US 2014/0209365 A1 · OVER-CURRENT PROTECTION DEVICE AND CIRCUIT BOARD STRUCTURE CONTAINING THE SAME

Abstract

An over-current protection device, which can be surface-mounted and stand upright on a circuit board and withstand 60 to 600 volts, comprises a PTC device, first and second electrodes. The PTC device is a laminated structure comprising first and second conductive layers and a PTC material layer. The first and second conductive layers are in physical contact with first and second planar surfaces of the PTC material layer, respectively. The first electrode is disposed on the first conductive layer. The second electrode is disposed on the second conductive layer and is separated from the first electrode. The first electrode, the second electrode and the PTC device commonly form an end surface which is substantially perpendicular to the first and second planar surfaces. The first electrode and the second electrode at the end surface serve as interfaces electrically connecting to the circuit board.

Claims13

Dependent claims

An over-current protection device adaptive to be surface-mounted on a circuit board and capable of withstanding 60 to 600 volts, comprising:

a PTC device of a laminated structure, comprising a first conductive layer, a second conductive layer and a PTC material layer, the first conductive layer being in physical contact with a first planar surface of the PTC material layer, the second conductive layer being in physical contact with a second planar surface of the PTC material layer, the second planar surface being opposite to the first planar surface;
a first electrode disposed on the first conductive layer;
and
a second electrode disposed on the second conductive layer, and being separated from the first electrode;
wherein the first electrode, the second electrode and the PTC device form an end surface substantially perpendicular to the first and second planar surface, the first and second electrodes at the end surface serve as interfaces electrically connecting to the circuit board.

2 more elements

A circuit board structure, comprising:

a circuit board, and
an over-current protection device capable of withstanding 60 to 600 volts and being surface-mounted on the circuit board in an upright position, the over-current protection device comprising a PTC device, a first electrode and a second electrode, the PTC device comprising a first conductive layer, a second conductive layer and a PTC material layer, the first conductive layer being in physical contact with a first planar surface of the PTC material layer, the second conductive layer being in physical contact with a second planar surface of the PTC material layer, the second planar surface being opposite to the first planar surface, the first electrode being disposed on the first conductive layer, the second electrode being disposed on the second conductive layer and separated from the first electrode;
wherein the first electrode, the second electrode and the PTC device commonly form an end surface substantially perpendicular to the first and second planar surfaces, the first and second electrodes at the end surface serve as interfaces electrically connecting to the circuit board.

Dependencies are inferred from the claim text.

Over-current protection device and circuit board structure containing the same

Life of this patent

Over-current protection device and circuit board structure containing the same

Life of this patent

Abstract

Claims13