Part Review and Verification

3:29

Analyzing the schematic.

Analyzing the PCB layout.

Reviewing the bill of materials.

Looking for "part overview description, contact arrangement, coil rated voltage, terminal layout, package dimensions, and ordering information for G2RL-1-E-DC12" in en-g2rl.pdf

Looking for "absolute maximum ratings and limiting values" in en-g2rl.pdf

Looking for "recommended operating conditions, coil characteristics, operate time, release time, insulation resistance, dielectric strength, shock resistance, vibration resistance, ambient temperature" in en-g2rl.pdf

Looking for "pin descriptions, terminal arrangement, schematic, coil terminals, common terminal, normally open terminal, normally closed terminal" in en-g2rl.pdf

Looking for "package information, dimensions, PCB footprint, drilling, terminal pitch, mounting dimensions" in en-g2rl.pdf

Cross.

Analyzing the PCB layout.

Looking for "For G2RL-1-E(-ASI, -HA, -PW1), map each pin number 1 2 3 4 5 6 7 8 to coil, common, normally open, or normally closed according to the bottom view internal connection diagram" in en-g2rl.pdf

Looking for "For G2RL-1-E-DC12, exact contact rating, coil resistance, coil current, power consumption, contact resistance, insulation resistance, dielectric strength, impulse withstand voltage, operate time, release time, ambient temperature, humidity" in en-g2rl.pdf

Looking for "For G2RL-1-E package, exact body dimensions and exact PCB drilling hole count and diameter" in en-g2rl.pdf

Looking for "In the bottom-view terminal arrangement for G2RL-1-E(-ASI, -HA, -PW1), list exactly which numbered terminals are electrically common with each other in the de-energized state and which two terminals are the coil" in en-g2rl.pdf

Looking for "In the terminal arrangement drawing for G2RL-1-E(-ASI, -HA, -PW1), identify whether terminals 6 7 and 8 are active contacts, duplicate mechanical pins, or no-connects" in en-g2rl.pdf

Running design review.

Part review result

1) Available part information

Field	Result
MPN	G2RL-1-E DC12
Manufacturer	Omron Electronics Inc-EMC Div
Part type	Relay
Project description	General Purpose Relay SPDT (1 Form C) 12 VDC Coil Through Hole
Designator prefix	K
Datasheet URL in part properties	Present
Symbol implementation	Eight single-pin terminals: COIL_1, COIL_2, COM_1, COM_2, N.O._1, N.O._2, N.C._1, N.C._2
Pin count in symbol	8
Pin types in symbol	All currently Unspecified
Footprint presence	Present; missing-footprint review passed

2) Datasheet URL status

A datasheet URL is already set on the part, so no web lookup or property update was needed.

3) Datasheet metadata summary

Category	Datasheet findings
Description	Low-profile power relay, SPDT (1 Form C), flux-protection type, 12 VDC coil
Body dimensions	29 max. × 12.7 max. × 15.7 max. mm; average 28.8 × 12.5 × 15.5 mm
PCB mounting / drill	8 holes, each 1.3 mm diameter for G2RL-1-E family
Contact rating	16 A at 250 VAC and 16 A at 24 VDC
Coil resistance	360 Ω
Coil current	33.3 mA
Coil power	Approx. 400 mW
Must operate voltage	70% max. of rated voltage
Must release voltage	10% min. of rated voltage
Max. coil voltage	130% of rated voltage at 85°C
Contact resistance	100 mΩ max.
Insulation resistance	1,000 MΩ min.
Dielectric strength	Coil-to-contacts: 5,000 VAC, 50/60 Hz, 1 min; same polarity contacts: 1,000 VAC, 50/60 Hz, 1 min; different polarity contacts: 2,500 VAC, 50/60 Hz, 1 min
Impulse withstand voltage	10 kV (1.2 × 50 µs)
Operate time	15 ms max.
Release time	5 ms max.
Ambient operating temperature	-40°C to 85°C
Ambient humidity	5% to 85% RH
Special features	Low profile, 8 mm minimum clearance/creepage distance, no coil polarity

4) Pin / terminal information extracted from the datasheet

The datasheet clearly states:

Contact form is SPDT (1c)
Coil has no polarity
The package variant uses an 8-hole pattern

What is not cleanly recoverable from text extraction alone is a fully trustworthy per-pin functional map for all 1...8 pin numbers. The terminal diagram is present in the PDF, but the extracted text for exact pin-role mapping was inconsistent across passes. Because of that, I cannot certify the current numbered terminal mapping from text extraction alone.

5) Cross-check: symbol and footprint vs datasheet

Check	Result	Risk
MPN matches part description	Pass	Low
Coil voltage matches description	Pass: 12 VDC	Low
Contact form matches description	Pass: SPDT / 1 Form C	Low
Symbol pin count vs datasheet hole count	Pass: symbol has 8 terminals, datasheet says 8 holes	Low
Footprint existence	Pass	Low
Exact footprint drill / pitch geometry vs datasheet	Not fully verifiable from available layout data	Medium
Exact symbol pin-number-to-function mapping vs datasheet	Not verified	High
Symbol electrical pin typing	All pins are Unspecified	Medium
Symbol style	Implemented as separate terminals, not a conventional relay symbol	Medium

Flagged issues High-risk issue

The current symbol’s functional terminal naming and numbering cannot be confirmed against the datasheet’s terminal arrangement with enough confidence from the extracted PDF text.
If even one of COIL_1, COIL_2, COM_1, COM_2, N.O._1, N.O._2, N.C._1, or N.C._2 is assigned to the wrong pin number, that can cause:
- wrong PCB wiring
- incorrect relay behavior
- possible board failure in use

Medium-risk issues

All symbol pins are typed as Unspecified rather than coil/contact-related electrical types.
The footprint appears present and the pad count matches, but I could not retrieve enough layout geometry to prove the exact hole positions and pitch match the datasheet.
Using eight independent terminal symbols instead of a relay symbol makes review harder and increases the chance of pin-mapping mistakes.

Bottom line

The metadata is mostly consistent with the datasheet.
The biggest unresolved manufacturing/function risk is the exact pin-number mapping between the schematic symbol and the datasheet terminal diagram.
The footprint likely has the correct 8-pin through-hole pattern, but exact geometry could not be fully confirmed from the available layout data.

If you want, I can next help you turn this into a precise correction checklist for the part so the symbol and footprint can be verified pin-by-pin against the datasheet figure.

@file exact pin map

@review part checks

Footprint dimensions

25 days

Ready.

Reviews

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