Thermal-Link/ Resistor Assemblies - F1KS series

Product catalog summary

Company Contact Information

The document provides contact details for Tamura Thermal Device Co., Ltd., including the Head Office in Sayama, Saitama, Japan; Osaka Branch Office; and Hong Kong Office. Each location includes telephone, fax numbers, and email addresses for sales contacts.

Product Overview

The product described is the F1KS series Thermal-Links/Resistor Assemblies, which integrate a fusible alloy type thermal fuse with a 1W resistor. These assemblies are designed for protection in LED lighting, LED power supplies, and adapters.

Key Features

Combination of fusible alloy thermal fuse and 1W resistor in a compact, space-saving design.
RoHS compliant, free of lead (Pb) and cadmium (Cd).
Excellent interruption characteristics under abnormal overload conditions.
Ideal for protecting LED lighting and power supply circuits.

Dimensions and Construction

The product dimensions are specified in millimeters with tolerances, including parameters A through G. The construction consists of:

Ceramic case
Silicone cement
Resistance element (ceramic insulator)
Thermal fuse (Thermal-Links)
Lead wires (tin-plated soft copper wire)

Ratings and Model Specifications

Model Name	Rated Power (25°C)	Nominal Resistance Range (Ω)	Resistance Tolerance	Thermal Fuse Rated Functioning Temp.	Rated Voltage	Rated Current
F1KS□□□J11	0.8W	1.8 to 47	±5%	115°C (N3F)	AC 250V	1A
F1KS□□□J13	1.0W	1.8 to 47	±5%	136°C (N5F)	AC 250V	1A

Note: Nominal resistance codes (□□□) can be customized upon request.

Model Number Composition

The model number consists of series name (F1KS), nominal resistance value, resistance tolerance (J = ±5%), and thermal fuse rated temperature (11 = 115°C, 13 = 136°C).

Performance Characteristics

In-rush Resistance: Tested with AC input voltage and capacitor load over 20,000 cycles with 30 sec ON/OFF switching.
Interception Time vs. Current: Graphs show maximum interruption times for different models at various currents, ensuring quick response to overload.
Derating Curve: Power rating decreases with increasing ambient temperature; detailed curves provided for models J11 and J13.

Electrical and Mechanical Specifications

Test Item	Test Method	Specification
Resistance Value	Measured by applying specified DC voltage across lead terminals	Within ±5% of nominal resistance
Functioning Temperature	Oil bath temperature rising at 0.5°C/min; detection current ≤10mA	F1KS□□□J11: 115°C +0/-7°C F1KS□□□J13: 136°C +0/-7°C
Insulation Resistance	DC 500V applied between body and leads, and between leads after function test	Body to leads: ≥1000 MΩ Between leads: ≥0.2 MΩ
Dielectric Strength	AC 1.5kV for 1 min between body and leads; AC 500V for 1 min between leads after function test	Withstand without breakdown for 1 minute
Temperature Coefficient of Resistance	Measured from room temperature to 70°C	±250 ppm/°C
Short Time Overload	Rated power ×10 applied for 5 seconds	Resistance change within ±(2% + 0.05Ω)
Soldering Heat Resistance	265°C ±5°C for 10 seconds	Resistance change within ±(1% + 0.05Ω)
Terminal Strength	Pull: 20N for 1 min; Bending: 90° for 1 cycle	No mechanical damage such as breakage or loosening
Humidity Resistance	40°C, 90-95% RH for 10,000 hours	Resistance change within ±(2% + 0.05Ω)
Load Life	Rated load for 1000 hours with 1.5h ON / 0.5h OFF cycle	Resistance change within ±(3% + 0.05Ω)

Nominal Resistance Range and Maximum Applied Voltage

For resistance 1Ω and above: max voltage 0.3V (less than 10Ω), 1V (10Ω to less than 100Ω)

Summary

The F1KS series Thermal-Links/Resistor Assemblies are compact, reliable components combining thermal fuses and resistors designed for protection in LED lighting and power supply applications. They comply with RoHS standards, offer excellent overload interruption, and have been tested for durability under various electrical, mechanical, and environmental conditions. Detailed specifications and performance data support their suitability for high-reliability applications.

Catalog excerpts

Thermal-Link/ Resistor Assemblies - F1KS series-1

Silicone cement 硅树脂水泥 Resistance (Ceramic insulator) 电阻素子 Thermal-Links 温度保险丝 Lead wire (Tin plated copper wire) 导线 Models Component 品名构成 Nominal resistance value 额定电阻值 Resistance tolerance 电阻值容许偏差 Thermal-Links 温度保险丝 Thermal-Links温度保险丝 Rated power Nominal resistance value Resistance tolerance 额定电力额定电阻值电阻值容许偏差 Rated functioning temp. Rated voltage Rated current 额定动作温度额定电压额定电流 For LED lighting and LED power supply 对应LED照明,LED电源 Nominal Resistance Code If you have any request please feel free to consult about the resistance. 额定电阻值记号请随时联系所需电阻值。 Thermal-Links/Resistor Assemblies is a product that combined with thermal-links of fusible alloy type and 1W resistor type. F1KS is RoHS compliance product, non-Pb and non-Cd contains. F1KS got excellent interception characteristic when abnormality overload happened. 350-1328 2-3-1 TEL 04-2900-0039 FAX 04-2900-0038 URL http://www.tamurathermaldevice.co.jp e-mail [email protected] 564-0062 3-27-27 TEL 06-6192-3433 FAX 06-6192-3434 e-mail [email protected] TEL +852-2679-2152 e-mail [email protected] Head office Sayama technopark Device block, 2-3-1 Hirosedai, Sayama-shi, Saitama 350-1328, Japan. TEL INT +81-4-2900-0039 FAX INT +81-4-2900-0038 Osaka branch office Daini Esaka Sanshou Bldg. 4F, 3-27-27 Tarumi-cho, Suita-shi, Osaka 564-0062, Japan. TEL INT +81-6-6192-3433 FAX INT +81-6-6192-3434 Hongkong office TEL I

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Thermal-Link/ Resistor Assemblies - F1KS series-2

For LED lighting and LED power supply 对应LED照明,LED电源 Thermal-Links/Resistor Assemblies 温度保险丝付电阻器 In-rush Resistance Characteristics 防冲击电阻特性 AC Input voltage AC输入电压 Test circuit試験回路 Performance 其它性能 Test characteristics 試験項目 Test Methods 試験方法 The following DC voltage is applied across lead terminals for measurements. 导线端子间施加下表的直流电压进行测定。 Discharge resistor 放電电阻 Nominal resistance range 额定电阻值范围 Resistance value 电阻值 Max. applied Volt. 最高承受电压 Switching time开关转换时间 5% Resistance shall be within ±5% of nominal resistance value. 在±5%以内。 Capacitance 电容容量 Functioning temperature 动作温度 Derating Curve 降低负荷曲线...

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