Gallery View: Miniaturization, precision lead chip resistor R&D goals

More manufacturers of chip resistors in China plan to offer types as small as 0201 and with ±0.01 percent resistance tolerance, eyeing 5G applications and electric vehicles.

Manufacturers in China's chip resistor production industry will focus on the release of models in 0201 and 01005 sizes in the next several years. High-precision types with ±0.01 percent tolerance and 5ppm/C temperature coefficient are also on their roadmap. These features are expected to be in high demand, especially for 5G devices and electric vehicles.

Units designed for use in communications, consumer electronics, audio, automotive and medical applications currently make up the mainstream selection in China. These come in 0402, 0603, 0805, 1206, 1812, 2010 and 2512 packages, with the first three accounting for most shipments. Variants in 0201 and 01005 packages can also be sourced but only from large companies such as Fenghua Advanced.

Widely offered chip resistors include thick-, thin-film and general-purpose kinds with resistance tolerance of ±1, ±2, ±5 and ±10 percent, while high-precision types have ±0.01 to ±1 percent. Other common specifications are 10ohm to 3Mohm resistance and 5, 10, 15, 25 and 50 ppm/C temperature coefficient. By rated power and voltage, 1/20, 1/16, 1/10, 1/8, 1/4, 1/3, 1/2, 3/4 and 1W, and 50, 150 and 200V are the choices. Typical operating temperature is -55 to 125 C. Products conform to CE, RoHS and UL standards.

Key materials such as resistive paste, ceramic substrates and silver paste may come from domestic or foreign providers as required. Due to the Covid-19 pandemic, input costs increased, resulting in a 10 percent uptick in product prices in the first half of 2020. In the months ahead, both are expected to stabilize.

The products in this gallery have been handpicked by our China-based market analyst for representing current trends in chip resistors from mainland China and Taiwan makers.

1/8W, 2.1x1.3x0.5mm

Aid Electronics Corp. markets the 0805R chip resistor with 150V maximum operating and 300V maximum overload voltages, and less than 50mohm, 10ohm to 1mohm or 1ohm to 10mohm resistance range. The 1/8W unit, measuring 2.1x1.3x0.5mm, operates in -55 to 125 C.

The negotiable order quantity has a delivery lead time of 7 days.

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3/4W, up to 500V overload voltage

A 3/4W chip resistor, the 2010R model from Aid Electronics Corp. has maximum 300V operating and 500V overload voltages. It comes in versions with resistance of less than 50mohm, 10ohm to 1mohm and 1ohm to 10mohm. Operating temperature is -55 to 125 C.

The 5x2.5x0.55mm unit has a negotiable minimum order. Delivery lead time is 7 days.

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1/10W, 1.6x0.85x0.45mm

The 1/10W chip resistor offered by Aid Electronics Corp., the 0603R, has maximum 50V operating and 100V overload voltages, and less than 50moh, 10ohm to 1mohm or 1ohm to 10ohm resistance. It operates in -55 to 125 C. Dimensions are 1.6x0.85x0.45mm.

The negotiable order quantity is for delivery within 7 days.

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±5 or ±1% tolerance

Dongguan Aillen Electronic Technology Co. Ltd's chip resistor, the SMF Series, has ±5 or ±1 percent tolerance, ±100ppm/C temperature coefficient and 10,000Mohm insulation resistance. It comes in variants with 2, 3 or 5W rated voltage.

The 1,000-unit minimum order has a 15-day delivery lead time.

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2, 3 or 5W-rated

The SMW Series from Dongguan Aillen Electronic Technology Co. Ltd is a chip resistor with 2, 3 or 5W rated voltage. Its resistance tolerance is ±5 or ±1 percent, temperature coefficient ±100ppm/C and insulation resistance 10,000Mohm.

An order of at least 1,000 units has a delivery lead time of 15 days.

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50 to 300V maximum operating voltage

This chip resistor from Dongguan Aillen Electronic Technology Co. Ltd, the CP Series, has 50, 150, 200 or 300V maximum operating voltage, 0 ohm or 1ohm to 1Mohm resistance, ±1 or ±0.5 percent resistance tolerance and ±100ppm/C temperature coefficient. Operating temperature is -55 to 155 C.

The supplier requires a minimum order of 1,000 units. Delivery is within 15 days.

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