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Clare’s Molded DYAD® dry reed switches are ideally suited
for small switching signal applications. This switch has
sputtered ruthenium contacts and an extraordinary seal
strength, achieved by a patented laser sealing of the glass.
In low level or dry switching environments, both switches
typically provide >1 billion operations. The switches have
hermetically sealed contacts and offer a wide range of
available magnetic sensitivities. In addition, the molding
process provides a solid plastic outer shell. This plastic
shell provides superior mechanical strength, eliminates
concerns over handling glass switches, and provides an
ideal solution for high speed, automated assembly
environments."
Features Description
•Small size
•SMT-compatible
•Easily formed leads
•Sputtered ruthenium contacts
•Hermetically sealed contacts
•Fast switching speed — up to 500Hz
•Wide range of available magnetic sensitivities
• Superior mechanical strength
• Enhanced for better auto placement
Applications
•Security
−Proximity sensing
−Smoke alarms
•Automotive
−Level sensor
−Lamp current sensor
•Relays
Standard Test Coil
The magnetic force (expressed in NI, AT or Ampere Turns) required to cause the reed switch contacts to
close is called the pull-in or operate value.
Ordering Information
A complete part number is represented by the digits to the
right. For example, CM15S1030 is a MOLDED DYAD® with
a minimum operate value of 10NI and a maximum of 30NI.
Refer to the switch operating specification charts for avail-
able ranges. Special ranges are available upon request.
Surface Mount Molded DYAD
Refer to operating characteristics table for complete part number.
Molded DYAD®
(1) Consult factory for test procedure.
The reed switch shall be placed in the test coil with the gap centered in the core of the coil winding.
Test leads and their clips must be non-magnetic.
The longitudinal axis of the test coil and the test switch shall be vertical.
CM15
Part # Coil - 1
Coil definition NARM1 CTC01
Coil resistance 1200Ω
Number of turns 5,000
Wire size (nom. diameter) 0.0399mm (AWG 46)
Bobbin diameter (inside coil) 3.96mm
Winding length 10.4mm
MOLDED DYAD®
Part # Operate Range (NI)1
CM15S1015 10 to 15
CM15S1020 10 to 20
CM15S1030 10 to 30
CM15S1520 15 to 20
CM15S1525 15 to 25
CM15S2025 20 to 25
MOLDED DYAD® Surface Mount
Part # Operate Range (NI)1,2,3
CM15-2024 10 to 15
CM15-2259 10 to 20
CM15-2282 10 to 30
CM15-2025 15 to 20
CM15-2249 15 to 25
CM15-2026 20 to 25
1 Tolerance = ± 1.5NI
2 Full Blade Sensitivity
3 Surface Mount Switches are packaged 3,000 parts per reel
1
CM15
DS-CM15-R1
Maximum Operate Value (NI)
Minimum Operate Value (NI)
CM15 S XX XX
"S" for straight switch
blank for SMT
CM15
www.clare.com Rev. 1
Specifications
All parameters are at 25°C unless otherwise stated.
Absolute Maximum Ratings are stress ratings. Stresses
in excess of these ratings can cause permanent damage
to the device. Functional operation of the device at these
or any other conditions beyond those indicated in the
operational sections of this data sheet is not implied.
Exposure of the device to the absolute maximum ratings
for extended period may degrade the device and effect
its reliability.
Absolute Maximum Ratings (@ 25˚ C)
PARAMETER CONDITIONS SYMBOL MIN TYP MAX UNITS
Contact Ratings
Operate ampere turns range Full Blade Tolerance = ± 1.5NI AT 10 - 30 NI
Release ampere turns range Full Blade Tolerance = ± 1.5NI AT 5 - 30 NI
Switching Voltage Max DC/PeakAC Resistive VL- - 200 VDC
Switching Current Max DC/PeakAC Resistive IL- - 500 mAmps
Carry Current Max DC/PeakAC Resistive IC- - 1.5 Amps
Contact Rating Max DC/PeakAC Resistive - - - 10 VA
Life Expectancy 1V, 10mA Signal Level - - 1000 - x106 Ops
10V, 10mA Low Level - - 500 - x106 Ops
50V, 100mA Telecom Load - - 2 - x106Ops
100V, 100mA Rated Loads - - 2 - x106 Ops
Static Contact Resistance 50mV, 10mA(1) CR - 80 150 mΩ
Contact Material - - Ru - -
Switch Specifications
Insulation Resistance(2) 100V, 25°C, 40% RH IR 1091011 -Ω
Capacitance Across Open Contacts - - 0.3 - pF
Dielectric Strength(5) Between Contacts - 250 300 - VDC/Peak AC
Operate Time, At nominal coil voltage, TOP - - 0.5 ms
including bounce 10Hz Square Wave
Release Time Zener-Diode Suppression(3) TREL - - 0.2 ms
Environmental Ratings
Storage Temperature TA-40 - +125 °C
Operating Temperature TO-40 - +125 °C
Soldering Temperature - - - +240 °C
Vibration 5Hz - 200Hz G - - 20 -Gs
Shock 11±1ms, 1/2 Sine Wave S - - 30 Gs
Shock - survivability 11±1ms, 1/2 Sine Wave S - - 500 Gs
Parameter Min Typ Max Units
Switching Voltage
CM15 - MOLDED DYAD®200 Volts
Switching Current
CM15 - MOLDED DYAD®0.5 Amps
Carry Current
CM15 - MOLDED DYAD®1.5 Amps
Switching Frequency
CM15 - MOLDED DYAD®500 Hz
Contact Resistance
CM15 - MOLDED DYAD®150 mΩ
(See detailed specifications for more information.)
(1) Contact resistance measured with 4 terminal method, 1.1" between test leads
(2) >1012 Ω is available upon request
(3) A 24V zener in series with a diode across the coil
(4) Use caution not to exceed vibration resistance limits while ultrasonically cleaning. Contact Clare Engineering for more details/recommendations
(5) 15 ampere turn minimum
Molded DYAD®
2
CM15
www.clare.com
Rev. 1
Mechanical Dimensions
DIMENSIONS
mm
(inches)
Molded DYAD®
3
CLARE LOCATIONS
Clare Headquarters
78 Cherry Hill Drive
Beverly, MA 01915
Tel: 1-978-524-6700
Fax: 1-978-524-4900
Toll Free: 1-800-27-CLARE
Clare Switch Division
4315 Earth City Expresssway
St. Louis, MO 63045
Tel: 1-314-770-1832
Fax: 1-314-770-1812
Clare Micronix Division
145 Columbia
Aliso Viejo, CA 92656-1490
Tel: 1-949-831-4622
Fax: 1-949-831-4628
SALES OFFICES
AMERICAS
Americas Headquarters
Clare
78 Cherry Hill Drive
Beverly, MA 01915
Tel: 1-978-524-6700
Fax: 1-978-524-4900
Toll Free: 1-800-27-CLARE
Eastern Region
Clare
P.O. Box 856
Mahwah, NJ 07430
Tel: 1-201-236-0101
Fax: 1-201-236-8685
Toll Free: 1-800-27-CLARE
Central Region
Clare Canada Ltd.
3425 Harvester Road, Suite 202
Burlington, Ontario L7N 3N1
Tel: 1-905-333-9066
Fax: 1-905-333-1824
Western Region
Clare
1852 West 11th Street, #348
Tracy, CA 95376
Tel: 1-209-832-4367
Fax: 1-209-832-4732
Toll Free: 1-800-27-CLARE
Canada
Clare Canada Ltd.
3425 Harvester Road, Suite 202
Burlington, Ontario L7N 3N1
Tel: 1-905-333-9066
Fax: 1-905-333-1824
EUROPE
European Headquarters
CP Clare nv
Bampslaan 17
B-3500 Hasselt (Belgium)
Tel: 32-11-300868
Fax: 32-11-300890
France
Clare France Sales
Lead Rep
99 route de Versailles
91160 Champlan
France
Tel: 33 1 69 79 93 50
Fax: 33 1 69 79 93 59
Germany
Clare Germany Sales
ActiveComp Electronic GmbH
Mitterstrasse 12
85077 Manching
Germany
Tel: 49 8459 3214 10
Fax: 49 8459 3214 29
Italy
C.L.A.R.E.s.a.s.
Via C. Colombo 10/A
I-20066 Melzo (Milano)
Tel: 39-02-95737160
Fax: 39-02-95738829
Sweden
Clare Sales
Comptronic AB
Box 167
S-16329 Spånga
Tel: 46-862-10370
Fax: 46-862-10371
United Kingdom
Clare UK Sales
Marco Polo House
Cook Way
Bindon Road
Taunton
UK-Somerset TA2 6BG
Tel: 44-1-823 352541
Fax: 44-1-823 352797
ASIA PACIFIC
Asian Headquarters
Clare
Room N1016, Chia-Hsin, Bldg II,
10F, No. 96, Sec. 2
Chung Shan North Road
Taipei, Taiwan R.O.C.
Tel: 886-2-2523-6368
Fax: 886-2-2523-6369
http://www.clare.com
Worldwide Sales Offices
Specification: PB-CM15-R1
©Copyright 2001
Molded Ultra-Mini DYAD™, Molded Mini DYAD™, and
Molded DYAD® are trademarks of Clare, Inc.
All rights reserved. Printed in USA.
4/23/01
Clare cannot assume responsibility for use of any circuitry other
than circuitry entirely embodied in this Clare product. No circuit
patent licenses nor indemnity are expressed or implied. Clare re-
serves the right to change the specification and circuitry, without
notice at any time. The products described in this document are not
intended for use in medical implantation or other direct life support
applications where malfunction may result in direct physical harm,
injury or death to a person.
