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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
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-020
Solderability
IEC-60127-4 (215°C immersion, 3
seconds)
Resistance to
Dissolution of
Metallization
IPC / EIA J-STD-002-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
Temperature
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
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.