# Engineering Change Notice

> Use this template to control semiconductor or electronics product, process, test, material, or documentation changes.

## Template Metadata

| Field | Details |
|-------|---------|
| Category | Semiconductor & Electronics |
| Owner | [Team or owner] |
| Version | [Version number] |
| Effective Date | [Date] |
| Review Cycle | [Monthly / Quarterly / Annual / Event-based] |
| Status | [Draft / In Review / Approved] |

## Change Summary

Identify ECN number, change type, initiator, product, process, and effective revision.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

## Reason for Change

Explain yield, reliability, obsolescence, compliance, customer, or cost driver.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

## Affected Items

List drawings, BOMs, mask layers, recipes, test programs, labels, work instructions, and inventory.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

## Risk Assessment

Assess fit, form, function, reliability, regulatory, customer notification, and supply impact.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

## Validation Plan

Define qualification lots, sample size, test coverage, acceptance criteria, and data review.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

## Implementation

State cut-in lots, inventory disposition, system updates, training, and rollback trigger.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

## Approvals

Capture engineering, quality, operations, product, and customer approval requirements. Use change-control language with specific revision and lot traceability.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]