Part Metadata Audit and Verification
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 16 sec
I’ll audit the relay part metadata, find/update the official datasheet if needed, then compare the symbol pins and PCB footprint against the datasheet and record the detailed findings in a project file.
Worked for 2 mins 52 sec
I found the Panasonic datasheet already set on the part, so no Datasheet URL update is needed. I’m extracting the official pinout/specs now and checking them against the symbol and footprint.
Worked for 17 mins 38 sec
Audit complete. The Panasonic datasheet URL was already present, so I did not change it; I added missing pin descriptions and set all relay terminals to Passive. No hard symbol/footprint mismatches were found; the only caution is to visually confirm polarized coil polarity against the original PDF artwork before production release due to garbled OCR.
Full details are in Part Audit: Panasonic TQ2SA-L2-3V-Z.
Verify coil polarity
Run ERC/DRC
Check pad numbering
Document caution
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Part Audit: Panasonic TQ2SA-L2-3V-Z
Date: 2026-05-21
Scope
Reviewed available part information, official Panasonic sources, schematic symbol terminals, PCB footprint, and pin descriptions for the Flux part project
TQ2SA-L2-3V-Z.Existing Part Metadata
Table
| Field | Current / Found Value | Notes |
|---|---|---|
| Manufacturer | Panasonic | Project data reports Panasonic. Official product pages identify Panasonic Industry / Automation Controls. |
| Manufacturer Part Number | TQ2SA-L2-3V-Z | Official Panasonic product number. |
| Ordering / part number | ATQ221SAZ | Panasonic ordering part number for TQ2SA-L2-3V-Z. |
| Part type | Relay | Signal / telecom relay. |
| Designator prefix | K | Suitable for relay. |
| Contact arrangement | 2 Form C | DPDT changeover contacts. |
| Terminal / package | Surface-mount terminal, SA type | Tape-and-reel Z suffix. |
| Pin / pad count | 10 | Symbol and footprint both expose 10 terminals/pads. |
| Datasheet URL | https://industry.panasonic.com/ac/cdn/e/control/relay/signal/catalog/mech_eng_tq.pdf | Already present; no update required. |
| 3D model | TQ2SA-L2-3V-Z.stp | Present. |
| Footprint asset | TQ2SAL23VZ.kicad_mod | Present. |
Official Sources Checked
- Panasonic global product page: https://industry.panasonic.com/global/en/products/control/relay/signal/number/atq221saz
- Panasonic North America product page: https://na.industrial.panasonic.com/products/relays-contactors/mechanical-signal-relays/series/119572/model/120045
- Panasonic TQ relay datasheet: https://industry.panasonic.com/ac/cdn/e/control/relay/signal/catalog/mech_eng_tq.pdf
Key Datasheet / Product Specs
Table
| Parameter | Value |
|---|---|
| Operating function | 2 coil latching type |
| Coil voltage | 3 V DC |
| Rated operating power | 140 mW |
| Coil current | 46.7 mA set coil, 46.7 mA reset coil at 20 C |
| Coil resistance | 64.3 ohms set coil, 64.3 ohms reset coil at 20 C |
| Set voltage | Max. 75% of rated coil voltage, initial |
| Reset voltage | Max. 75% of rated coil voltage, initial |
| Max allowable coil voltage | 150% of rated coil voltage at 20 C |
| Recommended drive | Square pulse drive; do not energize set and reset coils simultaneously |
| Contact material | AgNi + Au clad |
| Contact rating, resistive | 2 A 30 V DC; 0.5 A 125 V AC |
| Max switching power | 60 W DC; 62.5 VA AC |
| Max switching voltage | 220 V DC; 125 V AC |
| Max switching current | 2 A DC; 2 A AC |
| Min switching load | 10 uA 10 mV DC, reference value |
| Initial contact resistance | Max. 75 mOhm, by voltage drop 6 V DC 1 A |
| Operate / set time | Max. 4 ms at rated coil voltage, 20 C, without bounce |
| Release / reset time | Max. 4 ms at rated coil voltage, 20 C, without bounce |
| Initial dielectric strength | 1,000 Vrms open contacts; 1,500 Vrms contact-coil; 1,500 Vrms between contact sets |
| Operating / storage conditions | -40 C to +85 C, 5% to 85% RH, avoid icing/condensation; derate to max 1 A above 70 C per catalog note |
| Mechanical life | Min. 100 x 10^6 operations |
| Electrical life | Min. 100 x 10^3 operations at 2 A 30 V DC resistive; min. 200 x 10^3 at 1 A 30 V DC resistive; min. 100 x 10^3 at 0.5 A 125 V AC resistive |
| Body dimensions | 14.0 mm x 9.0 mm nominal footprint family; Panasonic product page height 5.6 mm |
| Weight | Approx. 2 g |
Note: A generic datasheet query can surface a standard-contact 200 mW coil table. The exact product page and exact TQ2SA-L2-3V-Z / ATQ221SAZ row identify this part as the 140 mW SA type; use the 140 mW, 46.7 mA, 64.3 ohm values for this MPN.
Symbol Pin Cross-Check
Existing terminal mapping after review:
Table
| Pin | Symbol terminal | Function |
|---|---|---|
| 1 | COIL1+ | Set coil positive terminal |
| 2 | NC1 | Normally closed contact, pole 1 |
| 3 | COM1 | Common contact, pole 1 |
| 4 | NO1 | Normally open contact, pole 1 |
| 5 | COIL1- | Set coil negative terminal |
| 6 | COIL2- | Reset coil negative terminal |
| 7 | NO2 | Normally open contact, pole 2 |
| 8 | COM2 | Common contact, pole 2 |
| 9 | NC2 | Normally closed contact, pole 2 |
| 10 | COIL2+ | Reset coil positive terminal |
The symbol exposes all 10 relay terminals and the contact groups match the Panasonic 2 Form C topology. The Panasonic datasheet schematic is printed as top/bottom views and the OCR output is partially garbled; the current symbol naming follows the visible pin numbering/contact grouping and common TQ2SA-L2 pin convention. Coil polarity should still be visually checked against the PDF schematic before releasing the library part because polarized latching relay coil polarity is safety-critical.
Footprint Cross-Check
Existing footprint pads:
Table
| Pad | Position (mm) | Size (mm) | Type |
|---|---|---|---|
| 1 | -5.08, +4.78 | 1.00 x 2.94 | SMD rectangle |
| 2 | -2.54, +4.78 | 1.00 x 2.94 | SMD rectangle |
| 3 | 0.00, +4.78 | 1.00 x 2.94 | SMD rectangle |
| 4 | +2.54, +4.78 | 1.00 x 2.94 | SMD rectangle |
| 5 | +5.08, +4.78 | 1.00 x 2.94 | SMD rectangle |
| 6 | +5.08, -4.78 | 1.00 x 2.94 | SMD rectangle |
| 7 | +2.54, -4.78 | 1.00 x 2.94 | SMD rectangle |
| 8 | 0.00, -4.78 | 1.00 x 2.94 | SMD rectangle |
| 9 | -2.54, -4.78 | 1.00 x 2.94 | SMD rectangle |
| 10 | -5.08, -4.78 | 1.00 x 2.94 | SMD rectangle |
The footprint matches the Panasonic SA recommended PC board pattern dimensions captured from the datasheet: 2.54 mm pad pitch along each row, 9.56 mm row spacing, and 1.00 mm x 2.94 mm recommended SMD pads. Body/fab outline is 14 mm x 9 mm, matching the datasheet family dimensions. Courtyard is larger than the relay body and acceptable.
Mismatches / Issues Found
Table
| Severity | Item | Status |
|---|---|---|
| Low | Terminal pin descriptions were missing / generic before audit. | Fixed: added Pin Description for all 10 terminals. |
| Low | Terminal Pin Type values were Unspecified. | Fixed: set all terminal Pin Type values to Passive. |
| Low | Package field was not found as a project-level property in semantic project search. | Not changed; footprint asset and product description clearly identify SA surface-mount terminal package. |
| Low | Pin count was not found as a project-level property in semantic project search. | Not changed; project context reports Pads: 10 and symbol/footprint both have 10 pins/pads. |
| Caution | OCR extraction of Panasonic schematic polarity is imperfect. | No symbol/footprint mismatch found, but manual visual confirmation of coil polarity in the PDF is recommended before production release. |
Updates Made
- Confirmed the official Panasonic datasheet URL is already present; no Datasheet URL update required.
- Added pin descriptions for all 10 schematic terminals.
- Changed all terminal Pin Type values from
UnspecifiedtoPassive.
Overall Result
No hard symbol or footprint mismatches were found. The footprint dimensions match the SA type recommended PCB pattern, the symbol exposes the correct 10 relay terminals, and the project already references the official Panasonic datasheet. The only issues found were incomplete pin metadata, which have been corrected, plus a caution to visually verify polarized coil polarity against the original PDF artwork before release.
Scope
Existing Part Metadata
Official Sources Checked
Key Datasheet / Product Specs
Symbol Pin Cross-Check
Footprint Cross-Check
Mismatches / Issues Found
Updates Made
Overall Result
