461 Series TeleLink® Datasheet by Littelfuse Inc.

@ ms mm“, m:
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/18/15
Surface Mount Fuses
Surge Resistant > 461 Series TeleLink® Fuse
461 Series TeleLink® Fuse
Description
Agency Approvals
Electrical Characteristics for Series
Features
Surface mount surge
resistant Slo-Blo® fuse
Meet UL 60950 3rd Edition
power cross requirements
standard alone
Designed to allow
compliance with Telcordia
GR-1089-CORE and TIA-
968-A (formerly FCC Part
68) Surge Specifications
Provide coordinated
protection with Littelfuse
SIDACtor® Transient
Voltage Suppressor (TVS)or
a GreentubeTM Gas Plasma
Arrestor, without series
resistors
Designed to serve
the requirements
of a wide range of
telecommunication and
networking equipment
2A rating has improved
temperature rise
performance under 2.2A
surge current testing when
compared with 1.25A
rating
Product is Halogen Free
and RoHS compliant and
compatible with lead-
free solder and higher
temperature profiles when
ordered with Standard
Silver Plated Brass Caps
Standard product is RoHS
Compliant and compatible
with lead-free solders and
higher temperature profiles
RoHS
AGENCY AGENCY FILE NUMBER AMPERE RANGE
E10480 .5A - 2A
29862 .5A - 2A
% of Ampere
Rating Opening Time
100% 4 hours, Minimum
250% 1 sec., Min.; 120 secs., Max.
The Littelfuse 461 Series TeleLink® Surface Mount,
Surge Resistant Fuse, offers over-current protection for
a wide range of telecom applications without requiring
a series resistor. When used in conjunction with a
Littelfuse SIDACtor® Transient Voltage Suppressor (TVS)
or a GreentubeTM Gas Plasma Arrestor, this combination
provides a compliant solution for standards and
recommendations such as GR-1089–Core, TIA-968-A, UL/
EN/IEC 60950, and ITU K.20 and K.21. The coordination
requirement contained in GR-1089–Core, and ITU K.20/21
may require a series of impedance devices.
Applications
T1/E1/J1 and HDSL2/4
SLIC interface portion of Fiber to the Curb (FTTC) and
Fiber to the Premises (FTTP)
Non-Fiber SLIC interface for Central Office (CO) locations
and Remote Terminals (RT)
xDSL applications such as ADSL, ADSL2+, VDSL, and
VDSL2+
Ethernet 10/100/1000BaseT
POTS applications such as modems, answering
machines, telephones, fax machines, and security
systems
ISDN “U” interface
Baystation T1/E1/J1, T3 (DS3) trunk cards
Telecom Nano Fuse Temperature Reading
04611.25 < 82°C (180°F)
0461002. < 50°C (122°F)
Maximum Temperature Rise
Higher Currents and PCB layout designs can affect this parameter.
Readings are measured at rated current after temperature stabilizes.
Specifications are subject to change without notice. Application testing is strongly recommended.
Additional Information
Datasheet Samples
Resources
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© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/18/15
Surface Mount Fuses
Surge Resistant > 461 Series TeleLink® Fuse
Electrical Specifications by Item
Ampere
Rating
(A)
Amp Code
Max
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance (Ohms)
Nominal Melting
I2t (A2sec)
Agency Approvals
0.500 .500 600 50A @ 250 VAC
60 A @600 VAC
100 A @80 VDC
0.560 0.8401x x
1.25 1.25 600 .1040 16.51x x
2.00 002. 600 .0450 1 7. 5 1x x
1 I2t is calculated at 10 msecs. 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.
GR 1089 Inter-building requirements
GR 1089 1st level lighting surge inter-building
(Equipment under test can not be damaged and must
continue to operate properly)
Surge
Minimum
Peak
Voltage
(V)
Minimum
Peak
Current
(A)
Max.
Rise/Min.
Decay
(µs)
Repetitions
Each
Polarity
Fuse
Choices
1 600 100 10/10 0 0 25 1.25, 2.0
21000 10 0 10/360 25 1.25, 2.0
31000 10 0 10/1000 25 1.25, 2.0
4 2500 500 2/10 10 1.25, 2.0
51000 25 10/360 5 0.5, 1.25, 2.0
GR 1089 2nd level lightning surge telecom port
(Equipment under test shall not become a fire or
electrical safety hazard)
Surge
Minimum
Peak
Voltage
(V)
Minimum
Peak
Current (A)
Max.
Rise/Min.
Decay
(µs)
Repe-
titions
Each
Polarity
Fuse
Choices
15000 500 2/10 1 0.5, 1.25, 2.0
Alter-
native 5000 500/8=625 8/10 1 0.5, 1.25, 2.0
If sufficient series resistance is used, then the 0.5 fuse may be used in test conditions 1-4.
The 0.5 fuse will open during these test conditions. The 1.25 & 2.0 will not open thus
providing operational compliance.
Average Time Current Curves
10001001010.1
0.001
0.01
0.1
1
10
100
CURRENT IN AMPERES
TIME IN SECONDS
1.25A
2A
.500A
Temperature Re-rating Curve
Note:
1. Re-rating depicted in this curve is in addition to the standard re-rating of 25% for
continuous operation.
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/18/15
Surface Mount Fuses
Surge Resistant > 461 Series TeleLink® Fuse
GR 1089 AC power fault 2nd level (fuse can open but
must open in a safe and controlled manner)
Test Vrms
Short
Circuit
Current
(A)
Hits Duration Primary
Protector
Fuse
Choices
1 50 0.33 1 15 min. removed 1.25, 2.0
2100 0.17 1 15 min. removed 1.25, 2.0
3200,400,
600 1 60 1 sec. removed 1.25, 2.0
41000 1 60 1 sec. operative 1.25, 2.0
5 Diagram Diagram 60 5 secs. removed 1.25, 2.0
6 600 0.5 1 30 secs. removed 1.25, 2.0
7 440 2.2 5 2 secs. removed 1.25, 2.0
8 600 3 1 1.1 secs. removed 1.25, 2.0
91000 5 1 0.4 sec. in place 1.25, 2.0
Test
Circuit Vrms
Short
Circuit
Current
(A)
Duration Fuse
1 120,277 25 15 min. 0.5, 1.25, 2.0
2 600 60 5 secs. 0.5, 1.25, 2.0
3 600 7 5 secs. 0.5, 1.25, 2.0
4 100-600 2.2 15 min.. 0.5, 1.25, 2.0
5 Diagram Diagram 15 min. 0.5, 1.25, 2.0
Fuse must open before wiring simulator fuse (MDL 2.0).
Surge Voltage (V) Waveform (µs) Current (A) Repetitions Recommended Fuse
Metallic A 800 10×560 100 1 ea. polarity 1.25
Longitudinal A 1500 10×160 200 1 ea. polarity 1.25
Metallic B 1000 9×720 25 1 ea. polarity 1.25
Longitudinal B 1500 9×720 37.5 1 ea. polarity 1.25
TIA –968-A (formerly FCC Part 68) Surge Waveforms (fuse can not open during type B events)
UL 60950 requirements
UL60950 (EN 60950) (formerly UL 1950) Power Cross (L
= longitudinal, M = metallic)
Test
Number Voltage (V) Current (A) Time Fuse
Choices
L1 600 40 1.5 secs. 0.5, 1.25, 2.0
L2 600 7 5 secs. 0.5, 1.25, 2.0
L3 600 2.2 30 min. 0.5, 1.25, 2.0
L4 200 2.2 30 min. 0.5, 1.25, 2.0
L5 120 25 30 min. 0.5, 1.25, 2.0
M1 600 40 1.5 secs. 0.5, 1.25, 2.0
M2 600 7 5 secs. 0.5, 1.25, 2.0
M3 600 2.2 30 min. 0.5, 1.25, 2.0
M4 600 2.2 30 min. 0.5, 1.25, 2.0
Selection of test number depends on current limiting F fire enclosure/spacing of end product
26 AWG line cord removes L1/M1 test requirement
L5 conducted only if product does not pass section 6.1.2
L2,M2,L3,M3,L4,M4 conducted if not in a fire enclosure
Fuse must open before the wiring simulator fuse (MDL 2.0).
UL60950 (EN 60950) (formerly UL 1950) Impulse Test and Steady-State Electric Strength Test
Test Voltage (V) Current (A) Waveform Repetitions Fuse Choices
Impulse
For handheld units 2500 62.5 10×700ms +/- 10 w/60 secs. rest 0.5, 1.25, 2.0
Non handheld 1500 37.5 10×700ms +/- 10 w/60 secs. rest 0.5, 1.25, 2.0
Steady-State
For handheld units 1500 60Hz 0.5, 1.25, 2.0
Non handheld 1000 60Hz 0.5, 1.25, 2.0
For the type A events the 0.5 fuse will open, providing non-operational compliance. The 1.25 & 2.0 will not open, providing for operational compliance with TIA-968-A type A surge events.
L
F1.25A T3.12
(.123")
3.12
(.123")
10.10
(.397")
3.25
(.128")
3.43
(.135")
12.6
(.496")
6.10
(.240")
Recommended Pad Layout
1.70 typ
(.067")
Dimensions
GR 1089 AC power fault 1st level inter-building (fuse
not allowed to open)
0461 1_.2§ E R
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/18/15
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-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 (Ts(min))150°C
- Temperature Max (Ts(max))200°C
- Time (Min to Max) (ts)60 – 120 seconds
Average Ramp-up Rate (Liquidus Temp
(TL) to peak) 5°C/second max.
TS(max) to TL - Ramp-up Rate 5°C/second max.
Reflow - Temperature (TL) (Liquidus) 217°C
- Temperature (tL)60 – 90 seconds
Peak Temperature (TP)260+0/–5 °C
Time within 5°C of actual peak
Temperature (tp)20 – 40 seconds
Ramp-down Rate 6°C/second max.
Time 25°C to peak Temperature (TP)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
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
(t 25ºC to peak)
Ramp-down
Ramp-up
Preheat
Critical Zone
TL to TP