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For a purchasing manager dealing with 16-week lead times on critical PLC modules, what hybrid inventory strategy balances cost-effectiveness with production continuity during supply chain disruptions?

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As a purchasing manager facing those frustrating 16-week lead times on critical PLC modules, I completely understand your dilemma. You're caught between the need to keep production running smoothly and the pressure to control inventory costs. Here's a practical hybrid approach that's been working well for many in similar situations:

Start with ABC analysis to categorize your PLC modules - focus your buffer stock on the most critical components that would cause immediate production shutdowns if unavailable. For these A-class items, implement a "just-in-case" safety stock strategy using the formula: (Maximum Daily Usage x Maximum Lead Time) - (Average Daily Usage x Average Lead Time). Given your 16-week lead times, I'd recommend maintaining at least 4-6 weeks of buffer stock for your most critical modules.

Combine this with strategic supplier relationships - work with multiple suppliers when possible and consider local or regional alternatives for faster emergency replenishment. Also, implement regular demand forecasting reviews and consider consignment inventory arrangements where suppliers maintain stock at your facility.

This hybrid approach gives you the resilience of just-in-case for critical components while maintaining cost control through careful classification and strategic sourcing. It's about finding that sweet spot where you're prepared for disruptions without tying up excessive capital in inventory.

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