Littelfuse MDSR-7.

Switch Reed N.O. 0.5A 200VDC 10VA 0.6ms 100mOhm

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

Reed contact [Hamlin] MDSR-7 Reed contact

Reed Switch; Circuitry:SPST-NO; Switching Voltage Max:200VDC; Body Length:0.500"; Breakdown Voltage Min:250VDC; Carry Current:0.8A; Contact Rating:10W; External Depth:0.071"; Leaded Process Compatible:Yes; Mounting Type:Thru-Hole ;RoHS Compliant: Yes

REED SWITCH, NO, 200VDC, 0.8A, 10W; Contact Configuration:SPST-NO; Switching Power Max:10W; Contact Current Max:800mA; Contact Resistance Max:100mohm; Operation Ampere Turns Range:10AT to 25AT; Body Material:Glass; Contact Configuration:SPST-NO; Contact Current DC Max:500mA; Contact Current Max:800mA; Contact Resistance:100mohm; Contact Type:NO (Form A); External Depth:1.8mm; External Length / Height:12.7mm; Insulation Resistance:1000Gohm; Operating Temperature Max:125°C; Operating Temperature Min:-40°C; Series:MDSR; Switching Current AC Max:0.5A; Switching Current DC Max:0.5A; Switching Voltage AC / DC Max:200VDC; Switching Voltage Max:200VDC; Terminal Type:Axial Leaded