www.hamlin.com
MDSR-7 Features and Benefits
Features
? Sub-miniature normally open
switch with 12.7mm x 1.8mm
(0.500” x 0.071”) glass envelope
? Capable of switching 200Vdc at
up to 10 Watts
Benefits
? Hermetically sealed switch contacts
are not effected by and have no
effect on their external environment
? Low, stable contact resistance
? Low space requirement
Applications
? Reed relays (particularly suited
to ATE type applications)
? Security
? Limit switching
? Telephone hook switch
?
10 12 Ohms insulation resistance
? Zero operating power required
? Available sensitivity range
10-25 AT
? Surface mount version available
for contact
? Fit and forget durability
? Well suited to signal switching
applications
DIMENSIONS (in) mm
Switch Type
Contact Form
Underwriters Laboratories Recognised, File E47258 (see note 1)
ELECTRICAL RATINGS
MDSR-7
A
Contact Rating (2)
Watt - max.
10
Voltage
Current
Resistance
Capacitance
Temperature
Switching
Breakdown
Switching
Carry
Contact, Initial
Insulation
Contact
Operating
Storage (6)
Vdc - max.
Vdc - min.
A - max.
A - max.
? - max.
? - min.
pF - typ.
°C
°C
200
250
0.5
0.8
0.100
10 12
0.3
-40 to +125
-65 to +125
OPERATING CHARACTERISTICS
Operate Time (3)
Release Time (3)
ms - max.
ms - max.
0.6
0.2
Shock
Vibration
Resonant Frequency
11ms 1 ? 2 sine wave
50-2000 Hertz
G - max.
G - max.
Hz - typ.
100
30
5500
MAGNETIC CHARACTERISTICS
Pull-In Range (4)
Rating Sensitivity (5)
Test Coil
Ampere Turns
Ampere Turns
10-25
20
L4989
Notes
1)
2)
3)
For details on electrical specifications, contact Hamlin.
Contact rating-Product of the switching voltage and current should never exceed the
wattage rating.
Contact Hamlin for additional load/life information.
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.
Hamlin USA
Hamlin UK
Hamlin Germany
Hamectrol France
Tel:
Tel:
Tel:
Tel:
+1 920 648 3000 ? Fax: +1 920 648 3001 ? Email: sales.us@hamlin.com
+44 (0)1379 649700 ? Fax: +44 (0)1379 649702 ? Email: sales.uk@hamlin.com
+49 (0) 6181 953660 ? Fax: +49 (0) 6181 9536666 ? Email: sales.de@hamlin.com
+33 (0) 1 6047 3000 ? Fax: +33 (0) 1 6015 9136 ? Email: sales.fr@hamlin.com
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.
ISSUE No: 4 DATE: 1/5/3
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