Surge Resistant MELF Resistor

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Surge Resistant MELF Resistor

The surge-resistant MELF resistor offers a rated power range of 0.25W to 3W and a resistance span from 0.1Ω to 2.2MΩ. Compared to other branded wirewound resistors, it boasts the advantage of tight tolerances, ranging from ±1% to ±5%, and can withstand a maximum surge voltage of up to 10KV. Equipped with enhanced performance levels, it effectively counters surge currents or surge damage caused by environmental factors. Certified with AEC-Q200, it features sulfur resistance. With an SMD structure, it shares the same dimensions as flat chip resistors.

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
1/2Wa	3.52 ± 0.15	1.35 ± 0.1	D1+0.02/ -0.15	0.6 Min.	17 grams
1/2Wb	5.90 ± 0.20	2.20 ± 0.1	D1+0.02/ -0.2	1.0 Min.	80 grams
1/2Wc	5.90 ± 0.20	2.20 ± 0.1	D1+0.02/ -0.2	1.0 Min.	80 grams
1W	5.90 ± 0.20	2.20 ± 0.1	D1+0.02/ -0.2	1.0 Min.	80 grams
1W	5.90 ± 0.20	2.20 ± 0.1	D1+0.02/ -0.2	1.0 Min.	80 grams
2W	8.50 ± 0.50	3.00 ± 0.2	D1+0.05/ -0.35	1.3 Min.	230 grams
3W	10.50 ± 0.50	4.00 ± 0.5	D1+0.05/ -0.45	1.6 Min.	520 grams

Power Rating (at 70°C)	Maximum Working Voltage	Maximum Permissible Surge Voltage	Minimum Resistance	Maximum Resistance	Resistance Tolerance	Available Resistance Values
1/4W	400V	2,000V	1Ω	1MΩ	±1%~±5%	E-24/E-96
1/2W	450V	4,000V	1Ω	10MΩ	±1%~±5%	E-24/E-96
1/2W	600V	6,000V	1Ω	10MΩ	±1%~±5%	E-24/E-96
1/2W	600V	8,000V	0.1Ω	10MΩ	±1%~±5%	E-24/E-96
1W	600V	8,000V	0.1Ω	10MΩ	±1%~±5%	E-24/E-96
1W	600V	10,000V	0.1Ω	10MΩ	±1%~±5%	E-24/E-96
2W	700V	9,000V	0.1Ω	10MΩ	±1%~±5%	E-24/E-96
3W	800V	10,000V	0.1Ω	10MΩ	±1%~±5%	E-24/E-96

For a better life cycle under normal usage, 50% of the rated power is recommended.
Special sizes, values, and specifications not listed available on special order.
For resistance values outside the specified ranges, please contact us.

Rated Continuous Maximum Working Voltage (RCWV) should be determined from

Temperature Coefficient, PPM / °C*: ±200, ±400, ±800, ±1200
Operating Temperature Range, °C: -55 ~ +155
Insulation Resistance, MΩ: >10⁴
Tin Whisker (JESD201 Temperature Cycling & High Temp. / Humidity Storage), μm: <5
Failure Rate in Time, pcs / 10⁹ device hours: <1.5
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 Surge Resistant MELF Resistor, we also focus on the following resistors:

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