P4KE6.8 thru P4KE550CA
Transient Voltage Suppressors
Peak Pulse Power 400W Breakdown Voltage 6.8 to 550V
Features
ꢀ Plastic package has Underwriters Laboratory Flammability
Classification 94V-0
ꢀ Glass passivated junction
ꢀ 400W peak pulse power capabililty on 10/1000uS waveform,
repetition rate (duty cycle): 0.01%
ꢀ Excellent clamping capability
ꢀ Low incremental surge resistance
ꢀ Very fast response time
ꢀ High temperature soldering guaranteed: 265oC/10 seconds,
0.375” (9.5mm) lead length, 5lbs. (2.3 kg) tension
Mechanical Data
ꢀ Case: JEDEC DO-204AL(DO-41) molded plastic body over
passivated junction
ꢀ Terminals: 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: 0.012oz., 0.3g
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
(TA=25oC unless otherwise noted)
Parameter
Symbol
Value
Unit
Peak power dissipation with a 10/1000us waveform (1)
(Fig. 1)
PPPM
IPPM
Minimum 400
See Next Table
1.0
W
A
Peak pulse current with a 10/1000us waveform (1)
Steady state power dissipation
PM(AV)
W
at TL=75oC, lead lengths 0.375" (9.5mm) (2)
Peak forward surge current, 8.3ms
IFSM
VF
40
A
single half sine-wave unidirectional only (3)
Maximum instantaneous forward voltage
at 25A for unidirectional only (4)
3.5/5.0
Volts
Typical thermal resistance junction-to-lead
RθJL
RθJA
60
100
oC/W
oC/W
oC
Typ. thermal resistance junction-to-ambient, LLead=10mm
Operating junction and storage temperature range
TJ, TSTG
-55 to +175
Notes:
1. Non-repetitive current pulse, per Fig.3 and derated above TA=25oC 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. VF=3.5 V for devices of V(BR) 220V, and VF=5.0 Volt max. for devices of V(BR)>220V
565