Xiamen SET Electronics Co., Ltd.
Voltage across TVS in a region of low differential resistance that serves to limit the voltage across the device terminals.
— (IEC 61643-321)
Reverse Stand-off Voltage
Maximum voltage that can be applied to the TVS without operation.
NOTE : It is also shown as VWM (maximum working voltage (maximum d.c. voltage)) and known as rated stand-off voltage (Vso).
Reverse Leakage Current
Current measured at VR.
NOTE : Also shown as ID for stand-by current.
Voltage across TVS at a specified current IT in the breakdown region.
Rated Random Recurring Peak Impulse Current
Maximum-rated value of random recurring peak impulse current that may be applied to a device.
Rated Average Power Dissipation
Maximum-rated value of power dissipation resulting from all sources, including transients and standby current, averaged over a short period of time.
Rated Random Recurring Peak Impulse Power Dissipation
Maximum-rated value of the product of rated random recurring peak impulse current (IPPM) multiplies by specified maximum clamping voltage (VC).
Capacitance across the TVS measured at a specified frequency and voltage
Peak Forward Surge Voltage
Peak voltage across an TVS for a specified forward surge current (IFS) and time duration.
NOTE : Also shown as VF.
Forward Surge Current
Pulsed current through TVS in the forward conducting region.
NOTE : Also shown as IF.
Temperature Coefficient of Breakdown Voltage
The change of breakdown voltage divided by the change of temperature.
Peak pulse Current
Peak pulse current value applied across the TVS to determine the clamping voltage VC for a specified wave shape.
Pulsed D.C. Test Current
Test current for measurement of the breakdown voltage VBR. This is defined by the manufacturer and usually
given in milliamperes with a pulse duration of less than 40 ms.
NOTE : Also shown as IBR .
● Communication Equipment
● Security & Protection
● Industrial Control Equipment
● Power Supply
● Automotive Electronics
● New Energy
● Lightning 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
Tool Microscope, Curve Tracer, X-ray, 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
Leakage, Breakdown Voltage, Surge test system (100% Automatic Testing).
100% Visual inspection, SMD Product 100% AI system.
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
Test specification (01-TE-01-xxx).
Including Electrical Performance, Mechanical Performance, Soldering Performance, Environmental Test and Life Test. e.g in compliance with JEDEC, AEC-Q101 specification.
OQC (Outgoing Quality Control)
AQL(MIL-STD-105E), Packaging, Labeling, Quantity Inspection.
ISO9001, (TUV approved and issued certificate).
ISO14001, ISO45001, etc.
Click to view the certificate
RoHS & REACH Compliant, Halogen Free.
1. TVS must be operated in the specified ambient temp.
2. Do not clean the TVS with strong polar solvent such as ketone, esters, benzene and halogenated hydrocarbon, to avoid damaging the encapsulating layer.
3.Please do not apply severe vibration, shock or pressure to TVS, to avoid element cracking.
1.If TVS is visually damaged, please replace it.
2.TVS is a non-repairable product. For safety sake, please use equivalent TVS for replacement.
1. Storage Temp. Range: (-55 to 150) °C.
2. Do not store the TVS at the high temp., high humidity or corrosive gas environment, to avoid influencing the
solder- ability of the lead wires. The product shall be used up within 1 year after receiving the goods.
1. TVS should not be exposed to the open air, nor direct sunshine.
2. TVS should avoid rain, water vapor or other condition of high temp. and high humidity.
3. TVS should avoid sand dust, salt mist, or other harmful gases.
Max. Typical Capacitance of TVS
The typical capacitance of TVS is listed in the specifications. Designers may refer to it when designing TVS in High frequency circuit.
Installation Mechanical Stress
1.Do not knock TVS when installing, to avoid mechanical damage.
2.Please do not apply severe vibration, shock or pressure to TVS, to avoid surface resin or element cracking.
SETsafe | SETfuse
SETsafe | SETfuse designs, manufactures, and markets industry-leading circuit control and safety protection components, providing comprehensive circuit safety solutions.
Established in 2000 in Xiamen, China, SETsafe | SETfuse has successfully expanded its reach to more than 40 countries and regions. We are proud to have valuable customers among some of the world's Fortune 500 companies.Our products have obtained certifications such as CCC, UL, cUL, VDE, TUV, PSE, KC, and others, ensuring their adherence to standards of quality and safety. Additionally, products comply with environmental protection regulations such as RoHS and REACH. The company holds the IATF16949, ISO 9001, ISO 14001, ISO 45001, ISO 50001, and GB/29490 management system certifications, demonstrating our commitment to excellence in all aspects of our operations.The company actively participates in the formulation and revision of numerous national and international standards for circuit protection components, further solidifying our expertise and dedication to driving innovation in the industry.
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