0402 SMD Chip Resistors, Reels & Assortment Kits

0402 SMD chip resistors for compact PCB assembly

This collection focuses on 0402 imperial surface-mount resistors, a compact chip format used in dense electronic assemblies. It includes single-value packs, full-reel quantities and resistor assortments with options described across zero-ohm, low-ohm, standard E-series and megohm ranges. Resistance, tolerance, power, voltage, quantity and construction vary by listing and selected variant.

What is a 0402 resistor?

0402 is an imperial package code for a nominal body approximately 0.04 × 0.02 inches, commonly associated with the 1005 metric size. It describes physical size, not resistance or electrical performance. A 0402 resistor may serve as a pull-up, pull-down, bias, feedback, filter, termination, LED-current or configuration component when its complete rating suits the circuit.

Products represented

Single-value 0402 resistors: selected values commonly written with R, K or M notation.
0R jumpers: zero-ohm links for PCB configuration and routing, subject to their own current and power limits.
Precision and general-purpose options: listings described with 0.1%, 1% or 5% tolerances; availability must be verified for the exact value and pack.
Assortment kits and sample books: multiple resistance values for prototyping, repair and engineering stock.
Bulk and reel quantities: larger packs and selected 10,000-piece reel listings for production purchasing.

How to select a 0402 resistor

Choose nominal resistance: verify the exact variant. 4R7 means 4.7Ω, 2K2 means 2.2kΩ and 1M means 1MΩ.
Set tolerance: select the accuracy required by the circuit. Tighter initial tolerance does not automatically provide lower TCR or better long-term stability.
Confirm the package: check 0402 imperial versus similarly named metric codes, plus the PCB footprint and placement capability.
Calculate dissipation: use P = I²R or P = V²/R and apply thermal derating for ambient temperature, pad geometry and board conditions.
Check working voltage: a resistor can reach its voltage limit before its theoretical power limit, especially in small packages.
Review temperature and pulse needs: precision analog, surge, switching and sensing circuits may require defined TCR, overload and pulse data.
Choose packaging: compare loose packs, cut tape, books, assortment sets and full reels by pieces per value and total quantity.

0402 versus larger SMD packages

0402 saves PCB area compared with 0603, 0805 and 1206, but it is harder to handle manually and usually offers less area for heat dissipation. A larger package may be preferable for higher voltage, power, pulse energy or easier rework. Package size alone still does not prove a specific wattage.

Power-rating caution

Some listings contain conflicting power language, including 1/16W, 1/4W or 1/2W references around products labeled 0402. These values must not be treated as interchangeable or collection-wide ratings. Confirm the exact manufacturer or supplier specification, operating temperature and PCB derating conditions before design use.

Mixed-listing boundaries

Several listings combine 0402 with 0201, 0603, 0805, 1206, 1210, 1812, 2010 or 2512 options. Only the explicitly selected 0402 variant belongs to the 0402 format; sharing a listing does not make package sizes interchangeable. The sample-book listing also includes capacitor options, which are different component types and must not be selected as resistors.