Part Review and Datasheet Check

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.

Thought for 5 sec

flux

I’ll inspect the part metadata, find and attach the official datasheet if missing, then compare symbol/footprint/pin details against the datasheet and report any mismatches.

Worked for 2 mins 51 sec

flux

The part already had a Datasheet URL set; I also found the official Microchip PDF URL for reference. I’m now checking the symbol and SOIC-8 footprint details against the extracted datasheet values.

Worked for 3 mins 18 sec

Created a project doc

MCP4151-103E/SN Part Review

View Document

Date: 2026-07-13 Reviewed available part information for the published Flux part project MCP4151-103E_SN, including MPN, manufacturer, packa...

flux

Completed the part review and captured the detailed cross-check in MCP4151-103E/SN Part Review.

Key result: pinout and SOIC-8 footprint are broadly correct for MCP4151-103E/SN; flagged issues are missing pin descriptions, all pin types set to Unspecified, description should say 8-bit / 257-tap rather than only “256 Step,” Part Type is too broad, and pad width is slightly wider than Microchip’s land-pattern max. The part already had a Datasheet URL set; I also found the official Microchip PDF URL for reference.

Fix metadata and review

Fix pin metadata

Update part description

Check pad compliance

Run ERC DRC

Files

Pins

Symbol

Layout

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MCP4151-103E/SN Part Review

Date: 2026-07-13

Scope

Reviewed available part information for the published Flux part project MCP4151-103E_SN, including MPN, manufacturer, package, pin count, description, project properties, schematic symbol terminals, footprint geometry, and pin descriptions/types. Cross-checked against the Microchip MCP413X/415X/423X/425X datasheet for MCP4151-103E/SN.

Existing part information

Table

Field	Current value	Datasheet / official value	Status
Manufacturer Part Number	`MCP4151-103E/SN`	`MCP4151-103E/SN`	OK
Manufacturer Name	Microchip	Microchip Technology	OK
Project name	`MCP4151-103E_SN`	Part-specific name	OK
Description	`Digital Potentiometer 256 Step 10kOhm`	10 kΩ, 8-bit / 257-tap volatile SPI digital potentiometer	Minor wording issue
Part Type	`Resistors`	Digital potentiometer / integrated circuit / variable resistor	Needs refinement
Designator Prefix	`IC`	IC-style prefix appropriate	OK
Pin count	8 pads / 8 terminals	8-lead SOIC	OK
Datasheet URL	Uploaded PDF already set	Official Microchip PDF also found: `https://www.microchip.com/bin/mchp/product-ds.MCP4151.pdf`	Existing URL present; no required update under request condition

Key datasheet specs

Device family: MCP413X/415X/423X/425X 7/8-bit SPI digital potentiometers with volatile memory.
Specific device: MCP4151, single volatile 8-bit potentiometer.
Nominal resistance: 10 kΩ (103 code), ±20% tolerance.
Resolution/taps: 8-bit, 257 taps.
POR wiper setting: mid-scale.
Interface: SPI; supports modes 0,0 and 1,1.
Max SPI clock: 10 MHz at VDD = 2.7 V to 5.5 V; 1 MHz at VDD = 1.8 V to 2.7 V.
Supply voltage: 1.8 V to 5.5 V operating; specified characteristics mainly 2.7 V to 5.5 V.
Temperature code: E, extended -40°C to +125°C.
Terminal voltage range: P0A/P0W/P0B must remain between VSS and VDD.
Max current through A/W/B terminals: 2.5 mA.
Typical wiper resistance: 75 Ω.
Package: SN = 8-lead Plastic Small Outline, narrow 150 mil SOIC.

Symbol pinout check

Datasheet 8-lead SOIC top-view pinout:

Table

Pin	Datasheet name	Datasheet function	Current Flux terminal	Status
1	CS	Active-low SPI chip select input	`~CS`	OK
2	SCK	SPI clock input	`SCK`	OK
3	SDI/SDO	SPI data input/output; SDO is open-drain during reads	`SDI/SDO`	OK
4	VSS	Ground reference	`VSS`	OK
5	P0A	Potentiometer terminal A	`P0A`	OK
6	P0W	Potentiometer wiper terminal	`P0W`	OK
7	P0B	Potentiometer terminal B	`P0B`	OK
8	VDD	Positive supply input	`VDD`	OK

Symbol orientation/order is consistent with the datasheet top-view convention: pins 1-4 on the left top-to-bottom and pins 8-5 on the right top-to-bottom.

Pin descriptions and electrical types

Current issue: every terminal has Pin Type: Unspecified, and no useful pin descriptions are populated.

Recommended pin metadata:

Table

Pin	Name	Recommended pin type	Recommended description
1	`~CS`	Input	Active-low SPI chip select input; supports high-voltage serial command mode per datasheet.
2	`SCK`	Input	SPI serial clock input.
3	`SDI/SDO`	Bi-Directional	SPI serial data input/output; SDO function is open-drain during readback.
4	`VSS`	Ground	Ground reference.
5	`P0A`	Passive	Potentiometer terminal A; voltage must stay between VSS and VDD.
6	`P0W`	Passive	Potentiometer wiper terminal; voltage must stay between VSS and VDD.
7	`P0B`	Passive	Potentiometer terminal B; voltage must stay between VSS and VDD.
8	`VDD`	Power In	Positive supply input, 1.8 V to 5.5 V operating range.

Footprint check

Current footprint asset: SOIC127P600X175-8N.kicad_mod.

Table

Footprint feature	Current value	Datasheet / Microchip land pattern	Status
Pin count	8	8	OK
Pitch	1.27 mm	1.27 mm BSC	OK
Pad row center spacing	5.40 mm	5.40 mm nominal	OK
Pad width	0.65 mm	0.60 mm max land width	Slightly wide by 0.05 mm
Pad length	1.50 mm	1.55 mm max land length	OK
Body/fab length	4.90 mm	4.90 mm BSC	OK
Body/fab width	3.90 mm	3.90 mm BSC body width	OK
Overall package width basis	6.00 mm class	6.00 mm BSC	OK
Height in footprint name	1.75 mm	1.75 mm max	OK

Conclusion: the footprint is the correct SOIC-8 1.27 mm pitch / 150 mil package class for the SN package. The only land-pattern concern is that pad width is 0.65 mm while the Microchip recommended land pattern lists X1 = 0.60 mm max. This is a small generic-footprint difference, but it should be flagged if strict manufacturer land-pattern compliance is required.

Mismatches / quality issues flagged

Pinout and terminal names match the datasheet.
Footprint package family and primary geometry match the SN 8-lead SOIC package.
All symbol pins are currently typed Unspecified; they should be assigned Input, Bi-Directional, Ground, Passive, and Power In types.
Pin descriptions are missing and should be populated from the datasheet.
Part description says 256 Step, while the datasheet describes the device as 8-bit with 257 taps. A clearer description is: 10 kΩ, 8-bit / 257-tap volatile SPI digital potentiometer.
Part Type is currently Resistors; this should ideally be refined to Digital Potentiometer / Integrated Circuit / Variable Resistor depending on available taxonomy.
Footprint pad width is 0.65 mm versus Microchip land-pattern X1 = 0.60 mm max; pad length, pitch, row spacing, and body geometry otherwise match.
The project already had a Datasheet URL set to an uploaded copy. The official Microchip URL found during review is https://www.microchip.com/bin/mchp/product-ds.MCP4151.pdf.

Recommended follow-up edits

Update terminal pin types and pin descriptions.
Consider updating the description to 10 kΩ, 8-bit / 257-tap volatile SPI digital potentiometer.
Consider refining Part Type to a more specific digital-potentiometer or IC classification.
If strict Microchip land-pattern compliance is required, reduce pad width from 0.65 mm to 0.60 mm; otherwise the existing SOIC-8 footprint is likely acceptable.

Scope
Existing part information
Key datasheet specs
Symbol pinout check
Pin descriptions and electrical types
Footprint check
Mismatches / quality issues flagged
Recommended follow-up edits