MDRR-DT Datasheet, PDF (1/3 Pages) HAMLIN Position and Movement Sensor Solutions – Miniature changeover switch with 14.73mm x 2.54mm

Axial Lead Reed Switches
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MDRR-DT 14.7mm Miniature Changeover Reed Switch
RoHS
Description
The MDRR-DT Reed Switch is a miniature changeover switch with a 14.73mm
long x 2.54mm diameter (0.580” x 0.100”) glass envelope, capable of switching
175Vdc at 5W. It has insulation resistance of 10⁹ ohms minimum, and contact
resistance less than 100 milli-ohms. The MDRR-DT is available in surface mount
version, that is, MDSM-DT.
Features
• Miniature SPDT changeover switch
• Capable of switching 175Vdc or
0.25A at up to 5W
• Available sensitivity range
10-30 AT
Agency Approvals
Agency
Agency File Number Ampere-Turns Range
E47258
E471070
DEMKO 14 ATEX 1393U
10-30 AT
10-30 AT
Dimensions
Dimensions in mm (inch)
F - Formed
CL OF OVERLAP
0.20
0.55
(.008)
(.022)
MIN.
MAX.
AT
1.6
FROM
SEAL
2XØ0.56 REF.
(.022)
N.O.
2.54 REF. (.100) _N.C.
4.57 REF.
(.180)
28.32 REF.
(1.115)
2.54 MAX. Ø0.51 REF.
(.100)
(.020)
COMMON
1.57 (.062) REF.
14.73 MAX.
(.580)
17.78 MIN.
(.700)
51.66 REF.
(2.034)
U - Unformed
0.80 REF.
(.031)
N.O.
N.C.
Electrical Ratings
52.48 REF.
(2.066)
Benefits
• Hermetically sealed switch
contacts are not affected by and
have no effect on their external
environment
• Can be used as changeover or
normally closed contact
• Zero operating power required for
contact closure
• Excellent for switching
microcontroller logic level loads
Applications
• Position Sensing
• Reed Relays
• Industrial Controls
• Office Equipments
• Home Appliances
• Security
Switch Type
Contact Form
C (SPDT-CO)
Materials
Body: Glass
Leads: Tin-plated Ni-Fe wire
Note: SPDT-CO = Single-Pole, Double-Throw, Change Over
Contact Rating ¹
W/VA - max.
5
Voltage ³
Current ³
Switching ²
Vdc - max.
175
Vac - max.
120
Breakdown ⁴
Vdc - min.
200
Switching ²
Adc - max.
0.25
Aac - max.
0.18
Carry
Adc - max.
1.50
Resistance
Contact, Initial
Insulation
Ω - max.
Ω - min.
0.100
10⁹
Capacitance
Contact
pF - typ.
1
Temperature
Operating
Storage ⁵
°C
-40 to +125
°C
-65 to +125
Notes:
1. Contact rating - Product of the switching voltage and current should never exceed the wattage rating. Contact Littelfuse for additional load/life information.
2. When switching inductive and/or capacitive loads, the effects of transient voltages and/or currents should be considered. Refer to Application Notes AN108A and AN107 for details.
3. Electrical Load Life Expectancy - Contact Littelfuse with voltage, current values along with type of load.
4. Breakdown Voltage - per MIL-STD-202, Method 301.
5. Storage Temperature - Long time exposure at elevated temperature may degrade solderability of the leads.
© 2015 Littelfuse
Specifications are subject to change without notice.
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