1.5KA6.8 thru 1.5KA43A
Vishay Semiconductors
formerly General Semiconductor
Document Number 88300
www.vishay.com
08-Oct-02
1
Automotive Transient Voltage Suppressors
Breakdown Voltage
6.8 to 43V
Peak Pulse Power
1500W
Features
Designed for under the hood applications
Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
1500W peak pulse power surge capability with a
10/1000ms waveform, repetition rate (duty cycle): 0.01%
Exclusive patented PAR
oxide passivated chip construction
Excellent clamping capability
Low incremental surge resistance
Fast response time
For devices with V
(BR)
D10V I
D
are typically less than
1.0mA at T
A
= 150C
High temperature soldering guaranteed: 300C/10 seconds,
0.375" (9.5mm) lead length, 5lbs. (2.3 kg) tension
Mechanical Data
Case: Molded plastic over passivated junction
Terminals: Solder plated axial leads, solderable per MIL-
STD-750, Method 2026
Polarity: For unidirectional types the color band denotes
the cathode, which is positive with respect to the anode
under normal TVS operation
Mounting Position: Any
Weight: 0.045 oz., 1.2 g
Packaging codes/options:
1/1.5K per Bulk Box, 15K/box
4/1.4K per 13" Reel (52mm Tape), 5.6K/box
23/1K per Ammo Box (52mm Tape), 9K/box
Maximum Ratings and Thermal Characteristics
(T
A
= 25C unless otherwise noted)
Parameter
Symbol
Limit
Unit
Peak pulse power dissipation
P
PPM
Minimum 1500
W
with a 10/1000
s waveform
(1)
(Fig. 1)
Peak pulse current at T
A
= 25C
I
PPM
See Next Table
A
with a 10/1000
s waveform
(1)
(Fig. 3)
Steady state power dissipation at T
L
= 75C
P
M(AV)
5.0
W
lead lengths 0.375" (9.5mm)
(2)
Peak forward surge current, 8.3ms single half sine-wave
(3)
I
FSM
200
A
Maximum instantaneous forward voltage at 100A
(3)
V
F
3.5
V
Operating junction and storage temperature range
T
J
, T
STG
65 to +185
C
Notes: (1) Non-repetitive current pulse, per Fig. 3 and derated above T
A
= 25C per Fig. 2
(2) Mounted on copper pad area of 1.6 x 1.6" (40 x 40mm) per Fig. 5
(3) 8.3ms single half sine-wave or equivalent square wave, duty cycle = 4 pulses per minutes maximum
1.0 (25.4)
MIN.
1.0 (25.4)
MIN.
0.375 (9.5)
0.285 (7.2)
0.210 (5.3)
0.190 (4.8)
DIA.
0.042 (1.07)
0.038 (0.96)
DIA.
Available in uni-directional only
Dimensions in inches and (millimeters)
*
Patent #'s 4,980,315
5,166,769
5,278,094
Case Style 1.5KA
Patented*
1.5KA6.8 thru 1.5KA43A
Vishay Semiconductors
formerly General Semiconductor
Document Number 88300
www.vishay.com
08-Oct-02
3
Ratings and
Characteristic Curves
(T
A
= 25C unless otherwise noted)
0
25
50
75
100
0
75
25
50
100
125
150
175
200
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage, %
T
A
-- Ambient Temperature (
C)
1
10
100
Fig. 2 Pulse Derating Curve
P
PPM
--
Peak Pulse Power (kW)
Fig. 1 Peak Pulse Power Rating Curve
0.1
1.0
10
100
0.1
s
1.0
s
10
s
td -- Pulse Width (sec.)
100
s
1.0ms
10ms
Fig. 5 Steady State Power
Derating Curve
Non-repetitive Pulse
Waveform shown in Fig. 3
T
A
= 25
C
Fig. 6 - Maximum Non-Repetitive /Peak
Forward Surge Current
I
FSM
--
Peak Forward Surge Current (A)
Number of Cycles at 60H
Z
C
J
--
Junction Capacitance (pF)
100
1,000
10,000
20,000
10
1.0
100
V
(BR)
-- Breakdown Voltage (V)
T
J
= 25
C
f = 1.0MHz
Vsig = 50mVp-p
10
100
200
T
L
= 75
C
8.3ms Single Half Sine-Wave
(JEDEC Method)
Measured at
Stand-Off
Voltage, V
WM
Measured at
Zero Bias
0
1.25
2.5
3.75
5.0
0
75
25
100
125
150
175
200
PM
(A
V)
, Steady State Power Dissipation (W)
0.8 x 0.8 x 0.040"
(20 x 20 x 1mm)
Copper Heat Sinks
Fig. 4 Typical Junction Capacitance
Unidirectional
T
L
-- Lead Temperature (
C)
50
60H
Z
Resistive
or Inductive Load
0
50
100
150
I
PPM
--
Peak Pulse Current, % I
RSM
Fig. 3 Pulse Waveform
T
J
= 25
C
Pulse Width (td)
is defined as the point
where the peak current
decays to 50% of I
PPM
tr = 10
sec.
Peak Value
I
PPM
Half Value -- IPP
I
PPM
2
td
10/1000
sec. Waveform
as defined by R.E.A.
0
1.0
2.0
3.0
4.0
t -- Time (ms)
L = 0.375" (9.5mm)
Lead Lengths
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