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SEP0080Q38CB Datasheet, PDF (3/5 Pages) Littelfuse – The new SEP (SIDACtor Ethernet/PoE Protector) series has a surge rating compatible
SIDACtor® Protection Thyristors
Broadband Optimized™ Protection
Normalized VS Change vs. Junction Temperature
14
12
10
8
6
4
25 °C
2
0
-4
-6
-8
-40 -20 0 20 40 60 80 100 120 140 160
Junction Temperature (TJ) – °C
Normalized DC Holding Current vs. Case Temperature
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
-40 -20
25°C
0 20 40 60 80 100 120 140 160
Case Temperature (TC) - ºC
Soldering Parameters
Reflow Condition
- Temperature Min (Ts(min))
Pre Heat -Temperature Max (Ts(max))
- Time (Min to Max) (ts)
Average ramp up rate (Liquidus Temp (TL)
to peak)
TS(max) to TL - Ramp-up Rate
Reflow
- Temperature (TL) (Liquidus)
- Temperature (tL)
Peak Temp (TP)
Time within 5°C of actual Peak Temp (tp)
Ramp-down Rate
Time 25°C to Peak Temp (TP)
Do not exceed
Pb-Free assembly
(see Fig. 1)
¡$
¡$
60-180 secs.
3°C/sec. Max.
3°C/sec. Max.
¡$
60-150 secs.
  ¡$
30 secs. Max.
6°C/sec. Max.
8 min. Max.
¡$
TP
TL
TS(max)
Figure 1
Ramp-up
TS(min)
Preheat
tS
25
time to peak temperature
(t 25ºC to peak)
tP
Critical Zone
TL to TP
tL
Ramp-down
Time
Physical Specifications
Environmental Specifications
Lead Material
Terminal Finish
Body Material
Copper Alloy
100% Matte-Tin Plated
UL recognized epoxy meeting flammability
classification 94V-0
High Temp Voltage
Blocking
Temp Cycling
Biased Temp &
Humidity
High Temp Storage
Low Temp Storage
Thermal Shock
Resistance to Solder
Heat
Moisture Sensitivity
Level
80% Rated VDRM (VAC Peak  ¡$PS ¡$ 
504 or 1008 hrs. MIL-STD-750 (Method 1040)
JEDEC, JESD22-A-101
¡$UP ¡$ NJOEXFMM VQUP
cycles. MIL-STD-750 (Method 1051) EIA/JEDEC,
JESD22-A104
52 VDC ¡$ 3) VQUPIST&*"
JEDEC, JESD22-A-101
¡$IST.*-45% .FUIPE 
JEDEC, JESD22-A-101
-65°C, 1008 hrs.
¡$UP ¡$ NJOEXFMM TFDUSBOTGFS 
10 cycles. MIL-STD-750 (Method 1056) JEDEC,
JESD22-A-106
¡$ TFDT.*-45% .FUIPE
3)  ¡$ IST SFnPXDZDMFT
¡$1FBL +&%&$+45% -FWFM
© 2011 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
55
Revised: February 22, 2011