Littelfuse PCB Surface Mount Reed Switch 0.5 A 200 V
- RS Stock No.:
- 905-8904
- Mfr. Part No.:
- MDSM-4R-12-18
- Manufacturer:
- Littelfuse
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Subtotal (1 bag of 5 units)*
PHP384.71
(exc. VAT)
PHP430.875
(inc. VAT)
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In Stock
- Plus 4,230 unit(s) shipping from April 27, 2026
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Units | Per Unit | Per Bag* |
|---|---|---|
| 5 - 495 | PHP76.942 | PHP384.71 |
| 500 + | PHP74.632 | PHP373.16 |
*price indicative
- RS Stock No.:
- 905-8904
- Mfr. Part No.:
- MDSM-4R-12-18
- Manufacturer:
- Littelfuse
Specifications
Technical data sheets
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Littelfuse | |
| Product Type | Surface Mount Reed Switch | |
| Maximum Switching Current | 0.5A | |
| Maximum Switching Power | 10W | |
| Maximum Switching Voltage | 200V | |
| Contact Resistance | 100mΩ | |
| Contact Material | Nickel Iron Alloy | |
| Maximum Release Time | 0.1ms | |
| Operating Time Including Bounce | 0.5ms | |
| AT Value Range | 12 to 18 AT | |
| Terminal Type | Wire | |
| Mount Type | PCB | |
| Minimum Operating Temperature | -40°C | |
| Maximum Operating Temperature | 105°C | |
| Series | MD-SM | |
| Standards/Approvals | UR | |
| Length | 15.24mm | |
| Select all | ||
|---|---|---|
Brand Littelfuse | ||
Product Type Surface Mount Reed Switch | ||
Maximum Switching Current 0.5A | ||
Maximum Switching Power 10W | ||
Maximum Switching Voltage 200V | ||
Contact Resistance 100mΩ | ||
Contact Material Nickel Iron Alloy | ||
Maximum Release Time 0.1ms | ||
Operating Time Including Bounce 0.5ms | ||
AT Value Range 12 to 18 AT | ||
Terminal Type Wire | ||
Mount Type PCB | ||
Minimum Operating Temperature -40°C | ||
Maximum Operating Temperature 105°C | ||
Series MD-SM | ||
Standards/Approvals UR | ||
Length 15.24mm | ||
MDSM Surface Mount Reed Switch, Low Power
These surface-mount reed switches can switch 200 V dc at 10 W. They have a low electrical footprint and require zero operating power to close the contacts. These units are hermetically sealed and with magnetically operated contacts they are highly resilient to contamination. Even operating in conditions long after optical and other technology reed switches would have failed. They have Form A (SPST normally open) contacts.
Item 905-8900 has a glass envelope measuring 10.16 x 1.8 mm and has an AT 20-25 sensitivity rating.
Item 905-8904 has a glass envelope measuring 15.24 x 2.28 mm and has an AT 12-18 sensitivity rating.
Potential Applications
Position Sensing
Level sensing
Industrial Controls
Security
Limit Switching
Office Equipment
Metering
Features
Surface mounting normally open switch
Capable of switching 200 V dc or 0.5 A at up to 10 W
Low, stable contact resistance
Operating temperature range: -40°C to +125°C
Littelfuse
Standards
UL, ATEX Class I, Zone 2