DVT, PVT, MP: The Three Gates — Minimum Checklists and Common Pitfalls

TL;DR (3-Line Summary)

DVT validates design, PVT validates production, MP validates scale — each stage has “minimum must-complete checklists” and “common pitfalls.” Skipping DVT and going directly to mass production = yield less than 50% + rework cost explosion; not doing enough PVT before MP = delivery collapse. This article gives you minimum checklists for each gate (DVT 12 items/PVT 10 items/MP 8 items) + 15 common pitfalls + pass/fail criteria. Suitable for AI hardware go-global teams, project managers, supply chain leads.

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You Think “Made prototypes = can mass produce” — Actually “DVT→PVT→MP each gate can fail”

Common Failure Scenarios

Failure 1: Skip DVT, directly open tooling

• Team: Prototype validated, let’s directly open tooling (save time)
• Result: After tooling, found heat dissipation insufficient, tooling报废$30K

Failure 2: Only 1 round of DVT before PVT

• Team: DVT did 10 units, yield 80%, can proceed to PVT
• Result: PVT did 100 units, yield dropped to 50%, problems only exposed

Failure 3: Not enough PVT before taking big order

• Customer rushes: “Can you ship 1000 units directly?”
• Team: PVT only did 50 units, but customer is urgent, accepted
• Result: 1000 units yield , rework cost $80K

Core truth: Each stage has “must-complete validations” — skipping = double rework later.

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The Three Gates Explained

Gate 1: DVT (Design Verification Testing)

Purpose: Validate design works as intended

What it tests:

• Functionality
• Performance
• Reliability
• Safety

When: After EVT (Engineering Verification Testing)

Minimum checklist (12 items):

• All functional requirements verified
• Performance specs met (speed, accuracy, etc.)
• Environmental testing passed (temp, humidity)
• EMC/EMI compliance verified
• Safety testing passed
• Software/firmware validated
• UI/UX reviewed
• Documentation complete
• Test reports generated
• Issues from EVT resolved
• Design freeze approved
• Go/no-go decision documented

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Gate 2: PVT (Production Verification Testing)

Purpose: Validate production process works at scale

What it tests:

• Production yield
• Quality consistency
• Process stability
• Supplier readiness

When: After DVT, before MP

Minimum checklist (10 items):

• Pilot run 50-100 units
• Yield rate
• First pass yield
• All quality specs met
• Production SOP documented
• Line workers trained
• Suppliers qualified
• Backup suppliers identified
• Production issues resolved
• PVT report approved

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Gate 3: MP (Mass Production)

Purpose: Validate full-scale production capability

What it tests:

• Volume capacity
• Supply chain stability
• Quality at scale
• Delivery capability

When: After PVT passes

Minimum checklist (8 items):

• Production capacity confirmed
• Quality consistent with PVT
• Supply chain buffers established
• Packaging and logistics ready
• RMA process documented
• Customer support trained
• Spare parts inventory set
• MP release approved

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15 Common Pitfalls

DVT Pitfalls

Pitfall	Consequence	Solution
1. Skipping EVT	Design not mature	Complete EVT first
2. Too few units	Can’t find all issues	Test 10-20 minimum
3. Skipping environmental	Field failures	Test temp/humidity
4. No design freeze	Endless changes	Lock design before DVT
5. Ignoring EMI/EMC	Certification failures	Test early

PVT Pitfalls

Pitfall	Consequence	Solution
6. Too small sample	Can’t find production issues	Run 50-100 minimum
7. Not testing real materials	Supplier issues later	Use production materials
8. Skipping pilot run	Process not ready	Do pilot run first
9. No backup suppliers	Single point failure	Qualify alternatives
10. Ignoring yield targets	Cost issues	Hit yield

MP Pitfalls

Pitfall	Consequence	Solution
11. Rushing to MP	Quality issues	Complete PVT first
12. No volume test	Capacity issues	Test 10x pilot volume
13. Weak supply chain	Stockouts	Buffer inventory
14. No RMA process	Customer complaints	Set up RMA upfront
15. Skipping support training	Support collapse	Train support team

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Pass/Fail Criteria

DVT Pass Criteria

• All functional tests passed
• Performance specs met
• No critical issues
• Design approved for PVT

PVT Pass Criteria

• Yield
• Quality consistent
• Production ready
• Approved for MP

MP Pass Criteria

• Volume capability confirmed
• Quality maintained
• Delivery track record
• Can accept orders

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Timeline Guide

Stage	Typical Duration	Sample Size
EVT	4-8 weeks	3-5 units
DVT	6-12 weeks	10-20 units
PVT	8-16 weeks	50-100 units
MP	Ongoing	Full volume

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Key Takeaways

1. Don’t skip stages — each gate validates different things
2. Test enough units — too few = miss issues
3. Document everything — helps when issues arise
4. Get sign-off — don’t proceed without approval
5. Plan for delays — each stage takes longer than expected

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Next Steps

1. Audit: Where are you in the DVT→PVT→MP process?
2. Checklist: Use the checklists above
3. Identify gaps: What’s missing?
4. Fix before proceeding: Don’t rush to the next stage

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Sharp Lee AI Hardware/AIoT Go-to-Market Operator

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Disclaimer: This content is for reference only.

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