1.5KA6.8 thru 1.5KA43A
Patented*
Vishay Semiconductors
formerly General Semiconductor
Breakdown Voltage
6.8 to 43V
Peak Pulse Power
1500W
Automotive Transient Voltage Suppressors
Case Style 1.5KA
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
= 150°C
• High temperature soldering guaranteed: 300°C/10 seconds,
0.375" (9.5mm) lead length, 5lbs. (2.3 kg) tension
1.0 (25.4)
MIN.
0.210 (5.3)
0.190 (4.8)
DIA.
0.375 (9.5)
0.285 (7.2)
1.0 (25.4)
MIN.
0.042 (1.07)
0.038 (0.96)
DIA.
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
Available in uni-directional only
Dimensions in inches and (millimeters)
*
Patent #’s
4,980,315
5,166,769
5,278,094
Maximum Ratings and Thermal Characteristics
Parameter
Peak pulse power dissipation
with a 10/1000µs waveform
(1)
(Fig. 1)
Peak pulse current at T
A
= 25°C
with a 10/1000µs waveform
(1)
(Fig. 3)
Steady state power dissipation at T
L
= 75°C
lead lengths 0.375” (9.5mm)
(2)
Peak forward surge current, 8.3ms single half sine-wave
(3)
Maximum instantaneous forward voltage at 100A
(3)
Operating junction and storage temperature range
(T
A
= 25°C unless otherwise noted)
Symbol
P
PPM
I
PPM
P
M(AV)
I
FSM
V
F
T
J
, T
STG
Limit
Minimum 1500
See Next Table
5.0
200
3.5
– 65 to +185
Unit
W
A
W
A
V
°C
Notes:
(1) Non-repetitive current pulse, per Fig. 3 and derated above T
A
= 25°C 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
Document Number 88300
17-Apr-02
www.vishay.com
1
1.5KA6.8 thru 1.5KA43A
Vishay Semiconductors
formerly General Semiconductor
Ratings and
Characteristic Curves
(T
A
= 25°C unless otherwise noted)
Fig. 1 – Peak Pulse Power Rating Curve
P
PPM
— Peak Pulse Power (kW)
Non-repetitive Pulse
Waveform shown in Fig. 3
T
A
= 25°C
10
Fig. 2 – Pulse Derating Curve
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage, %
100
100
75
50
1.0
25
0.1
0.1µs
1.0µs
10µs
100µs
1.0ms
10ms
0
0
25
50
75
100
125
150
175
200
td — Pulse Width (sec.)
T
A
— Ambient Temperature (°C)
Fig. 3 – Pulse Waveform
150
20,000
tr = 10µsec.
Peak Value
I
PPM
Fig. 4 – Typical Junction Capacitance
Unidirectional
10,000
T
J
= 25°C
f = 1.0MHz
Vsig = 50mVp-p
Measured at
Zero Bias
I
PPM
— Peak Pulse Current, % I
RSM
100
Half Value — IPP
2
I
PPM
50
10/1000µsec. Waveform
as defined by R.E.A.
C
J
— Junction Capacitance (pF)
T
J
= 25°C
Pulse Width (td)
is defined as the point
where the peak current
decays to 50% of I
PPM
1,000
Measured at
Stand-Off
Voltage, V
WM
td
0
0
1.0
2.0
3.0
4.0
100
1.0
10
100
t — Time (ms)
V
(BR)
— Breakdown Voltage (V)
PM
(AV)
, Steady State Power Dissipation (W)
Fig. 5 – Steady State Power
Derating Curve
I
FSM
— Peak Forward Surge Current (A)
5.0
60H
Z
Resistive
or Inductive Load
3.75
L = 0.375" (9.5mm)
Lead Lengths
200
Fig. 6 - Maximum Non-Repetitive/Peak
Forward Surge Current
T
L
= 75°C
8.3ms Single Half Sine-Wave
(JEDEC Method)
100
2.5
0.8 x 0.8 x 0.040"
(20 x 20 x 1mm)
Copper Heat Sinks
1.25
0
10
1
10
100
0
25
50
75
100
125
150
175
200
T
L
— Lead Temperature (°C)
Document Number 88300
17-Apr-02
Number of Cycles at 60H
Z
www.vishay.com
3
Embedded System
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