M MartinTT New Member Jan 23, 2024 #1 Hello here, i have a problem identifying three legged component on automatic PIR light switch, it’s capacitor or something exotic? many thanks Attachments 48D7AC9E-C72B-4F5B-93A5-716EED37A1FA.jpeg 198.4 KB · Views: 102
Hello here, i have a problem identifying three legged component on automatic PIR light switch, it’s capacitor or something exotic? many thanks
Solution AnalogKid Jan 23, 2024 Looks like a PolySwitch, a positive temperature coefficient resistor that acts as a self-resetting fuse. Or, could be two back-to-back Y capacitors as part of a power line filter (although I've not seen one). ak
Looks like a PolySwitch, a positive temperature coefficient resistor that acts as a self-resetting fuse. Or, could be two back-to-back Y capacitors as part of a power line filter (although I've not seen one). ak
Nigel Goodwin Super Moderator Most Helpful Member Jan 25, 2024 #21 MartinTT said: https://m.littelfuse.com/media?resourcetype=datasheets&itemid=f5807569-0c49-445b-857a-8272c5b2f3d7&filename=littelfuse-varistor-lvm2p-catalog-datasheet Click to expand... Right, so not just a polyswitch, it's a MOV as well - so presumably it's had a high voltage up it, and blown the MOV?. Upvote 0 Downvote
MartinTT said: https://m.littelfuse.com/media?resourcetype=datasheets&itemid=f5807569-0c49-445b-857a-8272c5b2f3d7&filename=littelfuse-varistor-lvm2p-catalog-datasheet Click to expand... Right, so not just a polyswitch, it's a MOV as well - so presumably it's had a high voltage up it, and blown the MOV?.
M MartinTT New Member Jan 25, 2024 #22 Right, so not just a polyswitch, it's a MOV as well - so presumably it's had a high voltage up it, and blown the MOV?. Nigel Goodwin said: Right, so not just a polyswitch, it's a MOV as well - so presumably it's had a high voltage up it, and blown the MOV?. Click to expand... exactly Upvote 0 Downvote
Right, so not just a polyswitch, it's a MOV as well - so presumably it's had a high voltage up it, and blown the MOV?. Nigel Goodwin said: Right, so not just a polyswitch, it's a MOV as well - so presumably it's had a high voltage up it, and blown the MOV?. Click to expand... exactly
Nigel Goodwin Super Moderator Most Helpful Member Jan 25, 2024 #23 MartinTT said: Right, so not just a polyswitch, it's a MOV as well - so presumably it's had a high voltage up it, and blown the MOV?. exactly Click to expand... So was it killed by lightning? Upvote 0 Downvote
MartinTT said: Right, so not just a polyswitch, it's a MOV as well - so presumably it's had a high voltage up it, and blown the MOV?. exactly Click to expand... So was it killed by lightning?
AnalogKid Well-Known Member Most Helpful Member Jan 25, 2024 #24 MartinTT said: https://m.littelfuse.com/media?resourcetype=datasheets&itemid=f5807569-0c49-445b-857a-8272c5b2f3d7&filename=littelfuse-varistor-lvm2p-catalog-datasheet Click to expand... Learn something new every day. I'm not a big fan of MOV's, but an exact replacement is on the shelf at Digi-Key. https://www.digikey.com/en/products/detail/littelfuse-inc/LVM2P-015R10431/3837637 ak Last edited: Jan 25, 2024 Upvote 0 Downvote
MartinTT said: https://m.littelfuse.com/media?resourcetype=datasheets&itemid=f5807569-0c49-445b-857a-8272c5b2f3d7&filename=littelfuse-varistor-lvm2p-catalog-datasheet Click to expand... Learn something new every day. I'm not a big fan of MOV's, but an exact replacement is on the shelf at Digi-Key. https://www.digikey.com/en/products/detail/littelfuse-inc/LVM2P-015R10431/3837637 ak
AnalogKid Well-Known Member Most Helpful Member Jan 25, 2024 #25 MartinTT said: ok thank you to everybody, it’s resettable polyswitch, but can’t figure out which one Click to expand... Page 4 (44) of the datasheet you posted. LVM2P-015R10431 ak Upvote 0 Downvote
MartinTT said: ok thank you to everybody, it’s resettable polyswitch, but can’t figure out which one Click to expand... Page 4 (44) of the datasheet you posted. LVM2P-015R10431 ak
M MartinTT New Member Jan 25, 2024 #26 AnalogKid said: Page 4 (44) of the datasheet you posted. LVM2P-015R10431 ak Click to expand... no comment thank you Upvote 0 Downvote
AnalogKid said: Page 4 (44) of the datasheet you posted. LVM2P-015R10431 ak Click to expand... no comment thank you
M MartinTT New Member Jan 25, 2024 #27 Nigel Goodwin said: So was it killed by lightning? Click to expand... maybe, nobody knows…. Upvote 0 Downvote