INFORMATION PROVIDED ON THIS DATA SHEET IS PROVIDED FOR INFORMATION PURPOSES ONLY AND SHOULD NOT BE RELIED UPON AS BEING ACCURATE FOR ANY
PARTICULAR PURPOSE. Product performance may be affected by the application to which the product is applied. Upon request, HAMLIN will assist purchasers by providing information
specific to any particular application. HAMLIN disclaims any and all liability whatsoever for any purchaser’s reliance upon the information contained on this data sheet without further
consultation with authorised representatives of HAMLIN.
MDRR-DT Features and Benefits
DIMENSIONS (in) mm
Notes 1) For details on electrical specifications, contact Hamlin.
2) Contact rating-Product of the switching voltage and current should never exceed the
wattage rating.
Contact Hamlin for additional load/life information.
3) Operate (inc. bounce) /Release Time-per EIA/NARM RS421A, diode suppressed coil.
4) Pull in Range-Contact Hamlin for tolerances available within this range.
5) Rating Sensitivity-The value at which contact ratings and operating characteristics are
determined. Derating may be required below this value.
6) Storage Temperature-Long time exposure at elevated temperature may degrade
solderability of the leads.
Features
•Miniature changeover switch
with 14.73mm x 2.54mm (0.580”
x 0.100”) glass envelope
•Capable of switching 175Vdc at
up to 5 Watts
•Minimum voltage breakdown 200
Vdc
•109Ohms insulation resistance
•Available sensitivity range 15-30 AT
Benefits
•Hermetically sealed switch contacts
are not effected by and have no effect
on their external environment
•Can be used as changeover or
normally closed contact
•Low, stable contact resistance
•Low space requirement
•Zero operating power required for
contact closure
•Fit and forget durability
Applications
•Reed relays
•Limit switching
•Telecoms applications
•Office equipment
•Automotive applications
Hamlin USA Tel: +1 920 648 3000 •Fax: +1 920 648 3001 •Email: sales.us@hamlin.com
Hamlin UK Tel: +44 (0)1379 649700 •Fax: +44 (0)1379 649702 •Email: sales.uk@hamlin.com
Hamlin Germany Tel: +49 (0) 6142 923920 • Fax: +49 (0) 6142 923921 • Email: sales.de@hamlin.com
Hamectrol France Tel: +33 (0) 1 6047 3000 • Fax: +33 (0) 1 6015 9136 • Email: sales.fr@hamlin.com
Switch Type MDRR-DT
Contact Form C
Underwriters Laboratories Recognised, File E47258 (see note 1)
ELECTRICAL RATINGS
Contact Rating (2) Watt - max. 5
Voltage Switching Vdc - max. 175
Breakdown Vdc - min. 200
Current Switching A - max. 0.25
Carry A - max. 1.5
Resistance Contact, Initial Ω- max. 0.100
Insulation Ω- min. 109
Capacitance Contact pF - typ. 1.0
Temperature Operating °C -40 to +125
Storage (6) °C -65 to +125
OPERATING CHARACTERISTICS
Operate Time (3) ms - max. 0.7
Release Time (3) ms - max. 1.0
Shock 11ms 1⁄2sine wave G - max. 50
Vibration 50-2000 Hertz G - max. 30
Resonant Frequency Hz - typ. 11000
MAGNETIC CHARACTERISTICS
Pull-In Range (4) Ampere Turns 15-30
Rating Sensitivity (5) Ampere Turns 20
Test Coil L4989
www.hamlin.com
ISSUE No: 4 DATE: 1/5/3
