Panasonic ERJ-3EKF4223V 422K Ohm 1% 0603 SMD Thick Film Resistor 90 PCS

90 PCS Panasonic ERJ-3EKF4223V precision thick-film surface-mount resistors with a nominal resistance of 422K ohms in the compact 0603 package.

These resistors feature 1% tolerance and a 1/10 watt power rating. The ERJ-3EK series is designed for general-purpose and reliability-conscious electronic applications and carries AEC-Q200 qualification for automotive component use.

The 422K ohm value is useful in high-impedance bias networks, voltage dividers, feedback circuits, sensing networks, timing circuits, analog electronics, control circuitry, communications equipment, and general PCB repair.

The 0603 package measures approximately 1.6 x 0.8 mm and remains one of the most widely used surface-mount resistor formats in modern electronics.

The original Mouser distributor package identifies Panasonic part number ERJ-3EKF4223V, country of origin Israel, and date code 2045, corresponding to production during the 45th week of 2020.

LIFECYCLE STATUS: ACTIVE

HISTORICAL BACKGROUND:
Panasonic traces its origins to 1918 and grew from a small Japanese electrical-products manufacturer into one of the world's major electronics companies.

Alongside consumer products, Panasonic developed a substantial electronic-components business supplying resistors, capacitors, inductors, switches, relays, sensors, and other components used in industrial, communications, automotive, computer, and consumer equipment.

Surface-mount technology transformed electronic manufacturing during the late twentieth century. Traditional axial resistors required drilled circuit boards and lead insertion, while chip resistors could be automatically placed directly onto PCB pads at very high production speeds.

The 0603 package became one of the industry's most successful chip-resistor formats. Its approximately 1.6 x 0.8 mm size provides an effective compromise between compact PCB layout, automated assembly, electrical capability, and practical repair work.

Thick-film resistors are manufactured by applying a resistive material to a ceramic substrate and trimming the element until the desired resistance value is achieved. Modern manufacturing techniques allow precise values such as 422K ohms to be produced economically with tight 1% tolerance.

Values such as 422K are useful when designers require a resistance near, but more precise than, traditional broad-value selections. They can appear in feedback networks, voltage-setting circuits, sensor interfaces, analog control networks, and precision divider applications.

AEC-Q200 qualification reflects the increasing reliability requirements placed on passive electronic components used in automotive environments, where temperature changes, vibration, humidity, and long service life must be considered.

The ERJ-3EKF4223V remains an active-production Panasonic resistor. These particular components are original distributor stock carrying a 2020 production code.