Radial Lead Transient Voltage Suppressors (TVS)
KA Series
Description
The KA Series of high current transient suppressors have been specially
designed for use in A.C. line protection and any demanding applications
(AC or DC). Any voltage rise due to increased current conduction is
contained to a minimum, providing the best possible protection level. They
can also be connected in series and/or parallel to create very high capacity
protection solutions.
3KA
Bi-directional
Features
u
u
u
u
u
u
u
u
u
u
u
u
u
Axial lead terminals
High current transient suppressor
Excellent Clamping Capability
Glass Passivated Junction
Bi-directional
Low Slope Resistance
Repetition Rate (duty cycle):0.01%
Hazardous Substances Free
RoHS Compliant
High Temperature soldering: 260°C/10 seconds at terminals
Epoxy Encapsulated
Silver plated leads
Solderable per MIL-STD-202 Method 208
Functional Diagram
Bi-directional
Maximum Ratings
(T
A
=25℃ unless otherwise noted)
Parameter
Symbol
T
J
T
STG
I
PP
Value
-55 to +150
-55 to +150
3
Unit
°C
°C
KA
Operating junction
Storage Temperature Range
Current Rating
1
Notes:
1. Rated IPP measured with 8
×
20μs pulse.
Electrical Characteristics
(T
A
=25℃ unless otherwise noted)
Breakdown
Voltage
V
BR
(V)
MIN.@I
T
64
85
401
440
Test
Current
I
T
(mA)
10
10
10
10
Current
Rating
I
PP
8/20μs (KA)
3
3
3
3
Maximum
Clamping
Voltage
V
C
(V)
@I
PP
110
140
520
625
Reverse
Leakage
I
R
(μA)
@VDC
20
20
20
20
Part Number
Reverse Stand-Off
Voltage
VAC(V)
VDC(V)
58
76
380
430
KA-058
KA-076
KA-380
KA-430
40
54
275
310
UN Semiconductor Co., Ltd.
Revision
October 18, 2013
www.unsemi.com.tw
1/3
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Radial Lead Transient Voltage Suppressors (TVS)
KA Series
3KA
Ratings and Characteristic Curves (T
A
=25°C unless otherwise noted) (Continued)
Physical Specifications
Weight
Case
Terminal
Contact manufacturer
Epoxy encapsulated
Silver plated leads, solderable
MIL-STD-750, Method 2026
per
Soldering Parameters
T
P
Ramp-up
Critical Zone
T
L
to T
P
Reflow Condition
-Temperature Min (T
s(min)
)
Pre Heat
Ramp-down
Lead–free assembly
150°C
200°C
60 -180 Seconds
3°C/second max
3°C/second max
217°C
60 -150 Seconds
260 +0/-5°C
of
actual
peak
20 -40 Seconds
6°C/second max
8 minutes Max
280°C
T
L
Temperature
T
S(max)
-Temperature Max (T
s(max)
)
- Time (min to max) (t
s
)
T
S(min)
Preheat
Average ramp up rate ( Liquidus Temp T
L
)
to peak
T
S(max)
to TL - Ramp-up Rate
25
Time to peak temperature
(t 25℃ to peak)
Time
Reflow
- Temperature (T
L
) (Liquidus)
- Time (min to max) (t
s
)
Flow/Wave Soldering (Solder Dipping)
Peak Temperature :
Dipping Time :
Soldering :
265°C
10 seconds
Peak Temperature (T
P
)
Time within 5°C
Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
1 time
Do not exceed
Ratings and Characteristic Curves (TA=25°C unless otherwise noted)
Pulse Derating Curve
100
Peak Pulse Derating in Percentage
of Peak Power or Current (%)
80
60
40
20
0
0
25
50
75
100 125 150
T
A
-Ambient temperature(°C)
175
200
UN Semiconductor Co., Ltd.
Revision
October 18, 2013
www.unsemi.com.tw
2/3
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Radial Lead Transient Voltage Suppressors (TVS)
KA Series
Dimensions
Dimensions
A
B
C
D
E
F
Inches
max 0.571
Max0.500
Φ0.051±0.004
0.236±0.040
0.950±0.028
max 0.10
Millimeters
max 14.5
max 12.7
Φ1.30±0.1
6.0±1.0
24.15±0.7
max 2.5
3KA
Part Numbering
KA -
×××
Stand Off Voltage
Series
UN Semiconductor Co., Ltd.
Revision
October 18, 2013
www.unsemi.com.tw
3/3
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
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