Datasheet

UNISONIC TECHNOLOGIES CO., LTD
BTA308A
TRIAC
8A TRIACS

DESCRIPTION
The UTC BTA308A is a 8A triacs which can be operated in 3
quadrants, it uses UTC’s advanced technology to provide
customers with high commutation performances, etc.
The UTC BTA308A is suitable for inductive load switching
operations, also can be used in ON/OFF function applications such
as induction motor starting circuits, heating regulation, static relays
etc.

SYMBOL

ORDERING INFORMATION
Ordering Number
Package
Lead Free
Halogen Free
BTA308AL-x-xx-TF3-T
BTA308AG-x-xx-TF3-T
TO-220F
BTA308AL-x-xx-TF1-T
BTA308AG-x-xx-TF1-T
TO-220F1
Note: Pin Assignment: MT1: MT1 MT2: MT2 G: Gate

Packing
Tube
Tube
SENSITIVITY AND TYPE
PART NUMBER
BW
CW
SW
TW
◎: Available

Pin Assignment
1
2
3
MT1 MT2
G
MT1 MT2
G
VOLTAGE
600V
◎
◎
◎
◎
800V
◎
◎
◎
◎
SENSITIVITY
TYPE
50mA
35mA
10mA
5mA
SNUBBERLESS
SNUBBERLESS
LOGIC LEVEL
LOGIC LEVEL
MARKING
www.unisonic.com.tw
Copyright © 2016 Unisonic Technologies Co., Ltd
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BTA308A

TRIAC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RMS On-State Current (Full Sine Wave)
Non Repetitive Surge Peak On-State
Current (Full Cycle TJ initial=25°C)
SYMBOL
IT(RMS)
TC=100°C
F=50Hz
t=20ms
RATINGS
8
UNIT
A
80
A
ITSM
F=60Hz t=16.7ms
84
I2t Value for Fusing
tP=10ms
I2 t
36
Critical Rate of Rise of On-State Current:
F=120Hz TJ=125°C
dI/dt
50
IG=2xIGT, tr≤100ns
Peak Gate Current
tP=20µs TJ=125°C
IGM
4
Average Gate Power Dissipation
TJ=125°C
PG(AV)
1
Operating Junction Temperature
TJ
-40~+125
Storage Junction Temperature
TSTG
-40~+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/µs
A
W
°C
°C
THERMAL RESISTANCES
PARAMETER
Junction to Ambient
Junction to Case (AC)

A
A2s
SYMBOL
θJA
θJC
RATINGS
60
2.5
UNIT
°C/W
°C/W
ELECTRICAL CHARACTERISTICS (TJ= 25°C, unless otherwise specified)
FOR SNUBBERLESS AND LOGIC LEVEL (3 QUADRANTS)
TEST
TW
SW
CW
BW
UNIT
PARAMETER SYMBOL
CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX
Gate Trigger
IGT
I-II-III
5
10
35
50 mA
Current (Note 1)
VD=12V
RL=30Ω
Gate Trigger
VGT
I-II-III
1.3
1.3
1.3
1.3
V
Voltage
VD=VDRM,
Gate Non-Trigger
VGD
RL=3.3kΩ, I-II-III 0.2
0.2
0.2
0.2
V
Voltage
TJ=125°C
Holding Current
IH
IT=100mA
10
15
35
50 mA
(Note 2)
I-III
10
25
50
70 mA
Latching Current
IL
IG=1.2IGT
II
15
30
60
80 mA
Critical Rate of
VD=67%VDRM,
Rise of Off-State
dV/dt Gate Open,
20
40
400
1000
V/µs
Voltage(Note 2)
TJ=125°C
Critical Rate of
Rise of Off-State
Voltage at
Commutation
(Note 2)
(dV/dt)c=0.1V/µs,
3.5
TJ=125°C
(dI/dt)c (dV/dt)c=10V/µs,
TJ=125°C
1.5
Without Snubber
TJ= 125°C
Notes: 1. Minimum IGT is guaranteed at 5% of IGT max.
2. For both polarities of MT2 referenced to MT1.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5.4
A/ms
2.98
A/ms
4.5
7
A/ms
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
TRIAC
STATIC CHARACTERISTICS
PARAMETER
Peak On-State Voltage (Note 1)
Threshold Voltage (Note 2)
Dynamic Resistance (Note 2)
SYMBOL
TEST CONDITIONS
VTM
ITM=11A, tp=380μs
TJ=25°C
VTO
TJ=125°C
RD
TJ=125°C
IDRM
TJ=25°C
VDRM=VRRM
Repetitive Peak Off-State Current
IRRM
TJ=125°C
Note: 1. Minimum IGT is guaranteed at 5% of IGT max.
2. For both polarities of MT2 referenced to MT1.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
TYP MAX UNIT
1.55
V
0.85
V
50
mΩ
5
μA
1
mA
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BTA308A

TRIAC
TYPICAL CHARACTERISTICS
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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