2024-2026 Year Version.

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Datasheet (PDF Document) Include: Specifications, Agency Approvals, Packaging, Structure Diagrams, Glossary, Part Numbering System, Installation, Usage, Replace, Storage and other information.

Xiamen SET Electronics Co., Ltd.

Heat CutOff (HCO), also known as a three-terminal fuse, is a fuse that can be triggered to operate during overcurrent or overcharge conditions. The HCO product body is composed of epoxy resin, fusible alloy, heating element, arc-extinguishing material, and an outer casing.

The Thermal Cutoff (HCO) is primarily used as a secondary protection solution in the charge/discharge circuits of lithium batteries, adding a secondary protection component on top of the primary protection circuit. During the lithium battery charging or discharging process, it triggers in the event of overcurrent or overcharge, reducing the risk of fire or explosion in the battery. When the circuit current is excessive, the fusible alloy heats up and melts itself, passively cutting off the protected circuit. When the circuit experiences overcharge, and the primary protection circuit IC (integrated circuit) or main circuit FET (Field-Effect Transistor) fails, the secondary protection IC triggers the FET connected to the HCO. This allows the HCO to connect the heating resistor (Heater). The resulting heat melts the fusible alloy, actively cutting off the charge/discharge circuit while simultaneously disconnecting the Heater circuit. This achieves dual protection against both overcurrent and overcharge.

The main features of SETsafe | SETfuse's SHG series Thermal Cutoff (HCO) products are: rated current (5 / 12) A, rated voltage 36 VDC, operating voltage range (2.2 ~ 45) VDC. These products have obtained UL, cUL, and TUV certification and comply with RoHS & REACH standards.

Product Schematic

l  P1 ~ P2 Main Circuit（MC）

l  P1/P2 ~ P3 Control Circuit（CC）

● Surface Mount

● Overcurrent Protection

● Overcharging Protection

● Low Impedance, Low Power Consumption

● Controlled Fusing Time ≤ 60 s

● Non-Resettable 

● RoHS & REACH Compliant

Surface Mount

PCB Mount, Welding

You can download the 3D diagram of product structure to help you improve design efficiency to create more great products.

HCO_SHG series_3D_SETsafe & SETfuse.zip

● Portable Power Bank

● Smartphone

● Tablet

● Laptop

ABSOLUTELY ASSURED USE WITH GLOBALIZATION CERTICATION

The following certificates (PDF Documents) are only used for browsing on the web to prove the product has been certified. If you need a full version certificate, Please contact: sales@SETfuse.com

UL（USA）

Standards：UL248-14

File No.：JDYX2.E345932

UL_HCO_SHL&SHJ&SHG_SETsafe & SETfuse.pdf

cUL（Canada）

Standards：CAN/CSA-C22.2 No.248.14-00

File No.：JDYX8.E345932

cUL_HCO_SHL&SHJ&SHG_SETsafe & SETfuse.pdf

TUV (Germany)

Standards：EN 60127-1：2006+A1+A2 / EN 60127-7：2016

File No.：J 50678056

TUV_HCO_SHG_SETsafe & SETfuse.pdf

For product quality, our goal is to be industry-leading. We ensure that the quality of the product meets the expected goals from the following process.

Quality Policy.

Qualified Supplier of Raw Materials.

Incoming Quality Control (IQC):

Acceptance Quality Limit (AQL), Dimension, Function, Visual Inspection, RoHS & REACH Test. etc..

Process:

Online Inspection and Function Test 100%, etc..

In Process Quality Cortrol (IPQC): AQL, Dimension, Function, Visual Inspection, etc..

Final Quality Control (FQC):

AQL, Dimension, Function, Visual Inspection, RoHS & REACH Test, etc..

Reliability Test:

AQL Sampling Test.

Outgoing Quality Control (OQC):

Packaging, Labeling, Quantity Inspection, etc..

Agency Information:

Safety Certificate Agency Annual, Quarterly Audits. Include UL, cUL, VDE, TUV, KC, PSE, CCC. etc..

Quality Management System:

TUV Approved and Issued Certificate.

SETsafe | SETfuse

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