Part Information Review and Validation

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.

flux

2:42

Thought for a moment

Thought for 5 sec

Read schematic.

Read layout.

Read "What is the part number, manufacturer, package type, pin count, general function, and description of this component?" in DSA-456894.pdf.

Read "Extract the complete pin table: pin number, pin name, pin function, and pin type for every pin of the TDA1085C DIP16." in DSA-456894.pdf.

Read "Find absolute maximum ratings, recommended operating conditions, supply voltage range, operating temperature range, and key electrical characteristics for TDA1085C." in DSA-456894.pdf.

Read "Find package dimensions or package outline information for the TDA1085C DIP16 package, including pin count and package name." in DSA-456894.pdf.

Read DSA-456894.pdf.

Review complete: the part mostly matches the datasheet, including MPN/manufacturer and DIP-16 footprint, but pin 8 is mislabeled as NC and should be -VCC, and all terminals currently have Pin Type = Unspecified. The datasheet URL was already set, so I did not update it. Full results are in the TDA1085C Part Information Review project file.

Fix pin metadata

Run ERC/DRC

Verify footprint pins

Document correction

Created project doc "TDA1085C Part Information Review"

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TDA1085C Part Information Review

Scope

Reviewed the current Flux part project metadata, terminal/schematic symbol pins, footprint assets/layout pads, and datasheet-derived part information for TDA1085C. This follows the part-project verification flow: use the datasheet as source of truth, match pin count exactly, and audit terminal elements against the datasheet pin table.

Datasheet URL status

Existing project Datasheet URL: https://datasheet.datasheetarchive.com/originals/distributors/Datasheets-23/DSA-456894.pdf
Because a Datasheet URL is already set, I did not perform a web search or update the project property.
Note: the PDF content is an ON Semiconductor datasheet, but the URL host is DatasheetArchive rather than an onsemi.com canonical URL.

Current project information

Project name: TDA1085C
Project description: OBSOLETE AC motor controller,TDA1085C DIP16 25pcs
Manufacturer Part Number: TDA1085C
Manufacturer Name: ON Semiconductor
Designator Prefix: IC
Datasheet URL: set as above
Symbol asset: TDA1085C Symbol.svg
Footprint asset: DIP762W53P254L1918H444Q16N.kicad_mod
3D model asset: TDA1085C.stp

Datasheet-derived summary

Part: TDA1085C
Manufacturer: ON Semiconductor
Description: Universal Motor Speed Controller
Function: phase-angle triac controller for universal motor speed control, intended for washing machine applications, with tachogenerator feedback and closed-loop speed regulation.
Major features from datasheet:
- On-chip frequency-to-voltage converter
- On-chip ramp generator
- Soft-start
- Load current limitation
- Tachogenerator circuit sensing
- Direct supply from AC line
- Monitor/security functions
Package options listed:
- TDA1085C: Plastic DIP, Plastic Package Case 648, 16 pins
- TDA1085CD: SO-16, D suffix, Case 751B, 16 pins
Relevant DIP mechanical info from datasheet:
- Plastic Package Case 648-08
- 16 pins
- 2.54 mm pitch (G = 0.100 BSC / 2.54 BSC)
- Package length: 18.80–19.55 mm
- Body width: 6.35–6.85 mm
- Lead row spacing dimension L: 7.50–7.74 mm

Key electrical specifications

Power supply when externally regulated, Pin 9 VCC: 15 V max
Internally regulated voltage VCC: 15.0 V min, 15.3 V typ, 15.6 V max
Current consumption at V9 = 15 V: 4.5 mA typ, 6.0 mA max
Operating junction temperature: -10°C to +120°C
Storage temperature range: -55°C to +150°C
Maximum power dissipation: 1.0 W
Thermal resistance junction-to-air: 65°C/W
Reference speed input voltage range, Pin 5: 0.08–13.5 V
Actual speed input voltage range, Pin 4: 0–13.5 V
Trigger pulse duration with C14 = 47 nF and R15 = 270 kΩ: 55 µs typ
Output pulse current at Pin 13 with VPin13 = VCC - 4.0 V: 180 mA min, 192 mA typ

Pin/terminal cross-check

The project contains 16 terminal elements, matching the datasheet’s 16-pin DIP/SO package requirement. Pin numbers and labels match the datasheet table.

Table

Pin	Datasheet name	Project terminal	Match	Recommended Flux pin type	Current Flux pin type
1	Current Synchronization	CURRENT_SYNCHRONIZATION	Yes	Input	Unspecified
2	Voltage Synchronization	VOLTAGE_SYNCHRONIZATION	Yes	Input	Unspecified
3	Motor Current Limit	MOTOR_CURRENT_LIMIT	Yes	Input	Unspecified
4	Actual Speed	ACTUAL_SPEED	Yes	Output	Unspecified
5	Set Speed	SET_SPEED	Yes	Input	Unspecified
6	Ramp Current Gen. Control	RAMP_CURRENT_GEN._CONTROL	Yes	Input	Unspecified
7	Ramp Gen. Timing	RAMP_GEN._TIMING	Yes	Output	Unspecified
8	-VCC	NC	Mismatch	Ground / Supply return	Unspecified
9	+ VCC	+_VCC	Yes	Power In	Unspecified
10	Shunt Regulator / Ballast Resistor	SHUNT_REGULATOR_BALLAST_RESISTOR	Yes	Output	Unspecified
11	F/VC Pump Capacitor	F/VC_PUMP_CAPACITOR	Yes	Output	Unspecified
12	Digital Speed Sense	DIGITAL_SPEED_SENSE	Yes	Input	Unspecified
13	Trigger Pulse Output	TRIGGER_PULSE_OUTPUT	Yes	Output	Unspecified
14	Sawtooth Capacitor	SAWTOOTH_CAPACITOR	Yes	Output	Unspecified
15	Sawtooth Set Current	SAWTOOTH_SET_CURRENT	Yes	Input	Unspecified
16	Closed Loop Stability	CLOSED_LOOP_STABILITY	Yes	Output	Unspecified

Symbol review

Pass

Symbol has 16 terminals.
Pin numbers 1–16 are present.
Most terminal names match the datasheet’s pin names after normalizing spaces/slashes/underscores.

Mismatches / issues

Pin 8 is wrong
- Datasheet: -VCC
- Project terminal: NC
- This is a functional mismatch. Pin 8 is the datasheet reference/ground/supply return pin, not no-connect.
All Pin Type properties are Unspecified
- The datasheet provides enough functional information to assign pin types.
- This degrades ERC usefulness and should be corrected.
Pin Description properties are missing
- The terminals use descriptive designators, but the dedicated Pin Description property is not populated.
Optional organization properties are missing
- For an IC-style part, Section, Pin Group, and Pin Orientation can improve symbol organization. For this 16-pin IC, sub-symbol splitting is not necessary.

Footprint review

Pass

Footprint asset name: DIP762W53P254L1918H444Q16N.kicad_mod
The footprint naming suggests:
- DIP package
- 7.62 mm row spacing
- 2.54 mm pitch
- Approx. 19.18 mm body length
- 16 pins
Datasheet Plastic Package Case 648 lists:
- 16 pins
- 2.54 mm pitch
- length 18.80–19.55 mm
- lead row spacing 7.50–7.74 mm
Layout contains 16 pad nodes corresponding to the 16 terminals.

Mismatches / issues

No footprint mismatch found from available metadata and layout pad count.
The footprint appears consistent with the DIP-16 package, but I did not inspect the raw KiCad footprint geometry in this review beyond the available asset name and layout node list.

Project metadata review

Matches datasheet

MPN: TDA1085C matches.
Manufacturer: ON Semiconductor matches.
Pin count/package: 16-pin Plastic DIP matches current footprint asset.

Recommended metadata improvements

Package or Case Code: add Plastic DIP-16, Case 648
Part Type: add/update to Motor Controller or AC Motor Speed Controller
Operating Voltage: set to 15 V if using the maximum recommended/regulated VCC value convention
Operating Temperature: set to -10°C to +120°C
Description: consider updating to a clearer library-style description, e.g. Universal motor speed controller / phase-angle triac controller, DIP-16, 15 V regulated supply, -10°C to +120°C TJ

Recommended fixes

Rename terminal NC to -VCC and set Pin Number 8 unchanged.
Set pin types:
- Pins 1, 2, 3, 5, 6, 12, 15: Input
- Pins 4, 7, 10, 11, 13, 14, 16: Output
- Pin 8: Ground or supply return
- Pin 9: Power In
Add short Pin Description values for each terminal.
Add project metadata: Package or Case Code, Part Type, Operating Voltage, and Operating Temperature.
Optionally update the project description to a more searchable functional summary.

Overall result

The part is mostly correct: the MPN, manufacturer, 16-pin count, DIP-16 footprint, and nearly all symbol terminal labels align with the datasheet. The main correctness issue is Pin 8 mislabeled as NC instead of -VCC. The main quality issue is that all terminal Pin Type properties are still Unspecified.

Scope

Datasheet URL status

Current project information

Datasheet-derived summary

Key electrical specifications

Pin/terminal cross-check

Symbol review

Pass

Mismatches / issues

Footprint review

Pass

Mismatches / issues

Project metadata review

Matches datasheet

Recommended metadata improvements

Recommended fixes

Overall result

Reviews

Documents

TDA1085C Part Information Review

Assets

TDA1085C

TDA1085C Symbol.svgDefault

kicad_mod

TDA1085C

DIP762W53P254L1918H444Q16N.kicad_modFootprint

TDA1085C-thumb.png

TDA1085C-thumbThumbnail

stp

TDA1085C

TDA1085C.stp3D Model

Project Name

TDA1085C

Description

Motor Driver Parallel 16-PDIP

The TDA1085C is a universal motor speed controller IC designed for phase-angle control of AC universal motors. It is commonly used in washing machines, power tools, and other appliances requiring closed-loop motor speed regulation using a TRIAC drive stage.

Key Features Closed-loop motor speed control TRIAC phase-angle control output Integrated frequency-to-voltage converter Built-in soft-start function Dual acceleration ramp generator Load current limiting protection Tachogenerator feedback sensing Direct AC line supply capability Motor stall and tachometer failure protection Wide operating temperature range Available in DIP-16 package Typical Applications Washing machine motor control AC universal motor drives Industrial motor speed regulators Power tools Sewing machines Small appliance motor controllers Package Information Package Type: PDIP-16 / SOIC-16 Operating Voltage: Typically up to 15 V regulated supply Manufacturer: Originally Motorola / ON Semiconductor

#CommonPartsLibrary #IntegratedCircuit #motor-driver

Properties

Manufac… Number

TDA1085C

Manufac…er Name

ON Semiconductor

Part Type

Integrated Circuit

Datasheet URL

datasheet.datasheetarchive.com/originals/distributors/Datasheets-23/DSA-456894.pdf

Designator Prefix

License

creativecommons.org/licenses/by/4.0/

Symbol Style

parametric-v1

Pricing & Availability

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adrian95 / TDA1085C

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