CLARE MN2308, MN2285, MN2286, MN2288, MN2S1020 Datasheet

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

Clare’s Mini-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.

Mini-Dyad

MN2

™

Applications

• Security

• Proximity sensing

• Smoke alarms

• Automotive

• Level sensor

• Lamp current sensor

• Relays

Approvals

• UL listed

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.

MN2

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

(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.

Ordering Information

A complete part number is represented by the digits to the right. For example, MN2S1030 is a
MINI-DYAD™ with a minimum operate value of 10 and a maximum of 30. Refer to the switch
operating specification charts for available ranges. Special ranges are available upon request.

XX

1,2,3

X

Maximum Operate Value (NI)

Lead Configuration

1

Packaging

MN2S XX XX

Minimum Operate Value (NI)

Surface Mount Mini-Dyad
Refer to operating characteristics table for complete part number.

Mini-DYAD

TM

Part # Operate Range (NI)

MN2S1015 10 to 15
MN2S1020 10 to 20
MN2S1030 10 to 30
MN2S1520 15 to 20
MN2S1525 15 to 25
MN2S2025 20 to 25

Mini-DYAD

TM

Surface Mount

Part # Operate Range (NI)

MN2308 10 to 15
MN2288 10 to 20
MN2339 10 to 30
MN2285 15 to 20
MN2289 15 to 25
MN2286 20 to 25

1

Tolerance = ± 1.5NI

2

Full Blade Sensitivity

3

Surface Mount Switches are packaged 2,000 parts per reel

DS-MN2-R2

www.clare.com

1

Mini-Dyad

MN2

™

Ratings (@ 25˚ C)

Parameter Min Typ Max Units

Switching Voltage
MN2 - Mini-DYAD
Switching Current
MN2 - Mini-DYAD
Carry Current
MN2 - Mini-DYAD

™

™

™

- - 200 Volts

- - 0.5 Amps

- - 2 Amps

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.

Switching Frequency
MN2 - Mini-DYAD

™

- - 500 Hz
Contact Resistance
MN2 - Mini-DYAD

(See detailed specifications for more information.)

™

- -0 100 mΩ

Specifications

All parameters are at 25°C unless otherwise stated.

PARAMETER CONDITIONS SYMBOL MIN TYP MAX UNITS

Contact Ratings

Operate ampere turns range Full Blade Tolerance = ± 1.5NI AT 10 - 25 NI
Release ampere turns range Full Blade Tolerance = ± 1.5NI AT 5 - 25 NI
Switching Voltage Max DC/PeakAC Resistive V
Switching Current Max DC/PeakAC Resistive I
Carry Current Max DC/PeakAC Resistive I

L

L

C

Contact Rating Max DC/PeakAC Resistive - - - 10 VA
Life Expectancy 1V, 10mA Signal Level - - 1000 - x10

10V, 10mA Low Level - - 500 - -x10

50V, 100mA Telecom Load - - 2 - x10

100V, 100mA Rated Loads - - 2 - x10

Static Contact Resistance 50mV, 10mA

(1)

CR - 70 100 Ω

Contact Material - - Ru - -

Switch Specifications

Insulation Resistance

(2)

100V, 25°C, 40% RH IR 10
Capacitance Across Open Contacts - - 0.3 - pF
Dielectric Strength
Operate Time, At nominal coil voltage, T

(5)

Between Contacts - 250 300 - VDC/Peak AC

OP

including bounce 10Hz Square Wave

Release Time Zener-Diode Suppression

(3)

T

REL

Environmental Ratings

Storage Temperature T
Operating Temperature T

A

O

Soldering Temperature - - - +265 ˚C
Vibration Resistance 5Hz - 200Hz G - - 20 -Gs

1

Shock Resistance 11±1ms,

/2 Sine Wave S - - 50 Gs

Weight - - 0.12 - grams/unit

(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 CP Clare
Engineering for more details/ recommendations

(5)

15 ampere turn minimum

- - 200 VDC

- - 500 mAmps

- - 2.0 Amps

9

10

11

- Ω

- - 0.5 ms

- - 0.1 ms

-40 - +125 ˚C

-40 - +125 ˚C

6

Ops

6

Ops

6

Ops

6

Ops

2

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Rev. 2

Performance Data*

Mini-Dyad

MN2

™

Mini-DYAD

Mini-DYAD™

Operate NI vs. Release NI

Test Coil: NARM 1; Full Length Terminals

20
18

16
14
12
10

8

Release NI

6
4

2
0

10

111213 141516

Capacitance Across Open Contacts

50

40

30

20

Percentage

10

0

.20

.21

*The Performance data shown in the graphs above is typical of device performance. For guaranteed parameters not indicated in the written specifications,
please contact our application department.

Mini-DYAD™

.22 .23

Capacitance (pF)

Operate NI

.25

.24

171819

.26

.27

Minimum
Maximum

.28 .29

20 21

.30

50

40

30

20

10

Percent Operate Increase

0

.722

Contact Resistance Throughout Life

450
400
350
300
250
200

150
100

50

Average Resistance (mOhms)

0

0

Mini-DYAD

Operate Shift After Lead Trim

.910

Overall Length in Inches

Mini-DYAD™

50V, 100mA Resistive Load

400 600 700 800 1000 1200

200

Operations (Thousands)

™

™

1.036 1.125

1.355

1400

Mini-DYAD™

Typical Contact Resistance

10V, 10mA Resistive Load

70

60

50

40
30

20
10

Average Resistance (mOhms)

0

0

102030 40 50 607080 90

Operations (Millions)

100

2.54 MAX.
(0.100)

2.29 MAX.
(0.090)

Mini-DYAD™

2.80 MAX.
(0.110)

10.00 MAX.
(0.395)

34.54 MAX.
(1.360)

+

12.34

(0.486)

Mechanical Dimensions

Mini-DYAD™ SMT

0.13 MIN.
(0.005)

10.00 MAX.
(0.395)

13.84

(0.545)

16.25 MAX.
(0.640)

0.38 MAX.
(R 0.015)

4 PLACES

o

+

10

1.02

(0.040)

MAX. TWIST ALLOWED

TYP. BOTH ENDS

o

+

5

2.80 MAX.

o

0.18

7

(0.007)

1.32 MAX.
(0.052)

(0.110)

1.32 MAX.
(0.052)

2.90 MAX.
(0.114)

1.52

(0.060)

Recommended Pad Sizes

TM

SMT

2.79

(0.110)

Dimensions

mm

(inches)

2.62

(0.100)

Mini Dyad

12.32 MAX.
(0.490)

Rev. 2

www.clare.com

3

Mini-Dyad

MN2

™

Tape & Reel Packaging

Tape and Reel Packaging for SMT CM10 Switch

Embossed Carrier

Top Cover
Tape Thickness
.10 MAX.
(.004)

Embossment

3.00 ± .10

(.118 ± .004)

(.0135 ± .0005)

Top Cover

Tape

.343 ± .013

(.559 ± .004)

2.29

(.090)

1.75 ± .10

(.069 ± .004)

14.20 ± .10

8¡ MAX

2.00 ± .10

(.079 ± .004)

8.00 ± .10

(.315 ± .004)

User Direction of Feed

1.91

(.075)

1.55 ± .05

(.061 ± .002)

3.00 ± .10

(.118 ± .004)

2.59 ± .10

(.102 ± .004)

4.00 ± .10

(.157 ± .004)

16.45 ± .10

(.649 ± .004)

9.27

(.365)

2.00 ± .25

(.079 ± .010)

32.00 ± .30

(1.260 ± .012)

Dimensions

mm

inches

4

www.clare.com

Rev. 2

Worldwide Sales Offices

CLARE LOCATIONS

Clare Headquarters
78 Cherry Hill Drive
Beverly, MA 01915
Tel: [phone]
Fax: [phone]
Toll Free: 1-800-27-CLARE

Clare Switch Division
4315 Earth City Expresssway
St. Louis, MO 63045
Tel: [phone]
Fax: [phone]

Clare Micronix Division
145 Columbia
Aliso Viejo, CA 92656-1490
Tel: [phone]
Fax: [phone]

SALES OFFICES

AMERICAS

Americas Headquarters

Clare
78 Cherry Hill Drive
Beverly, MA 01915
Tel: [phone]
Fax: [phone]
Toll Free: 1-800-27-CLARE

Eastern Region

Clare
P.O. Box 856
Mahwah, NJ 07430
Tel: [phone]
Fax: [phone]
Toll Free: 1-800-27-CLARE

Central Region

Clare Canada Ltd.
3425 Harvester Road, Suite 202
Burlington, Ontario L7N 3N1
Tel: [phone]
Fax: [phone]

Western Region

Clare
1852 West 11th Street, #348
Tracy, CA 95376
Tel: [phone]
Fax: [phone]
Toll Free: 1-800-27-CLARE

EUROPE

European Headquarters

CP Clare nv
Bampslaan 17
B-3500 Hasselt (Belgium)
Tel: [phone]
Fax: [phone]

France

Clare France Sales
Lead Rep
99 route de Versailles
91160 Champlan
France
Tel: [phone]
Fax: [phone]

Germany

Clare Germany Sales
ActiveComp Electronic GmbH
Mitterstrasse 12
85077 Manching
Germany
Tel: [phone]
Fax: [phone]

Italy

C.L.A.R.E.s.a.s.
Via C. Colombo 10/A
I-20066 Melzo (Milano)
Tel: [phone]
Fax: [phone]

Sweden

Clare Sales
Comptronic AB
Box 167
S-16329 Spånga
Tel: [phone]
Fax: [phone]

United Kingdom

Clare UK Sales
Marco Polo House
Cook Way
Bindon Road
Taunton
UK-Somerset TA2 6BG
Tel: [phone]
Fax: [phone]

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: [phone]
Fax: [phone]

http://www.clare.com

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 re­serves 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.

Canada

Clare Canada Ltd.
3425 Harvester Road, Suite 202
Burlington, Ontario L7N 3N1
Tel: [phone]
Fax: [phone]

Specification: PB-MN2-R2
©Copyright 2000
Ultra-Mini Dyad™, Mini Dyad™, and Dyad® are
trademarks of Clare, Inc.
All rights reserved. Printed in USA.
3/7/01