Littelfuse SL0902A Series - Manual (Page 4)

©2012 Littelfuse, Inc.
Gas Discharge Tube (GDT) Products
10
Revised: September 17, 2012
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
Customer should verify actual device performance in their specific applications.
CG5 and SL0902A Series
CG5 and SL0902A Series
Note: These devices are not recommended for IR
or Convection Reflow process.
Reflow Condition Pb – Free assembly
Pre Heat
- Temperature Min (T
s(min)
) 150°C
- Temperature Max (T
s(max)
) 200°C
- Time (Min to Max) (t
s
) 60 – 180 secs
Average ramp up rate (Liquidus Temp
(T
L
) to peak
3°C/second max
T
S(max)
to T
L
- Ramp-up Rate 5°C/second max
Reflow
- Temperature (T
L
) (Liquidus) 217°C
- Temperature (t
L
) 60 – 150 seconds
Peak Temperature (T
P
) 260 +0/-5 °C
Time within 5°C of actual peak
Temperature (t
p
)
10 – 30 seconds
Ramp-down Rate 6°C/second max
Time 25°C to peak Temperature (T
P
) 8 minutes Max.
Do not exceed 260°C
Soldering Parameters - Reflow Soldering (Surface Mount Devices)
Time
T
emperature
T
P
T
L
T
S(max)
T
S(min)
25
t
P
t
L
t
S
time to peak temperature
(t 25ºC to peak)
Ramp-down
Ramp-up
Preheat
Critical Zone
T L to T P
Soldering Parameters - Wave Soldering (Thru-Hole Devices)
Soldering Parameters - Hand Soldering
Dwell Time
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
0 10 20 30 40 50 60 70 80 90 10
0
11
0
12
0
13
0
14
0
15
0
16
0
17
0
18
0
19
0
20
0
21
0
22
0
23
0
24
0
Time (Seconds)
Temperature (°C) - Measured on bottom side
of boar
d
Cooling Time Preheat Time
Wave Parameter Lead-Free Recommendation
Preheat:
(Depends on Flux Activation Temperature) (Typical Industry Recommendation)
Temperature Minimum: 100 ° C
Temperature Maximum: 150 ° C
Preheat Time: 60-180 seconds
Solder Pot Temperature: 280 ° C Maximum
Solder Dwell Time: 2-5 seconds
Recommended Process Parameters:
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.