Part Information Review and Mismatch Check
-VIN_ to -VIN, add package/pin-count metadata where supported, then re-read the part to verify.-VIN_ renamed to -VIN in schematic and footprint pad labelPower In, output pins = Power OutModule, with SIP-4 through-hole details captured in role/project metadata-VIN, pin 2 +VIN, pin 3 -VOUT, pin 4 +VOUT.Table
| Field | Current value / status |
|---|---|
| Manufacturer Part Number | RO-1209S |
| Manufacturer | RECOM Power |
| Datasheet URL | https://www.recom-power.com/pdf/Econoline/RO.pdf |
| Designator Prefix | PS |
| Part Type | Integrated Circuits |
| Package | Not found as a project-level property; footprint asset is RO1209S.kicad_mod |
| Description | Not found as a project-level property; project description says Recom 1W isolated DC-DC converter, Vin 10.8-13.2Vdc, Vout 9Vdc, isolation 1000Vdc |
| Pin Count | Not found as a property; symbol/footprint expose 4 pins/pads |
Table
| Spec | Datasheet value |
|---|---|
| Series / function | RECOM RO series unregulated isolated DC/DC converter |
| Power | 1W |
| Package style | SIP4, single output |
| Nominal input for RO-1209S | 12VDC |
| Input voltage range | +/-10%, therefore 10.8V to 13.2V for 12V nominal model |
| Output voltage | 9VDC |
| Output current | 111mA |
| Typical efficiency | 78-80% for RO-xx09S family |
| Max capacitive load | 1000uF for 9V output family |
| Minimum load | 0% |
| Output ripple/noise | 100mVp-p max, 20MHz bandwidth |
| Output accuracy | -2.0% typ / +/-5.0% max |
| Switching frequency | 50kHz min, 100kHz typ, 105kHz max |
| Isolation voltage, standard suffixless part | 1kVDC for 1s; 500VAC/60Hz rated for 1 min |
| Isolation resistance | 10Gohm min |
| Isolation capacitance | 20pF min / 75pF max |
| Short-circuit protection, suffixless part | 1 second only; /P suffix required for continuous SCP |
| Operating temperature | -40C to +85C full load |
| Max case temperature | +110C |
| Dimensions | 11.5 x 6.0 x 10.0mm |
| Weight | 1.4g typ |
| Materials | UL94V-0 case, potting, and PCB |
| Compliance/certifications shown | RoHS2+, REACH, UL60950-1, CAN/CSA-C22.2 No 60950-1, EN60950-1, IEC60950-1, EN55032, CB report E358085 |
Table
| Pin # | Datasheet function |
|---|---|
| 1 | -Vin |
| 2 | +Vin |
| 3 | -Vout |
| 4 | +Vout |
Table
| Project pin/designator | Project pin number | Project pin type | Datasheet expected | Result |
|---|---|---|---|---|
| -VIN_ | 1 | Unspecified | -Vin | Function matches, naming has trailing underscore |
| +VIN | 2 | Unspecified | +Vin | Match |
| -VOUT | 3 | Unspecified | -Vout | Match |
| +VOUT | 4 | Unspecified | +Vout | Match |
Unspecified; for a stronger symbol these should be set to power input/output style classifications if the part editor supports terminal-level pin type updates.RO1209S.kicad_mod.Table
| Pad | Position from footprint center | Expected from datasheet |
|---|---|---|
| Pin 1 / -VIN_ | x=-3.81mm, y=-1.45mm | 2.54mm pitch sequence, pins 1-4 |
| Pin 2 / +VIN | x=-1.27mm, y=-1.45mm | 2.54mm pitch sequence, pins 1-4 |
| Pin 3 / -VOUT | x=+1.27mm, y=-1.45mm | 2.54mm pitch sequence, pins 1-4 |
| Pin 4 / +VOUT | x=+3.81mm, y=-1.45mm | 2.54mm pitch sequence, pins 1-4 |
-VIN_ symbol/pad name has a trailing underscore; function and pin number match the datasheet, but the naming is not exact.Unspecified for all four terminals./P suffix has continuous SCP. The base part has 1-second SCP.-VIN naming, populated pin descriptions, explicit pin types, project-level package/description/pin count properties if supported, and confirmation of the footprint drill size from the raw KiCad footprint file.Welcome 👋
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