ERA-2AEB333X

Panasonic 33kΩ, ±0.1%, ±25 ppm/K thin-film resistor in 0402 (1005 metric). Terminals 1 and 2 are nonpolar. Exact value, tolerance, TCR and packaging suffix belong to the identity, even when the body looks identical to another resistor.

E denotes 25 ppm/K and B 0.1%; 333 is 33 kΩ; X specifies 2 mm pitch punched carrier tape. Rated power is 0.063 W at 85 °C, subject to derating and voltage limits. The body drawing is 1.00 ±0.10 ×0.50 +0.10/−0.05 ×0.35 ±0.05 mm. Top and bottom termination lengths differ; the generic model does not reproduce that detail.

Panasonic’s 2025-12-24 land guide gives gap 0.5–0.6 mm, outer span 1.4–1.6 mm and width 0.4–0.6 mm. This candidate selects gap 0.55 mm, outer span 1.50 mm and width 0.50 mm, yielding pad length 0.475 mm and centers ±0.5125 mm. The existing board’s 0.54 ×0.64 mm pads are a separate variant. Solder-mask, paste, assembly and fabrication qualification remain open; the physical PCB has not been changed.

The included generic KiCad model measures 1.00 ×0.50 ×0.35 mm. Its envelope fits the nominal package; it is not exact manufacturer CAD, terminal metallization, film structure or a tolerance envelope. It carries no value marking, so do not infer resistance from its appearance. STEP uses mm; GLB meters; Z up and seating at zero. The annotated hero is reference artwork, not assembly geometry.

Manufacturer datasheet · Land-pattern guide

The component remains provisional. Precision resistor selection does not alone establish system accuracy: include ratio tolerance, differential temperature drift, self-heating, amplifier/reference errors and calibration in the circuit budget.