Reed Technology Solutions Product Spotlight REED RELAYS REED SENSORS REED SWITCHES MK24 Series Surface Mount Reed Sensors DESCRIPTION The MK24 Series are 5mm ultraminiature high performance non- • Ultra-miniature size conquers space contact Reed Sensors which are especially suitable for low power limitations allowing high density board applications. population • Available in SPST-NO (Form A) and FEATURES Ultra-miniature size (5mm) SPST-NC (Form B) Hermetically sealed • 3 surface mount lead design options Dynamically tested contacts Millions of reliable operations N.O. (Form A) & N.C. (Form B) NEW! FORM B Versions • Available in multiple sensitivity ranges 3 lead designs (AT) Five different sensitivity ranges • Suitable for low power miniature Suitable for low power No external power required devices Tape & Reel packaging (IEC • No external power required for 60286-3) Suitable for automatic pick and place RoHS compliant operation Performance Beyond All Other Reed Sensors In Its Size Class! APPLICATIONS Contactless sensors Low power miniature devices The MK24 Series achieve a minimum life expectancy of Choose from 3 surface mount lead designs in a Position sensor 50 million operations at 5V, 5mA, 100Hz while measuring SPST-NO (Form A) version: lead design 1 (straight Limit switch only 5mm x 1.8mm x 2.2mm. Though ultra miniature, the cut axial lead), lead design 2 (Gull Wing) and lead Space limited MK24 is constructed of a rugged overmolded package design 3 (J Lead). The MK24 is also available in lead containing the hermetically sealed 4mm KSK-1A04 reed design 2 or 3 in a SPST-NC (Form B) version. The switch. These sensors are used as a control switch or normally open (Form A) version sensors come in 5 non-contact magnetic proximity sensor for counting, contact sensitivity ranges (A, B, C, D, & E), while the pumps, hearing aids, pace position, limit and liquid level detection applications. normally closed (Form B) version is available in a B makers) In addition to their high performance and ultra miniature sensitivity only, (refer to sensitivity specification on size, the MK24 require no external power to operate page 2 & 3). making them especially suitable in applications with low The MK24 surface mount sensors are all provided in power and space limitation requirements such as in Tape and Reel packaging suitable for pick and place portable medical and electronic devices. automation. Consider the MK24 Series Reed Hand-held devices Cell phones Notebook computers Medical devices (i.e. insulin MARKETS Automotive, Aviation, Marine, Telecommunications, Security Test & Measurement, Household Sensors for your next green mechatronic design. Medical, Computer MEDER electronic | www.meder.com | August, 2010 Page 1 of 3 [Type text] Reed Technology Solutions Product Spotlight REED RELAYS REED SENSORS REED SWITCHES MK24 SERIES (FORM A) CONTACT DATA BY SENSITIVITY CLASS Contact Form → 1 Form A (Normally Open) Part Number Example All Data at 20° C MK24 – B – 2 Contact Ratings Conditions A B C D E Unit Rated Power (max.) Any DC combination of V & A not to exceed their individual max.’s 1* 3* 3* 3* 3* W Switching Voltage (max.) DC or peak AC 30 30 30 30 30 V Switching Current (max.) DC or peak AC 0.1 0.3 0.3 0.3 0.3 A Carry Current (max.) DC or peak AC Measured with 40% overdrive Start value 0.3 0.5 0.5 0.5 0.5 A 250 200 200 200 200 mΩ 9 9 9 9 9 B Is the magnetic sensitivity class 2 is the lead design Sensitivity Class Static Contact Resistance (max.) Insulation Resistance (min.) RH <45%, 100V test voltage 10 10 10 10 10 Ω Breakdown Voltage (min.) According to IEC 255-5 60 100 100 100 100 VDC Operate Time incl. Bounce (max.) Measured with 40% overdrive 0.25 0.2 0.2 0.2 0.2 ms Release Time (max.) Measured with no coil excitation 0.15 0.15 0.15 0.15 0.15 ms Capacitance (typ.) At 10kHz across open switch 0.1 0.1 0.1 0.1 0.1 pF Contact Operation Recommended Reflow Profile Pull-In (Test coil MS-150) Lead Option 1 & 2 22-55 37-71 50-86 61-100 71-114 AT Pull-In (Standard Helmholtz Coil) Lead Option 1 & 2 1.8-4.5 3.0-5.8 4.1-7.0 5.0-8.2 5.9-9.2 mT Pull-In (Test coil MS-150) Lead Option 3 23-50 33-67 40-83 46-98 50-112 AT Pull-In (Standard Helmholtz Coil) Lead Option 3 2.1-5.3 3.3-7.0 4.3-8.6 5.1-10.0 5.8-11.4 mT Environmental Data Shock Resistance (max.) ½ sine wave duration 11ms 30 30 30 30 30 g Vibration Resistance (max.) From 10-1200 Hz 20 20 20 20 20 g Operating Temperature 10°C/ minute max. allowable -40 up to + 130 °C Storage Temperature 10°C/ minute max. allowable -50 up to + 130 °C Soldering Temperature (max.) See recommended reflow profile 260 260 260 260 260 °C * The indicated electrical data are maximum values and can vary downwards when using a more sensitive switch. DIMENSIONS FORM A VERSIONS Request Samples Today! Visit our website: www.meder.com MEDER electronic | www.meder.com | August, 2010 Page 2 of 3 [Type text] Reed Technology Solutions Product Spotlight REED RELAYS REED SENSORS REED SWITCHES MK24 SERIES (FORM B) CONTACT DATA BY SENSITIVITY CLASS Contact Form → Part Number Example 1 Form B (Normally Closed) All Data at 20° C Sensitivity Class Contact Ratings Conditions B Unit Rated Power (max.) Any DC combination of V & A not to exceed their individual max.’s 3* W B Is the magnetic sensitivity class Switching Voltage (max.) DC or peak AC 30 V 2 is the lead design Switching Current (max.) DC or peak AC 0.3 A OE is the normally closed contact Carry Current (max.) A Static Contact Resistance (max.) DC or peak AC Measured with 40% overdrive Start value 0.5 version (Form B) 200 mΩ MK24 – B – 2 – OE 9 Insulation Resistance (min.) RH <45%, 100V test voltage 10 Ω Breakdown Voltage (min.) According to IEC 255-5 100 VDC Operate Time incl. Bounce (max.) Measured with 40% overdrive 0.2 ms Release Time (max.) Measured with no coil excitation 0.15 ms Capacitance (typ.) At 10kHz across open switch 0.1 pF 15-30 AT Contact Operation Recommended Reflow Profile Pull-In (Test coil MS-150) Lead Option 2 & 3 Environmental Data Shock Resistance (max.) ½ sine wave duration 11ms 30 g Vibration Resistance (max.) From 10-1200 Hz 20 g Operating Temperature 10°C/ minute max. allowable -40 up to + 130 °C Storage Temperature 10°C/ minute max. allowable -50 up to + 130 °C Soldering Temperature (max.) See recommended reflow profile 260 °C * The indicated electrical data are maximum values and can vary downwards when using a more sensitive switch. DIMENSIONS FORM B VERSIONS Request Samples Today! Visit our website: www.meder.com NOTE: Marking on top corresponds to North Pole of the internal magnet. MEDER electronic | www.meder.com | August, 2010 Page 3 of 3