Littelfuse PCB Surface Mount Reed Switch 0.25 A 175 V
- RS Stock No.:
- 905-8900
- Mfr. Part No.:
- MDSM-10R-20-25
- Brand:
- Littelfuse
Subtotal (1 bag of 5 units)*
£4.19
(exc. VAT)
£5.03
(inc. VAT)
FREE delivery for orders over £60.00
In Stock
- 450 unit(s) ready to ship
- Plus 10 unit(s) ready to ship from another location
- Plus 970 unit(s) shipping from 08 May 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Bag* |
|---|---|---|
| 5 + | £0.838 | £4.19 |
*price indicative
- RS Stock No.:
- 905-8900
- Mfr. Part No.:
- MDSM-10R-20-25
- Brand:
- Littelfuse
Specifications
Technical Reference
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 | 0.25A | |
| Maximum Switching Power | 5W | |
| Maximum Switching Voltage | 175V | |
| Contact Resistance | 120mΩ | |
| Contact Material | Nickel Iron Alloy | |
| Maximum Release Time | 1ms | |
| Operating Time Including Bounce | 0.7ms | |
| Terminal Type | Wire | |
| AT Value Range | 20 to 25 AT | |
| Mount Type | PCB | |
| Minimum Operating Temperature | -40°C | |
| Maximum Operating Temperature | 105°C | |
| Length | 10.16mm | |
| Standards/Approvals | UR | |
| Series | MD-SM | |
| Select all | ||
|---|---|---|
Brand Littelfuse | ||
Product Type Surface Mount Reed Switch | ||
Maximum Switching Current 0.25A | ||
Maximum Switching Power 5W | ||
Maximum Switching Voltage 175V | ||
Contact Resistance 120mΩ | ||
Contact Material Nickel Iron Alloy | ||
Maximum Release Time 1ms | ||
Operating Time Including Bounce 0.7ms | ||
Terminal Type Wire | ||
AT Value Range 20 to 25 AT | ||
Mount Type PCB | ||
Minimum Operating Temperature -40°C | ||
Maximum Operating Temperature 105°C | ||
Length 10.16mm | ||
Standards/Approvals UR | ||
Series MD-SM | ||
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
Related links
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