The small spotlight bulbs (GU10 fitting) are the most difficult to make reliable, since there's very little space for air circulation to cool the lamp.
As this video says, Philips don't even make these bulbs with GU10 fittings, probably because they can't achieve the necessary reliability.
As this video says, Philips don't even make these bulbs with GU10 fittings, probably because they can't achieve the necessary reliability.