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M-949-11

Description
High Frequency / RF Relays 5VDC Non-latching Single coil gullwing
CategoryTopical application    Mechanical and electrical/engineering/automation   
File Size86KB,3 Pages
ManufacturerIXYS ( Littelfuse )
Websitehttp://www.ixys.com/
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M-949-11 Overview

High Frequency / RF Relays 5VDC Non-latching Single coil gullwing

M-949-11 Parametric

Parameter NameAttribute value
Product CategoryLow Signal Relays - PCB
ManufacturerIXYS ( Littelfuse )
RoHSDetails
ProductLow Signal Relays
Contact FormSPST (1 Form A)
Contact Current Rating500 mA
Coil Current200 mA
Contact TerminationSolder Pin
PackagingTube
Coil Resistance8.1 Ohms
Mounting StyleThrough Hole
Factory Pack Quantity24
M-949-11
I
NTEGRATED
C
IRCUITS
D
IVISION
Features
Meets UL and British Standard specifications
Designed for use with FCC Part 68 certified
equipment
Temperature ranges from -25º to 70ºC
Senses telephone line current from 15 to 200 mA
Includes a 1-Form-A relay contact
Achieves excellent longitudinal balance
Meets high-voltage isolation requirements up to
4,000 volts
Filters common-mode noise through dual coils
Applications
Telephone Exchange Products
PBX and Key Systems
Station Message Detail Reporting (SMDR)
Systems
Figure 1. Electrical Configuration
Line Sense Relay
Description
The M-949-11 Line Sense Relay is a small,
PCB-mounted loop current detector with the safety
and reliability features required for UL and British
Standard (BSI) regulated telephone applications.
The M-949-11 is designed for both North American
and international use, and offers superior protection
against voltage surges such as lightning strikes.
When connected to the voice pair (tip and ring) of an
ordinary telephone line, the M-949-11 provides a
1-Form-A relay closure in response to current flowing
through the wires. This closure can be used with
control circuitry for on-hook/off-hook monitoring, switch
hook flash detection, and rotary dial pulse counting.
The M-949-11 is ideally suited for use with the Teltone
M-959 Dial Pulse Counter and other loop-current
applications, including microprocessor-based designs.
Ordering Information
Part #
M-949-11
Description
Loop Current Sensing Relay
Figure 2. Typical Application: Dialed Digit Monitor
DS-M-949-11-R04
www.ixysic.com
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