1
www.littelfuse.com
1.5KE6.8 - 1.5KE440CA series
18
1500 WATT AXIAL TRANSIENT VOLTAGE SUPPRESSORS
Protect sensitive electronics against voltage transients induced by inductive load
switching and lightning. Ideal for the protection of I/O interfaces, Vcc bus, and other
integrated circuits used in telecom, computer, datacom and industrial electronics.
FEATURES
a71 Breakdown voltage range 6.8 to 440 Volts
a71 Uni-directional and Bi-directional
a71 Glass passivated junction
a71 Low clamping factor
a71 100% surge tested
a71 UL recognised
MAXIMUM RATING
a71 Peak Pulse Power (Ppk): 1500 Watts (10 x 1000µs)@25°C
(see diagram on page 6 for wave form)
a71 5 watt steady state
a71 Response time: 1 x 10
-12
seconds (theoretical)
a71 Forward surge rating: 200 Amps, 8.3ms half sine wave,
(uni-directional devices only)
a71 Operating & storage temperature: -55°C to +150°C
MECHANICAL CHARACTERISTICS
a71 Case: DO-201AD: Moulded plastic over glass passivated junction
a71 Terminals: Axial leads, solderable per MIL-STD-202 Method 208
a71 Solderable leads = 230°C for 10 seconds (1.59mm from case)
a71 Marking: cathode band, (positive terminal, uni-directional devices only),
device code, logo
a71 Weight: 1.5 grammes (approx)
Min 25.4
4.826
5.207
Min 25.4
9.155
9.527
0.966 - 1.066
1.5KE
C A
Voltage
Bi-Directional
5% Voltage Tolerance
Packaging Option
B = Bulk (500 pcs)
T = Tape and reeled (1500 pcs)
ORDERING INFORMATION
10000
1000
100
10
Cj (pf)
a71 STAND-OFF VOLTAGE
Uni-directional
Bi-directional
1 10 100 1000
Device Stand-off Voltage - Volts
100kw
20kw
5kw
2kw
500w
100w
Pp
(KW)
1µs10µs 100µs 1ms 10ms
Pulse Time (tp)
Figure 1 - Capacitance vs. Stand-off Voltage Figure 2 - Peak Pulse Power vs. Pulse Time
All dimensions in mm