Part Review and Datasheet Update

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 6 sec

flux

I’ll review the part metadata, find and set the official datasheet if needed, then compare symbol pins, footprint/pads, and pin descriptions against the datasheet before summarizing mismatches.

Worked for 3 mins 43 sec

flux

I found an existing Mean Well datasheet property, but the stored productPdf URL returned 404 when scraped; the datasheet index resolves to the official direct PDF at meanwell.com/Upload/PDF/IRM-45/IRM-45-SPEC.PDF. I’m using that official PDF for the cross-check.

Worked for 1 min 5 sec

flux

Completed the part review and saved the detailed findings in IRM-45-12 Part Review.

Open items:

The existing datasheet URL was present but appears fragile/404 via scrape; the official direct PDF is https://www.meanwell.com/Upload/PDF/IRM-45/IRM-45-SPEC.PDF.
Main mismatch risk: footprint pad positions/sizes appear scaled incorrectly in computed layout rules, and drill diameters weren’t visible for verification.

Suggested next steps:

Update the Datasheet URL to the direct Mean Well PDF.
Fix/verify footprint pad scaling and through-hole drill sizes.
Add explicit pin descriptions for +V, -V, AC/L, and AC/N.

Fix and verify part

Fix identified mismatches

Update datasheet URL

Add pin descriptions

Run design checks

Files

Pins

Symbol

Layout

Preview

IRM-45-12 Part Review

Part metadata found in Flux

Project / part: IRM-45-12
Published as part: yes
Part UID: e88173b7-9edd-4538-b650-746617138ab5
Manufacturer Name: Mean Well
Manufacturer Part Number: IRM-45-12
Description: Mean Well 45.6W Encapsulated Switch Mode Power Supply, 0–3.8A, 12V dc
Part Type: Electromechanical Components
Designator Prefix: PS
Datasheet URL property currently set: https://www.meanwell.com/productPdf.aspx?i=685#1
Official PDF resolved/used for review: https://www.meanwell.com/Upload/PDF/IRM-45/IRM-45-SPEC.PDF

Note: the existing productPdf.aspx?i=685#1 datasheet URL was already present, so the “set URL if missing” condition did not apply. However, scraping that URL returned HTTP 404 for /productPdf.asp; the datasheet query resolved the official direct Mean Well PDF above.

Datasheet source

Manufacturer: Mean Well
Datasheet: IRM-45 series, file name IRM-45-SPEC, dated 2025-11-21
Source: official Mean Well PDF at https://www.meanwell.com/Upload/PDF/IRM-45/IRM-45-SPEC.PDF

Key datasheet specs for IRM-45-12

Table

Spec	Datasheet value
Output voltage	12 V DC
Rated output current	3.8 A
Output current range	0–3.8 A
Rated output power	45.6 W
Ripple/noise	150 mVp-p max
Output voltage tolerance	±2.5%
Line regulation	±0.5%
Load regulation	±1.0%
Input voltage range	85–305 VAC
Input frequency	47–440 Hz
Typical efficiency	87.5%
Typical AC current	1.5 A at 115 VAC; 0.9 A at 230 VAC; 0.75 A at 277 VAC
Typical inrush current	Cold start 30 A at 115 VAC; 60 A at 230 VAC
Leakage current	<0.25 mA at 277 VAC
Overload protection	115–160% rated power, hiccup, auto-recovery
Over-voltage protection	12.6–16.2 V, shutoff/clamped by zener diode
Operating temperature	-30 to +85 °C, derating applies
Withstand voltage	I/P–O/P: 4.2 kVAC
Isolation resistance	I/P–O/P: 100 MΩ at 500 VDC, 25 °C, 70% RH
MTBF	6451.1k h min Telcordia SR-332; 1212.1k h min MIL-HDBK-217F at 25 °C

Mechanical / footprint data from datasheet

PCB mounting style, case IRM60:

Table

Item	Datasheet value
Body size	87 × 52 × 29.5 mm
Body tolerance	±1 mm
Lead length	3.5 ± 1 mm
Pin labels shown	AC/L, AC/N, -V, +V
AC pin diameter	1 mm dia.
Output pin diameter	2 mm dia.
Horizontal pin-column spacing	76 mm
Output-side vertical spacing, -V to +V	5.5 mm
AC-side vertical spacing, AC/L to AC/N	6.75 mm
Output-side vertical location shown	40.75 mm from upper reference line

Schematic symbol cross-check

The current symbol is implemented as four terminal components:

Table

Flux designator	Flux pin number	Datasheet label	Result
+V	1	+V	OK
-V	2	-V	OK
AC/L	3	AC/L	OK
AC/N	4	AC/N	OK

Observations:

The datasheet does not provide numeric pin numbers; it labels pins by function in the bottom-view drawing.
Flux-assigned pin numbers 1–4 are therefore local symbol numbering, not manufacturer pin numbers.
Pin descriptions are currently mostly implicit via designator names; the terminal components show Pin Type: Unspecified and no explicit Pin Description property.

Footprint cross-check

What matches

Footprint silk/body outline appears to represent an 87 mm × 52 mm body, matching the datasheet nominal body size.
Four pads exist with labels matching the datasheet terminal labels: +V, -V, AC/L, AC/N.
Relative pin positions appear intended to match the datasheet: output pins separated by 5.5 mm, AC pins separated by 6.75 mm, AC side offset by 76 mm horizontally from output side.

Mismatches / risks

Pad size and coordinates appear scaled incorrectly in computed rules.
The layout tree reports pad positions and sizes as very small mm values:
- +V: position {x: 0, y: 0}, size {x: 0.0033, y: 0.0033}
- -V: position {x: 0, y: -0.0055}, size {x: 0.0033, y: 0.0033}
- AC/N: position {x: 0.076, y: -0.0345}, size {x: 0.0018, y: 0.0018}
- AC/L: position {x: 0.076, y: -0.04125}, size {x: 0.0018, y: 0.0018}
These values look like meter-to-millimeter scaling leakage: 0.076 mm likely represents intended 76 mm, 0.0055 mm likely intended 5.5 mm, and pad sizes 0.0033/0.0018 mm likely intended 3.3/1.8 mm. If the tool’s computed rules are authoritative, the pads are effectively microscopic and the footprint is not manufacturable.
AC/output pad holes are not explicitly visible in the inspected rules.
The datasheet specifies 1 mm diameter AC pins and 2 mm diameter output pins. The footprint needs plated through-holes sized appropriately for those leads, typically with clearance over the lead diameter. The inspected pad rules only exposed overall pad sizes, not drill/hole diameters.
Pin descriptions/types could be improved.
Current terminal properties have Pin Type: Unspecified; explicit descriptions such as 12 V DC output positive, 12 V DC output negative, AC line input, and AC neutral input would reduce integration mistakes.
Datasheet property URL may be fragile.
The current URL is a Mean Well productPdf endpoint that returned 404 in web scrape. The official direct PDF URL resolved by the datasheet system is more robust: https://www.meanwell.com/Upload/PDF/IRM-45/IRM-45-SPEC.PDF.

Recommended fixes

Update the part-level Datasheet URL to the direct official PDF URL if possible:
https://www.meanwell.com/Upload/PDF/IRM-45/IRM-45-SPEC.PDF
Correct footprint pad coordinate scale if the computed rule values are truly in mm:
- +V at (0, 0) reference
- -V at (0, -5.5 mm) relative to +V, depending on footprint origin convention
- AC side at x = 76 mm
- AC/L and AC/N separated by 6.75 mm
Verify/add correct through-hole drill diameters:
- AC pins: 1 mm lead diameter; choose drill with suitable clearance
- Output pins: 2 mm lead diameter; choose drill with suitable clearance
Add explicit pin descriptions/types for all four terminals.

Part metadata found in Flux
Datasheet source
Key datasheet specs for IRM-45-12
Mechanical / footprint data from datasheet
Schematic symbol cross-check
Footprint cross-check
What matches
Mismatches / risks
Recommended fixes