LIGO AIR PCN-2025-001
| PCN No. | |
|---|---|
| Issue Date | YYYY-MM-DD |
| Effective Date / First Ship | YYYY-MM-DD |
| Change Type | |
| Status | RELEASED |
| Impact | MINOR |
Description of Change
Detailed description of what is changing. Include before/after comparison if applicable.
Example: The MCU is being upgraded from STM32L431 to STM32L433 to improve power efficiency and extend battery life by approximately 15%. All pinouts, electrical specifications, and firmware APIs remain compatible.
| Item | Before | After |
|---|---|---|
| Component / Parameter | [old value] | [new value] |
| Marking / Identifier | [old] | [new] |
Reason for Change
Explain the technical, business, or regulatory reason for the change:
- Reason 1 — e.g., obsolescence of original component (last-time-buy notified by supplier)
- Reason 2 — e.g., performance improvement (extend battery life by 15%)
- Reason 3 — e.g., regulatory compliance (REACH SVHC update)
- Reason 4 — e.g., cost optimization or supply chain diversification
Affected Products
| Product Name | Part Number | Affected Variants | Date Code Cutoff |
|---|---|---|---|
| [Product A] | [SKU-001] | All variants | From [YYWW] |
| [Product B] | [SKU-002] | Industrial variant only | From [YYWW] |
Impact Assessment
| Category | Affected? | Notes |
|---|---|---|
| Form (mechanical) | No / Yes | Dimensions unchanged / [describe change] |
| Fit (interface) | No / Yes | Pinout/connector unchanged / [describe] |
| Function | No / Yes | Functional behavior identical / [describe] |
| Reliability | No / Yes | No reliability impact / [describe] |
| Quality | No / Yes | Same quality standards / [describe] |
| Compliance | No / Yes | No certification re-test needed / [describe] |
Overall Impact: MINOR
Qualification / Validation
The following tests were performed on the new revision to validate equivalence to the previous version:
| Test | Standard | Sample Size | Result |
|---|---|---|---|
| Temperature cycling | IEC 60068-2-14 | [n] units | PASS |
| Vibration | IEC 60068-2-6 | [n] units | PASS |
| HALT / HASS | internal procedure | [n] units | PASS |
| Functional test | internal test plan | [n] units | PASS |
Qualification Report: Download PDF
Sample Availability
| Item | Detail |
|---|---|
| Sample available? | Yes / No |
| Sample part number | [SKU-001-NEW] |
| Sample lead time | [X] weeks from request |
| Sample quantity (free) | [N] units per customer |
| Request channel | sales@sojielectronics.com |
Effective Date / Date Code
| Item | Value |
|---|---|
| First ship date (new revision) | YYYY-MM-DD |
| Last ship date (old revision) | YYYY-MM-DD |
| Date code marking (new) | YYWW or full date format |
| Date code marking (old) | YYWW or full date format |
| Visual distinguishing mark | e.g., "Rev B" silkscreen on PCB |
Customer Action Required
Action Level: [None / Acknowledgment / Requalification]
Detailed action items:
- Action 1 — e.g., No action required, change is fully backward compatible
- Action 2 — e.g., Update internal documentation referring to old part number
- Action 3 — e.g., Requalify in customer application within [X] weeks
Response Deadline: YYYY-MM-DD (please confirm receipt by email)
Contact
| Role | Name | Phone | |
|---|---|---|---|
| PCN Owner | [Name] | pcn@sojielectronics.com | +84 ... |
| Quality Manager | [Name] | quality@sojielectronics.com | +84 ... |
| Technical Support | Support Team | support@sojielectronics.com | +84 ... |