Panasonic ERJ-2RKF4871X 4.87K ohm 1% 1/10W 0402 Thick Film Resistor 80 PCS PACK
Full Description & History
Original Mouser Electronics distributor package containing 80 Panasonic ERJ-2RKF4871X thick-film surface-mount resistors. Each resistor is rated 4.87K ohm with ±1% tolerance and 0.1W / 1/10W power rating in the miniature EIA 0402 / metric 1005 package.
This listing is for the complete 80-piece package as one sellable unit. The original Mouser label identifies Mouser number 667-ERJ-2RKF4871X and Panasonic part number ERJ-2RKF4871X. The package is marked RoHS compliant, date code 2140, and country of origin CN / China.
The ERJ-2RK series is automotive-qualified to AEC-Q200 requirements and is designed for dependable general-purpose resistance in compact electronic assemblies. The 4.87K ohm precision value is useful in voltage dividers, bias networks, feedback circuits, sensing networks, signal conditioning, pull-up and pull-down applications, communications circuitry, automotive electronics, instrumentation, and compact control systems.
HISTORICAL BACKGROUND:
Panasonic became a major supplier of passive electronic components as electronics manufacturing shifted from traditional leaded parts toward automated surface-mount assembly. Thick-film chip resistors such as the ERJ family helped make high-density PCB production practical by combining small standardized footprints with predictable resistance values, good manufacturing repeatability, and compatibility with automated placement equipment.
The 0402 footprint represents a later stage of electronic miniaturization, allowing many more components to be placed within the same board area than older 1206, 0805, or 0603 packages. Components of this size became increasingly common in mobile electronics, automotive modules, communications hardware, instrumentation, embedded controllers, and other densely populated assemblies.
The 4.87K ohm value is part of the precision 1% resistance series and is useful where a designer needs a value more exact than common rounded values such as 4.7K or 5.1K. Panasonic’s AEC-Q200-qualified ERJ-2RK family remains an active component series, making this original distributor package suitable for current builds as well as repair and maintenance work.
Origin Tracker
NOS / New Old Stock
Unused new old stock from legacy inventory. Packaging, age, and cosmetic condition may vary.
Pipeline quantities are informational and may change after arrival, inspection, sorting, testing, or donor teardown.
Compatible Radios / Boards
Compatible Radios / Boards
Suitable for circuits requiring a 4.87K ohm ±1% thick-film chip resistor rated at 0.1W / 1/10W in an EIA 0402 / metric 1005 footprint. Appropriate for automotive-qualified designs, voltage dividers, feedback networks, bias circuits, signal conditioning, sensing circuits, communications equipment, control electronics, instrumentation, and general SMD PCB repair where the original electrical and physical specifications match.
RF Boneyard Bench Notes
RF Boneyard Bench Notes
Original Mouser distributor package visually inspected. Label identification confirms Panasonic ERJ-2RKF4871X, 4.87K ohm resistance, ±1% tolerance, 0402 SMD construction, RoHS compliance, quantity 80 pieces, date code 2140, and country of origin China. Individual resistors have not been electrically measured and remain together in the distributor package.
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