Part Information Review and Correction

Thought for 1 min 39 sec

Review of available part information Project metadata

Table

Field	Value
Part	A-DS 09 PP/Z
Manufacturer	ASSMANN WSW components GmbH
Description	ASSMANN WSW A-DS Series, 9 Way Through Hole PCB D-sub Connector Plug, 2.77 mm Pitch
Mount	Through Hole
Part Type	Connector
MPN	A-DS 09 PP/Z
Designator Prefix	J
Datasheet	PDF

Symbol / logical pin inventory

Table

Symbol element	Present in project	Notes
1 to 9	Yes	Nine signal contacts present
MH1, MH2	Yes	Two mounting/shield shell holes present
Net definitions	None	No nets assigned yet
Pin type metadata	Present but weak	All symbol terminals are currently `Unspecified`

Datasheet URL status

A datasheet URL is already set on this part, so no @web search or property update was needed.

Datasheet scan summary General description

Table

Item	Datasheet result
Product family	D-sub PCB connector
Quality class	Standard quality class III
Mounting style	Through-hole PCB mount
Available contact counts in family	9 / 15 / 25 / 37 / 50
Contact style family coding	Male / female variants exist

Electrical characteristics

Table

Parameter	Datasheet value
Current rating	3 A
Voltage rating	250 V AC rms, 60 Hz
Contact resistance	20 mΩ max at 1 A DC
Insulation resistance	1000 MΩ at 500 VDC
Withstand voltage	1000 V AC rms, 60 Hz, 1 minute

Environmental / materials

Table

Parameter	Datasheet value
Operating temperature	-20 °C to +105 °C
Insulator material	Glass-filled thermoplastic PBT
Flammability	UL94V-0
Storage temperature	Not found in the PDF

Recommended operating / durability information

Table

Parameter	Datasheet value
Recommended operating temperature	-20 °C to +105 °C
Mating cycles	Not found
Insertion force	Not found
Withdrawal force	Not found

Pin description status

Table

Item	Result
Individual functional pin descriptions	Not provided
Contact numbering	Numeric contacts only
Mechanical holes	Two shell / mounting holes provided

For this connector, the datasheet behaves like a mechanical connector drawing rather than an IC datasheet, so there are no per-pin electrical functions beyond contact numbering.

Package / mechanical dimensions for 9-position version

Table

Dimension	Datasheet value
A	30.81 mm
B	24.99 mm
C	16.92 mm
E	11.08 mm
F	19.20 mm
Contact spacing in row	2.77 mm
Row offset / spacing shown in layout drawing	2.84 mm
Shell mounting hole	Ø3.05 clear hole
Recommended signal-hole size	Ø1.0 ±0.05
Recommended mounting-hole size	Ø3.1 +0.05 / 0

Special features called out

Table

Feature	Datasheet evidence
Through-hole D-sub connector	Yes
Family supports multiple pin counts	Yes
Standard class III connector	Yes
Flame-retardant insulator	Yes
Mechanical PCB layout drawing included	Yes

Cross-check: symbol and footprint vs datasheet What matches

Table

Area	Status	Notes
Contact count	Pass	1 to 9 match a 9-way connector
Mounting holes	Pass	MH1 and MH2 exist
Connector style	Pass	Through-hole D-sub footprint is present
Footprint family geometry	Likely pass	Pad arrangement is consistent with a 2-row DB9 pattern and includes a STEP model

Issues / risks found

Table

Area	Severity	Finding	Why it matters
Signal-hole drill size	High	Footprint uses 1.15 mm drill for pins 1-9, while the datasheet calls out Ø1.0 ±0.05 recommended PCB holes	Could produce excessive hole clearance, weaker solder fillets, poorer pin retention, and a footprint that no longer matches vendor-recommended land pattern
Mounting-hole drill size	Medium	Footprint uses 3.15 mm drill for MH1 / MH2, datasheet shows Ø3.1 +0.05 / 0	Probably manufacturable, but not an exact match to the drawing
Symbol pin electrical types	Medium	All symbol terminals are `Unspecified` instead of passive/mechanical	Weak ERC behavior and easier to miss connection mistakes in larger designs
Part metadata completeness	Medium	BOM lookup did not return a resolved placed BOM item for this part project	Could affect downstream sourcing metadata if this part is reused elsewhere without cleanup
Pin description detail	Low	No explicit pin function naming beyond numbers	Acceptable for a connector, but users must rely on numbering only

Important nuance on pad spacing

The footprint geometry appears internally consistent for a DB9-style staggered connector:

Row-to-row offset and in-row spacing match the expected 9-way D-sub pattern.
The only significant dimensional concern visible from the footprint asset is the drill sizing, not the overall pin arrangement.

Bottom line

Table

Result	Conclusion
Datasheet presence	Good
Mechanical family match	Good
Symbol completeness	Usable, but metadata should be improved
Footprint manufacturability risk	Yes: signal drill diameter should be reviewed first
Wrong-part-ordering risk	Low to medium
Board-failure risk	Medium if the oversized signal holes reduce solder quality or retention

Recommended fixes

Table

Priority	Fix
1	Change signal pin drills for 1 to 9 to match the datasheet-recommended hole specification
2	Recheck MH1 and MH2 against the exact mounting-hole tolerance in the drawing
3	Set signal contacts 1 to 9 to `Passive`, and set MH1 / MH2 to a mechanical or passive convention
4	Add a clearer part description that explicitly says 9-position male PCB D-sub if that is the intended sex of this exact variant

If you want, I can next turn this into a concise QA checklist or a part-correction task list.

Create QA checklist

Check pin types

Inspect footprint drills

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