P4KA6.8 THRU P4KA43A
AUTOMOTIVE TRANSIENT VOLTAGE SUPPRESSOR
Breakdown Voltage - 6.8 to 43 Volts Peak Pulse Power - 400 Watts
FEATURES
Plastic package has Underwriters Laboratory Flammability
Classification 94V-0
Designed for under the hood applications
Exclusive patented PARTM oxide passivated
chip construction
400W peak pulse power
capability with a 10/1000
s waveform,
repetition rate (duty cycle): 0.01%
Excellent clamping capability
Low incremental surge resistance
Fast response time: typically less
than 1.0ps from 0 Volts to V
(BR)
For devices with V
(BR)
10V, I
D
are typically less than
1.0
A
High temperature soldering guaranteed:
300C/10 seconds, 0.375" (9.5mm) lead length,
5lbs. (2.3 kg) tension
MECHANICAL DATA
Case: JEDEC DO-204AL molded plastic body over
passivated junction
Terminals: Plated axial leads, solderable per MIL-STD-750,
Method 2026
Polarity: Color band denotes positive end (cathode)
Mounting Position: Any
Weight: 0.012 ounce, 0.3 gram
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25C ambient temperature unless otherwise specified.
SYMBOL
VALUE
UNITS
Peak pulse power dissipation with a 10/1000
s
waveform
(NOTE 1, FIG. 1)
P
PPM
Minimum 400
Watts
Peak pulse current with a 10/1000
s waveform
(NOTE 1, FIG. 3)
I
PPM
SEE TABLE 1
Amps
Steady state power dissipation at T
L
=75C
lead lengths 0.375" (9.5mm)
(NOTE 2)
P
M(AV)
1.0
Watts
Peak forward surge current, 8.3ms single half
sine-wave superimposed on rated load
I
FSM
40.0
Amps
(JEDEC Method)
(NOTE 3)
Maximum instantaneous forward voltage at 25A
V
F
3.5
Volts
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
8/6/98
0.107 (2.7)
0.080 (2.0)
0.034 (0.86)
0.028 (0.71)
DIA.
1.0 (25.4)
MIN.
1.0 (25.4)
MIN.
0.205 (5.2)
0.160 (4.1)
DIA.
NOTE:
Lead diameter is for suffix "E" part numbers
0.026 (0.66)
0.023 (0.58)
DO-204AL
Available in unidirectional only
P
A
TENTED
*
Dimensions in inches and (millimeters)
Patent #'s 4,980,315
5,166,769
5,278,094
*
50
100
150
200
0
50
100
0
1.0
2.0
3.0
4.0
0
100
150
50
1.0
10
100 200
100
1,000
10,000
0
25
50
75
100
125
150
175
200
0
0.25
0.50
0.75
1.00
1
10
100
0
10
20
30
40
50
0.1
s
1.0
s
10
s
100
s
1.0ms
10ms
0.1
1.0
10
100
75
25
25
75
125
175
0
20,000
RATINGS AND CHARACTERISTIC CURVES P4KA6.8 THRU P4KA43A
FIG. 1 - PEAK PULSE POWER RATING CURVE
FIG. 2 - PULSE DERATING CURVE
P
PPM
, PEAK PULSE POWER, kW
td, PULSE WIDTH, sec.
T
A
, AMBIENT TEMPERATURE, C
FIG. 4 - TYPICAL JUNCTION CAPACITANCE
FIG. 3 - PULSE WAVEFORM
t, TIME, ms
FIG. 5 - STEADY STATE POWER DERATING CURVE
V
(BR)
, BREAKDOWN VOLTAGE, VOLTS
T
L,
LEAD TEMPERATURE,C
NUMBER OF CYCLES AT 60 H
Z
I
PPM
PEAK PULSE CURRENT
, %
PM
(A
V),
STEADY
ST
A
TE POWER DISSIP
A
TION,
W
A
TTS
PEAK PULSE POWER (P
PP
) or CURRENT
(I
PP
)
DERA
TING IN PERCENT
AGE, %
C
J
, JUNCTION CAP
ACIT
ANCE, pF
I
FSM,
PEAK FOR
W
ARD SURGE CURRENT
,
AMPERES
NON-REPETITIVE
PULSE WAVEFORM
SHOWN in FIG. 3
T
A
=25C
PULSE WIDTH (t
d
) is
DEFINED as the POINT
WHERE the PEAK CURRENT
DECAYS to 50% of I
PP
t
r
=10
sec.
T
J
=25C
f=1.0 MHz
Vsig=50mVp-p
MEASURED at
ZERO BIAS
MEASURED at
STAND-OFF
VOLTAGE, V
WM
1.58 x 1.58 x 0.040"
(40 x 40 x 1mm)
COPPER HEAT SINKS
=0.375" (9.5mm)
LEAD LENGTHS
T
L
=75C
8.3ms SINGLE HALF SINE-WAVE
(JEDEC Method)
td
PEAK VALUE
I
PPM
HALF VALUE - Ipp
2
10/1000
sec. WAVEFORM
as DEFINED by R.E.A.
FIG. 6 - MAXIMUM NON-REPETITIVE\PEAK
FORWARD SURGE CURRENT
L
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