LF2-1000FB RCD [RCD COMPONENTS INC.], LF2-1000FB Datasheet
LF2-1000FB
Manufacturer Part Number
LF2-1000FB
Description
FAILSAFE FUSIBLE WIREWOUND RESISTORS
Manufacturer
RCD [RCD COMPONENTS INC.]
Datasheet
1.LF2-1000FB.pdf
(1 pages)
FEATURES
OPTIONS
* LF2A resistance range is 1.8
TYPICAL PERFORMANCE CHARACTERISTICS
RCD Components Inc, 520 E.Industrial Park Dr, Manchester, NH, USA 03109
83
LF2 SERIES
FAILSAFE FUSIBLE WIREWOUND RESISTORS
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LF2 1 to 1.6K meets UL497A, Bellcore GR1089, ITU-T K.20
Available on RCD’s exclusive SWIFT
Option ER: 100 Hour Burn-In
t a
Standard tolerance: ±1% or ±5% (available to ±0.01%)
Option A: TR1089 performance
Option X: Non-inductive (0.2µH max 50 , 0.37µH >50
Matched pairs or groups
m
m
Industry’s widest range!
Withstands lightning surges and power crosses
Resistance range: 0.01
LF2A meets Bellcore TR1089 specifications
Customized fusing characteristics
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FA023B Sale of this product is in accordance with GF-061. Specifications subject to change without notice.
to 100
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LF2 Fusing Range (Seconds, Typ.)
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1 2 3 4 5 6 7 8 9 0 1 2 3 4
1 2 3 4 5 6 7 8 9 0 1 2 3 4
1 2 3 4 5 6 7 8 9 0 1 2 3 4
1 2 3 4 5 6 7 8 9 0 1 2 3 4
1 2 3 4 5 6 7 8 9 0 1 2 3 4
1 2 3 4 5 6 7 8 9 0 1 2 3 4
1 2 3 4 5 6 7 8 9 0 1 2 3 4
1 2 3 4 5 6 7 8 9 0 1 2 3 4
1 2 3 4 5 6 7 8 9 0 1 2 3 4
1 2 3 4 5 6 7 8 9 0 1 2 3 4
1 2 3 4 5 6 7 8 9 0 1 2 3 4
10 20 30 50 100 200 300 500
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.023” Pin 2 & 3
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rcdcomponents.com
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RCD type LF2 is designed to provide circuit protection for
telecom applications, such as line feed, ADSL, HDSL, and
switching networks, as well as snubber circuits, switching
regulators, power faults, etc. The LF2 is a combination power
resistor and isolated thermal fuse housed in a ceramic case.
The combination enables the device to withstand short-time
overloads (various lightning surges, AC power crosses, inrush
currents, and ESD pulses), yet open safely under extended
overload conditions. The all-welded internal construction
combined with highest grade materials ensures utmost
performance and reliability. For even greater protection under
power cross conditions, as required by TR1089, specify LF2A.
HOW TO USE LF2
1 2
0
APPLICATION NOTES
Failsafe surge resistors are often tailored to particular customer
requirements. Consultation with RCD’s Engineering department is
recommended on all applications to ensure optimum performance
at the most cost-effective price. Depending on the application,
Series LF2 or LF2A can often satisfy the requirements of UL497A,
UL1950, UL1459, FCC Part 68, REA 397 & PE60, Bellcore
GR1089 & TR1089, ITU-T K.20 & K.21, VDE 0750, IEC 1000-4,
CCITT K17, IEEE 472 &587, ANSI C37.90 & C62.41, SAE J1113,
MIL-STD-704, MIL-STD-1399, & MIL-STD-1275.
P/N DESIGNATION:
RCD Type
Options: X, ER, A
(leave blank for standard)
Resis.Code 1%: 3 signif. figures & multiplier,
(R100=.1 1R00=1 ,10R0=10 1000=100
Resis.Code 2%-10%: 2 signif. figures & multiplier,
(R10=0.1
Tolerance Code: J=5%, H=3%, G=2%, F=1%
Packaging: B = Bulk (standard)
Optional Temp. Coefficient (leave blank for standard):
5=5ppm, 10 = 10ppm, 20 = 20ppm, etc.
Termination: W=Pb-free, Q=Sn/Pb (leave blank if either is acceptable)
B
3
±
. ±
0 .
] 5
2
I D
Tel: 603
M
1R0=1 , 100=10
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6 [
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6
-
669
5
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3
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0054 Fax: 603
] 5
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2
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LF2
101=100
2
1 .
5
-
[
D
669
7
m
M
. ±
Pin #1 and #2 shall be shorted
together by the user on the PCB.
The LF2 resistor is connected
into the circuit via pins #3 and #4.
m
. n i
-
] 5
5455
]
RESISTORS CAPACITORS COILS DELAY LINES
102=1K, etc
Email:sales@rcdcomponents.com
- 1001 -
1001=1K, etc
7 .
1 [
0
7
0
7 .
E
±
8
0 .
. ±
1
] 4
5
F B
9 .
2 [
0
2
0
8 .
F
±
6
0 .
. ±
1
] 4
W
5
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