Extended
Voltage Range
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.
Dimensions in inches
and (millimeters)
DO-204AL (DO-41 Plastic)
Devices for Bidirectional Applications
For bi-directional, use C or CA suffix for types P4KE6.8 thru types P4KE440
(e.g. P4KE6.8C, P4KE440CA). Electrical characteristics apply in both directions.
Maximum Ratings and Characteristics
(T
A
= 25°C unless otherwise noted)
Parameter
Symbol
Limit
Unit
Peak power dissipation with a 10/1000
µ
s waveform
(1)
(Fig. 1)
P
PPM
400
W
Peak pulse current wih a 10/1000
µ
s waveform
(1)
I
PPM
See Next Table
A
Steady state power dissipation
P
M(AV)
1.0
W
at T
L
= 75
°
C, lead lengths 0.375" (9.5mm)
(2)
Peak forward surge current, 8.3ms
I
FSM
40
A
single half sine-wave unidirectional only
(3)
Maximum instantaneous forward voltage
V
F
3.5/5.0
V
at 25A for unidirectional only
(4)
Typical thermal resistance junction-to-lead
R
JL
60
°C/W
Typ. thermal resistance junction-to-ambient, L
Lead
= 10mm
R
JA
100
°C/W
Operating junction and storage temperature range
T
J
, T
STG
55 to +175
°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) Measured on 8.3ms single half sine-wave or equivalent square wave, duty cycle = 4 pulses per minute maximum
(4) V
F
= 3.5V for P4KE220(A) & below; V
F
= 5.0V for P4KE250(A) & above
V
(BR)
Unidirectional 6.8 to 540V
V
(BR)
Bidirectional 6.8 to 440V
Peak Pulse Power 400W
Features
· Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
· Glass passivated junction
· 400W peak pulse power capabililty on 10/1000
µ
s wave-
form, repetition rate (duty cycle): 0.01%
· Excellent clamping capability
· Low incremental surge resistance
· Very fast response time
Mechanical Data
Case: JEDEC DO-204AL molded plastic body over
passivated junction
Terminals: Axial leads, solderable per
MIL-STD-750, Method 2026
High temperature soldering guaranteed: 265
°
C/10 seconds,
0.375" (9.5mm) lead length, 5lbs. (2.3 kg) tension
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: 0.012 oz., 0.3 g
Packaging Codes Options (Antistatic):
51 1K per Bulk box, 10K/carton
54 5.5K per 13" paper Reel
(52mm horiz. tape), 16.5K/carton
73 3K per horiz. tape & Ammo box, 30K/carton
T
RANS
Z
ORB
®
Transient Voltage Suppressors
P4KE Series
Vishay Semiconductors
formerly General Semiconductor
Document Number 88365
www.vishay.com
09-Oct-02
1
0
25
50
75
100
0
75
25
50
100
125
150
175
200
Peak Pulse Power (P
PP
)
or Current (I
PPM
)
Derating in Percentage, %
T
A
-- Ambient Temperature (
°
C)
1
5
10
50
100
Fig. 2 Pulse Derating Curve
I
FSM
-
-
Peak Forward
Surge Current (A)
Number of Cycles at 60 Hz
C
J
-
-
Junction Capacitance
10
100
1,000
10,000
1.0
10
100
200
V
(BR)
-- Breakdown Voltage (V)
10
50
100
200
Fig. 4 Typ. Junction Capacitance Uni-Directional
0.1
µ
s
1.0
µ
s
10
µ
s
100
µ
s
1.0ms
10ms
P
PPM
--
Peak Pulse Power (kW)
100
10
1
0.1
td -- Pulse Width (sec.)
Fig. 5 Steady State Power Derating Curve
0
75
25
100
125
150
175
200
50
0
0.25
0.50
0.75
1.00
PM
(A
V)
, Steady State Power
Dissipation (W)
1.6 x 1.6 x .040"
(40 x 40 x 1mm)
Copper Heat Sinks
T
L
-- Lead Temperature (
°
C)
Fig. 7 Typical Reverse Leakage Characteristics
I
D
--
Instantaneous Reverse
Leakage Current (
µ
A)
0.01
0.1
1
10
100
0
100
200
V
(BR)
-- Breakdown Voltage (V)
300
400
500
600
60 HZ Resistive or
Inductive Load
L = 0.375" (9.5mm)
Lead Lengths
Fig. 1 Peak Pulse Power Rating Curve
Non-repetitive Pulse
Waveform shown in Fig. 3
T
A
= 25
°
C
Measured at
Stand-Off
Voltage, V
WM
Measured at Zero Bias
T
J
= 25
°
C
f = 1.0MHz
Vsig = 50mVp-p
T
ransient Thermal
Impedance
(
°
C/W)
10
100
1
0.001
t
p
-- Pulse Duration (sec)
0.01
0.1
1
10
100
1000
Fig. 8 Typ. Transient Thermal Impedance
Fig. 6 - Max. Non-Repetitive Forward Surge Current
Uni-Directional Only
T
J
= T
J
max.
8.3ms Single Half Sine-Wave
(JEDEC Method)
td
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
0
1.0
2.0
3.0
4.0
t -- Time (ms)
0
50
100
150
I
PPM
--
Peak Pulse Current,
% I
RSM
tr = 10
µ
sec.
Half Value -- I
PPM
2
10/1000
µ
sec. Waveform
as defined by R.E.A.
Peak Value
I
PPM
Measured at Devices
Stand-off Voltage, V
WM
T
A
= 25
°
C
Ratings and
Characteristic Curves
(T
A
= 25°C unless otherwise noted)
P4KE Series
Vishay Semiconductors
formerly General Semiconductor
www.vishay.com
Document Number 88365
4
09-Oct-02
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