Part Datasheet Review
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.
Worked for 2 mins 33 sec
Review complete: the datasheet URL was already set, the symbol has the correct 24 leads plus exposed pad, and the footprint appears consistent with the 24-lead 4×4 mm QFN package. I flagged metadata issues: package is incorrectly set to “TO,” part type is incorrectly “Electromechanical Components,” all terminal pin types/descriptions are missing, and the EP pin number should be checked against the datasheet’s “Pad” label. Full analysis is in the Part Datasheet Review — PE426462A-X project file.
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Part Datasheet Review — PE426462A-X
Scope
Reviewed current Flux part project metadata, schematic terminal elements, footprint assets/layout pads, and the official PE426462 datasheet URL already set on the project.
Datasheet URL status
- Current project
Datasheet URL:https://www.psemi.com/pdf/datasheets/pe426462ds.pdf - Status: already set, so no web search or property update was needed.
Datasheet-derived part information
- Manufacturer / datasheet source: Peregrine Semiconductor Corporation / pSemi
- Primary MPN / order code: PE426462A-X
- Function: UltraCMOS / HaRP-enhanced absorptive SP6T RF switch
- Frequency range: 10 MHz to 8 GHz
- RF impedance: 50 Ω system
- Package: Green 24-lead 4 × 4 × 0.85 mm QFN
- Pins: 24 package leads plus exposed pad
- Moisture sensitivity: MSL1
- Supply voltage: VDD recommended 2.3 V to 5.5 V, 3.3 V typical
- Digital control inputs: V1, V2, V3, LS; logic-high min 1.17 V, max 3.6 V; logic-low max 0.6 V
- Operating temperature: -55 °C to +125 °C
- RF power handling headline: 31 dBm CW; see datasheet power de-rating curve for frequency/temperature limits
- ESD: HBM 1000 V, CDM 1000 V
- Insertion loss headline: 1.1 dB typical at 6 GHz
- Isolation headline: 35 dB typical at 6 GHz
- Important implementation notes: RF pins must be at 0 VDC; RF DC-blocking capacitors are not required if that condition is met. LS pin RF grounding can improve insertion loss/isolation. Pin 20 NC may be grounded or left open.
Project metadata check
Table
| Field | Current project value | Datasheet / recommended value | Status |
|---|---|---|---|
| Manufacturer Part Number | PE426462A-X | PE426462A-X | OK |
| Manufacturer Name | Peregrine Semiconductor | Peregrine Semiconductor Corporation / pSemi | Minor naming difference |
| Datasheet URL | https://www.psemi.com/pdf/datasheets/pe426462ds.pdf | Official pSemi PDF | OK |
| Package or Case Code | TO | 24-lead 4 × 4 × 0.85 mm QFN | Mismatch |
| Part Type | Electromechanical Components | RF Switch IC / Integrated Circuit | Mismatch |
| Designator Prefix | IC | IC or U | Acceptable, though U is common for ICs |
| Description | “RF Switch ICs SP6T, -55 to +125 C, Absorptive, 50? RF Switch, w/o ext. Vss” | Absorptive 50 Ω SP6T RF switch, 10 MHz–8 GHz, -55 °C to +125 °C | Needs cleanup: encoding issue in “50?” and missing frequency range |
Datasheet pin table vs schematic terminals
The schematic contains 25 terminal elements: 24 numbered package pins plus
EP. This matches the datasheet’s 24-lead QFN with exposed pad.Table
| Datasheet pin | Datasheet name | Datasheet function | Existing terminal | Existing pin type | Status |
|---|---|---|---|---|---|
| 1 | LS | Logic select input | LS | Unspecified | Pin present; type/description missing |
| 2 | RF2 | RF port 2 | RF2 | Unspecified | Pin present; type/description missing |
| 3 | GND | Ground | GND_1 | Unspecified | Pin present; type/description missing |
| 4 | RF3 | RF port 3 | RF3 | Unspecified | Pin present; type/description missing |
| 5 | GND | Ground | GND_2 | Unspecified | Pin present; type/description missing |
| 6 | GND | Ground | GND_3 | Unspecified | Pin present; type/description missing |
| 7 | GND | Ground | GND_4 | Unspecified | Pin present; type/description missing |
| 8 | VDD | Supply voltage | VDD | Unspecified | Pin present; type/description missing |
| 9 | V1 | Digital control input 1 | V1 | Unspecified | Pin present; type/description missing |
| 10 | V2 | Digital control input 2 | V2 | Unspecified | Pin present; type/description missing |
| 11 | V3 | Digital control input 3 | V3 | Unspecified | Pin present; type/description missing |
| 12 | GND | Ground | GND_5 | Unspecified | Pin present; type/description missing |
| 13 | GND | Ground | GND_6 | Unspecified | Pin present; type/description missing |
| 14 | GND | Ground | GND_7 | Unspecified | Pin present; type/description missing |
| 15 | RF4 | RF port 4 | RF4 | Unspecified | Pin present; type/description missing |
| 16 | GND | Ground | GND_8 | Unspecified | Pin present; type/description missing |
| 17 | RF5 | RF port 5 | RF5 | Unspecified | Pin present; type/description missing |
| 18 | GND | Ground | GND_9 | Unspecified | Pin present; type/description missing |
| 19 | RF6 | RF port 6 | RF6 | Unspecified | Pin present; type/description missing |
| 20 | NC | No connect; may be GND or open externally | NC | Unspecified | Pin present; should be Not Connected |
| 21 | GND | Ground | GND_10 | Unspecified | Pin present; type/description missing |
| 22 | RFC | RF common port | RFC | Unspecified | Pin present; type/description missing |
| 23 | GND | Ground | GND_11 | Unspecified | Pin present; type/description missing |
| 24 | RF1 | RF port 1 | RF1 | Unspecified | Pin present; type/description missing |
| Pad | GND | Exposed pad ground | EP, Pin Number = 25 | Unspecified | Present, but pin number differs from datasheet label “Pad”; acceptable only if footprint tool requires pad 25 |
Recommended terminal property fixes
- Set all ground pins and exposed pad to
Pin Type = Ground. - Set
VDDtoPin Type = Power In. - Set
LS,V1,V2,V3toPin Type = Input. - Set RF1–RF6 and RFC to
Pin Type = PassiveorBi-Directionaldepending on preferred RF-port ERC behavior; for an RF switch part,Passiveis usually less likely to create misleading digital ERC assumptions. - Set
NCtoPin Type = Not Connected. - Add short
Pin Descriptionvalues, e.g. “RF Common Port”, “Digital Control Input”, “Logic Select Input”, “Supply Voltage”, “Ground”, “Exposed Pad Ground”. - Add sections/groups: Power, Ground, RF, Control, No Connect.
- Because this part has >20 terminals, consider assigning sub-symbol suffixes such as
RF,Control, andPower_Groundif the symbol should be split.
Footprint / layout check
Available project assets
- Symbol:
PE426462A-X Symbol.svg - Footprint:
QFN50P400X400X90-25N.kicad_mod - 3D model:
PE426462A-X.stp
Footprint consistency
The footprint name decodes as a 0.50 mm pitch, 4.00 × 4.00 mm, ~0.90 mm height, 25-node QFN footprint. That is broadly consistent with the datasheet package: 24-lead 4 × 4 × 0.85 mm QFN with exposed pad.
The layout currently shows pads for all schematic terminals plus an
EP pad, giving 25 pad nodes total. This matches the expected 24 perimeter leads plus exposed pad.Footprint items to verify visually/mechanically
- Confirm exposed pad dimensions are close to datasheet land pattern: package EP 2.70 × 2.70 mm; recommended land pattern center pad 2.75 × 2.75 mm.
- Confirm perimeter pad pitch is 0.50 mm.
- Confirm perimeter land pattern pads are approximately 0.30 × 0.60 mm per the datasheet recommended land pattern.
- Confirm pin-1 orientation matches the symbol/terminal numbering.
Mismatches / issues flagged
- Project
Package or Case Codeis wrong: currentTO; should be24-lead 4 × 4 × 0.85 mm QFNor equivalent QFN-24 package code. - Project
Part Typeis wrong: currentElectromechanical Components; should be RF switch IC / Integrated Circuit. - All schematic terminal
Pin Typeproperties areUnspecified: should be populated from datasheet. - Terminal pin descriptions are missing: should be added for library quality and ERC clarity.
- EP pin numbering is ambiguous: schematic uses
Pin Number = 25, while datasheet labels itPad. Keep25only if the footprint pad numbering expects25; otherwise use the datasheet labelPad. - Description has a text encoding issue: “50?” should be “50 Ω” and the description should include 10 MHz–8 GHz.
- Manufacturer name is slightly shortened: current value is acceptable, but datasheet uses Peregrine Semiconductor Corporation / pSemi branding.
Suggested corrected project description
Absorptive 50 Ω SP6T RF switch IC, 10 MHz–8 GHz, 2.3–5.5 V VDD, -55 °C to +125 °C, 24-lead 4 × 4 mm QFNSuggested corrected project properties
Part Type:RF Switch ICPackage or Case Code:24-lead 4 × 4 × 0.85 mm QFNOperating Voltage:5.5 Vif using max recommended VDD as the property valueOperating Temperature:-55 °C to +125 °CImplementation Details:RF pins must be at 0 VDC; no RF DC-blocking capacitors are required if that condition is met. Pin 20 NC may be grounded or left open. Good RF grounding on LS can improve insertion loss/isolation.
Bottom line
The symbol/footprint appear structurally complete for the PE426462A-X: all 24 leads plus exposed pad are present, and the footprint asset is consistent with the 4 × 4 mm 0.50 mm pitch QFN package. The main issues are metadata quality and terminal property completeness, not missing pins.
Scope
Datasheet URL status
Datasheet-derived part information
Project metadata check
Datasheet pin table vs schematic terminals
Recommended terminal property fixes
Footprint / layout check
Available project assets
Footprint consistency
Footprint items to verify visually/mechanically
Mismatches / issues flagged
Suggested corrected project description
Suggested corrected project properties
Bottom line
