LF2-102HB datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > LF2-102HB

Preview

LF2-102HB: DescriptionFAILSAFE FUSIBLE WIREWOUND RESISTORS; File Size80KB，1 Pages; ManufacturerRCD Components Inc.; Websitehttp://www.rcdcomponents.com/

Download Datasheet View All

LF2-102HB Overview

FAILSAFE FUSIBLE WIREWOUND RESISTORS

Preview

Download Datasheet

View All

FAILSAFE FUSIBLE WIREWOUND RESISTORS

RESISTORS CAPACITORS COILS DELAY LINES

LF2 SERIES

RoHS

Term.W is

RoHS

compliant

& 260°C

compatible

FEATURES

Industry’s widest range!

Withstands lightning surges and power crosses

Resistance range: 0.01Ω to 10KΩ

LF2 1Ω to 1.6K meets UL497A, Bellcore GR1089, ITU-T K.20

LF2A meets Bellcore TR1089 specifications

Standard tolerance: ±1% or ±5% (available to ±0.01%)

Available on RCD’s exclusive

SWIFT

delivery program!

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

OPTIONS

Option A: TR1089 performance

Option X: Non-inductive (0.2µH max

≤50Ω,

0.37µH >50Ω)

Option ER: 100 Hour Burn-In

Customized fusing characteristics

Matched pairs or groups

←

↑

1 2

→

←

3 4

↑

Pin 1 & 4,

→ ←

.032” Pin 2 & 3

.023”

RCD

Type

LF 2

Wattage

@ 25°C

2.0 W

R esistance

R an g e

0.01

Ω

- 10K

Ω∗

* LF2A resistance range is 1.8Ω to 100Ω

TYPICAL PERFORMANCE CHARACTERISTICS

Wattage Derating

Load Life (1000 hours)

Moisture Resistance

Temperature Cycling

Short Time Overload

Lightning Surge Capability

LF2 5.6

Ω

-10K

LF2A 1.8 -100

Ω

Temperature Coefficient

.10

Ω

to .99

Ω

1Ω and above

Operating Temperature

Flammability

21mW/°C >25°C

±0.5%

±1%

±0.5% (-55 to +120°C)

±0.2%(10W, 5 Sec)

10µSx1000µS 1KV/100A peak, 10

Ω

source, 50 pulses x 60S rep (peak

voltages up to 10KV avail.)

Standard Optional

90ppm 10,20,30,50

50ppm 10,20,30

-55°C to +120°C std (may be higher or

lower on custom designs depending

on fuse rating)

UL 94V-0, EC 695-2-2

100W

50W

30W

Fusing Characteristics

10W

LF2 Fusing Range (Seconds, Typ.)

RCD Components Inc,

520 E.Industrial Park Dr, Manchester, NH, USA 03109

rcdcomponents.com

Tel: 603

669

0054 Fax: 603

669

5455 Email:sales@rcdcomponents.com

FA023B

Sale of this product is in accordance with GF-061. Specifications subject to change without notice.

43210987654321

Power (Watts)

20 30 50 100 200 300 500

○

↓

1 2

3 4

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.

D IME N S ION S Inch [mm]

1.045±.02

[26.5±.5]

.450±.02

[11.43±.5]

.265±.02

[6.73±.5]

.125 Mi n.

[3.17±.5]

.700±.015

[17.78±.4]

.900±.015

[22.86±.4]

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)

LF2

- 1001 -

F B

Resis.Code 1%:

3 signif. figures & multiplier,

(R100=.1Ω,1R00=1Ω,10R0=10Ω,1000=100Ω, 1001=1K, etc)

Resis.Code 2%-10%:

2 signif. figures & multiplier,

(R10=0.1Ω, 1R0=1Ω, 100=10Ω, 101=100Ω, 102=1K, etc)

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)

Recommended Resources

Square wave and triangle wave oscillator circuit composed of 5532

Three primary color display circuit

LA3161 audio IC circuit

FM optical transmitter with a center frequency of 50kHz

Compact Bridge Sense Amplifier Circuit

Battery Voltage Regulator Charger Circuit

Help: About the level conversion of tlv320aic23: I am using a 5510 development board, and the codec on it is tlv320aic23. My program needs to judge the voltage value of the external input. If it is greater than a certain amplitude, what should I do?...; jus_ly Analogue and Mixed Signal

How did you get your ticket home? Here is the latest ticket grabbing strategy: [font=微软雅黑][size=3][/size][/font] [font=微软雅黑][size=3] [/size][/font][b] [font=微软雅黑][size=3]You can grab tickets for the 30th today. Have you secured your ticket? [/size][/font][/b][b][font=微软雅黑][size=...; eric_wang Talking

Xunwei imx6ull development board uses C language to call shell commands to control LED lights: [i=s]This post was last edited by G. Zhihan on 2021-10-8 14:36[/i]If you don't feel like using commands to control LED lights, you can use programs to control them and let the program help us input th...; G.栀寒 ARM Technology

Date in spring---this May Day is special: The May Day Golden Week in 2020 is very special. It has always been one of the busiest periods. In the past, when the Golden Week arrived, the streets were bustling and the scenic spots were crowded. ...; qditz Talking

FPGA-based CPU design: ...; qin552011373 FPGA/CPLD

FPGA controls packet loss on Gigabit Ethernet ports: I use FPGA to control the Gigabit Ethernet port to send data to the PC. The PC has a code for receiving data written on the Linux system on the virtual machine. When the frequency of sending data pack...; 全部都是泡馍 FPGA/CPLD

Shortcut: E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF EG EH EI EJ EK EL EM EN EO EP EQ ER ES ET EU EV EW EX EY EZ F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF FG FH FI FJ FK FL FM FN FO FP FQ FR FS FT FU FV FW FX FY FZ G0 G1 G2 G3 G4 G5 G6 G7 G8 G9 GA GB GC GD GE GF GG GH GI GJ GK GL GM GN GO GP GQ GR GS GT GU GV GW GX GZ H0 H1 H2 H3 H4 H5 H6 H7 H8 HA HB HC HD HE HF HG HH HI HJ HK HL HM HN HO HP HQ HR HS HT HU HV HW HX HY HZ I1 I2 I3 I4 I5 I6 I7 IA IB IC ID IE IF IG IH II IK IL IM IN IO IP IQ IR IS IT IU IV IW IX J0 J1 J2 J6 J7 JA JB JC JD JE JF JG JH JJ JK JL JM JN JP JQ JR JS JT JV JW JX JZ K0 K1 K2 K3 K4 K5 K6 K7 K8 K9 KA KB KC KD KE KF KG KH KI KJ KK KL KM KN KO KP KQ KR KS KT KU KV KW KX KY KZ

Popular Components