MK1

Meder Electronic
MK1 Series
Surface Mount
Reed Sensors
DESCRIPTION
The MK1 sensor offers a selection of magnetically
operated Reed proximity switches with J-lead
connections for SMD mounting. The sensors are
provided in the standard 32 mm tape according to
IEC 286 / part 3. Several AT ranges for the Pull-in /
Drop-out sensitivities are available. Low profile
packaging with a height of only 3.25 mm.
FEATURES
• Surface Mount Design
• Form C available
• High power switches available
• Four operate sensitivities available
APPLICATIONS
• Telecommunications
Hook switch sensor in mobile phones
• Microphones
On/off control switch
• Electronic PCB’s where all components are
surface mounted
• Connection detection in battery chargers
• Position detection
DIMENSIONS
SCHEMATIC DRAWING
All dimensions in mm [inches]
ORDER INFORMATION
SENSIT IVITY
CLASS
PULL IN
AT RANGE
B
10 - 15
C
15 - 20
D
20 - 25
E
25 - 30
SERIES
MAGNETIC
SENSITIVIT Y
MK1 -
X
OPTIONS
B, C, D, E
Part Number Example
MK1 - B
B is the magnetic sensitivity class
www.willow.co.uk
Tel. +44 (0) 1342 835234
Fax. +44 (0) 1342 834306
MK1 Series
Meder Electronic
Surface Mount
Reed Sensors
TAPE & REEL
All dimensions in mm [inches]
SOLDERING INFORMATION
All dimensions in mm [inches]
Recommended Pad Layout
www.willow.co.uk
Tel. +44 (0) 1342 835234
Fax. +44 (0) 1342 834306
Meder Electronic
MK1 Series
Surface Mount
Reed Sensors
CONTACT DATA
All data at 20 0 C
Contact Form -->
Contact Ratings
Conditions
Form A
Min.
Typ.
Max.
Units
Contact Rating
Any DC combination of V & A
not to exceed their individual
max.'s
10
W
Switching Voltage
DC or peak AC
200
V
Switching Current
DC or peak AC
0.5
A
Carry Current
DC or peak AC
1.25
A
Static Contact Resistance
w/ 0.5V & 10mA
150
mΩ
Dynamic Contact Resistance
Measured w/ 0.5V & 50mA
1.5 ms after closure
200
mΩ
Insulation Resistance across Contacts
100 Volts applied
1010 *
Ω
Breakdown Voltage across Contacts
Voltage applied for 60 sec.
min.
225 *
VDC
Operate Time, incl. Bounce
Measured w/ 100% overdrive
0.5
ms
Release Time
Measured w/ no coil
suppression
0.1
ms
Capacitance
@ 10kHz across contact
0.2
pF
Contact Operation **
Must Operate Condition
Steady state field
10
30
AT
Must Release Condition
Steady state field
04
27
AT
Environmental Data
Shock Resistance
1/2 sine wave duration 11ms
50
g
Vibration Resistance
From 10 - 2000 Hz
20
g
Ambient Temperature
10 0 C/ minute max. allowable
Storage Temperature
Soldering Temperature
0
10 C/ minute max. allowable
5 sec. dwell
-40
-50
130
0
130
0
260
0
C
C
C
Please note: The indicated electrical data are maximum values and can vary downwards when using a
more sensitive switch.
* Insulation Resistance of 1012 and a Breakdown voltage of 480 VDC version is available.
** These ranges refer to the uncut / unmodified Reed Switches described in our Reed Switch section. Consult
factory if more detail is required.
www.willow.co.uk
Tel. +44 (0) 1342 835234
Fax. +44 (0) 1342 834306