(2)Package Type
(2) Z41: DO-41
(3)Green Package
(3) L: Lead Free, P: Halogen Free and Lead Free
MARKING
Cathode Band for uni-directional Only
SF18G
L: Lead Free
P: Halogen Free
Date Code
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
1 of 3
QW-R601-265-B
SF18G

DIODE
ABSOLUTE MAXIMUM RATINGS
Ratings at 25°C ambient temperature unless otherwise specified.
Single phase half-wave 60Hz, resistive or inductive load, for capacitive load current derate by 20%.
PARAMETER
SYMBOL
RATINGS
UNIT
Working Peak Reverse Voltage
VRWM
600
V
Repetitive Peak Reverse Voltage
VRRM
600
V
Maximum RMS Reverse Voltage
VRMS
420
V
DC Blocking Voltage
VR
600
V
Average Rectified Output Current (TA=55°C)
IO
1.0
A
Peak Forward Surge Current 8.3ms Single Half
IFSM
30
A
Sine-Wave Superimposed on Rated Load
Junction Temperature
TJ
-55~+150
°C
Storage Temperature
TSTG
-55~+150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.

THERMAL DATA
PARAMETER
Junction to Ambient (Note 2)

SYMBOL
θJA
RATINGS
50
UNIT
°C/W
ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
Single phase half-wave 60Hz, resistive or inductive load, for capacitive load current derate by 20%.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
Instantaneous Forward Voltage
VFM
IF=1.0A
1.7
V
DC Reverse Current at Rated DC Blocking
TA=25°C
5.0
μA
IRM
Voltage
TA=100°C
100 μA
Reverse Recovery Time
trr
IF=0.5A, IR=1.0A, Irr=0.25A
35
ns
Junction Capacitance (Note 1)
CJ
25
pF
Notes: 1. Measured at 1MHz and applied reverse voltage of 4.0V D.C.
2. Thermal resistance from junction to ambient at 0.375” (9.5mm) lead length, P.C.B. mounted.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 3
QW-R601-265-B
SF18G
DIODE
TYPICAL CHARACTERISTICS

Test Circuit Diagram And Reverse Recovery Time Characteristics
10Ω
50Ω
NONINDUCTIVE NONINDUCTIVE
(-)
DUT
1Ω
NON
INDUCTIVE
trr
+0.5A
OSCILLOSCOPE
(NOTE 1)
PULSE
GENERATOR
(NOTE 2)
Average Forward Current (A)
(+)
50 Vdc
(approx)
(-)
Typical Forward Current Derating Curve
0
-0.25A
(+)
-1.0A
1cm
Set Time Base For
10/15ns/cm
Notes: 1 Rise Time=7ns max. Input Impedance=1 megohm 22pF
2 Rise Time=10ns max. Source Impedance=50 ohms
1.5
1.0
0.5
0
Single Phase
Half Wave 60Hz
Resistive or
inductive Load
0.375"(9.5mm)
Lead Length
25
50
75 100 125 150 175
Ambient Temperature, TA (°C)
Typical Reverse Characteristics
1000
Maximum Non-Repetitive Forward Surge Current
TA=150°C
100
TA=125°C
10
Peak Forward Surge Current (A)
Instantaneous Reverse Current (µA)
35
1
25
20
15
10
5
1
0
20
40
60
2
5
10
20
50
100
Number of Cycles At 60Hz
TA=25°C
0.1
TA=25°C
8.3ms Single
Half Sine Wave
(JEDEC Method)
30
80
100 120 140
Percent of Rated Peak Reverse Voltage (%)
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 3
QW-R601-265-B
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