Surface Mount Fuses
Miniature Surface Mount
Telecom NANO2® Fuse 461 Series and Teccor TeleLink® Fuse
®
®
RoHS
®
• Surface mount surge resistant Slo-Blo fuse.
• Meets UL 60950 3rd Edition power cross requirements stand
alone.
• Designed to allow compliance with Telcordia GR-1089-CORE
and TIA-968-A (formerly FCC Part 68) Surge Specifications.
• Provides coordinated protection with Littelfuse SIDACtor®
Protection Thyristors without series resistors.
• Ideal for use in telecommunication equipment including line
cards, modems, fax machines, phones, answering machines,
caller ID devices and other products connected to phone
network.
• 2A rating has improved temperature rise performance under
Reference Dimensions:
2.2A surge current testing when compared with 1.25A rating.
• Product is RoHS Compliant and compatible with lead-free
solders and higher temperature profiles when ordered with
Standard Silver Plated Brass Caps.
3.25
10.10
(.128")
• Standard product is RoHS Compliant and compatible with
lead-free solders and higher temperature profiles.
(.397")
6.10
(.240")
3.12
(.123")
3.43
T
F
1.25A
L
AGENCY APPROVALS: Recognized under the Components
(.135")
Program of Underwriters Laboratories and Certified by CSA.
12.6
(.496")
3.12
(.123")
Littelfuse:
UL E10480
CSA LR29862
1.70 typ
(.067")
Recommended Pad Layout
Teccor:
UL E191008
CSA LR702828
PHYSICAL SPECIFICATIONS:
Materials: Body: Ceramic
RoHS Compliant Terminations: Silver Plated Brass Caps
Terminations: Tin-Lead Alloy also available, add suffix, T.
100
10
Soldering Parameters:
Reflow Solder — 230°C, 30 seconds maximum.
Wave Solder — 260°C, 3 seconds maximum.
10
PACKAGING SPECIFICATIONS: 24mm Tape and Reel
per EIA-RS481-2, (IEC 286 part 3); 2500 fuses per reel,
add suffix, ER.
ORDERING INFORMATION:
Telecom
Teccor
2
1
Nano
TeleLink
Nominal
Nominal
Catalog
Number
0461.500
0461 1.25
0461 002.
Catalog Ampere Voltage Resistance Melting I2t
Number Rating Rating Cold Ohms
F0500T
F1250T
F1251T
A2 Sec.
0.5
1.25
2.00
250
250
250
.560
.110
.050
.8401
16.51
17.51
0.1
0.01
Notes:
1 I2t is calculated at 10 msec or less. I2t at 10 times rated current has a typical value of:
24 A2sec (2.0A), 22 A2sec (1.25A), 1.3 A2sec (0.5A).
• Typical inductance < 40nH up to 500 MHz.
• Resistance changes 0.5% for every ˚C.
• Resistance is measured at 10% rated current.
0.001
0.1
1
10
CURRENT IN AMPERES
100
1000
377
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