Axial Lead Reed Switches
Low Power > MDCG-4
MDCG-4 15.3mm Sub-miniature Reed Switch
RoHS
Description
The MDCG-4 Reed Switch is a sub-miniature, normally open switch with a
15.24mm long x 2.28mm diameter (0.600” x 0.090”) glass envelope, capable of
switching 200Vdc at 10W. It has high insulation resistance of 1010 ohms
minimum and contact resistance less than 100 milli-ohms. This reed switch is
also available in a surface mount version, that is, MDSM-4.
Features
• Sub-miniature normally
open switch
• Capable of switching 200Vdc or
0.5A at up to 10W
• Available sensitivity 12-38 AT
Agency Approvals
Benefits
• Zero operating power required for
contact closure
• Excellent for switching micro-
controller logic level loads
• Hermetically sealed switch
contacts are not affected by and
have no effect on their external
environment
Agency
Agency File Number
Ampere-Turns Range
E47258
E471070
12-38 AT
12-38 AT
DEMKO 14 ATEX 1393U
Applications
• Reed Relays
• Security
• Limit Switching
• Level Sensing
• Office Equipment
• Industrial Control
Dimensions
Dimensions in mm (inch)
0.50
CL OF OVERLAP
(.020) DIA. REF.
Switch Type
20.19
2.28
(.795) REF.
Contact Form
A (SPST-NO)
(.090) DIA. MAX.
Body: Glass
Leads: Tin-plated Ni-Fe wire
Materials
Note: SPST-NO = Single-pole, single-throw, normally open
12.19
15.24
(.480) MIN.
(.600) MAX.
40.38
(1.590) NOM.
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.
0.50
0.35
1.20
Carry
Contact, Initial
Insulation
Contact
Operating
Storage 5
Ω - max.
Ω - min.
pF - typ.
0.100
Resistance
Capacitance
Temperature
Notes:
1010
0.2
-40 to +125
-65 to +125
°C
°C
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.