MDSM-DT Datasheet, PDF (1/3 Pages) HAMLIN Position and Movement Sensor Solutions – REED SWITCH

Surface Mount Reed Switches
Low Power > MDSM-DT
MDSM-DT 14.7mm Surface Mount Changeover Reed Switch
RoHS
Description
The MDSM-DT Reed Switch is a miniature, surface mounting, changeover switch
with a 14.73mm long x 2.54mm diameter (0.580” x 0.100”) glass envelope. It is
capable of switching 175Vdc at 5W. The MDSM-DT has an insulation resistance
of 10⁹ ohms minimum and contact resistance less than 100 milli-ohms. This reed
switch is a surface mount version of the MDRR-DT.
Agency Approvals
Agency Agency File Number
E47258
E471070
Ampere-Turns Range
15-30 AT
Features
• Surface mount SPDT
changeover switch
• Capable of switching 175Vdc or
0.25A at up to 5W
Benefits
• Hermetically sealed switch
contacts are not affected by and
have no effect on their external
environment
• Available sensitivity 15-30 AT
• Zero operating power required for
contact closure
• Excellent for switching
microcontroller logic level loads
DEMKO 14 ATEX 1393U
15-30 AT
Dimensions
Dimensions in mm (inch)
2.54±0.38
(.100±.015)
Ø0.56
(.022) _N.O.
N.C.
Ø0.56
(.022)
10.67±0.51
(.420±.020)
14.73
(.580)MAX
Ø2.54
(.100)MAX
COMMON
LEAD
CL OF OVERLAP
Ø0.51
(.020)
20.32±0.25
(.800±.010)
0.025
(.001)MIN
2.87
(.113)MAX
25.40±0.25
(1.000±.010)
RECOMMENDED LAND PATTERN
Note: Land pattern is Littelfuse recommendation only. User is responsible for proper PCB design.
19.30
3.50
Electrical Ratings ^(.760)
(.138)TYP
Applications
2.54±0.38
• Po^(.s¹i⁰ti⁰o^±n^.0S¹e⁵n⁾sing
• Lev^Ø(e_.0l⁰²S^.52e⁶⁾nsin_Ng _.O.
• Industrial Controls
N.C.
Switch Type Ø0.56
(.022)
10.67±0.51
(.420±.020)
14.73 ^•
(.580)MA•X
Office Eq_Øui₂p_.m₅₄ents
Mobile (P.1h0o0n)MesAX
COMMON
LEAD
CL OF OVERLAP
Ø0.51
(.020)
Contact Form
C (SPDT-CO)
Materials
0.025
(.0B0o1)dMyI:NGlass _2.87
20.32±_L0_e.2_a5_{ds: Tin-plated Ni-Fe}(.1_w13_i)_rM_eAX
(.800±.010)
Note: SPDT-CO = Single-Pole, Dou²bl⁵e^.-⁴T⁰h^±ro⁰w^.2,⁵Change-Over
(1.000±.010)
RECOMMENDED LAND PATTERN
19.30
(.760)
3.50
(.138)TYP
0.51
0.94 _(.020)
(.037)
1.60
(.063)TYP
Contact Rating ¹
0.51
Voltage ³
0.94 _(.020)
(.037)
Current ³
Resistance
1.60
(_S.0_w63_i)_tT_cY_hP_{ing 2}
Breakdown ⁴
Switching ²
Carry
Contact, Initial Insulation
W/VA - max.
Vdc - max.
Vac - max.
Vdc - min.
Adc - max.
Aac - max.
Adc - max.
Ω - max.
Ω - min.
5
175
120
200
0.25
0.18
1.50
0.100
10⁹
Capacitance
Contact
pF - typ.
1.0
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.
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Specifications are subject to change without notice.
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