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.
Resistance value for which the resistor has been designed, and which is generally used for denomination of the resistor.
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.
Temp. Coefficient of Resistance
Relative variation of resistance between two given temp. divided by the difference in the temp. producing it.
● Power Supply
● General Lighting
● Power Strip
● Personal Care Application
● Smart Home
● Security & Protection
SETsafe | SETfuse Quality Policy
Provide Industry-Leading Products
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.
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.
Online Inspection and Testing (Function 100% Automatic Testing).
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.
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.
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.
Temperature Cycle Test.
OQC (Outgoing Quality Control)
AQL(MIL-STD-105E), Packaging, Labeling, Quantity Inspection.
Agency (Safety Certificate) Annual, Quarterly Audits.
ISO9001, (TUV approved and issued certificate).
ISO14001, ISO45001, etc.
Click to view the certificate
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).
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.
As RXF is a non-resettable product, for safety sake, please use the same type of RXF for replacement.
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.
Fusible Wirewound Resistor (RXF) Catalog