Dual-Source PCB Award Under Cost and Continuity Pressure

Recommend a dual-source award, roughly 75% to Tainan and 25% to Guadalajara, not full consolidation. The visible saving from Tainan's 4.5% cut is about $262,000 per year (260,000 × $22.40 × 0.045), but it creates single-source exposure on a line where downtime costs $38,000 per hour. Five weeks of inventory is roughly 25,000 units; a 10-week lead time plus a quality excursion could exhaust that buffer before recovery. A 75/25 split captures most of the concession while keeping Guadalajara qualified and capable of surge. Justify with total cost of ownership, not unit price: add freight, duties, inventory carrying cost, quality failure cost, expedite risk, and the cost of a potential stoppage. Ask quality for defect trend by lot and process change history, not just ppm, because a rising Mexico trend may cap upside volume until containment is proven. Use a weighted scorecard such as cost 30%, quality 25%, delivery 20%, capacity and risk 15%, technical 10%. Set a 12-month review with quality gates and volume-flex bands. Finance should see the risk-adjusted cost; engineering should see that dual qualification does not prevent consolidation later if performance stabilizes.

The award should be backed by safeguards that make the second source real rather than nominal. First, reserve capacity explicitly: Tainan commits to 75% of forecast plus a 10% upside band, and Guadalajara commits to 25% plus surge capacity, with a formula for volume flex and notice periods. Second, own or control tooling and test fixtures so transfer is possible without supplier consent. Third, set quality gates: lot acceptance criteria, corrective-action timelines, source inspection rights, and a freeze on unapproved process changes. Fourth, require rolling forecast sharing and a lead-time commitment, with expedite obligations and cost-sharing. Fifth, keep a minimum buffer of safety stock and define who holds it and at what carrying cost. Sixth, add performance credits and a transition clause that allows Northline to move volume if on-time delivery or ppm falls below threshold for two consecutive months. The reasoning is that dual sourcing only reduces risk if the second source has qualified capacity and if switching is contractually and physically feasible; otherwise the buyer pays a premium for an option it cannot exercise.

Negotiate sequentially and fact-based, not as a public auction. With Tainan, do not reveal that full volume is unavailable; state that Northline values the price offer but must preserve continuity, and ask Tainan to apply the 4.5% reduction to a committed 75% share, with the remaining 25% tied to a 12-month performance review. Trade volume certainty for price, capacity reservation, and lead-time improvement. With Guadalajara, separate A7 from B2. Make clear that B2 is not automatic and must be earned through a competitive quote and qualification; ask for a revised B2 price and a quality improvement plan before discussing volume. Use should-cost analysis and benchmark data to challenge both, but avoid bluffing about walking away. The reasoning is that revealing full volume to Tainan destroys leverage, while linking B2 to A7 without conditions rewards weak performance. A transparent, criteria-based process preserves the relationship and gives both suppliers a path to more volume without creating a winner-take-all dynamic that increases risk.