Clamp and photovoltaic component

The utility model relates to a clamp and a photovoltaic component, the clamp comprises a first clamping part and a second clamping part which are oppositely arranged along the width direction of the clamp, and the first clamping part and the second clamping part are used for clamping a color steel tile; the first clamping part comprises a first clamping arm, and the first clamping arm is provided with a positioning protruding part extending towards the second clamping part in the width direction of the clamp. The second clamping part comprises a second clamping arm, the second clamping arm is provided with a positioning groove, and the positioning protruding part is contained in the positioning groove. In the width direction of the clamp, the positioning protruding part has a first size L1, the positioning groove has a second size L2, and L2-L1 meets the condition that L2-L1 is larger than or equal to 0 mm and smaller than or equal to 3 mm, so that stress concentration at the joint of the positioning protrudi