Limited Stock

Panasonic ERJ-2RKF51R0X 51 ohm 1% 1/10W 0402 SMD Thick Film Resistors 55pcs

Resistors • SKU RFB00506

$4.95

55-piece lot of genuine Panasonic ERJ-2RKF51R0X precision thick-film surface-mount resistors. Each resistor provides a 51 ohm resistance value with ±1% tolerance and a 0.10W (1/10W) power rating in the miniature 0402 (1005 metric) SMD package. Panasonic specifies a ±100 ppm/°C temperature coefficient, with the ERJ-2RK family designed for dependable high-density surface-mount applications. The series is AEC-Q200 qualified and operates across a wide -55°C to +155°C temperature range. Typical uses include signal conditioning, current limiting, bias networks, termination, feedback circuits, communications equipment, automotive electronics, industrial controls, compact RF assemblies, and general electronic repair. Original distributor packaging identifies Panasonic part number ERJ-2RKF51R0X, 51 ohm, 1%, 0402, 1/10W, with date code 1738. The exact ERJ-2RKF51R0X remains an active Panasonic production part.

HISTORICAL BACKGROUND: Panasonic's ERJ chip-resistor families became widely adopted as electronic manufacturing shifted from through-hole construction toward increasingly compact automated surface-mount assembly. The 0402 package represented a major reduction in PCB area compared with earlier 1206 and 0805 components while still allowing manufacturers to retain dependable thick-film resistor technology and precise resistance values. A 51 ohm resistor is particularly common in signal-path damping, digital and RF line termination, current limiting, impedance-related networks, and interface circuitry. Components such as the ERJ-2RKF51R0X became standard building blocks in communications equipment, industrial electronics, automotive modules, portable electronics, and dense control circuitry where small size and repeatable electrical characteristics were important.