Xiamen SET Electronics Co., Ltd.

Fusible Wirewound Resistor (RXF) is a power resistor, which is made by winding a resistive element  on a ceramic core, and the core is coated by insulation coating. As a Protective Component, RXF works as a fixed resistor in normal operation, and is designed to open the circuit under the overload condition. 

SETsafe | SETfuse RXF is attractive owing to its Miniaturized Size and Superior Properties and it has already been approved by UL, cUL, CQC, VDE. It also complies with  RoHS, REACH.

R

Rated Resistance

Resistance value for which the resistor has been designed, and which is generally used for denomination of the resistor.

— (IEC60115-1)

U_N

Rated Voltage

The d.c. or a.c. r.m.s. voltage calculated from the square root of the product of the rated resistance and the rated dissipation.                                                                                            

— (IEC60115-1)

TCR

Temp. Coefficient of Resistance

Relative variation of resistance between two given temp. divided by the difference in the temp. producing it. 

— (IEC60115-1)

Through Hole

Radial，Axial

● Power Supply

● General Lighting

● Power Strip

● Personal Care Application

● Smart Home

● Security & Protection

SETsafe | SETfuse Quality Policy

Provide Industry-Leading Products

Raw-materials Supplier

Select critical raw materials: Must be from a manufacturer with quality management system (ISO9001, IATF16949) certification.

Annual or Quarterly Audits.

IQC (Incoming Quality Check)

AQL(MIL-STD-105E), Dimensions, Function, Visual Inspection, RoHS & REACH Test.

Document

Formulate corresponding incoming inspection specifications (01-QA-06-xxx) for each key material according to design data such as material technical indicators.

Testing Equipment and Tools

Projector, Resistance meter, Tool Microscope, Salt Spray Tester, Universal Material Testing Machine, Spectrum Analyzer, etc.

Manufacturing Process

Online Inspection and Testing (Function 100% Automatic Testing).

Document

Process Flow Chart.

Failure Mode and Effects Analysis (FMEA).

Quality Control Flow Chart (QCFC).

Standard Inspection Procedure (SIP).

Work Instruction (WI).

Online Testing and Inspection

Resistance test system (100% Automatic Testing).

100% Visual inspection.

etc.

IPQC (In Process Quality Control) Inspection

AQL(MIL-STD-105E), Dimensions Inspection, Function Test, Visual Inspection.

FQC ( Final Quality Control)

AQL(MIL-STD-105E), Dimensions Inspection, Function Test, Visual Inspection, RoHS & REACH Test.

Reliability Test

Test specification (01-TE-01-3002-001)

Including 23 items of Appearance Requirements, Electrical Performance, Mechanical Performance, Soldering Performance, Environmental Test and Life Test. e.g.

Insulation Resistance Test.

Voltage Proof Test.

Fusing Test.

Temperature Cycle Test.

Surge Test.

etc.

OQC (Outgoing Quality Control)

AQL(MIL-STD-105E), Packaging, Labeling, Quantity Inspection.

Agency

Agency (Safety Certificate) Annual, Quarterly Audits.

Management System

ISO9001, (TUV approved and issued certificate).

ISO14001, ISO45001, etc.

Click to view the certificate

Environmental

RoHS & REACH Compliant.

SETsafe | SETfuse

Cold Resistance Test

1. If product TCR is not less than 350 (10^-6/°C), the measured resistance value shall be corrected as the relative resistance value under 25 °C according to TCR formula.

2. Resistance Measurement (4-terminal test).

Usage

1. Do not touch the resistor body or pins directly when power is on, to avoid burn or electric shock.

2. When air pressure is from 80 kPa to 106 kPa, the relative altitude shall be 2000 m to - 500 m.

Replacement

As RXF is a non-resettable product, for safety sake, please use the same type of RXF for replacement.

Storage

1. Please store RXF with ambient temp. 10 °C to 30 °C and relative humidity 30% to 75%.

2. Do not store the RXF at the high temp., high humidity or corrosive gas environment, avoid influencing the solderability of the pins, please use them up within 1 year after receiving the goods.

SETsafe | SETfuse

SET

Fusible Wirewound Resistor (RXF) Catalog

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