Stable MELF resistors exhibiting excellent resistance stability over extended use

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Stable MELF resistors exhibiting excellent resistance stability over extended use

Stable MELF resistors offer a rated power range from 0.166W to 0.5W, with resistance values spanning from 0.51 ohms to 10M ohms. The resistance tolerance is tightly controlled within ±1% to ±5%, ensuring precision. These resistors are designed with surge resistance capabilities suitable for long-term use. The SMD packaging provides excellent solderability, and the heat dissipation is superior to chip resistors. Additionally, the MELF's robust mechanical structure makes it resistant to vibration and thermal shock, ensuring reliability in harsh environments.

Type	Body Length (L, mm)	Cap Diameter (D1, mm)	Body Diameter (D2, mm)	Soldering Spot (B, mm)	Net Weight Per 1000 pcs
1/4W	3.52 ± 0.15	1.35 ± 0.1	D1 + 0.02/ -0.15	0.6 Min.	17 grams
1/3W	5.90 ± 0.20	2.20 ± 0.1	D1 + 0.02/ -0.2	1.0 Min.	66 grams
1/2W	5.90 ± 0.20	2.20 ± 0.1	D1 + 0.02/ -0.2	1.0 Min.	66 grams

Power Rating (at 70°C)	Maximum Working Voltage	Maximum Overload Voltage	Minimum Resistance	Maximum Resistance	Resistance Tolerance	Available Resistance Values
1/4W	200V	400V	0.51Ω	10MΩ	±1%	E - 96
1/3W	250V	500V	0.51Ω	10MΩ	±1%	E - 96
1/2W	250V	500V	0.51Ω	10MΩ	±1%	E - 96

Characteristics	Ranges & Limits
Operating Temperature Range, °C	-55 ~ +125
Temperature Coefficient, PPM / °C*	±1%, ±2%, ±25, ±50, ±100
Insulation Resistance, MΩ	>10⁴
Failure Rate, pcs/10⁹ device hours	<0.1
Thermal Resistance, kW	<220
Tin Whisker (JESD201 Temperature Cycling & High Temp./Humidity Storage), μm	<5

Not applicable to all resistance values. Please check with us regarding the PPM of specific resistance value(s).

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In addition to Stable MELF resistors exhibiting excellent resistance stability over extended use, we also focus on the following resistors:

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