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MDSR-7-10-15 [LITTELFUSE]

Dry Reed Switch, SPST, 0.5A, 200VDC, Through Hole-straight,;
MDSR-7-10-15
型号： MDSR-7-10-15
厂家： LITTELFUSE    LITTELFUSE
描述：

Dry Reed Switch, SPST, 0.5A, 200VDC, Through Hole-straight,

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Axial Lead Reed Switches  
Low Power > MDSR-7  
MDSR-7 12.7mm Sub-miniature Reed Switch  
RoHS  
Description  
The MDSR-7 Reed Switch is a sub-miniature, normally open switch with a  
12.70mm long x 1.80mm diameter (0.500” 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 100 milli-ohms.  
Features  
• Sub-miniature normally open  
switch  
• Available sensitivity range  
10-25 AT  
• Capable of switching 200V or 0.5A  
at up to 10W  
Agency Approvals  
Benefits  
• Hermetically sealed switch  
contacts are not affected by and  
have no effect on their external  
environment  
• Zero operating power required  
for contact  
• Excellent for switching micro-  
controller logic level loads  
Agency  
Agency File Number  
Ampere-Turns Range  
E47258  
E471070  
10-25 AT  
10-25 AT  
• Low, stable contact resistance  
DEMKO 14 ATEX 1393U  
Applications  
• Reed Relays (particularly suited  
to ATE type applications)  
• Security Systems  
• Limit Switching  
• Office Equipment  
Dimensions  
Dimensions in mm (inch)  
20.19  
(.795) REF.  
0.47  
1.80  
Switch Type  
CL OF OVERLAP  
(0.185) DIA. REF.  
(.071) MAX.  
Contact Form  
A (SPST-NO)  
13.46  
(.530) MIN.  
12.70  
(.500) MAX.  
Body: Glass  
Leads: Tin-plated Ni-Fe wire  
Materials  
40.38  
(1.590) NOM.  
Note: SPST-NO = Single-pole, single-throw, normally open  
Electrical Ratings  
Contact Rating 1  
W/VA - max.  
10  
Switching 2  
Vdc - max.  
Vac - max.  
Vdc - min.  
200  
140  
250  
Voltage 3  
Current 3  
Breakdown 4  
Switching 2  
Adc - max.  
Aac - max.  
Adc - max.  
0.5  
0.35  
0.80  
Carry  
Contact, Initial  
Insulation  
Ω - max.  
Ω - min.  
0.100  
1012  
Resistance  
Capacitance  
Temperature  
Notes:  
Contact  
pF - typ.  
0.3  
Operating  
Storage 5  
°C  
°C  
-40 to +125  
-65 to +125  
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  
Revised: 10/09/15  
littelfuse.com  
Specifications are subject to change without notice.  
Axial Lead Reed Switches  
Low Power > MDSR-7  
MDSR-7 12.7mm Sub-miniature Reed Switch  
Product Characteristics  
Operating Characteristics  
Operate Time 1  
Release Time 1  
0.6ms - max.  
0.2ms - max.  
100G - max.  
30G - max.  
Shock 2  
11ms 1∕2 sine wave  
50-2000 Hertz  
Vibration 2  
Resonant Frequency  
5.5kHz - typ.  
Magnetic Characteristics  
Pull-In Range 3  
Ampere Turns  
Ampere Turns  
10-25  
Rating Sensitivity 4  
Test Coil  
20  
L4989  
Notes:  
1. Operate (including bounce)/Release Time - per EIA/NARM RS-421-A,diode suppressed coil (Coil II).  
2. Shock and Vibration - per EIA/NARM RS-421-A and MIL-STD-202.  
3. Pull-In Range - Contact Littelfuse for narrower AT ranges available.  
4. Rating Sensitivity - The value at which contact ratings and operating characteristics are determined. Derating may be required below this value.  
5. Custom modifications of forming and/or cutting of reed switches are available. Please contact Littelfuse.  
Drop-Out vs. Pull-In Chart  
Part Numbering System  
25  
MDSR-7-10-15  
20  
15  
10  
Max.  
Min.  
Series  
AT Range  
10-25 AT  
10-15 AT  
15-20 AT  
20-25 AT  
Example:  
10-15 AT product is  
MDSR-7-10-15  
5
0
Note: These AT values are the before-modification values of the bare reed switch.  
0
5
10  
15  
20  
25  
30  
35  
Pull-In (AT, L4989 Coil)  
Note: Chart represents the range of Drop-Out, min to max for a given Pull-In value.  
Packaging  
Packaging Option  
Packaging Specification  
Quantity  
Quantity & Packaging Code  
Taping Width  
Bulk  
Bulk  
1000  
N/A  
N/A  
© 2015 Littelfuse  
Revised: 10/09/15  
littelfuse.com  
Specifications are subject to change without notice.  

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