Use the tool first to screen 10mm vibration motor fit across coin ERM, cylindrical ERM, and LRA options. Then use the report layer for evidence, boundary interpretation, tradeoffs, and compliance gating before RFQ.
Stage1b focused on evidence quality, boundary clarity, and decision actionability gaps identified in the existing page.
| Gap | Impact | Stage1b fix | Status |
|---|---|---|---|
| Key conclusions were presented without direct source URLs and reproducible fact points. | High risk of unverifiable handoff claims during procurement and compliance review. | Added clickable primary-source ledger and stage1b evidence delta table with dated facts. | Closed in stage1b-research-enhance (2026-04-28) |
| Cross-vendor substitution boundary lacked concrete 10mm counterexamples. | High risk of approving replacement motors by diameter label only. | Added 2.0V-class vs 3.0V-class 10mm PN comparison with current and vibration boundary notes. | Closed in stage1b-research-enhance (2026-04-28) |
| Compliance section had broad labels but no method-level pass/fail triggers. | High risk of late-stage compliance blockers after technical fit appears complete. | Added regulatory trigger table with effective dates, UL method thresholds, and minimum action paths. | Closed in stage1b-research-enhance (2026-04-28) |
| Evidence-insufficient areas were not explicit enough for lifecycle and ingress durability claims. | Medium risk of overconfidence in claims that still require project-level validation. | Kept explicit Unknown rows and added `no reliable public dataset` statements for unresolved topics. | Closed in stage1b-research-enhance (2026-04-28) |
| Stage status text implied stage1c completion while this round is still stage1b. | Medium risk of process confusion before page-review self-heal execution. | Stage status now reflects the active workflow round and final stage1c completion state. | Closed in stage1c-page-review-self-heal (2026-04-28) |
Fill the minimum set of constraints. The tool returns a fit status, current envelope, boundary notes, and next step.
LRA path note: voltage is interpreted as Vrms-equivalent for screening and uses a 2.05Vrms max boundary.
Actuator family
Environment
Optimization priority
Boundary policy: this tool returns only screening-grade output. Out-of-range requests are rejected with explicit recovery guidance.
The result always includes interpretation, failure boundaries, and a next-step action path.
Core decision statements and critical numbers for fast stakeholder alignment.
Method assumptions, source ledger, date context, and unknown-value disclosure.
| Method item | Formula / rule | Interpretation |
|---|---|---|
| Screening envelope check | if input out of boundary -> fail or conditional | Avoids false confidence by forcing explicit out-of-range handling before recommendation. |
| Current estimate | I_run ~= I_base * V_factor * G_factor * duty_factor | Power-path pre-screen only; not a replacement for supplier electrical plots. |
| Startup estimate | I_start ~= I_run * startup_factor | Captures first-order surge risk that often trips compact battery rails. |
| Heat loss estimate | P_loss ~= V * I_run * duty - mech_allowance | Flags high-duty scenarios that require thermal and enclosure validation. |
| Confidence score | base confidence +/- boundary and priority adjustments | Communicates reliability level and prevents binary overtrust in borderline cases. |
| Topic | Source | Checked on | Status | Decision relevance |
|---|---|---|---|---|
| 10mm ERM datasheet boundaries | Precision Microdrives 310-103.004 datasheet | 2026-04-28 | Known | Provides operating voltage 2.5V-3.8V, rated current and startup boundaries for baseline screening. |
| 10mm ERM counterexample (2.0V class) | Jinlong C1030Q002F datasheet (DigiKey host) | 2026-04-28 | Known | Provides a 10mm 2.0V-class PN reference used to show why diameter-only substitution fails. |
| 10mm LRA resonance context | Precision Microdrives C10-100 LRA datasheet | 2026-04-28 | Known | Defines rated resonance region, max operating voltage, and rise/stop time behavior for LRA boundaries. |
| ERM / pager terminology boundary | Precision Microdrives ERM technical overview | 2026-04-28 | Known | Documents that ERM vibration motors are also known as pager motors, useful for intent boundary clarity. |
| Haptic driver boundary | TI DRV2605L datasheet | 2026-04-28 | Known | Defines 2V-5.2V supply and ERM/LRA haptic-driver feature envelope. |
| Generic motor-driver boundary | TI DRV8837 datasheet | 2026-04-28 | Known | Defines VM 0V-11V and peak current envelope for direct bridge-driven motor control path. |
| Consumer product safety requirement timeline | CPSC business guidance for Reese’s Law | 2026-04-28 | Known | Provides effective-date context for product and packaging obligations in the U.S. market. |
| Battery transport gate (UN38.3 test summary) | 49 CFR 173.185 (eCFR) | 2026-04-28 | Known | Defines test summary and retention requirements for lithium-cell shipments. |
| UL 4200A method thresholds cited by rulemaking | Federal Register 88 FR 65274 final rule discussion | 2026-04-28 | Known | Provides method-level threshold values (e.g., 50N, 20N, 0.34 N·m, 0.4 N·m) for gate design. |
| Cross-vendor fixture-normalized force benchmark | Public open dataset unavailable | 2026-04-28 | Unknown | No single open, fixture-normalized benchmark across 10mm families; A/B testing remains required. |
| Ingress durability benchmark by adhesive stack | Public open dataset unavailable | 2026-04-28 | Unknown | Water ingress durability is process-dependent; use project-specific test plans. |
| Focus | New fact | Decision impact | Source | Checked on |
|---|---|---|---|---|
| 10mm substitution boundary | C1030Q002F is rated 2.0V with 1.7V-2.3V operating range; 310-103.004 is rated 3.0V with operating up to 3.6V. | Do not approve supplier swap by diameter-only check. Re-run rail and startup validation for each PN. | C1030Q002F + 310-103.004 datasheets | 2026-04-28 |
| LRA applicability boundary | C10-100 LRA lists 2.0Vrms rated drive at 175Hz with 2.05Vrms max operating limit. | LRA should stay conditional unless resonance-aware drive and enclosure response are verified. | C10-100 datasheet | 2026-04-28 |
| Driver architecture split | DRV2605L runs in 2V-5.2V and targets ERM/LRA haptics; DRV8837 supports VM 0V-11V bridge drive. | Haptic effect path and generic motor-drive path are not interchangeable in firmware and validation scope. | DRV2605L + DRV8837 datasheets | 2026-04-28 |
| Consumer safety timeline | CPSC guidance states 16 CFR 1263 product requirements effective 2024-03-19 and package requirements effective 2024-09-21. | U.S. product launch plans need dated evidence owners before RFQ freeze. | CPSC guidance page | 2026-04-28 |
| Battery shipment documents | 49 CFR 173.185 requires UN38.3 test-summary availability and states records must be kept while cell/battery is offered and for one year after. | Shipping readiness must be tracked as a release gate, not a post-design task. | 49 CFR 173.185 | 2026-04-28 |
Checked on 2026-04-28. Used for 3.0V-class baseline (current, startup current, start time).
Checked on 2026-04-28. Used for operating-voltage and startup boundaries; includes MTTF context.
Checked on 2026-04-28. Counterexample: 10mm can be 2.0V-class with different current/vibration envelope.
Checked on 2026-04-28. Used for resonance and voltage limits (2.0Vrms rated, 2.05Vrms max).
Checked on 2026-04-28. Haptic driver envelope and auto-resonance context.
Checked on 2026-04-28. Generic H-bridge voltage/current envelope for non-effect-driven path.
Checked on 2026-04-28. Effective-date and compliance execution timeline context.
Checked on 2026-04-28. UN38.3 test-summary and retention obligations for shipment.
Checked on 2026-04-28. Method-threshold values cited by CPSC final rule discussion.
Structured tradeoff and risk matrix for architecture and procurement choices.
| Part | Voltage class | Current boundary | Mechanical signal | Decision implication | Source |
|---|---|---|---|---|---|
| Jinlong C1030Q002F (10mm coin ERM) | Rated 2.0V; operating 1.7V-2.3V | Rated current 70mA max; start current 150mA max | Rated speed 12,000rpm ±3,000rpm; vibration 0.5G average (100g jig) | A 3.0V rail can overdrive this class if no dedicated control and margin checks are applied. | DigiKey-hosted Jinlong datasheet |
| Precision Microdrives 310-103.004 (10mm coin ERM) | Rated 3.0V; max operating 3.6V | Max rated current 90mA; max startup current 150mA | Typical speed ~14,000rpm; start time ~70ms | Even with same diameter, electrical and dynamic envelopes differ enough to require PN-level checks. | PMD product page + 310-103 datasheet |
| Precision Microdrives C10-100 (10mm LRA) | Rated 2.0Vrms; max operating 2.05Vrms | Rated current 83mArms; max 95mArms | Rated vibration frequency 175Hz; rise/stop 50ms/20ms | LRA cannot be treated as direct ERM drop-in without resonance-aware waveform and fixture validation. | C10-100 datasheet |
| Gate | Trigger | Requirement | Minimum action | Source |
|---|---|---|---|---|
| 16 CFR 1263 (button/coin battery products) | Product contains or ships with button/coin batteries in U.S. consumer scope | CPSC guidance references product-rule effective date 2024-03-19 and package-rule effective date 2024-09-21. | Assign owner for warning/marking evidence and keep dated records linked to SKU + packaging rev. | CPSC Reese’s Law guidance |
| UL 4200A method thresholds (as cited in FR) | Design verification for inaccessible battery enclosure performance | Federal Register rule discussion cites method thresholds such as 50N tension, 20N compression, 0.34/0.4 N·m torque, and portable drop sequences. | Map each threshold to DVT test case IDs and include pass/fail evidence before release. | Federal Register 88 FR 65274 |
| 49 CFR 173.185 UN38.3 test summary | Lithium cell/battery shipping or transport by air/ground | UN38.3 test summary must be made available and retained for offer duration plus one year. | Collect vendor test summaries at RFQ stage and verify document traceability in logistics handoff. | 49 CFR 173.185 |
| Option | Rail window | Force profile | Control complexity | Noise profile | Sourcing risk | Best-fit scenario |
|---|---|---|---|---|---|---|
| 10mm Coin ERM | 2.5V-3.6V class common | Balanced, moderate force | Low to medium | Medium | Low-medium | General vibration alerts and cost-sensitive haptics |
| 10mm Cylindrical ERM | 2.5V-4.0V class common | Higher force potential | Low to medium | Medium-high | Medium | Stronger vibration where package height is acceptable |
| 10mm LRA | 1.8Vrms-2.05Vrms resonance zone | Sharp and cleaner feel near resonance | High | Low | Medium-high | Premium haptic feel and lower acoustic footprint |
| Risk | Impact | Probability | Mitigation |
|---|---|---|---|
| Using diameter as sole substitution rule | High | High | Re-run rail/startup/duty checks per PN (for example 2.0V-class vs 3.0V-class 10mm ERM) before approving substitution. |
| Direct battery drive without surge margin | High | Medium-high | Validate startup surge with worst-case battery ESR and low-temperature profile. |
| LRA chosen without resonance-aware driver | Medium-high | Medium | Adopt compatible haptic driver and verify resonance tolerance in enclosure. |
| Ignoring high-duty thermal load | High | Medium | Run duty stress test with enclosure thermal rise and adhesive retention checks. |
| Compliance checks deferred to launch stage | High | Medium | Open dated checklist before RFQ release: 16 CFR 1263 timeline + UL method evidence + UN38.3 test-summary owner. |
Each scenario includes premise, process, and outcome to reduce ambiguous interpretation.
| Scenario | Premise | Process | Outcome |
|---|---|---|---|
| Wearable alert module, 3.0V rail, 40% duty | Need compact feel, moderate force, low integration overhead. | Start with coin ERM baseline, verify startup surge on battery rail, then tune duty profile. | Coin ERM often passes fastest when rail margin and adhesive tests are validated. |
| Handheld tool alert, higher force target >1.8G | Need stronger vibration than coin ERM baseline. | Evaluate cylindrical ERM with enclosure vibration transfer and acoustic checks. | Cylindrical ERM can meet force target but may increase noise and package cost. |
| Premium haptic interface, low audible noise target | User experience quality is prioritized over minimal BOM. | Evaluate LRA with resonance-aware driver and frequency tolerance validation. | LRA can improve haptic crispness if driver and resonance constraints are controlled. |
| Cost-down substitution by supplier B | Proposed replacement claims same 10mm diameter and voltage label. | Re-check startup current, duty thermal load, and waveform response under same fixture. | Substitution is approved only when boundary checks and reliability metrics remain inside limits. |
| High-humidity packaging with adhesive mount | Long-cycle reliability under humidity exposure is required. | Run ingress and adhesive retention tests with real process materials. | Route remains conditional until durability data closes open risks. |
Grouped by decision intent to keep execution and trust-building aligned.
Stage1b enhanced: 2026-04-28. Stage1c status: 2026-04-28. Source refresh: 2026-04-28.
Use this standard block to align page decisions with factory-side execution before RFQ launch.
Evidence refresh date: 2026-04-28. Time-sensitive compliance items should be rechecked before procurement release. Review cadence: every 6 months or sooner when primary sources change.