Datasheet

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Specifications are subject to change without notice.
MDSR-10 10.2mm Sub-miniature Reed Switch
Description
The MDSR-10 Reed Switch is a sub-miniature, normally open switch with a
10.16mm long x 1.80mm diameter (0.400” x 0.071”) glass envelope, capable of
switching 200Vdc at 10W. It has high insulation resistance of 10¹² ohms
minimum and low contact resistance of less than 120 milli-ohms. This reed
switch is also available in a surface mount version, that is, MDSM-10.
Agency Approvals
Agency Agency File Number Ampere-Turns Range
E47258
E471070
10-25 AT
DEMKO 14 ATEX 1393U 10-25 AT
Switch Type
Contact Form A (SPST-NO)
Materials
Body: Glass
Leads: Tin-plated Ni-Fe wire
Axial Lead Reed Switches
Features
• Sub-miniature normally
open switch
• Capable of switching 200Vdc or
0.5A at up to 10W
• 10
12
Ohms insulation resistance
• Available sensitivity range
10-25 AT
Benefits
• Hermetically sealed switch
contacts are not affected by and
have no effect on their external
environment
• Low space requirement
• Zero operating power required
for contact
• Excellent for switching
microcontroller logic level loads
Applications
• Reed Relays (particularly suited
to ATE type applications)
• Security Systems
• Limit Switching
• Office Equipments
Dimensions
Dimensions in mm (inch)
Low Power > MDSR-10
RoHS
Note: SPST-NO = Single-pole, single-throw, normally open
Electrical Ratings
Contact Rating
1
W/VA - max. 10
Voltage
3
Switching
2
Breakdown
4
Vdc - max.
Vac - max.
Vdc - min.
200
140
250
Current
3
Switching
2
Carry
Adc - max.
Aac - max.
Adc - max.
0.50
0.35
1.00
Resistance
Contact, Initial
Insulation
Ω - max.
Ω - min.
0.120
10
12
Capacitance Contact pF - typ. 0.2
Temperature
Operating
Storage
5
°C
°C
-40 to +125
-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.
CL OF OVERLAP
20.19
(.795) REF.
14.39
(.595) MIN.
10.16
(.400) MAX.
40.38
(1.590) NOM.
1.80
(.071) MAX.
0.43
(.01
7) DIA. REF.