4. Replace Through-Hole with SMD Resistor

Evaluation of Selected SMD Resistor (KOA Speer RK73B2BRTTD103J) against Required Specifications:

Resistance	Required: 10kΩ	Selected: 10kΩ	✅
Tolerance	Required: ±5%	Selected: ±5%	✅
Power Rating	Required: ≥0.25W	Selected: 0.25W	✅
Type	Required: Thick Film	Selected: Thick Film	✅
Package	Required: 1206	Selected: 1206 (3216 Metric)	✅
Mounting Type	Required: Surface Mount	Selected: Surface Mount	✅
Operating Temperature Range	Required: −55°C to +125°C or better	Selected: -55°C ~ 125°C	✅
RoHS Compliance	Required: Yes	Selected: ROHS3 Compliant	✅

All specified requirements are satisfied. The selected resistor is a suitable and approved replacement for the original through-hole part.