CN-224233326-U - Surge protector suitable for reflow soldering

CN224233326UCN 224233326 UCN224233326 UCN 224233326UCN-224233326-U

Abstract

The utility model relates to a surge protector suitable for reflow soldering, and belongs to the technical field of surge protectors. The surge protector suitable for reflow soldering comprises a shell, a core and a separation sheet, wherein the shell is provided with a plurality of pins made of heat-resistant metal, the core is positioned in the shell and is spaced from the heat-resistant metal, the core is provided with a bare welding electrode, an external electrode and a monitoring electrode, one end of the separation sheet is welded with the welding electrode in a soldering manner to form a welding point, and the external electrode, the monitoring electrode and the separation sheet are respectively electrically connected with the corresponding pins. The surge protector suitable for reflow soldering provided by the utility model can be fixed through reflow soldering, has a remote signaling function and a separation function, and can be separated when a movement fails, so that the surge protector is prevented from firing and burning.

Inventors

ZHENG SHUANGLONG
YUAN ZHIYE
CHENG DACHUAN
LEI CHENGYONG

Assignees

四川中光防雷科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250507

Claims (10)

1. A surge protector suitable for reflow soldering is characterized by comprising a shell, a core and a separation sheet, wherein the shell is provided with a plurality of pins made of heat-resistant metal, the core is positioned in the shell and is spaced from the heat-resistant metal, the core is provided with a bare welding electrode, an external electrode and a monitoring electrode, one end of the separation sheet is welded with the welding electrode in a soldering mode to form a welding point, and the external electrode, the monitoring electrode and the separation sheet are respectively and electrically connected with the corresponding pins.
2. The surge protector for reflow soldering of claim 1, wherein the pin includes a monitor pin, the monitor electrode is electrically connected to the monitor pin by a monitor wire, and the monitor wire is made of a heat-resistant metal material.
3. The surge protector for reflow soldering of claim 1, wherein the pin includes two electrode pins, the electrode pins are provided with positioning notches, the release sheet and the outer electrode are provided with positioning bending parts, and the positioning bending parts are clamped into the positioning notches.
4. The surge protector for reflow soldering of claim 1, wherein the housing is provided with a mounting hole and a mounting step, the pin includes a notch portion lacking a corner, and a connecting portion and a locking portion vertically connected to both ends of the notch portion, one end of the notch portion is inserted into the mounting hole and the locking portion hooks the mounting step.
5. The surge protector for reflow soldering of claim 1, wherein the cartridge includes a base and a TVS body, a first thermal barrier is disposed inside the base, the TVS body is supported by the first thermal barrier, and a potting is disposed between the base and the TVS body.
6. The surge protector for reflow soldering of claim 1, wherein a second thermal barrier is provided between the housing and the cartridge.
7. The surge protector for reflow soldering of claim 1, wherein the housing includes a base and a cover removably connected, the pins being disposed on the base.
8. The surge protector for reflow soldering of claim 7, wherein the base has a latch on at least two sides, the cartridge has a locking platform, and the latch hooks the locking platform.
9. The surge protector for reflow soldering of claim 7, wherein the base has wedge blocks on at least two sides, the housing has a locking hole, and the wedge blocks are locked with the locking hole.
10. The surge protector for reflow soldering of claim 1, further comprising a trip assembly including an arc-shielding slide disposed between the cartridge and the release tab, and a trip spring to bias the arc-shielding slide into the separated weld.

Description

Surge protector suitable for reflow soldering Technical Field The utility model belongs to the technical field of surge protectors, and particularly relates to a surge protector suitable for reflow soldering. Background The transient suppression diode (TRANSIENT VOLTAGE SUPPRESSOR, TVS for short) is a relatively common lightning protection element, and is mainly used for protecting electronic components of a circuit. The TVS works on the principle that the TVS presents a high-impedance state under normal working voltage and rapidly changes to a low-impedance state when encountering transient overvoltage exceeding a set threshold value, so that overcurrent is discharged to the ground, and a subsequent circuit is protected. Since TVS response times are extremely short, typically on the order of nanoseconds, they are well suited for suppressing fast transient overvoltages. The surge protector generally comprises a shell, a TVS module, a release sheet and a tripping component, wherein a plurality of pins are arranged on the shell, the TVS module and the release sheet are respectively electrically connected with the corresponding pins, one end of the release sheet is welded with the TVS module by soldering tin to form a welding point, and the tripping component can be inserted between the release sheet and the TVS module after separation to cover the welding point and separate the two. If the surge protector in the prior art is fixed by adopting reflow soldering, the temperature heat transfer speed is higher in the reflow soldering process, and the temperature is easier to be conducted to the welding point to melt the solder, so that the lightning protection device malfunction is caused. Disclosure of utility model In view of the above, an object of the present utility model is to provide a surge protector suitable for reflow soldering, which can be fixed by reflow soldering and has a remote signaling function. The technical scheme of the utility model is as follows: The utility model provides a surge protector suitable for reflow soldering, which comprises a shell, a core and a separation sheet, wherein the shell is provided with a plurality of pins made of heat-resistant metal, the core is positioned in the shell and is spaced from the heat-resistant metal, the core is provided with a bare welding electrode, an external electrode and a monitoring electrode, one end of the separation sheet is welded with the welding electrode in a soldering manner to form a welding point, and the external electrode, the monitoring electrode and the separation sheet are respectively and electrically connected with the corresponding pins. As an alternative, the pin comprises a monitoring pin, the monitoring electrode is electrically connected with the monitoring pin through a monitoring wire, and the monitoring wire is made of a heat-resistant metal material. As an alternative scheme, the pin includes two electrode feet, be provided with the location breach on the electrode foot, break away from the piece with the outer electrode all is provided with location kink, location kink card is gone into in the location breach. As an alternative scheme, the shell is provided with mounting hole and installation step, the pin include lack the mouth word portion of one corner, and perpendicular connect in connecting portion and the locking portion at the both ends of mouth word portion, the one end of mouth word portion wears to locate the mounting hole just locking portion hooks the installation step. As an alternative, the movement includes a base and a TVS body, a first heat-resistant grille is disposed on the inner side of the base, the TVS body is supported by the first heat-resistant grille, and a potting is disposed between the base and the TVS body. As an alternative, a second thermal barrier is arranged between the casing and the movement. Alternatively, the housing includes a base and a cover that are detachably connected, and the pins are disposed on the base. As an alternative, at least two sides of the base are provided with buckles, the movement is provided with a locking platform, and the buckles hook the locking platform. As an alternative scheme, the base is provided with wedge blocks on at least two sides, the shell is provided with a lock hole, and the wedge blocks are buckled with the lock hole. As an alternative, the surge protector further comprises a trip assembly, the trip assembly comprises an arc-shielding slide block and a trip spring, the arc-shielding slide block is arranged between the movement and the release sheet, and the trip spring enables the arc-shielding slide block to have a trend of being inserted into the welding point after separation. The beneficial effects of the utility model are as follows: The surge protector suitable for reflow soldering provided by the utility model can be fixed through reflow soldering, has a remote signaling function and a separation function, can monitor the state of the s