Littelfuse 461 Series - Manual (Page 4)

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Surface Mount Fuses
Surge Resistant > 461 Series TeleLink ® Fuse
Materials
Body: Ceramic
Terminations: Silver-plated Caps
Product Marking Brand Logo, Ampere Rating, T
Operating
Temperature
-55°C to 125°C
Moisture Sensitivity
Level
Level 1, J-STD-020C
Solderability
IEC-60127-4 (215°C immersion, 3
seconds)
Resistance to
Dissolution of
Metallization
IPC / EIA J-STD-002A-Test D 260°C for
120 seconds
Thermal Shock
MIL-STD-202, Method 107, Test
Condition B, -55°C to +125°C, 30
minutes @ each extreme
Mechanical Shock
MIL-STD-202, Method 213, Test
Condition A - Half Sine, 50 G's, 11
msecs. duration
High Frequency
Vibration MIL-STD-202, Method 204, Test
Condition D
Moisture Resistance MIL-STD-202, Method 106, 50 cycles
Terminal Strength
Board deflection per EIA / IS-722, 1mm
deflection for 1 minute
Terminal Attachment
MIL-STD-202, Method 211, Test
Condition A, 5 lbs applied to end caps
Product Characteristics
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 – 120 seconds
Average Ramp-up Rate (liquidus Temp
(T
l
) to peak)
5°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 – 90 seconds
peak Temperature (T
p
) 260 +0/–5 °C
Time within 5°C of actual peak
Temperature (t
p
)
20 – 40 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
Packaging
Part Numbering System
packaging Option packaging Specification Quantity Quantity & packaging Code
24mm Tape and Reel EIA RS-481-2 (IEC 286, part 3) 2500 ER
0461 1.25 E R
SERIES
AMP Code *
qUANTITY Code
PACKAGING Code
Refer to Electrical
Characteristics table
E = 2500 pcs
R = Tape and Reel
*Example:
2 amp product is 0461002.ER
(1.25 amp product shown above)
Time
Te
mperatur
e
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