Leaded / Through-Hole (TO-18, TO-46, DIP) Market Analysis

Phototransistor Chips Market to Reach USD 1.8B by 2033 at 6.4% CAGR

Through-hole leaded packages remain in production for industrial and defense replacement markets where PCB rework costs and legacy board designs make SMD migration uneconomic. Unit volume is declining at roughly 2–3% annually as new designs specify surface-mount; revenue decline is slower due to above-average ASPs for mil-spec and industrial grades. JEDEC TO-package standards remain the reference specification.