US108S-4

UNISONIC TECHNOLOGIES CO., LTD
US108S/N
SCR
SCRS

DESCRIPTION
The UTC US108S/N is suitable to fit all modes of control,
found in applications such as overvoltage crowbar protection,
motor control circuits in power tools and kitchen aids, inrush
current limiting circuits, capacitive discharge ignition and voltage
regulation circuits.

SYMBOL

ORDERING INFORMATION
Ordering Number
Package
Lead Free
Halogen Free
US108SL-x-TA3-T
US108SG-x-TA3-T
TO-220
US108SL-x-TF3-T
US108SG-x-TF3-T
TO-220F
US108SL-x-TN3-R
US108SG-x-TN3-R
TO-252
US108SL-x-TQ3-T
US108SG-x-TQ3-T
TO-263-3
US108SL-x-TQ3-R
US108SG-x-TQ3-R
TO-263-3
US108NL-x-TA3-T
US108NG-x-TA3-T
TO-220
US108NL-x-TF3-T
US108NG-x-TF3-T
TO-220F
US108NL-x-TN3-R
US108NG-x-TN3-R
TO-252
US108NL-x-TQ3-T
US108NG-x-TQ3-T
TO-263-3
US108NL-x-TQ3-R
US108NG-x-TQ3-R
TO-263-3
Note: Pin Assignment: K: Cathode
A: Anode
G: Gate

1
K
K
K
K
K
K
K
K
K
K
Pin Assignment
2
3
A
G
A
G
A
G
A
G
A
G
A
G
A
G
A
G
A
G
A
G
Packing
Tube
Tube
Tape Reel
Tube
Tape Reel
Tube
Tube
Tape Reel
Tube
Tape Reel
MARKING INFORMATION
PACKAGE
MARKING
US108S
US108N
TO-220
TO-220F
TO-252
TO-263-3
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
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QW-R301-012.F
US108S/N

SCR
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATING
UNIT
400
US108S/N-4
VDRM
V
Repetitive Peak Off-State Voltages
US108S/N-6
600
VRRM
US108S/N-8
800
RMS On-State Current (180°Conduction Angle) (TC = 110°C)
IT(RMS)
8
A
Average On-State Current (180°Conduction Angle) (TC = 110°C)
IT(AV)
5
A
US108S
73
tP=8.3ms
US108N
73
Non Repetitive Surge Peak On-State
ITSM
A
Current (TJ = 25°C)
US108S
70
tP=10ms
US108N
70
US108S
24.5
I²t Value For Fusing (tP = 10 ms ,TJ = 25°C)
I²t
A²S
US108N
45
Critical Rate Of Rise Of On-State Current
dI/dt
50
A/µs
(IG = 2 x IGT , tR ≤ 100 ns, TJ = 125℃, F = 60Hz)
Peak Gate Current (tP=20μs, TJ = 125°C)
IGM
4
A
Peak Reverse Gate Voltage
US108N
VRGM
5
V
Average Gate Power Dissipation (TJ= 125°C)
PG(AV)
1
W
Junction Temperature
TJ
-40 ~ +125
°C
Storage Temperature
TSTG
-40 ~ +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
TO-220/TO-220F
TO-263-3
Junction to Ambient
TO-252
TO-220/TO-263-3
Junction to Case
TO-252

SYMBOL
RATINGS
60
θJA
θJC
UNIT
K/W
110
2.0
4.0
K/W
ELECTRICAL CHARACTERISTICS (TJ=25°C, unless otherwise specified)
US108S(SENSITIVE)
PARAMETER
Gate Trigger Current
Gate Trigger Voltage
Gate Non-Trigger Voltage
Reverse Gate Voltage
Holding Current
Latching Current
Circuit Rate Of Change Of off-State Voltage
On-State Voltage
Threshold Voltage
Dynamic Resistance
Off-State Leakage Current
SYMBOL
TEST CONDITIONS
IGT
VD = 12 V, RL =140Ω
VGT
VD = 12 V, RL=140Ω
VD = VDRM, RL = 3.3kΩ
VGD
RGK = 220 TJ = 125°C
VRG
IRG = 10 µA
IH
IT = 50mA, RGK = 1kΩ
IL
IG = 1mA , RGK = 1kΩ
dV/dt
VD = 65 % VDRM ,RGK = 220Ω
VTM
ITM = 16A, tP = 380 µs
VT0
TJ = 125°C
RD
TJ = 125°C
VDRM = VRRM, RGK = 220Ω IDRM
IRRM
VDRM = VRRM, RGK = 220Ω UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
TYP
MAX UNIT
200
µA
0.8
V
0.1
V
8
5
6
5
1.6
0.85
46
5
1
V
mA
mA
V/µs
V
V
mΩ
µA
mA
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QW-R301-012.F
US108S/N

SCR
ELECTRICAL CHARACTERISTICS(Cont.)
US108N(SENSITIVE)
PARAMETER
Gate Trigger Current
Gate Trigger Voltage
Gate Non-Trigger Voltage
Holding Current
Latching Current
Circuit Rate Of Change Of off-State Voltage
On-State Voltage
Threshold Voltage
Dynamic Resistance
Off-State Leakage Current
SYMBOL
IGT
VGT
VGD
IH
IL
dV/dt
VTM
Vt0
RD
IDRM
IRRM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
TEST CONDITIONS
VD = 12V, RL =33Ω
VD = 12V, RL=33Ω
VD = VDRM, RL = 3.3 kΩ
IT = 100mA Gate open
IG = 1.2 IGT
VD = 67 % VDRM Gate open
ITM = 16 A, tP = 380 µs
TJ = 125°C
TJ = 125°C
VDRM = VRRM
VDRM = VRRM
MIN
2
0.2
150
TYP
MAX UNIT
15
mA
1.3
V
V
30
mA
70
mA
V/µs
1.6
V
0.85
V
16
mΩ
5
µA
2
mA
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QW-R301-012.F
US108S/N
Maximum Average Power
Dissipation, P(W)
Average and D.C. On-State Current ,
IT(av)(A)
TYPICAL CHARACTERISTICS
Reverse Current, -IR (µA)

SCR
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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QW-R301-012.F