Part Information Review
Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.
a day
1:39
Clarifying project tasks.
Analyzing the schematic.
Analyzing the PCB layout.
Analyzing the PCB layout.
Looking for "PEC11J-9015F-S0024 ordering code description output resolution detents shaft actuator switch rating operating temperature rotational life electrical angle mechanical travel" in pec11j.pdf
Looking for "PEC11J pin assignment terminal configuration A B C D E for encoder and momentary switch common no channel A channel B channel C" in pec11j.pdf
Looking for "PEC11J-9015F-S0024 recommended PCB layout footprint dimensions mounting holes terminal pads mechanical drawing" in pec11j.pdf
Reviewed against the official Bourns PEC11J datasheet already set in the project. Key mismatches found: package is set to
TO but should reflect the 12 mm SMD gull-wing encoder package, terminal pin numbers use A1/B1/C1/D1/E1 instead of datasheet A/B/C/D/E, all functional pins are Unspecified, and MP1–MP6 may be extra schematic terminals if they’re only mechanical pads. Full details are in the PEC11J-9015F-S0024 Part Review project file.Fix part mismatches
Check mechanical pads
Find correct footprint
Add debounce components
a day
Refine this doc
Ask about this doc
PEC11J-9015F-S0024 Part Review
Scope
Reviewed the current Flux part project against the Bourns PEC11J datasheet URL already set in project properties: https://bourns.com/docs/product-datasheets/pec11j.pdf
Project information found
Existing project metadata
- Project name: PEC11J-9015F-S0024
- Manufacturer Name: Bourns
- Manufacturer Part Number: PEC11J-9015F-S0024
- Package or Case Code: TO
- Designator Prefix: U
- Datasheet URL: https://bourns.com/docs/product-datasheets/pec11j.pdf
- Current description: Rotary Encoder Incremental 24 Quadrature (Incremental) User Selectable 10 mA @ 5 VDC,-10 C to +70 C
Existing schematic terminals
| Existing terminal | Pin Number property | Pin Type |
|---|---|---|
| CHANNEL_A | A1 | Unspecified |
| CHANNEL_B | B1 | Unspecified |
| CHANNEL_C | C1 | Unspecified |
| COM | D1 | Unspecified |
| NO | E1 | Unspecified |
| MP1 | MP1 | Unspecified |
| MP2 | MP2 | Unspecified |
| MP3 | MP3 | Unspecified |
| MP4 | MP4 | Unspecified |
| MP5 | MP5 | Unspecified |
| MP6 | MP6 | Unspecified |
Existing footprint items found
- Electrical/terminal pads: CHANNEL_A, CHANNEL_B, CHANNEL_C, COM, NO
- Mechanical/mounting pads: MP1, MP2, MP3, MP4, MP5, MP6, MH1, MH2
- Footprint asset exists:
PEC11J9015FS0024.kicad_mod - 3D model asset exists:
PEC11J-9015F-S0024.stp - Symbol SVG asset exists and is default thumbnail:
PEC11J-9015F-S0024 Symbol.svg
Datasheet information extracted
Key specs for exact MPN: PEC11J-9015F-S0024
- Manufacturer / series: Bourns PEC11J Series, 12 mm SMD long-life encoder
- Function: Incremental rotary encoder with momentary push switch
- Output: 2-bit quadrature code
- Contact rating: 10 mA @ 5 VDC
- Electrical travel: Continuous
- Mechanical angle: 360° continuous
- Operating temperature: -10 °C to +70 °C
- Rotational life: 100,000 cycles minimum
- Switch type: Contact Push ON Momentary SPST
- Switch power rating: 10 mA at 5 VDC, resistive load
Ordering-code decode
PEC11J-9015F-S0024 means:PEC11J= model9= surface-mount gull-wing terminal configuration0= no detents15= 15.0 mm shaft lengthF= flatted metal shaftS= SPST push switch, 350 ± 100 gf operating force0024= 24 pulses per 360° rotation
Datasheet terminal functions
| Datasheet terminal | Function |
|---|---|
| A | Encoder A signal / Channel A |
| B | Encoder B signal / Channel B |
| C | Encoder common contact |
| D | Push switch terminal |
| E | Push switch terminal |
Top-view terminal layout shown in the datasheet:
Text
D E A C B
Datasheet note: D and E are dummy terminals on the non-switch version; this exact
...S... variant has the switch.Cross-check results
Metadata mismatches / improvements
| Field | Current value | Datasheet-derived value | Status |
|---|---|---|---|
| Manufacturer Name | Bourns | Bourns | OK |
| MPN | PEC11J-9015F-S0024 | PEC11J-9015F-S0024 | OK |
| Datasheet URL | Bourns PEC11J PDF | Official Bourns PEC11J PDF | OK |
| Package or Case Code | TO | Surface Mount Gull-wing Style / 12 mm SMD encoder | Mismatch |
| Designator Prefix | U | Recommend SW or ENC; U is acceptable only if the library convention treats electromechanical encoders as modules | Review |
| Description | says “User Selectable” | Exact variant is no detents, 15 mm flatted shaft, SPST switch, 24 PPR | Needs update |
Symbol / pin mismatches
| Datasheet terminal | Current symbol terminal | Current Pin Number | Expected Pin Number | Status |
|---|---|---|---|---|
| A | CHANNEL_A | A1 | A | Pin number mismatch |
| B | CHANNEL_B | B1 | B | Pin number mismatch |
| C | CHANNEL_C | C1 | C | Pin number mismatch |
| D | COM | D1 | D | Pin number mismatch; label is switch-contact convention, not datasheet label |
| E | NO | E1 | E | Pin number mismatch; label is switch-contact convention, not datasheet label |
All five functional terminals have
Pin Type = Unspecified. For this electromechanical encoder, these should not remain unspecified. A reasonable mapping is:- A, B: Passive or Output depending Flux symbol convention; datasheet describes contact/quadrature terminals, not active driven outputs.
- C: Passive / common encoder contact.
- D, E: Passive switch contacts.
Extra schematic terminals
The schematic includes
MP1 through MP6 as Terminal components. The datasheet electrical terminal table identifies only A, B, C, D, and E; mounting/locating features are mechanical footprint items rather than normal schematic pins. These MP terminals should be reviewed: keep them only if Flux part authoring intentionally exposes mechanical pads as terminals; otherwise they are extra schematic pins relative to the datasheet electrical terminals.Footprint cross-check
The project footprint includes pads for A/B/C/D/E equivalents and multiple mechanical pads/holes (
MP1–MP6, MH1, MH2). The datasheet does show recommended PCB layout features including terminal pads and mounting/locating holes, so the presence of mechanical footprint features is expected. However, I could not verify pad coordinates/dimensions from the structured layout output because only pad node names were exposed, not full geometry in the tool response.Recommended fixes
- Update
Package or Case CodefromTOto a datasheet-derived package/terminal description such as12 mm SMD Gull-wing Encoder. - Update the description to remove “User Selectable” and reflect the exact variant:
12 mm SMD incremental rotary encoder, 24 PPR, no detents, 15 mm flatted shaft, SPST push switch, 10 mA @ 5 VDC, -10 °C to +70 °C. - Change functional terminal Pin Number properties from
A1/B1/C1/D1/E1toA/B/C/D/E. - Add concise Pin Description properties:
- A: Encoder Channel A
- B: Encoder Channel B
- C: Encoder Common
- D: Push Switch Contact
- E: Push Switch Contact
- Set Pin Type for A/B/C/D/E to
Passiveunless you prefer A/B asOutputfor ERC behavior. - Decide whether
MP1–MP6should remain schematic terminals. If they are purely mechanical mounting pads, consider removing them from the schematic symbol while keeping the mechanical pads/holes in the footprint.
Bottom line
The part has the correct MPN, manufacturer, and official datasheet URL, and it appears to include the required A/B/C encoder terminals and D/E switch terminals. Main issues are metadata (
Package or Case Code), terminal Pin Number values, unspecified pin types/descriptions, and possible extra mechanical-pad terminals in the schematic symbol.
Welcome 👋
Flux accelerates your PCB design with AI.
Create your account to start using this component and bring your ideas to life.