Datasheet

UNISONIC TECHNOLOGIES CO., LTD
SK34
DIODE
SURFACE MOUNT SCHOTTKY
BARRIER RECTIFIER
+
-
SMA
(JEDEC DO-214AC)

DESCRIPTION
The UTC SK34 is a Schottky Rectifier with high current capacity,
ultra low thermal resistance, Low reverse leakage and low forward
voltage.
The UTC SK34 is suitable for surface mount applications.

SMB
(JEDEC DO-214AA)
+
-
SMC
(JEDEC DO-214AB)
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
SK34L-SMA-R
SK34G-SMA-R
SK34L-SMB-R
SK34G-SMB-R
SK34L-SMC-R
SK34G-SMC-R
Note: Pin Assignment: A: Anode, K: Cathode
SK34L-SMA-R

-
FEATURES
* High Current Capability
* Low Forward Voltage
* Low Reverse Leakage

+
Package
SMA
SMB
SMC
Pin Assignment
1
2
K
A
K
A
K
A
Packing
Tape Reel
Tape Reel
Tape Reel
(1)Packing Type
(1) R: Tape Reel
(2)Package Type
(2) SMA: SMA, SMB: SMB, SMC: SMC
(3)Green Package
(3) L: Lead Free, G: Halogen Free and Lead Free
MARKING
Cathode Band for
uni-directional Only
UTC
SK34
Date Code
L: Lead Free
G: Halogen Free
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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QW-R601-044.E
SK34

DIODE
ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified)
PARAMETER
Peak Repetitive Reverse Voltage
RMS Voltage
DC Blocking Voltage
SYMBOL
VRRM
VRMS
RATINGS
40
28
UNIT
V
V
VDC
40
V
Average Forward Rectified Current
IO
3.0
Peak Forward Surge Current 8.3ms Single Half
Sine-Wave Superimposed On Rated Load
IFSM
100
(JEDEC Method)
Operating Temperature
TJ
-65~+150
Storage Temperature
TSTG
-65~+150
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.

A
°C
°C
THERMAL DATA
PARAMETER
Junction to Ambient (Note)
Note: 8.0mm2 (0.13mm thick) land pads.

A
SYMBOL
θJA
RATINGS
60
UNIT
°C/W
ELECTRICAL CHARACTERISTICS (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
Instantaneous Forward Voltage at 3.0A (Note 1)
VF
DC Reverse Current at Rated DC TA=25°C
IR
Blocking Voltage (Note 1)
TA=100°C
Typical Total Capacitance (Note 2)
CT
Notes: 1. Pulse Test Pulse Width 300μS, Duty Cycle 2%.
2. Measured at 1.0MHz and applied reverse voltage of 4.0V.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
RATINGS
0.50
0.5
20
300
UNIT
V
mA
mA
pF
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SK34
DIODE
TYPICAL CHARACTERISTICS

Instantaneous Forward Current, IF (A)
Peak Repetitive Reverse Voltage
Reverse Current, IR (µA)
700
600
500
400
300
200
100
0
0 10
20 30 40 50 60 70
Peak Repetitive Reverse Voltage, VRRM (V)
Typical Forward Characteristics
IF Pulse
Width=300uS
25°C
1.0
0.1
1.0
0.4
0.2
0.6
0.8
Instantaneous Forward Voltage, VF (V)
Typical Reverse Characteristics
1E-1
3.0
2.5
2.0
1.5
1.0
0.5
0
25
50
75
100 125 150 175
Case Temperature, TC (°C)
Instantaneous Reverse Current, IR (A)
Average Rectified Current, IO (A)
10
Forward Derating Curve
3.5
0.0
100
1E-2
1E-3
1E-4
1E-5
1E-6
VR=40V
Pulse
1E-7 Width=300uS
25
50
100
125
150
75
Case Temperature, TC (°C)
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
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